From 4d0ad81349c3bd833ffafee5dddb7b2da4ac8ff8 Mon Sep 17 00:00:00 2001 From: Natanael Copa Date: Fri, 8 Mar 2013 08:50:13 +0000 Subject: main/linux-grsec: update to al5 corresponds to LTS kernel 3.4.35 We also add an ipsec related MTU fix --- ...date-all-ipv4-routes-on-IPsec-pmtu-events.patch | 84 + main/linux-grsec/APKBUILD | 23 +- .../grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch | 91005 ------------------- .../grsecurity-2.9.1-3.6.11-al5-unofficial-0.patch | 90996 ++++++++++++++++++ main/linux-grsec/patch-3.6.11-al4.patch | 16533 ---- main/linux-grsec/patch-3.6.11-al5.patch | 17797 ++++ 6 files changed, 108891 insertions(+), 107547 deletions(-) create mode 100644 main/linux-grsec/5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch delete mode 100644 main/linux-grsec/grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch create mode 100644 main/linux-grsec/grsecurity-2.9.1-3.6.11-al5-unofficial-0.patch delete mode 100644 main/linux-grsec/patch-3.6.11-al4.patch create mode 100644 main/linux-grsec/patch-3.6.11-al5.patch (limited to 'main/linux-grsec') diff --git a/main/linux-grsec/5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch b/main/linux-grsec/5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch new file mode 100644 index 0000000000..4d75cf36ad --- /dev/null +++ b/main/linux-grsec/5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch @@ -0,0 +1,84 @@ +From patchwork Tue Jan 22 09:06:36 2013 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [5/5] xfrm4: Invalidate all ipv4 routes on IPsec pmtu events +Date: Mon, 21 Jan 2013 23:06:36 -0000 +From: Steffen Klassert +X-Patchwork-Id: 214475 +Message-Id: <1358845596-2066-6-git-send-email-steffen.klassert@secunet.com> +To: David Miller +Cc: Herbert Xu , + Steffen Klassert , netdev@vger.kernel.org + +On IPsec pmtu events we can't access the transport headers of +the original packet, so we can't find the socket that sent +the packet. The only chance to notify the socket about the +pmtu change is to force a relookup for all routes. This +patch implenents this for the IPsec protocols. + +Signed-off-by: Steffen Klassert + +--- +net/ipv4/ah4.c | 7 +++++-- + net/ipv4/esp4.c | 7 +++++-- + net/ipv4/ipcomp.c | 7 +++++-- + 3 files changed, 15 insertions(+), 6 deletions(-) + +diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c +index a154d0a..a69b4e4 100644 +--- a/net/ipv4/ah4.c ++++ b/net/ipv4/ah4.c +@@ -420,9 +420,12 @@ static void ah4_err(struct sk_buff *skb, u32 info) + if (!x) + return; + +- if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) ++ if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) { ++ atomic_inc(&flow_cache_genid); ++ rt_genid_bump(net); ++ + ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0); +- else ++ } else + ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0); + xfrm_state_put(x); + } +diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c +index fd26ff4..3b4f0cd 100644 +--- a/net/ipv4/esp4.c ++++ b/net/ipv4/esp4.c +@@ -502,9 +502,12 @@ static void esp4_err(struct sk_buff *skb, u32 info) + if (!x) + return; + +- if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) ++ if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) { ++ atomic_inc(&flow_cache_genid); ++ rt_genid_bump(net); ++ + ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_ESP, 0); +- else ++ } else + ipv4_redirect(skb, net, 0, 0, IPPROTO_ESP, 0); + xfrm_state_put(x); + } +diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c +index d3ab47e..9a46dae 100644 +--- a/net/ipv4/ipcomp.c ++++ b/net/ipv4/ipcomp.c +@@ -47,9 +47,12 @@ static void ipcomp4_err(struct sk_buff *skb, u32 info) + if (!x) + return; + +- if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) ++ if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) { ++ atomic_inc(&flow_cache_genid); ++ rt_genid_bump(net); ++ + ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_COMP, 0); +- else ++ } else + ipv4_redirect(skb, net, 0, 0, IPPROTO_COMP, 0); + xfrm_state_put(x); + } diff --git a/main/linux-grsec/APKBUILD b/main/linux-grsec/APKBUILD index 21b4d65f87..5c67e02ba6 100644 --- a/main/linux-grsec/APKBUILD +++ b/main/linux-grsec/APKBUILD @@ -4,7 +4,8 @@ _flavor=grsec pkgname=linux-${_flavor} pkgver=3.6.11 _kernver=3.6 -pkgrel=15 +pkgrel=16 +_al=5 pkgdesc="Linux kernel with grsecurity" url=http://grsecurity.net depends="mkinitfs linux-firmware" @@ -14,8 +15,8 @@ _config=${config:-kernelconfig.${CARCH}} install= source="http://ftp.kernel.org/pub/linux/kernel/v3.x/linux-$_kernver.tar.xz http://ftp.kernel.org/pub/linux/kernel/v3.x/patch-$pkgver.xz - patch-3.6.11-al4.patch - grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch + patch-3.6.11-al${_al}.patch + grsecurity-2.9.1-3.6.11-al${_al}-unofficial-0.patch 0004-arp-flush-arp-cache-on-device-change.patch r8169-num-rx-desc.patch @@ -23,6 +24,7 @@ source="http://ftp.kernel.org/pub/linux/kernel/v3.x/linux-$_kernver.tar.xz r8169-fix-vlan-tag-reordering.patch xsa43-pvops.patch + 5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch kernelconfig.x86 kernelconfig.x86_64 @@ -146,34 +148,37 @@ dev() { md5sums="1a1760420eac802c541a20ab51a093d1 linux-3.6.tar.xz bd4bba74093405887d521309a74c19e9 patch-3.6.11.xz -fa0ca65fb8e9f9d08c04f06ae5c316ec patch-3.6.11-al4.patch -0245ff3264fb1b046f24623947fb4eb7 grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch +bc5dd29ae16718a7bdf3241313999122 patch-3.6.11-al5.patch +5de38a21b1217b13326a862c7b88f1da grsecurity-2.9.1-3.6.11-al5-unofficial-0.patch 776adeeb5272093574f8836c5037dd7d 0004-arp-flush-arp-cache-on-device-change.patch daf2cbb558588c49c138fe9ca2482b64 r8169-num-rx-desc.patch d9b4a528e722d10ba53034ebd440c31b ipv4-remove-output-route-check-in-ipv4_mtu.patch 44a37e1289e1056300574848aea8bd31 r8169-fix-vlan-tag-reordering.patch 2399192c10ba600a086a4c946f1b72f2 xsa43-pvops.patch +3c84d36165b43f0f0f0bdde77c6f68c0 5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch 02ed0c981afbf6a1fc81d5fa9b44e7df kernelconfig.x86 4927251c008b2c2bf5648d732ec63f9d kernelconfig.x86_64" sha256sums="4ab9a6ef1c1735713f9f659d67f92efa7c1dfbffb2a2ad544005b30f9791784f linux-3.6.tar.xz 4bdc3822571a4a765bf6f347aad8b899730acef549ae4236813fd17f254f4327 patch-3.6.11.xz -897ed38d778dfd76256f065f81ad02f16d126dc2e67631253520b8fe0685b444 patch-3.6.11-al4.patch -d67eb0d4437e1c80e3289ef442d68e0b84235d0971b8b347b6340043b869b3ca grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch +7b06dc536709a68cd03918231a8c9c59d236ab7ae898fd80f042413422e6e210 patch-3.6.11-al5.patch +d44e17a36af283c2cfe2d07dc4e0325a110ccf9d29253f605d7f6793d3166ce4 grsecurity-2.9.1-3.6.11-al5-unofficial-0.patch e2d2d1503f53572c6a2e21da729a13a430dd01f510405ffb3a33b29208860bde 0004-arp-flush-arp-cache-on-device-change.patch fdce1143aa10a48582b5bb9cf441b75c6f52701a61f28139970f3110a170fb97 r8169-num-rx-desc.patch c3673636d7604b7b3df665acc0fc0153a76ac6b7f36bb931d235ea1132ac1852 ipv4-remove-output-route-check-in-ipv4_mtu.patch 7ba9b10b04197d3009ad3facabd0bdb2cab870fabcc841716efb1041412a20cd r8169-fix-vlan-tag-reordering.patch 6efe83c9951dcba20f18095814d19089e19230c6876bbdab32cc2f1165bb07c8 xsa43-pvops.patch +ea006140f59d820c61996290434ca6a16f66e6b175e33488b36b650af3592787 5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch c4236fa6150c9cba98280aadc2daccd917410148e06d2231cc8c5370d1735577 kernelconfig.x86 3afefde6d92e1c41f6487c2279c5b707ef42ce42e4f7fe9e37d482c3e24ec3b1 kernelconfig.x86_64" sha512sums="6e3354184d1799228a2d33b92e4a6b743cc24352b8ccc1fd487fab07ab97be2aa03ba87b8406a177581692db1fd40674fbd4e213a782cbe0a6a969b10c4c17a1 linux-3.6.tar.xz 08423f145ee7aef49f50d95032595ee79250135b6ecfa72f802502a277f215b63c4dc04ed149fe4ed7cdaa5ef063b8003b7f72f41d8417e45efbe7e30e621387 patch-3.6.11.xz -477ee6c8bdf8884355efafc29e58810c097a4b1e3ecd84890bf582cf513510266d85a26e38d05ae463429ccfe9dd84cedc2fb1ed0a5fcf662a8a489ca30e6495 patch-3.6.11-al4.patch -bc1e60473292f58c2884e016ba2e5f4e3fbacccd8fdc8856bd46c82e2de2811c6022c458ca5307d57bc1a512e5a65dd350cfe8ab28bc820072e9eec716f0e2c1 grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch +1aaae390ee31a77bd4fa8acc4563ed4a438c6143074364853dcf5126d973d6ad5d39713e76086f36cf06c9027df676b30332f02cfc0de607f4b89e1d3f2ed21f patch-3.6.11-al5.patch +5cefb9bf53bf99a0173a6e1037427d75a4d926b3d9c66fff38355007efa48a07ed6be3e6796537c9e068eb3ea09085d3cf86df5833238318d201c95ca3ed9583 grsecurity-2.9.1-3.6.11-al5-unofficial-0.patch b6fdf376009f0f0f3fa194cb11be97343e4d394cf5d3547de6cfca8ad619c5bd3f60719331fd8cfadc47f09d22be8376ba5f871b46b24887ea73fe47e233a54e 0004-arp-flush-arp-cache-on-device-change.patch d9c91b57415c7c3c365add35565f72ba6225e48212f55abb209e1f426902206543edefb9fc01715357e445b69222a6fb94c3469d701e465450919bad3c83d874 r8169-num-rx-desc.patch fbbaa9c940f70823f5672db04b78de71233ecdda83d0cbeaeac941d732b0e3b18be38a0ed85d7bd03818114d00d9fe00935532968bee5b4673e8fadfda8c0281 ipv4-remove-output-route-check-in-ipv4_mtu.patch 958f5dfb57b6760e92d39027e8ec8d0abc2d99f6b40ef3c108fe90acfe00f3d5fdc2ccebddeffbf70794f6d7a394d985adf40808c2d4c8f7d0591c589b88bbbc r8169-fix-vlan-tag-reordering.patch 383c00a2520f0e27a4e51ef4e499cd8dc33f75ef4d3d5eab22944126c41de20dccf563d1d05cd557cae4091167de78f44ec5bfb76e33f503b36b5e3d756fcaed xsa43-pvops.patch +7016cdac82e9969636920e5e8accafcf7b160fb5afa2ce79fc43ee0b0591afe825f047efa18c7e7b0b310085298221a8b751ff1dd51eee940fa262f0b7054813 5-5-xfrm4-Invalidate-all-ipv4-routes-on-IPsec-pmtu-events.patch 065fff74ab7f885a45d98a1cd2bc5aaf6cb9a08d830297aaab54b512b7c90d692e37101810ee36a1f26e757990f763b664788a858b3ab40d0b4821205b9d3995 kernelconfig.x86 ba9a0b035a97089e51e0a0b723c69148866dabb4baf74c870a005350f7bfd789ab47595c7bc7e218de6d7479d16279cb906aee2ffeda9a6b141ad43ecc26dd4f kernelconfig.x86_64" diff --git a/main/linux-grsec/grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch b/main/linux-grsec/grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch deleted file mode 100644 index c198dfbb6f..0000000000 --- a/main/linux-grsec/grsecurity-2.9.1-3.6.11-al4-unofficial-0.patch +++ /dev/null @@ -1,91005 +0,0 @@ -diff --git a/Documentation/dontdiff b/Documentation/dontdiff -index 39462cf..611a556 100644 ---- a/Documentation/dontdiff -+++ b/Documentation/dontdiff -@@ -2,9 +2,11 @@ - *.aux - *.bin - *.bz2 -+*.c.[012]*.* - *.cis - *.cpio - *.csp -+*.dbg - *.dsp - *.dvi - *.elf -@@ -14,6 +16,7 @@ - *.gcov - *.gen.S - *.gif -+*.gmo - *.grep - *.grp - *.gz -@@ -48,14 +51,17 @@ - *.tab.h - *.tex - *.ver -+*.vim - *.xml - *.xz - *_MODULES -+*_reg_safe.h - *_vga16.c - *~ - \#*# - *.9 --.* -+.[^g]* -+.gen* - .*.d - .mm - 53c700_d.h -@@ -69,6 +75,7 @@ Image - Module.markers - Module.symvers - PENDING -+PERF* - SCCS - System.map* - TAGS -@@ -80,6 +87,7 @@ aic7*seq.h* - aicasm - aicdb.h* - altivec*.c -+ashldi3.S - asm-offsets.h - asm_offsets.h - autoconf.h* -@@ -92,19 +100,24 @@ bounds.h - bsetup - btfixupprep - build -+builtin-policy.h - bvmlinux - bzImage* - capability_names.h - capflags.c - classlist.h* -+clut_vga16.c -+common-cmds.h - comp*.log - compile.h* - conf - config - config-* - config_data.h* -+config.c - config.mak - config.mak.autogen -+config.tmp - conmakehash - consolemap_deftbl.c* - cpustr.h -@@ -115,9 +128,11 @@ devlist.h* - dnotify_test - docproc - dslm -+dtc-lexer.lex.c - elf2ecoff - elfconfig.h* - evergreen_reg_safe.h -+exception_policy.conf - fixdep - flask.h - fore200e_mkfirm -@@ -125,12 +140,15 @@ fore200e_pca_fw.c* - gconf - gconf.glade.h - gen-devlist -+gen-kdb_cmds.c - gen_crc32table - gen_init_cpio - generated - genheaders - genksyms - *_gray256.c -+hash -+hid-example - hpet_example - hugepage-mmap - hugepage-shm -@@ -145,14 +163,14 @@ int32.c - int4.c - int8.c - kallsyms --kconfig -+kern_constants.h - keywords.c - ksym.c* - ksym.h* - kxgettext - lex.c - lex.*.c --linux -+lib1funcs.S - logo_*.c - logo_*_clut224.c - logo_*_mono.c -@@ -163,14 +181,15 @@ machtypes.h - map - map_hugetlb - maui_boot.h --media - mconf -+mdp - miboot* - mk_elfconfig - mkboot - mkbugboot - mkcpustr - mkdep -+mkpiggy - mkprep - mkregtable - mktables -@@ -187,6 +206,8 @@ oui.c* - page-types - parse.c - parse.h -+parse-events* -+pasyms.h - patches* - pca200e.bin - pca200e_ecd.bin2 -@@ -196,6 +217,7 @@ perf-archive - piggyback - piggy.gzip - piggy.S -+pmu-* - pnmtologo - ppc_defs.h* - pss_boot.h -@@ -205,7 +227,10 @@ r200_reg_safe.h - r300_reg_safe.h - r420_reg_safe.h - r600_reg_safe.h -+realmode.lds -+realmode.relocs - recordmcount -+regdb.c - relocs - rlim_names.h - rn50_reg_safe.h -@@ -215,8 +240,11 @@ series - setup - setup.bin - setup.elf -+size_overflow_hash.h - sImage -+slabinfo - sm_tbl* -+sortextable - split-include - syscalltab.h - tables.c -@@ -226,6 +254,7 @@ tftpboot.img - timeconst.h - times.h* - trix_boot.h -+user_constants.h - utsrelease.h* - vdso-syms.lds - vdso.lds -@@ -237,13 +266,17 @@ vdso32.lds - vdso32.so.dbg - vdso64.lds - vdso64.so.dbg -+vdsox32.lds -+vdsox32-syms.lds - version.h* - vmImage - vmlinux - vmlinux-* - vmlinux.aout - vmlinux.bin.all -+vmlinux.bin.bz2 - vmlinux.lds -+vmlinux.relocs - vmlinuz - voffset.h - vsyscall.lds -@@ -251,9 +284,11 @@ vsyscall_32.lds - wanxlfw.inc - uImage - unifdef -+utsrelease.h - wakeup.bin - wakeup.elf - wakeup.lds - zImage* - zconf.hash.c -+zconf.lex.c - zoffset.h -diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt -index ad7e2e5..199f49e 100644 ---- a/Documentation/kernel-parameters.txt -+++ b/Documentation/kernel-parameters.txt -@@ -905,6 +905,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. - gpt [EFI] Forces disk with valid GPT signature but - invalid Protective MBR to be treated as GPT. - -+ grsec_proc_gid= [GRKERNSEC_PROC_USERGROUP] Chooses GID to -+ ignore grsecurity's /proc restrictions -+ - hashdist= [KNL,NUMA] Large hashes allocated during boot - are distributed across NUMA nodes. Defaults on - for 64-bit NUMA, off otherwise. -@@ -2050,6 +2053,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. - the specified number of seconds. This is to be used if - your oopses keep scrolling off the screen. - -+ pax_nouderef [X86] disables UDEREF. Most likely needed under certain -+ virtualization environments that don't cope well with the -+ expand down segment used by UDEREF on X86-32 or the frequent -+ page table updates on X86-64. -+ -+ pax_softmode= 0/1 to disable/enable PaX softmode on boot already. -+ - pcbit= [HW,ISDN] - - pcd. [PARIDE] -diff --git a/Makefile b/Makefile -index 50dc4d1..52b593c 100644 ---- a/Makefile -+++ b/Makefile -@@ -241,8 +241,9 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ - - HOSTCC = gcc - HOSTCXX = g++ --HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer --HOSTCXXFLAGS = -O2 -+HOSTCFLAGS = -Wall -W -Wmissing-prototypes -Wstrict-prototypes -Wno-unused-parameter -Wno-missing-field-initializers -O2 -fomit-frame-pointer -fno-delete-null-pointer-checks -+HOSTCLFAGS += $(call cc-option, -Wno-empty-body) -+HOSTCXXFLAGS = -O2 -Wall -W -fno-delete-null-pointer-checks - - # Decide whether to build built-in, modular, or both. - # Normally, just do built-in. -@@ -404,8 +405,8 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ - # Rules shared between *config targets and build targets - - # Basic helpers built in scripts/ --PHONY += scripts_basic --scripts_basic: -+PHONY += scripts_basic gcc-plugins -+scripts_basic: gcc-plugins - $(Q)$(MAKE) $(build)=scripts/basic - $(Q)rm -f .tmp_quiet_recordmcount - -@@ -561,6 +562,60 @@ else - KBUILD_CFLAGS += -O2 - endif - -+ifndef DISABLE_PAX_PLUGINS -+PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)") -+ifneq ($(PLUGINCC),) -+ifndef DISABLE_PAX_CONSTIFY_PLUGIN -+ifndef CONFIG_UML -+CONSTIFY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/constify_plugin.so -DCONSTIFY_PLUGIN -+endif -+endif -+ifdef CONFIG_PAX_MEMORY_STACKLEAK -+STACKLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/stackleak_plugin.so -DSTACKLEAK_PLUGIN -+STACKLEAK_PLUGIN_CFLAGS += -fplugin-arg-stackleak_plugin-track-lowest-sp=100 -+endif -+ifdef CONFIG_KALLOCSTAT_PLUGIN -+KALLOCSTAT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kallocstat_plugin.so -+endif -+ifdef CONFIG_PAX_KERNEXEC_PLUGIN -+KERNEXEC_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kernexec_plugin.so -+KERNEXEC_PLUGIN_CFLAGS += -fplugin-arg-kernexec_plugin-method=$(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD) -DKERNEXEC_PLUGIN -+KERNEXEC_PLUGIN_AFLAGS := -DKERNEXEC_PLUGIN -+endif -+ifdef CONFIG_CHECKER_PLUGIN -+ifeq ($(call cc-ifversion, -ge, 0406, y), y) -+CHECKER_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/checker_plugin.so -DCHECKER_PLUGIN -+endif -+endif -+COLORIZE_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/colorize_plugin.so -+ifdef CONFIG_PAX_SIZE_OVERFLOW -+SIZE_OVERFLOW_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/size_overflow_plugin.so -DSIZE_OVERFLOW_PLUGIN -+endif -+ifdef CONFIG_PAX_LATENT_ENTROPY -+LATENT_ENTROPY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/latent_entropy_plugin.so -DLATENT_ENTROPY_PLUGIN -+endif -+GCC_PLUGINS_CFLAGS := $(CONSTIFY_PLUGIN_CFLAGS) $(STACKLEAK_PLUGIN_CFLAGS) $(KALLOCSTAT_PLUGIN_CFLAGS) -+GCC_PLUGINS_CFLAGS += $(KERNEXEC_PLUGIN_CFLAGS) $(CHECKER_PLUGIN_CFLAGS) $(COLORIZE_PLUGIN_CFLAGS) -+GCC_PLUGINS_CFLAGS += $(SIZE_OVERFLOW_PLUGIN_CFLAGS) $(LATENT_ENTROPY_PLUGIN_CFLAGS) -+GCC_PLUGINS_AFLAGS := $(KERNEXEC_PLUGIN_AFLAGS) -+export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGINS_AFLAGS CONSTIFY_PLUGIN -+ifeq ($(KBUILD_EXTMOD),) -+gcc-plugins: -+ $(Q)$(MAKE) $(build)=tools/gcc -+else -+gcc-plugins: ; -+endif -+else -+gcc-plugins: -+ifeq ($(call cc-ifversion, -ge, 0405, y), y) -+ $(error Your gcc installation does not support plugins. If the necessary headers for plugin support are missing, they should be installed. On Debian, apt-get install gcc--plugin-dev. If you choose to ignore this error and lessen the improvements provided by this patch, re-run make with the DISABLE_PAX_PLUGINS=y argument.)) -+else -+ $(Q)echo "warning, your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least" -+endif -+ $(Q)echo "PAX_MEMORY_STACKLEAK and other features will be less secure" -+endif -+endif -+ - include $(srctree)/arch/$(SRCARCH)/Makefile - - ifdef CONFIG_READABLE_ASM -@@ -715,7 +770,7 @@ export mod_strip_cmd - - - ifeq ($(KBUILD_EXTMOD),) --core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ -+core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/ - - vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ - $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ -@@ -762,6 +817,8 @@ endif - - # The actual objects are generated when descending, - # make sure no implicit rule kicks in -+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) - $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; - - # Handle descending into subdirectories listed in $(vmlinux-dirs) -@@ -771,7 +828,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; - # Error messages still appears in the original language - - PHONY += $(vmlinux-dirs) --$(vmlinux-dirs): prepare scripts -+$(vmlinux-dirs): gcc-plugins prepare scripts - $(Q)$(MAKE) $(build)=$@ - - # Store (new) KERNELRELASE string in include/config/kernel.release -@@ -815,6 +872,7 @@ prepare0: archprepare FORCE - $(Q)$(MAKE) $(build)=. - - # All the preparing.. -+prepare: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS)) - prepare: prepare0 - - # Generate some files -@@ -922,6 +980,8 @@ all: modules - # using awk while concatenating to the final file. - - PHONY += modules -+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) - modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin - $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order - @$(kecho) ' Building modules, stage 2.'; -@@ -937,7 +997,7 @@ modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) - - # Target to prepare building external modules - PHONY += modules_prepare --modules_prepare: prepare scripts -+modules_prepare: gcc-plugins prepare scripts - - # Target to install modules - PHONY += modules_install -@@ -994,7 +1054,7 @@ CLEAN_DIRS += $(MODVERDIR) - MRPROPER_DIRS += include/config usr/include include/generated \ - arch/*/include/generated - MRPROPER_FILES += .config .config.old .version .old_version \ -- include/linux/version.h \ -+ include/linux/version.h tools/gcc/size_overflow_hash.h\ - Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS - - # clean - Delete most, but leave enough to build external modules -@@ -1032,6 +1092,7 @@ distclean: mrproper - \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ - -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ - -o -name '.*.rej' \ -+ -o -name '.*.rej' -o -name '*.so' \ - -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ - -type f -print | xargs rm -f - -@@ -1192,6 +1253,8 @@ PHONY += $(module-dirs) modules - $(module-dirs): crmodverdir $(objtree)/Module.symvers - $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) - -+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) - modules: $(module-dirs) - @$(kecho) ' Building modules, stage 2.'; - $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost -@@ -1326,17 +1389,21 @@ else - target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) - endif - --%.s: %.c prepare scripts FORCE -+%.s: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+%.s: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) -+%.s: %.c gcc-plugins prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) - %.i: %.c prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) --%.o: %.c prepare scripts FORCE -+%.o: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+%.o: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) -+%.o: %.c gcc-plugins prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) - %.lst: %.c prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) --%.s: %.S prepare scripts FORCE -+%.s: %.S gcc-plugins prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) --%.o: %.S prepare scripts FORCE -+%.o: %.S gcc-plugins prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) - %.symtypes: %.c prepare scripts FORCE - $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -@@ -1346,11 +1413,15 @@ endif - $(cmd_crmodverdir) - $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ - $(build)=$(build-dir) --%/: prepare scripts FORCE -+%/: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+%/: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) -+%/: gcc-plugins prepare scripts FORCE - $(cmd_crmodverdir) - $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ - $(build)=$(build-dir) --%.ko: prepare scripts FORCE -+%.ko: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) -+%.ko: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) -+%.ko: gcc-plugins prepare scripts FORCE - $(cmd_crmodverdir) - $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ - $(build)=$(build-dir) $(@:.ko=.o) -diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h -index c2cbe4f..f7264b4 100644 ---- a/arch/alpha/include/asm/atomic.h -+++ b/arch/alpha/include/asm/atomic.h -@@ -250,6 +250,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) - #define atomic_dec(v) atomic_sub(1,(v)) - #define atomic64_dec(v) atomic64_sub(1,(v)) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - #define smp_mb__before_atomic_dec() smp_mb() - #define smp_mb__after_atomic_dec() smp_mb() - #define smp_mb__before_atomic_inc() smp_mb() -diff --git a/arch/alpha/include/asm/cache.h b/arch/alpha/include/asm/cache.h -index ad368a9..fbe0f25 100644 ---- a/arch/alpha/include/asm/cache.h -+++ b/arch/alpha/include/asm/cache.h -@@ -4,19 +4,19 @@ - #ifndef __ARCH_ALPHA_CACHE_H - #define __ARCH_ALPHA_CACHE_H - -+#include - - /* Bytes per L1 (data) cache line. */ - #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6) --# define L1_CACHE_BYTES 64 - # define L1_CACHE_SHIFT 6 - #else - /* Both EV4 and EV5 are write-through, read-allocate, - direct-mapped, physical. - */ --# define L1_CACHE_BYTES 32 - # define L1_CACHE_SHIFT 5 - #endif - -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - #define SMP_CACHE_BYTES L1_CACHE_BYTES - - #endif -diff --git a/arch/alpha/include/asm/elf.h b/arch/alpha/include/asm/elf.h -index 968d999..d36b2df 100644 ---- a/arch/alpha/include/asm/elf.h -+++ b/arch/alpha/include/asm/elf.h -@@ -91,6 +91,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; - - #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL) -+ -+#define PAX_DELTA_MMAP_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 28) -+#define PAX_DELTA_STACK_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 19) -+#endif -+ - /* $0 is set by ld.so to a pointer to a function which might be - registered using atexit. This provides a mean for the dynamic - linker to call DT_FINI functions for shared libraries that have -diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h -index bc2a0da..8ad11ee 100644 ---- a/arch/alpha/include/asm/pgalloc.h -+++ b/arch/alpha/include/asm/pgalloc.h -@@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) - pgd_set(pgd, pmd); - } - -+static inline void -+pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) -+{ -+ pgd_populate(mm, pgd, pmd); -+} -+ - extern pgd_t *pgd_alloc(struct mm_struct *mm); - - static inline void -diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h -index 81a4342..348b927 100644 ---- a/arch/alpha/include/asm/pgtable.h -+++ b/arch/alpha/include/asm/pgtable.h -@@ -102,6 +102,17 @@ struct vm_area_struct; - #define PAGE_SHARED __pgprot(_PAGE_VALID | __ACCESS_BITS) - #define PAGE_COPY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) - #define PAGE_READONLY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE) -+# define PAGE_COPY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) -+# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) -+#else -+# define PAGE_SHARED_NOEXEC PAGE_SHARED -+# define PAGE_COPY_NOEXEC PAGE_COPY -+# define PAGE_READONLY_NOEXEC PAGE_READONLY -+#endif -+ - #define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE) - - #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x)) -diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c -index 2fd00b7..cfd5069 100644 ---- a/arch/alpha/kernel/module.c -+++ b/arch/alpha/kernel/module.c -@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab, - - /* The small sections were sorted to the end of the segment. - The following should definitely cover them. */ -- gp = (u64)me->module_core + me->core_size - 0x8000; -+ gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000; - got = sechdrs[me->arch.gotsecindex].sh_addr; - - for (i = 0; i < n; i++) { -diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c -index bc1acdd..a922a6d 100644 ---- a/arch/alpha/kernel/osf_sys.c -+++ b/arch/alpha/kernel/osf_sys.c -@@ -1312,7 +1312,7 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len, - /* At this point: (!vma || addr < vma->vm_end). */ - if (limit - len < addr) - return -ENOMEM; -- if (!vma || addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - return addr; - addr = vma->vm_end; - vma = vma->vm_next; -@@ -1348,6 +1348,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, - merely specific addresses, but regions of memory -- perhaps - this feature should be incorporated into all ports? */ - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - if (addr) { - addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); - if (addr != (unsigned long) -ENOMEM) -@@ -1355,8 +1359,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, - } - - /* Next, try allocating at TASK_UNMAPPED_BASE. */ -- addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), -- len, limit); -+ addr = arch_get_unmapped_area_1 (PAGE_ALIGN(current->mm->mmap_base), len, limit); -+ - if (addr != (unsigned long) -ENOMEM) - return addr; - -diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c -index 0c4132d..88f0d53 100644 ---- a/arch/alpha/mm/fault.c -+++ b/arch/alpha/mm/fault.c -@@ -53,6 +53,124 @@ __load_new_mm_context(struct mm_struct *next_mm) - __reload_thread(pcb); - } - -+#ifdef CONFIG_PAX_PAGEEXEC -+/* -+ * PaX: decide what to do with offenders (regs->pc = fault address) -+ * -+ * returns 1 when task should be killed -+ * 2 when patched PLT trampoline was detected -+ * 3 when unpatched PLT trampoline was detected -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ -+#ifdef CONFIG_PAX_EMUPLT -+ int err; -+ -+ do { /* PaX: patched PLT emulation #1 */ -+ unsigned int ldah, ldq, jmp; -+ -+ err = get_user(ldah, (unsigned int *)regs->pc); -+ err |= get_user(ldq, (unsigned int *)(regs->pc+4)); -+ err |= get_user(jmp, (unsigned int *)(regs->pc+8)); -+ -+ if (err) -+ break; -+ -+ if ((ldah & 0xFFFF0000U) == 0x277B0000U && -+ (ldq & 0xFFFF0000U) == 0xA77B0000U && -+ jmp == 0x6BFB0000U) -+ { -+ unsigned long r27, addr; -+ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; -+ unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL; -+ -+ addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); -+ err = get_user(r27, (unsigned long *)addr); -+ if (err) -+ break; -+ -+ regs->r27 = r27; -+ regs->pc = r27; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #2 */ -+ unsigned int ldah, lda, br; -+ -+ err = get_user(ldah, (unsigned int *)regs->pc); -+ err |= get_user(lda, (unsigned int *)(regs->pc+4)); -+ err |= get_user(br, (unsigned int *)(regs->pc+8)); -+ -+ if (err) -+ break; -+ -+ if ((ldah & 0xFFFF0000U) == 0x277B0000U && -+ (lda & 0xFFFF0000U) == 0xA77B0000U && -+ (br & 0xFFE00000U) == 0xC3E00000U) -+ { -+ unsigned long addr = br | 0xFFFFFFFFFFE00000UL; -+ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; -+ unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL; -+ -+ regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); -+ regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: unpatched PLT emulation */ -+ unsigned int br; -+ -+ err = get_user(br, (unsigned int *)regs->pc); -+ -+ if (!err && (br & 0xFFE00000U) == 0xC3800000U) { -+ unsigned int br2, ldq, nop, jmp; -+ unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver; -+ -+ addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); -+ err = get_user(br2, (unsigned int *)addr); -+ err |= get_user(ldq, (unsigned int *)(addr+4)); -+ err |= get_user(nop, (unsigned int *)(addr+8)); -+ err |= get_user(jmp, (unsigned int *)(addr+12)); -+ err |= get_user(resolver, (unsigned long *)(addr+16)); -+ -+ if (err) -+ break; -+ -+ if (br2 == 0xC3600000U && -+ ldq == 0xA77B000CU && -+ nop == 0x47FF041FU && -+ jmp == 0x6B7B0000U) -+ { -+ regs->r28 = regs->pc+4; -+ regs->r27 = addr+16; -+ regs->pc = resolver; -+ return 3; -+ } -+ } -+ } while (0); -+#endif -+ -+ return 1; -+} -+ -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 5; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif - - /* - * This routine handles page faults. It determines the address, -@@ -133,8 +251,29 @@ retry: - good_area: - si_code = SEGV_ACCERR; - if (cause < 0) { -- if (!(vma->vm_flags & VM_EXEC)) -+ if (!(vma->vm_flags & VM_EXEC)) { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc) -+ goto bad_area; -+ -+ up_read(&mm->mmap_sem); -+ switch (pax_handle_fetch_fault(regs)) { -+ -+#ifdef CONFIG_PAX_EMUPLT -+ case 2: -+ case 3: -+ return; -+#endif -+ -+ } -+ pax_report_fault(regs, (void *)regs->pc, (void *)rdusp()); -+ do_group_exit(SIGKILL); -+#else - goto bad_area; -+#endif -+ -+ } - } else if (!cause) { - /* Allow reads even for write-only mappings */ - if (!(vma->vm_flags & (VM_READ | VM_WRITE))) -diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h -index c79f61f..9ac0642 100644 ---- a/arch/arm/include/asm/atomic.h -+++ b/arch/arm/include/asm/atomic.h -@@ -17,17 +17,35 @@ - #include - #include - -+#ifdef CONFIG_GENERIC_ATOMIC64 -+#include -+#endif -+ - #define ATOMIC_INIT(i) { (i) } - - #ifdef __KERNEL__ - -+#define _ASM_EXTABLE(from, to) \ -+" .pushsection __ex_table,\"a\"\n"\ -+" .align 3\n" \ -+" .long " #from ", " #to"\n" \ -+" .popsection" -+ - /* - * On ARM, ordinary assignment (str instruction) doesn't clear the local - * strex/ldrex monitor on some implementations. The reason we can use it for - * atomic_set() is the clrex or dummy strex done on every exception return. - */ - #define atomic_read(v) (*(volatile int *)&(v)->counter) -+static inline int atomic_read_unchecked(const atomic_unchecked_t *v) -+{ -+ return v->counter; -+} - #define atomic_set(v,i) (((v)->counter) = (i)) -+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) -+{ -+ v->counter = i; -+} - - #if __LINUX_ARM_ARCH__ >= 6 - -@@ -42,6 +60,35 @@ static inline void atomic_add(int i, atomic_t *v) - int result; - - __asm__ __volatile__("@ atomic_add\n" -+"1: ldrex %1, [%3]\n" -+" adds %0, %1, %4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strex %1, %0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "Ir" (i) -+ : "cc"); -+} -+ -+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) -+{ -+ unsigned long tmp; -+ int result; -+ -+ __asm__ __volatile__("@ atomic_add_unchecked\n" - "1: ldrex %0, [%3]\n" - " add %0, %0, %4\n" - " strex %1, %0, [%3]\n" -@@ -60,6 +107,42 @@ static inline int atomic_add_return(int i, atomic_t *v) - smp_mb(); - - __asm__ __volatile__("@ atomic_add_return\n" -+"1: ldrex %1, [%3]\n" -+" adds %0, %1, %4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+" mov %0, %1\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strex %1, %0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "Ir" (i) -+ : "cc"); -+ -+ smp_mb(); -+ -+ return result; -+} -+ -+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) -+{ -+ unsigned long tmp; -+ int result; -+ -+ smp_mb(); -+ -+ __asm__ __volatile__("@ atomic_add_return_unchecked\n" - "1: ldrex %0, [%3]\n" - " add %0, %0, %4\n" - " strex %1, %0, [%3]\n" -@@ -80,6 +163,35 @@ static inline void atomic_sub(int i, atomic_t *v) - int result; - - __asm__ __volatile__("@ atomic_sub\n" -+"1: ldrex %1, [%3]\n" -+" subs %0, %1, %4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strex %1, %0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "Ir" (i) -+ : "cc"); -+} -+ -+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) -+{ -+ unsigned long tmp; -+ int result; -+ -+ __asm__ __volatile__("@ atomic_sub_unchecked\n" - "1: ldrex %0, [%3]\n" - " sub %0, %0, %4\n" - " strex %1, %0, [%3]\n" -@@ -98,11 +210,25 @@ static inline int atomic_sub_return(int i, atomic_t *v) - smp_mb(); - - __asm__ __volatile__("@ atomic_sub_return\n" --"1: ldrex %0, [%3]\n" --" sub %0, %0, %4\n" -+"1: ldrex %1, [%3]\n" -+" subs %0, %1, %4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+" mov %0, %1\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ - " strex %1, %0, [%3]\n" - " teq %1, #0\n" - " bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ - : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) - : "r" (&v->counter), "Ir" (i) - : "cc"); -@@ -134,6 +260,28 @@ static inline int atomic_cmpxchg(atomic_t *ptr, int old, int new) - return oldval; - } - -+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new) -+{ -+ unsigned long oldval, res; -+ -+ smp_mb(); -+ -+ do { -+ __asm__ __volatile__("@ atomic_cmpxchg_unchecked\n" -+ "ldrex %1, [%3]\n" -+ "mov %0, #0\n" -+ "teq %1, %4\n" -+ "strexeq %0, %5, [%3]\n" -+ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter) -+ : "r" (&ptr->counter), "Ir" (old), "r" (new) -+ : "cc"); -+ } while (res); -+ -+ smp_mb(); -+ -+ return oldval; -+} -+ - static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) - { - unsigned long tmp, tmp2; -@@ -167,7 +315,17 @@ static inline int atomic_add_return(int i, atomic_t *v) - - return val; - } -+ -+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) -+{ -+ return atomic_add_return(i, v); -+} -+ - #define atomic_add(i, v) (void) atomic_add_return(i, v) -+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) -+{ -+ (void) atomic_add_return(i, v); -+} - - static inline int atomic_sub_return(int i, atomic_t *v) - { -@@ -182,6 +340,10 @@ static inline int atomic_sub_return(int i, atomic_t *v) - return val; - } - #define atomic_sub(i, v) (void) atomic_sub_return(i, v) -+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) -+{ -+ (void) atomic_sub_return(i, v); -+} - - static inline int atomic_cmpxchg(atomic_t *v, int old, int new) - { -@@ -197,6 +359,11 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) - return ret; - } - -+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) -+{ -+ return atomic_cmpxchg(v, old, new); -+} -+ - static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) - { - unsigned long flags; -@@ -209,6 +376,10 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) - #endif /* __LINUX_ARM_ARCH__ */ - - #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) -+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) -+{ -+ return xchg(&v->counter, new); -+} - - static inline int __atomic_add_unless(atomic_t *v, int a, int u) - { -@@ -221,11 +392,27 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) - } - - #define atomic_inc(v) atomic_add(1, v) -+static inline void atomic_inc_unchecked(atomic_unchecked_t *v) -+{ -+ atomic_add_unchecked(1, v); -+} - #define atomic_dec(v) atomic_sub(1, v) -+static inline void atomic_dec_unchecked(atomic_unchecked_t *v) -+{ -+ atomic_sub_unchecked(1, v); -+} - - #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0) -+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) -+{ -+ return atomic_add_return_unchecked(1, v) == 0; -+} - #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0) - #define atomic_inc_return(v) (atomic_add_return(1, v)) -+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) -+{ -+ return atomic_add_return_unchecked(1, v); -+} - #define atomic_dec_return(v) (atomic_sub_return(1, v)) - #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) - -@@ -241,6 +428,14 @@ typedef struct { - u64 __aligned(8) counter; - } atomic64_t; - -+#ifdef CONFIG_PAX_REFCOUNT -+typedef struct { -+ u64 __aligned(8) counter; -+} atomic64_unchecked_t; -+#else -+typedef atomic64_t atomic64_unchecked_t; -+#endif -+ - #define ATOMIC64_INIT(i) { (i) } - - static inline u64 atomic64_read(const atomic64_t *v) -@@ -256,6 +451,19 @@ static inline u64 atomic64_read(const atomic64_t *v) - return result; - } - -+static inline u64 atomic64_read_unchecked(atomic64_unchecked_t *v) -+{ -+ u64 result; -+ -+ __asm__ __volatile__("@ atomic64_read_unchecked\n" -+" ldrexd %0, %H0, [%1]" -+ : "=&r" (result) -+ : "r" (&v->counter), "Qo" (v->counter) -+ ); -+ -+ return result; -+} -+ - static inline void atomic64_set(atomic64_t *v, u64 i) - { - u64 tmp; -@@ -270,6 +478,20 @@ static inline void atomic64_set(atomic64_t *v, u64 i) - : "cc"); - } - -+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, u64 i) -+{ -+ u64 tmp; -+ -+ __asm__ __volatile__("@ atomic64_set_unchecked\n" -+"1: ldrexd %0, %H0, [%2]\n" -+" strexd %0, %3, %H3, [%2]\n" -+" teq %0, #0\n" -+" bne 1b" -+ : "=&r" (tmp), "=Qo" (v->counter) -+ : "r" (&v->counter), "r" (i) -+ : "cc"); -+} -+ - static inline void atomic64_add(u64 i, atomic64_t *v) - { - u64 result; -@@ -278,6 +500,36 @@ static inline void atomic64_add(u64 i, atomic64_t *v) - __asm__ __volatile__("@ atomic64_add\n" - "1: ldrexd %0, %H0, [%3]\n" - " adds %0, %0, %4\n" -+" adcs %H0, %H0, %H4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strexd %1, %0, %H0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "r" (i) -+ : "cc"); -+} -+ -+static inline void atomic64_add_unchecked(u64 i, atomic64_unchecked_t *v) -+{ -+ u64 result; -+ unsigned long tmp; -+ -+ __asm__ __volatile__("@ atomic64_add_unchecked\n" -+"1: ldrexd %0, %H0, [%3]\n" -+" adds %0, %0, %4\n" - " adc %H0, %H0, %H4\n" - " strexd %1, %0, %H0, [%3]\n" - " teq %1, #0\n" -@@ -289,12 +541,49 @@ static inline void atomic64_add(u64 i, atomic64_t *v) - - static inline u64 atomic64_add_return(u64 i, atomic64_t *v) - { -+ u64 result, tmp; -+ -+ smp_mb(); -+ -+ __asm__ __volatile__("@ atomic64_add_return\n" -+"1: ldrexd %1, %H1, [%3]\n" -+" adds %0, %1, %4\n" -+" adcs %H0, %H1, %H4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+" mov %0, %1\n" -+" mov %H0, %H1\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strexd %1, %0, %H0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "r" (i) -+ : "cc"); -+ -+ smp_mb(); -+ -+ return result; -+} -+ -+static inline u64 atomic64_add_return_unchecked(u64 i, atomic64_unchecked_t *v) -+{ - u64 result; - unsigned long tmp; - - smp_mb(); - -- __asm__ __volatile__("@ atomic64_add_return\n" -+ __asm__ __volatile__("@ atomic64_add_return_unchecked\n" - "1: ldrexd %0, %H0, [%3]\n" - " adds %0, %0, %4\n" - " adc %H0, %H0, %H4\n" -@@ -318,23 +607,34 @@ static inline void atomic64_sub(u64 i, atomic64_t *v) - __asm__ __volatile__("@ atomic64_sub\n" - "1: ldrexd %0, %H0, [%3]\n" - " subs %0, %0, %4\n" --" sbc %H0, %H0, %H4\n" -+" sbcs %H0, %H0, %H4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ - " strexd %1, %0, %H0, [%3]\n" - " teq %1, #0\n" - " bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ - : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) - : "r" (&v->counter), "r" (i) - : "cc"); - } - --static inline u64 atomic64_sub_return(u64 i, atomic64_t *v) -+static inline void atomic64_sub_unchecked(u64 i, atomic64_unchecked_t *v) - { - u64 result; - unsigned long tmp; - -- smp_mb(); -- -- __asm__ __volatile__("@ atomic64_sub_return\n" -+ __asm__ __volatile__("@ atomic64_sub_unchecked\n" - "1: ldrexd %0, %H0, [%3]\n" - " subs %0, %0, %4\n" - " sbc %H0, %H0, %H4\n" -@@ -344,6 +644,39 @@ static inline u64 atomic64_sub_return(u64 i, atomic64_t *v) - : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) - : "r" (&v->counter), "r" (i) - : "cc"); -+} -+ -+static inline u64 atomic64_sub_return(u64 i, atomic64_t *v) -+{ -+ u64 result, tmp; -+ -+ smp_mb(); -+ -+ __asm__ __volatile__("@ atomic64_sub_return\n" -+"1: ldrexd %1, %H1, [%3]\n" -+" subs %0, %1, %4\n" -+" sbcs %H0, %H1, %H4\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+" mov %0, %1\n" -+" mov %H0, %H1\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ -+" strexd %1, %0, %H0, [%3]\n" -+" teq %1, #0\n" -+" bne 1b" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+"\n4:\n" -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ -+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) -+ : "r" (&v->counter), "r" (i) -+ : "cc"); - - smp_mb(); - -@@ -374,6 +707,30 @@ static inline u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old, u64 new) - return oldval; - } - -+static inline u64 atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, u64 old, u64 new) -+{ -+ u64 oldval; -+ unsigned long res; -+ -+ smp_mb(); -+ -+ do { -+ __asm__ __volatile__("@ atomic64_cmpxchg_unchecked\n" -+ "ldrexd %1, %H1, [%3]\n" -+ "mov %0, #0\n" -+ "teq %1, %4\n" -+ "teqeq %H1, %H4\n" -+ "strexdeq %0, %5, %H5, [%3]" -+ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter) -+ : "r" (&ptr->counter), "r" (old), "r" (new) -+ : "cc"); -+ } while (res); -+ -+ smp_mb(); -+ -+ return oldval; -+} -+ - static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new) - { - u64 result; -@@ -397,21 +754,34 @@ static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new) - - static inline u64 atomic64_dec_if_positive(atomic64_t *v) - { -- u64 result; -- unsigned long tmp; -+ u64 result, tmp; - - smp_mb(); - - __asm__ __volatile__("@ atomic64_dec_if_positive\n" --"1: ldrexd %0, %H0, [%3]\n" --" subs %0, %0, #1\n" --" sbc %H0, %H0, #0\n" -+"1: ldrexd %1, %H1, [%3]\n" -+" subs %0, %1, #1\n" -+" sbcs %H0, %H1, #0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+" mov %0, %1\n" -+" mov %H0, %H1\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ - " teq %H0, #0\n" --" bmi 2f\n" -+" bmi 4f\n" - " strexd %1, %0, %H0, [%3]\n" - " teq %1, #0\n" - " bne 1b\n" --"2:" -+"4:\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ - : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) - : "r" (&v->counter) - : "cc"); -@@ -434,13 +804,25 @@ static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u) - " teq %0, %5\n" - " teqeq %H0, %H5\n" - " moveq %1, #0\n" --" beq 2f\n" -+" beq 4f\n" - " adds %0, %0, %6\n" --" adc %H0, %H0, %H6\n" -+" adcs %H0, %H0, %H6\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" bvc 3f\n" -+"2: bkpt 0xf103\n" -+"3:\n" -+#endif -+ - " strexd %2, %0, %H0, [%4]\n" - " teq %2, #0\n" - " bne 1b\n" --"2:" -+"4:\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ _ASM_EXTABLE(2b, 4b) -+#endif -+ - : "=&r" (val), "+r" (ret), "=&r" (tmp), "+Qo" (v->counter) - : "r" (&v->counter), "r" (u), "r" (a) - : "cc"); -@@ -453,10 +835,13 @@ static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u) - - #define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) - #define atomic64_inc(v) atomic64_add(1LL, (v)) -+#define atomic64_inc_unchecked(v) atomic64_add_unchecked(1LL, (v)) - #define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) -+#define atomic64_inc_return_unchecked(v) atomic64_add_return_unchecked(1LL, (v)) - #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) - #define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) - #define atomic64_dec(v) atomic64_sub(1LL, (v)) -+#define atomic64_dec_unchecked(v) atomic64_sub_unchecked(1LL, (v)) - #define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) - #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) -diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h -index 75fe66b..2255c86 100644 ---- a/arch/arm/include/asm/cache.h -+++ b/arch/arm/include/asm/cache.h -@@ -4,8 +4,10 @@ - #ifndef __ASMARM_CACHE_H - #define __ASMARM_CACHE_H - -+#include -+ - #define L1_CACHE_SHIFT CONFIG_ARM_L1_CACHE_SHIFT --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - /* - * Memory returned by kmalloc() may be used for DMA, so we must make -diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h -index e4448e1..7bc86b7 100644 ---- a/arch/arm/include/asm/cacheflush.h -+++ b/arch/arm/include/asm/cacheflush.h -@@ -108,7 +108,7 @@ struct cpu_cache_fns { - void (*dma_unmap_area)(const void *, size_t, int); - - void (*dma_flush_range)(const void *, const void *); --}; -+} __no_const; - - /* - * Select the calling method -diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h -index 7eb18c1..e38b6d2 100644 ---- a/arch/arm/include/asm/cmpxchg.h -+++ b/arch/arm/include/asm/cmpxchg.h -@@ -102,6 +102,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size - - #define xchg(ptr,x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) -+#define xchg_unchecked(ptr,x) \ -+ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - - #include - -diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h -index 38050b1..9d90e8b 100644 ---- a/arch/arm/include/asm/elf.h -+++ b/arch/arm/include/asm/elf.h -@@ -116,7 +116,14 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); - the loader. We need to make sure that it is out of the way of the program - that it will "exec", and that there is sufficient room for the brk. */ - --#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) -+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) -+ -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE 0x00008000UL -+ -+#define PAX_DELTA_MMAP_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) -+#define PAX_DELTA_STACK_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) -+#endif - - /* When the program starts, a1 contains a pointer to a function to be - registered with atexit, as per the SVR4 ABI. A value of 0 means we -@@ -126,8 +133,4 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); - extern void elf_set_personality(const struct elf32_hdr *); - #define SET_PERSONALITY(ex) elf_set_personality(&(ex)) - --struct mm_struct; --extern unsigned long arch_randomize_brk(struct mm_struct *mm); --#define arch_randomize_brk arch_randomize_brk -- - #endif -diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h -index 83eb2f7..ed77159 100644 ---- a/arch/arm/include/asm/kmap_types.h -+++ b/arch/arm/include/asm/kmap_types.h -@@ -4,6 +4,6 @@ - /* - * This is the "bare minimum". AIO seems to require this. - */ --#define KM_TYPE_NR 16 -+#define KM_TYPE_NR 17 - - #endif -diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h -index 53426c6..c7baff3 100644 ---- a/arch/arm/include/asm/outercache.h -+++ b/arch/arm/include/asm/outercache.h -@@ -35,7 +35,7 @@ struct outer_cache_fns { - #endif - void (*set_debug)(unsigned long); - void (*resume)(void); --}; -+} __no_const; - - #ifdef CONFIG_OUTER_CACHE - -diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h -index ecf9019..b71d9a1 100644 ---- a/arch/arm/include/asm/page.h -+++ b/arch/arm/include/asm/page.h -@@ -114,7 +114,7 @@ struct cpu_user_fns { - void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr); - void (*cpu_copy_user_highpage)(struct page *to, struct page *from, - unsigned long vaddr, struct vm_area_struct *vma); --}; -+} __no_const; - - #ifdef MULTI_USER - extern struct cpu_user_fns cpu_user; -diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h -index 943504f..bf8d667 100644 ---- a/arch/arm/include/asm/pgalloc.h -+++ b/arch/arm/include/asm/pgalloc.h -@@ -43,6 +43,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE)); - } - -+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -+{ -+ pud_populate(mm, pud, pmd); -+} -+ - #else /* !CONFIG_ARM_LPAE */ - - /* -@@ -51,6 +56,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) - #define pmd_free(mm, pmd) do { } while (0) - #define pud_populate(mm,pmd,pte) BUG() -+#define pud_populate_kernel(mm,pmd,pte) BUG() - - #endif /* CONFIG_ARM_LPAE */ - -diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h -index af7b0bd..6750a8c 100644 ---- a/arch/arm/include/asm/thread_info.h -+++ b/arch/arm/include/asm/thread_info.h -@@ -148,6 +148,12 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, - #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ - #define TIF_SYSCALL_TRACE 8 - #define TIF_SYSCALL_AUDIT 9 -+ -+/* within 8 bits of TIF_SYSCALL_TRACE -+ to meet flexible second operand requirements -+*/ -+#define TIF_GRSEC_SETXID 10 -+ - #define TIF_POLLING_NRFLAG 16 - #define TIF_USING_IWMMXT 17 - #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ -@@ -163,9 +169,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, - #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) - #define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT) - #define _TIF_SECCOMP (1 << TIF_SECCOMP) -+#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID) - - /* Checks for any syscall work in entry-common.S */ --#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT) -+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ -+ _TIF_GRSEC_SETXID) - - /* - * Change these and you break ASM code in entry-common.S -diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h -index 77bd79f..ad4cd27 100644 ---- a/arch/arm/include/asm/uaccess.h -+++ b/arch/arm/include/asm/uaccess.h -@@ -22,6 +22,8 @@ - #define VERIFY_READ 0 - #define VERIFY_WRITE 1 - -+extern void check_object_size(const void *ptr, unsigned long n, bool to); -+ - /* - * The exception table consists of pairs of addresses: the first is the - * address of an instruction that is allowed to fault, and the second is -@@ -418,8 +420,23 @@ do { \ - - - #ifdef CONFIG_MMU --extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n); --extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n); -+extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n); -+extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n); -+ -+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n) -+{ -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); -+ return ___copy_from_user(to, from, n); -+} -+ -+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n) -+{ -+ if (!__builtin_constant_p(n)) -+ check_object_size(from, n, true); -+ return ___copy_to_user(to, from, n); -+} -+ - extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n); - extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n); - extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n); -@@ -431,6 +448,9 @@ extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned l - - static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - if (access_ok(VERIFY_READ, from, n)) - n = __copy_from_user(to, from, n); - else /* security hole - plug it */ -@@ -440,6 +460,9 @@ static inline unsigned long __must_check copy_from_user(void *to, const void __u - - static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - if (access_ok(VERIFY_WRITE, to, n)) - n = __copy_to_user(to, from, n); - return n; -diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c -index 60d3b73..9168db0 100644 ---- a/arch/arm/kernel/armksyms.c -+++ b/arch/arm/kernel/armksyms.c -@@ -89,8 +89,8 @@ EXPORT_SYMBOL(__memzero); - #ifdef CONFIG_MMU - EXPORT_SYMBOL(copy_page); - --EXPORT_SYMBOL(__copy_from_user); --EXPORT_SYMBOL(__copy_to_user); -+EXPORT_SYMBOL(___copy_from_user); -+EXPORT_SYMBOL(___copy_to_user); - EXPORT_SYMBOL(__clear_user); - - EXPORT_SYMBOL(__get_user_1); -diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c -index 693b744..e684262 100644 ---- a/arch/arm/kernel/process.c -+++ b/arch/arm/kernel/process.c -@@ -28,7 +28,6 @@ - #include - #include - #include --#include - #include - #include - -@@ -256,9 +255,10 @@ void machine_power_off(void) - machine_shutdown(); - if (pm_power_off) - pm_power_off(); -+ BUG(); - } - --void machine_restart(char *cmd) -+__noreturn void machine_restart(char *cmd) - { - machine_shutdown(); - -@@ -501,12 +501,6 @@ unsigned long get_wchan(struct task_struct *p) - return 0; - } - --unsigned long arch_randomize_brk(struct mm_struct *mm) --{ -- unsigned long range_end = mm->brk + 0x02000000; -- return randomize_range(mm->brk, range_end, 0) ? : mm->brk; --} -- - #ifdef CONFIG_MMU - /* - * The vectors page is always readable from user space for the -diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c -index 3e0fc5f..a42d2ec 100644 ---- a/arch/arm/kernel/ptrace.c -+++ b/arch/arm/kernel/ptrace.c -@@ -913,11 +913,20 @@ enum ptrace_syscall_dir { - PTRACE_SYSCALL_EXIT, - }; - -+#ifdef CONFIG_GRKERNSEC_SETXID -+extern void gr_delayed_cred_worker(void); -+#endif -+ - static int ptrace_syscall_trace(struct pt_regs *regs, int scno, - enum ptrace_syscall_dir dir) - { - unsigned long ip; - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return scno; - -diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c -index a81dcec..ac42f0f 100644 ---- a/arch/arm/kernel/setup.c -+++ b/arch/arm/kernel/setup.c -@@ -112,13 +112,13 @@ struct processor processor __read_mostly; - struct cpu_tlb_fns cpu_tlb __read_mostly; - #endif - #ifdef MULTI_USER --struct cpu_user_fns cpu_user __read_mostly; -+struct cpu_user_fns cpu_user __read_only; - #endif - #ifdef MULTI_CACHE --struct cpu_cache_fns cpu_cache __read_mostly; -+struct cpu_cache_fns cpu_cache __read_only; - #endif - #ifdef CONFIG_OUTER_CACHE --struct outer_cache_fns outer_cache __read_mostly; -+struct outer_cache_fns outer_cache __read_only; - EXPORT_SYMBOL(outer_cache); - #endif - -diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c -index b0179b8..b54c6c1 100644 ---- a/arch/arm/kernel/traps.c -+++ b/arch/arm/kernel/traps.c -@@ -266,6 +266,8 @@ static arch_spinlock_t die_lock = __ARCH_SPIN_LOCK_UNLOCKED; - static int die_owner = -1; - static unsigned int die_nest_count; - -+extern void gr_handle_kernel_exploit(void); -+ - static unsigned long oops_begin(void) - { - int cpu; -@@ -308,6 +310,9 @@ static void oops_end(unsigned long flags, struct pt_regs *regs, int signr) - panic("Fatal exception in interrupt"); - if (panic_on_oops) - panic("Fatal exception"); -+ -+ gr_handle_kernel_exploit(); -+ - if (signr) - do_exit(signr); - } -diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S -index 66a477a..bee61d3 100644 ---- a/arch/arm/lib/copy_from_user.S -+++ b/arch/arm/lib/copy_from_user.S -@@ -16,7 +16,7 @@ - /* - * Prototype: - * -- * size_t __copy_from_user(void *to, const void *from, size_t n) -+ * size_t ___copy_from_user(void *to, const void *from, size_t n) - * - * Purpose: - * -@@ -84,11 +84,11 @@ - - .text - --ENTRY(__copy_from_user) -+ENTRY(___copy_from_user) - - #include "copy_template.S" - --ENDPROC(__copy_from_user) -+ENDPROC(___copy_from_user) - - .pushsection .fixup,"ax" - .align 0 -diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S -index 6ee2f67..d1cce76 100644 ---- a/arch/arm/lib/copy_page.S -+++ b/arch/arm/lib/copy_page.S -@@ -10,6 +10,7 @@ - * ASM optimised string functions - */ - #include -+#include - #include - #include - #include -diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S -index d066df6..df28194 100644 ---- a/arch/arm/lib/copy_to_user.S -+++ b/arch/arm/lib/copy_to_user.S -@@ -16,7 +16,7 @@ - /* - * Prototype: - * -- * size_t __copy_to_user(void *to, const void *from, size_t n) -+ * size_t ___copy_to_user(void *to, const void *from, size_t n) - * - * Purpose: - * -@@ -88,11 +88,11 @@ - .text - - ENTRY(__copy_to_user_std) --WEAK(__copy_to_user) -+WEAK(___copy_to_user) - - #include "copy_template.S" - --ENDPROC(__copy_to_user) -+ENDPROC(___copy_to_user) - ENDPROC(__copy_to_user_std) - - .pushsection .fixup,"ax" -diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c -index 025f742..8432b08 100644 ---- a/arch/arm/lib/uaccess_with_memcpy.c -+++ b/arch/arm/lib/uaccess_with_memcpy.c -@@ -104,7 +104,7 @@ out: - } - - unsigned long --__copy_to_user(void __user *to, const void *from, unsigned long n) -+___copy_to_user(void __user *to, const void *from, unsigned long n) - { - /* - * This test is stubbed out of the main function above to keep -diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c -index 1201191..eabbb2c 100644 ---- a/arch/arm/mach-kirkwood/common.c -+++ b/arch/arm/mach-kirkwood/common.c -@@ -160,7 +160,7 @@ static void clk_gate_fn_disable(struct clk_hw *hw) - clk_gate_ops.disable(hw); - } - --static struct clk_ops clk_gate_fn_ops; -+static clk_ops_no_const clk_gate_fn_ops; - - static struct clk __init *clk_register_gate_fn(struct device *dev, - const char *name, -diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c -index 677357f..8828dda 100644 ---- a/arch/arm/mach-omap2/board-n8x0.c -+++ b/arch/arm/mach-omap2/board-n8x0.c -@@ -593,7 +593,7 @@ static int n8x0_menelaus_late_init(struct device *dev) - } - #endif - --static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = { -+static struct menelaus_platform_data n8x0_menelaus_platform_data __initconst = { - .late_init = n8x0_menelaus_late_init, - }; - -diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c -index 37afbd1..c22ad7c 100644 ---- a/arch/arm/mach-omap2/omap_hwmod.c -+++ b/arch/arm/mach-omap2/omap_hwmod.c -@@ -187,10 +187,10 @@ struct omap_hwmod_soc_ops { - int (*is_hardreset_asserted)(struct omap_hwmod *oh, - struct omap_hwmod_rst_info *ohri); - int (*init_clkdm)(struct omap_hwmod *oh); --}; -+} __no_const; - - /* soc_ops: adapts the omap_hwmod code to the currently-booted SoC */ --static struct omap_hwmod_soc_ops soc_ops; -+static struct omap_hwmod_soc_ops soc_ops __read_only; - - /* omap_hwmod_list contains all registered struct omap_hwmods */ - static LIST_HEAD(omap_hwmod_list); -diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c -index c3bd834..e81ef02 100644 ---- a/arch/arm/mm/fault.c -+++ b/arch/arm/mm/fault.c -@@ -174,6 +174,13 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, - } - #endif - -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (fsr & FSR_LNX_PF) { -+ pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - tsk->thread.address = addr; - tsk->thread.error_code = fsr; - tsk->thread.trap_no = 14; -@@ -397,6 +404,33 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) - } - #endif /* CONFIG_MMU */ - -+#ifdef CONFIG_PAX_PAGEEXEC -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 20; i++) { -+ unsigned char c; -+ if (get_user(c, (__force unsigned char __user *)pc+i)) -+ printk(KERN_CONT "?? "); -+ else -+ printk(KERN_CONT "%02x ", c); -+ } -+ printk("\n"); -+ -+ printk(KERN_ERR "PAX: bytes at SP-4: "); -+ for (i = -1; i < 20; i++) { -+ unsigned long c; -+ if (get_user(c, (__force unsigned long __user *)sp+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08lx ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - /* - * First Level Translation Fault Handler - * -@@ -574,6 +608,20 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs) - const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr); - struct siginfo info; - -+#ifdef CONFIG_PAX_REFCOUNT -+ if (fsr_fs(ifsr) == 2) { -+ unsigned int bkpt; -+ -+ if (!probe_kernel_address((unsigned int *)addr, bkpt) && bkpt == 0xe12f1073) { -+ current->thread.error_code = ifsr; -+ current->thread.trap_no = 0; -+ pax_report_refcount_overflow(regs); -+ fixup_exception(regs); -+ return; -+ } -+ } -+#endif -+ - if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs)) - return; - -diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c -index ce8cb19..3ec539d 100644 ---- a/arch/arm/mm/mmap.c -+++ b/arch/arm/mm/mmap.c -@@ -93,6 +93,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, - if (len > TASK_SIZE) - return -ENOMEM; - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - if (addr) { - if (do_align) - addr = COLOUR_ALIGN(addr, pgoff); -@@ -100,15 +104,14 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - if (len > mm->cached_hole_size) { -- start_addr = addr = mm->free_area_cache; -+ start_addr = addr = mm->free_area_cache; - } else { -- start_addr = addr = mm->mmap_base; -- mm->cached_hole_size = 0; -+ start_addr = addr = mm->mmap_base; -+ mm->cached_hole_size = 0; - } - - full_search: -@@ -124,14 +127,14 @@ full_search: - * Start a new search - just in case we missed - * some holes. - */ -- if (start_addr != TASK_UNMAPPED_BASE) { -- start_addr = addr = TASK_UNMAPPED_BASE; -+ if (start_addr != mm->mmap_base) { -+ start_addr = addr = mm->mmap_base; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } -- if (!vma || addr + len <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* - * Remember the place where we stopped the search: - */ -@@ -266,10 +269,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - - if (mmap_is_legacy()) { - mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { - mm->mmap_base = mmap_base(random_factor); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -diff --git a/arch/arm/plat-orion/include/plat/addr-map.h b/arch/arm/plat-orion/include/plat/addr-map.h -index fd556f7..af2e7d2 100644 ---- a/arch/arm/plat-orion/include/plat/addr-map.h -+++ b/arch/arm/plat-orion/include/plat/addr-map.h -@@ -26,7 +26,7 @@ struct orion_addr_map_cfg { - value in bridge_virt_base */ - void __iomem *(*win_cfg_base) (const struct orion_addr_map_cfg *cfg, - const int win); --}; -+} __no_const; - - /* - * Information needed to setup one address mapping. -diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h -index f5144cd..71f6d1f 100644 ---- a/arch/arm/plat-samsung/include/plat/dma-ops.h -+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h -@@ -47,7 +47,7 @@ struct samsung_dma_ops { - int (*started)(unsigned ch); - int (*flush)(unsigned ch); - int (*stop)(unsigned ch); --}; -+} __no_const; - - extern void *samsung_dmadev_get_ops(void); - extern void *s3c_dma_get_ops(void); -diff --git a/arch/arm/plat-samsung/include/plat/ehci.h b/arch/arm/plat-samsung/include/plat/ehci.h -index 5f28cae..3d23723 100644 ---- a/arch/arm/plat-samsung/include/plat/ehci.h -+++ b/arch/arm/plat-samsung/include/plat/ehci.h -@@ -14,7 +14,7 @@ - struct s5p_ehci_platdata { - int (*phy_init)(struct platform_device *pdev, int type); - int (*phy_exit)(struct platform_device *pdev, int type); --}; -+} __no_const; - - extern void s5p_ehci_set_platdata(struct s5p_ehci_platdata *pd); - -diff --git a/arch/avr32/include/asm/cache.h b/arch/avr32/include/asm/cache.h -index c3a58a1..78fbf54 100644 ---- a/arch/avr32/include/asm/cache.h -+++ b/arch/avr32/include/asm/cache.h -@@ -1,8 +1,10 @@ - #ifndef __ASM_AVR32_CACHE_H - #define __ASM_AVR32_CACHE_H - -+#include -+ - #define L1_CACHE_SHIFT 5 --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - /* - * Memory returned by kmalloc() may be used for DMA, so we must make -diff --git a/arch/avr32/include/asm/elf.h b/arch/avr32/include/asm/elf.h -index 3b3159b..425ea94 100644 ---- a/arch/avr32/include/asm/elf.h -+++ b/arch/avr32/include/asm/elf.h -@@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpregset_t; - the loader. We need to make sure that it is out of the way of the program - that it will "exec", and that there is sufficient room for the brk. */ - --#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) -+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE 0x00001000UL -+ -+#define PAX_DELTA_MMAP_LEN 15 -+#define PAX_DELTA_STACK_LEN 15 -+#endif - - /* This yields a mask that user programs can use to figure out what - instruction set this CPU supports. This could be done in user space, -diff --git a/arch/avr32/include/asm/kmap_types.h b/arch/avr32/include/asm/kmap_types.h -index 479330b..53717a8 100644 ---- a/arch/avr32/include/asm/kmap_types.h -+++ b/arch/avr32/include/asm/kmap_types.h -@@ -2,9 +2,9 @@ - #define __ASM_AVR32_KMAP_TYPES_H - - #ifdef CONFIG_DEBUG_HIGHMEM --# define KM_TYPE_NR 29 -+# define KM_TYPE_NR 30 - #else --# define KM_TYPE_NR 14 -+# define KM_TYPE_NR 15 - #endif - - #endif /* __ASM_AVR32_KMAP_TYPES_H */ -diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c -index b92e609..b69c101 100644 ---- a/arch/avr32/mm/fault.c -+++ b/arch/avr32/mm/fault.c -@@ -41,6 +41,23 @@ static inline int notify_page_fault(struct pt_regs *regs, int trap) - - int exception_trace = 1; - -+#ifdef CONFIG_PAX_PAGEEXEC -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 20; i++) { -+ unsigned char c; -+ if (get_user(c, (unsigned char *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%02x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - /* - * This routine handles page faults. It determines the address and the - * problem, and then passes it off to one of the appropriate routines. -@@ -173,6 +190,16 @@ bad_area: - up_read(&mm->mmap_sem); - - if (user_mode(regs)) { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (mm->pax_flags & MF_PAX_PAGEEXEC) { -+ if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) { -+ pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp); -+ do_group_exit(SIGKILL); -+ } -+ } -+#endif -+ - if (exception_trace && printk_ratelimit()) - printk("%s%s[%d]: segfault at %08lx pc %08lx " - "sp %08lx ecr %lu\n", -diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h -index 568885a..f8008df 100644 ---- a/arch/blackfin/include/asm/cache.h -+++ b/arch/blackfin/include/asm/cache.h -@@ -7,6 +7,7 @@ - #ifndef __ARCH_BLACKFIN_CACHE_H - #define __ARCH_BLACKFIN_CACHE_H - -+#include - #include /* for asmlinkage */ - - /* -@@ -14,7 +15,7 @@ - * Blackfin loads 32 bytes for cache - */ - #define L1_CACHE_SHIFT 5 --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - #define SMP_CACHE_BYTES L1_CACHE_BYTES - - #define ARCH_DMA_MINALIGN L1_CACHE_BYTES -diff --git a/arch/cris/include/arch-v10/arch/cache.h b/arch/cris/include/arch-v10/arch/cache.h -index aea2718..3639a60 100644 ---- a/arch/cris/include/arch-v10/arch/cache.h -+++ b/arch/cris/include/arch-v10/arch/cache.h -@@ -1,8 +1,9 @@ - #ifndef _ASM_ARCH_CACHE_H - #define _ASM_ARCH_CACHE_H - -+#include - /* Etrax 100LX have 32-byte cache-lines. */ --#define L1_CACHE_BYTES 32 - #define L1_CACHE_SHIFT 5 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #endif /* _ASM_ARCH_CACHE_H */ -diff --git a/arch/cris/include/arch-v32/arch/cache.h b/arch/cris/include/arch-v32/arch/cache.h -index 7caf25d..ee65ac5 100644 ---- a/arch/cris/include/arch-v32/arch/cache.h -+++ b/arch/cris/include/arch-v32/arch/cache.h -@@ -1,11 +1,12 @@ - #ifndef _ASM_CRIS_ARCH_CACHE_H - #define _ASM_CRIS_ARCH_CACHE_H - -+#include - #include - - /* A cache-line is 32 bytes. */ --#define L1_CACHE_BYTES 32 - #define L1_CACHE_SHIFT 5 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define __read_mostly __attribute__((__section__(".data..read_mostly"))) - -diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h -index b86329d..6709906 100644 ---- a/arch/frv/include/asm/atomic.h -+++ b/arch/frv/include/asm/atomic.h -@@ -186,6 +186,16 @@ static inline void atomic64_dec(atomic64_t *v) - #define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter)) - #define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter)) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u) - { - int c, old; -diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h -index 2797163..c2a401d 100644 ---- a/arch/frv/include/asm/cache.h -+++ b/arch/frv/include/asm/cache.h -@@ -12,10 +12,11 @@ - #ifndef __ASM_CACHE_H - #define __ASM_CACHE_H - -+#include - - /* bytes per L1 cache line */ - #define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT) --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) - #define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) -diff --git a/arch/frv/include/asm/kmap_types.h b/arch/frv/include/asm/kmap_types.h -index 43901f2..0d8b865 100644 ---- a/arch/frv/include/asm/kmap_types.h -+++ b/arch/frv/include/asm/kmap_types.h -@@ -2,6 +2,6 @@ - #ifndef _ASM_KMAP_TYPES_H - #define _ASM_KMAP_TYPES_H - --#define KM_TYPE_NR 17 -+#define KM_TYPE_NR 18 - - #endif -diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c -index 385fd30..6c3d97e 100644 ---- a/arch/frv/mm/elf-fdpic.c -+++ b/arch/frv/mm/elf-fdpic.c -@@ -73,8 +73,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - if (addr) { - addr = PAGE_ALIGN(addr); - vma = find_vma(current->mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) - goto success; - } - -@@ -89,7 +88,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - for (; vma; vma = vma->vm_next) { - if (addr > limit) - break; -- if (addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - goto success; - addr = vma->vm_end; - } -@@ -104,7 +103,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - for (; vma; vma = vma->vm_next) { - if (addr > limit) - break; -- if (addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - goto success; - addr = vma->vm_end; - } -diff --git a/arch/h8300/include/asm/cache.h b/arch/h8300/include/asm/cache.h -index c635028..6d9445a 100644 ---- a/arch/h8300/include/asm/cache.h -+++ b/arch/h8300/include/asm/cache.h -@@ -1,8 +1,10 @@ - #ifndef __ARCH_H8300_CACHE_H - #define __ARCH_H8300_CACHE_H - -+#include -+ - /* bytes per L1 cache line */ --#define L1_CACHE_BYTES 4 -+#define L1_CACHE_BYTES _AC(4,UL) - - /* m68k-elf-gcc 2.95.2 doesn't like these */ - -diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h -index 0f01de2..d37d309 100644 ---- a/arch/hexagon/include/asm/cache.h -+++ b/arch/hexagon/include/asm/cache.h -@@ -21,9 +21,11 @@ - #ifndef __ASM_CACHE_H - #define __ASM_CACHE_H - -+#include -+ - /* Bytes per L1 cache line */ --#define L1_CACHE_SHIFT (5) --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_SHIFT 5 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define __cacheline_aligned __aligned(L1_CACHE_BYTES) - #define ____cacheline_aligned __aligned(L1_CACHE_BYTES) -diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h -index 6e6fe18..a6ae668 100644 ---- a/arch/ia64/include/asm/atomic.h -+++ b/arch/ia64/include/asm/atomic.h -@@ -208,6 +208,16 @@ atomic64_add_negative (__s64 i, atomic64_t *v) - #define atomic64_inc(v) atomic64_add(1, (v)) - #define atomic64_dec(v) atomic64_sub(1, (v)) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - /* Atomic operations are already serializing */ - #define smp_mb__before_atomic_dec() barrier() - #define smp_mb__after_atomic_dec() barrier() -diff --git a/arch/ia64/include/asm/cache.h b/arch/ia64/include/asm/cache.h -index 988254a..e1ee885 100644 ---- a/arch/ia64/include/asm/cache.h -+++ b/arch/ia64/include/asm/cache.h -@@ -1,6 +1,7 @@ - #ifndef _ASM_IA64_CACHE_H - #define _ASM_IA64_CACHE_H - -+#include - - /* - * Copyright (C) 1998-2000 Hewlett-Packard Co -@@ -9,7 +10,7 @@ - - /* Bytes per L1 (data) cache line. */ - #define L1_CACHE_SHIFT CONFIG_IA64_L1_CACHE_SHIFT --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #ifdef CONFIG_SMP - # define SMP_CACHE_SHIFT L1_CACHE_SHIFT -diff --git a/arch/ia64/include/asm/elf.h b/arch/ia64/include/asm/elf.h -index b5298eb..67c6e62 100644 ---- a/arch/ia64/include/asm/elf.h -+++ b/arch/ia64/include/asm/elf.h -@@ -42,6 +42,13 @@ - */ - #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL) -+ -+#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) -+#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) -+#endif -+ - #define PT_IA_64_UNWIND 0x70000001 - - /* IA-64 relocations: */ -diff --git a/arch/ia64/include/asm/pgalloc.h b/arch/ia64/include/asm/pgalloc.h -index 96a8d92..617a1cf 100644 ---- a/arch/ia64/include/asm/pgalloc.h -+++ b/arch/ia64/include/asm/pgalloc.h -@@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) - pgd_val(*pgd_entry) = __pa(pud); - } - -+static inline void -+pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) -+{ -+ pgd_populate(mm, pgd_entry, pud); -+} -+ - static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) - { - return quicklist_alloc(0, GFP_KERNEL, NULL); -@@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) - pud_val(*pud_entry) = __pa(pmd); - } - -+static inline void -+pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) -+{ -+ pud_populate(mm, pud_entry, pmd); -+} -+ - static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) - { - return quicklist_alloc(0, GFP_KERNEL, NULL); -diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h -index 815810c..d60bd4c 100644 ---- a/arch/ia64/include/asm/pgtable.h -+++ b/arch/ia64/include/asm/pgtable.h -@@ -12,7 +12,7 @@ - * David Mosberger-Tang - */ - -- -+#include - #include - #include - #include -@@ -142,6 +142,17 @@ - #define PAGE_READONLY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) - #define PAGE_COPY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) - #define PAGE_COPY_EXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX) -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+# define PAGE_SHARED_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW) -+# define PAGE_READONLY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) -+# define PAGE_COPY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) -+#else -+# define PAGE_SHARED_NOEXEC PAGE_SHARED -+# define PAGE_READONLY_NOEXEC PAGE_READONLY -+# define PAGE_COPY_NOEXEC PAGE_COPY -+#endif -+ - #define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX) - #define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX) - #define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX) -diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h -index 54ff557..70c88b7 100644 ---- a/arch/ia64/include/asm/spinlock.h -+++ b/arch/ia64/include/asm/spinlock.h -@@ -71,7 +71,7 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) - unsigned short *p = (unsigned short *)&lock->lock + 1, tmp; - - asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p)); -- ACCESS_ONCE(*p) = (tmp + 2) & ~1; -+ ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1; - } - - static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock) -diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h -index 449c8c0..432a3d2 100644 ---- a/arch/ia64/include/asm/uaccess.h -+++ b/arch/ia64/include/asm/uaccess.h -@@ -257,7 +257,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) - const void *__cu_from = (from); \ - long __cu_len = (n); \ - \ -- if (__access_ok(__cu_to, __cu_len, get_fs())) \ -+ if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) \ - __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ - __cu_len; \ - }) -@@ -269,7 +269,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) - long __cu_len = (n); \ - \ - __chk_user_ptr(__cu_from); \ -- if (__access_ok(__cu_from, __cu_len, get_fs())) \ -+ if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_from, __cu_len, get_fs())) \ - __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ - __cu_len; \ - }) -diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c -index 24603be..948052d 100644 ---- a/arch/ia64/kernel/module.c -+++ b/arch/ia64/kernel/module.c -@@ -307,8 +307,7 @@ plt_target (struct plt_entry *plt) - void - module_free (struct module *mod, void *module_region) - { -- if (mod && mod->arch.init_unw_table && -- module_region == mod->module_init) { -+ if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) { - unw_remove_unwind_table(mod->arch.init_unw_table); - mod->arch.init_unw_table = NULL; - } -@@ -494,15 +493,39 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings, - } - - static inline int -+in_init_rx (const struct module *mod, uint64_t addr) -+{ -+ return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx; -+} -+ -+static inline int -+in_init_rw (const struct module *mod, uint64_t addr) -+{ -+ return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw; -+} -+ -+static inline int - in_init (const struct module *mod, uint64_t addr) - { -- return addr - (uint64_t) mod->module_init < mod->init_size; -+ return in_init_rx(mod, addr) || in_init_rw(mod, addr); -+} -+ -+static inline int -+in_core_rx (const struct module *mod, uint64_t addr) -+{ -+ return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx; -+} -+ -+static inline int -+in_core_rw (const struct module *mod, uint64_t addr) -+{ -+ return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw; - } - - static inline int - in_core (const struct module *mod, uint64_t addr) - { -- return addr - (uint64_t) mod->module_core < mod->core_size; -+ return in_core_rx(mod, addr) || in_core_rw(mod, addr); - } - - static inline int -@@ -685,7 +708,14 @@ do_reloc (struct module *mod, uint8_t r_type, Elf64_Sym *sym, uint64_t addend, - break; - - case RV_BDREL: -- val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core); -+ if (in_init_rx(mod, val)) -+ val -= (uint64_t) mod->module_init_rx; -+ else if (in_init_rw(mod, val)) -+ val -= (uint64_t) mod->module_init_rw; -+ else if (in_core_rx(mod, val)) -+ val -= (uint64_t) mod->module_core_rx; -+ else if (in_core_rw(mod, val)) -+ val -= (uint64_t) mod->module_core_rw; - break; - - case RV_LTV: -@@ -820,15 +850,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind - * addresses have been selected... - */ - uint64_t gp; -- if (mod->core_size > MAX_LTOFF) -+ if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF) - /* - * This takes advantage of fact that SHF_ARCH_SMALL gets allocated - * at the end of the module. - */ -- gp = mod->core_size - MAX_LTOFF / 2; -+ gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2; - else -- gp = mod->core_size / 2; -- gp = (uint64_t) mod->module_core + ((gp + 7) & -8); -+ gp = (mod->core_size_rx + mod->core_size_rw) / 2; -+ gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8); - mod->arch.gp = gp; - DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp); - } -diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c -index d9439ef..b9a4303 100644 ---- a/arch/ia64/kernel/sys_ia64.c -+++ b/arch/ia64/kernel/sys_ia64.c -@@ -43,6 +43,13 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len - if (REGION_NUMBER(addr) == RGN_HPAGE) - addr = 0; - #endif -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ addr = mm->free_area_cache; -+ else -+#endif -+ - if (!addr) - addr = mm->free_area_cache; - -@@ -61,14 +68,14 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) { -- if (start_addr != TASK_UNMAPPED_BASE) { -+ if (start_addr != mm->mmap_base) { - /* Start a new search --- just in case we missed some holes. */ -- addr = TASK_UNMAPPED_BASE; -+ addr = mm->mmap_base; - goto full_search; - } - return -ENOMEM; - } -- if (!vma || addr + len <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* Remember the address where we stopped this search: */ - mm->free_area_cache = addr + len; - return addr; -diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S -index 0ccb28f..8992469 100644 ---- a/arch/ia64/kernel/vmlinux.lds.S -+++ b/arch/ia64/kernel/vmlinux.lds.S -@@ -198,7 +198,7 @@ SECTIONS { - /* Per-cpu data: */ - . = ALIGN(PERCPU_PAGE_SIZE); - PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu) -- __phys_per_cpu_start = __per_cpu_load; -+ __phys_per_cpu_start = per_cpu_load; - /* - * ensure percpu data fits - * into percpu page size -diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c -index 8443daf..0a01e30 100644 ---- a/arch/ia64/mm/fault.c -+++ b/arch/ia64/mm/fault.c -@@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned long address) - return pte_present(pte); - } - -+#ifdef CONFIG_PAX_PAGEEXEC -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 8; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - # define VM_READ_BIT 0 - # define VM_WRITE_BIT 1 - # define VM_EXEC_BIT 2 -@@ -149,8 +166,21 @@ retry: - if (((isr >> IA64_ISR_R_BIT) & 1UL) && (!(vma->vm_flags & (VM_READ | VM_WRITE)))) - goto bad_area; - -- if ((vma->vm_flags & mask) != mask) -+ if ((vma->vm_flags & mask) != mask) { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) { -+ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip) -+ goto bad_area; -+ -+ up_read(&mm->mmap_sem); -+ pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - goto bad_area; -+ } - - /* - * If for any reason at all we couldn't handle the fault, make -diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c -index 5ca674b..e0e1b70 100644 ---- a/arch/ia64/mm/hugetlbpage.c -+++ b/arch/ia64/mm/hugetlbpage.c -@@ -171,7 +171,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u - /* At this point: (!vmm || addr < vmm->vm_end). */ - if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT) - return -ENOMEM; -- if (!vmm || (addr + len) <= vmm->vm_start) -+ if (check_heap_stack_gap(vmm, addr, len)) - return addr; - addr = ALIGN(vmm->vm_end, HPAGE_SIZE); - } -diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c -index 0eab454..bd794f2 100644 ---- a/arch/ia64/mm/init.c -+++ b/arch/ia64/mm/init.c -@@ -120,6 +120,19 @@ ia64_init_addr_space (void) - vma->vm_start = current->thread.rbs_bot & PAGE_MASK; - vma->vm_end = vma->vm_start + PAGE_SIZE; - vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT; -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (current->mm->pax_flags & MF_PAX_PAGEEXEC) { -+ vma->vm_flags &= ~VM_EXEC; -+ -+#ifdef CONFIG_PAX_MPROTECT -+ if (current->mm->pax_flags & MF_PAX_MPROTECT) -+ vma->vm_flags &= ~VM_MAYEXEC; -+#endif -+ -+ } -+#endif -+ - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); - down_write(¤t->mm->mmap_sem); - if (insert_vm_struct(current->mm, vma)) { -diff --git a/arch/m32r/include/asm/cache.h b/arch/m32r/include/asm/cache.h -index 40b3ee9..8c2c112 100644 ---- a/arch/m32r/include/asm/cache.h -+++ b/arch/m32r/include/asm/cache.h -@@ -1,8 +1,10 @@ - #ifndef _ASM_M32R_CACHE_H - #define _ASM_M32R_CACHE_H - -+#include -+ - /* L1 cache line size */ - #define L1_CACHE_SHIFT 4 --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #endif /* _ASM_M32R_CACHE_H */ -diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c -index 82abd15..d95ae5d 100644 ---- a/arch/m32r/lib/usercopy.c -+++ b/arch/m32r/lib/usercopy.c -@@ -14,6 +14,9 @@ - unsigned long - __generic_copy_to_user(void __user *to, const void *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - prefetch(from); - if (access_ok(VERIFY_WRITE, to, n)) - __copy_user(to,from,n); -@@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, const void *from, unsigned long n) - unsigned long - __generic_copy_from_user(void *to, const void __user *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - prefetchw(to); - if (access_ok(VERIFY_READ, from, n)) - __copy_user_zeroing(to,from,n); -diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h -index 0395c51..5f26031 100644 ---- a/arch/m68k/include/asm/cache.h -+++ b/arch/m68k/include/asm/cache.h -@@ -4,9 +4,11 @@ - #ifndef __ARCH_M68K_CACHE_H - #define __ARCH_M68K_CACHE_H - -+#include -+ - /* bytes per L1 cache line */ - #define L1_CACHE_SHIFT 4 --#define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define ARCH_DMA_MINALIGN L1_CACHE_BYTES - -diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h -index 4efe96a..60e8699 100644 ---- a/arch/microblaze/include/asm/cache.h -+++ b/arch/microblaze/include/asm/cache.h -@@ -13,11 +13,12 @@ - #ifndef _ASM_MICROBLAZE_CACHE_H - #define _ASM_MICROBLAZE_CACHE_H - -+#include - #include - - #define L1_CACHE_SHIFT 5 - /* word-granular cache in microblaze */ --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define SMP_CACHE_BYTES L1_CACHE_BYTES - -diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h -index 3f4c5cb..3439c6e 100644 ---- a/arch/mips/include/asm/atomic.h -+++ b/arch/mips/include/asm/atomic.h -@@ -21,6 +21,10 @@ - #include - #include - -+#ifdef CONFIG_GENERIC_ATOMIC64 -+#include -+#endif -+ - #define ATOMIC_INIT(i) { (i) } - - /* -@@ -765,6 +769,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) - */ - #define atomic64_add_negative(i, v) (atomic64_add_return(i, (v)) < 0) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - #endif /* CONFIG_64BIT */ - - /* -diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h -index b4db69f..8f3b093 100644 ---- a/arch/mips/include/asm/cache.h -+++ b/arch/mips/include/asm/cache.h -@@ -9,10 +9,11 @@ - #ifndef _ASM_CACHE_H - #define _ASM_CACHE_H - -+#include - #include - - #define L1_CACHE_SHIFT CONFIG_MIPS_L1_CACHE_SHIFT --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define SMP_CACHE_SHIFT L1_CACHE_SHIFT - #define SMP_CACHE_BYTES L1_CACHE_BYTES -diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h -index 455c0ac..ad65fbe 100644 ---- a/arch/mips/include/asm/elf.h -+++ b/arch/mips/include/asm/elf.h -@@ -372,13 +372,16 @@ extern const char *__elf_platform; - #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) - #endif - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL) -+ -+#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) -+#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) -+#endif -+ - #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 - struct linux_binprm; - extern int arch_setup_additional_pages(struct linux_binprm *bprm, - int uses_interp); - --struct mm_struct; --extern unsigned long arch_randomize_brk(struct mm_struct *mm); --#define arch_randomize_brk arch_randomize_brk -- - #endif /* _ASM_ELF_H */ -diff --git a/arch/mips/include/asm/exec.h b/arch/mips/include/asm/exec.h -index c1f6afa..38cc6e9 100644 ---- a/arch/mips/include/asm/exec.h -+++ b/arch/mips/include/asm/exec.h -@@ -12,6 +12,6 @@ - #ifndef _ASM_EXEC_H - #define _ASM_EXEC_H - --extern unsigned long arch_align_stack(unsigned long sp); -+#define arch_align_stack(x) ((x) & ~0xfUL) - - #endif /* _ASM_EXEC_H */ -diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h -index da9bd7d..91aa7ab 100644 ---- a/arch/mips/include/asm/page.h -+++ b/arch/mips/include/asm/page.h -@@ -98,7 +98,7 @@ extern void copy_user_highpage(struct page *to, struct page *from, - #ifdef CONFIG_CPU_MIPS32 - typedef struct { unsigned long pte_low, pte_high; } pte_t; - #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) -- #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) -+ #define __pte(x) ({ pte_t __pte = {(x), (x) >> 32}; __pte; }) - #else - typedef struct { unsigned long long pte; } pte_t; - #define pte_val(x) ((x).pte) -diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h -index 881d18b..cea38bc 100644 ---- a/arch/mips/include/asm/pgalloc.h -+++ b/arch/mips/include/asm/pgalloc.h -@@ -37,6 +37,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - { - set_pud(pud, __pud((unsigned long)pmd)); - } -+ -+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -+{ -+ pud_populate(mm, pud, pmd); -+} - #endif - - /* -diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h -index ca97e0e..cd08920 100644 ---- a/arch/mips/include/asm/thread_info.h -+++ b/arch/mips/include/asm/thread_info.h -@@ -111,6 +111,8 @@ register struct thread_info *__current_thread_info __asm__("$28"); - #define TIF_32BIT_ADDR 23 /* 32-bit address space (o32/n32) */ - #define TIF_FPUBOUND 24 /* thread bound to FPU-full CPU set */ - #define TIF_LOAD_WATCH 25 /* If set, load watch registers */ -+/* li takes a 32bit immediate */ -+#define TIF_GRSEC_SETXID 29 /* update credentials on syscall entry/exit */ - #define TIF_SYSCALL_TRACE 31 /* syscall trace active */ - - #ifdef CONFIG_MIPS32_O32 -@@ -134,15 +136,18 @@ register struct thread_info *__current_thread_info __asm__("$28"); - #define _TIF_32BIT_ADDR (1< - #include - #include -diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c -index ff44823..97f8906 100644 ---- a/arch/mips/kernel/binfmt_elfo32.c -+++ b/arch/mips/kernel/binfmt_elfo32.c -@@ -52,6 +52,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; - #undef ELF_ET_DYN_BASE - #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL) -+ -+#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) -+#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) -+#endif -+ - #include - - /* -diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c -index 69b17a9..9db82f9 100644 ---- a/arch/mips/kernel/process.c -+++ b/arch/mips/kernel/process.c -@@ -478,15 +478,3 @@ unsigned long get_wchan(struct task_struct *task) - out: - return pc; - } -- --/* -- * Don't forget that the stack pointer must be aligned on a 8 bytes -- * boundary for 32-bits ABI and 16 bytes for 64-bits ABI. -- */ --unsigned long arch_align_stack(unsigned long sp) --{ -- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) -- sp -= get_random_int() & ~PAGE_MASK; -- -- return sp & ALMASK; --} -diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c -index 4812c6d..2069554 100644 ---- a/arch/mips/kernel/ptrace.c -+++ b/arch/mips/kernel/ptrace.c -@@ -528,6 +528,10 @@ static inline int audit_arch(void) - return arch; - } - -+#ifdef CONFIG_GRKERNSEC_SETXID -+extern void gr_delayed_cred_worker(void); -+#endif -+ - /* - * Notification of system call entry/exit - * - triggered by current->work.syscall_trace -@@ -537,6 +541,11 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs) - /* do the secure computing check first */ - secure_computing_strict(regs->regs[2]); - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - if (!(current->ptrace & PT_PTRACED)) - goto out; - -diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S -index a632bc1..0b77c7c 100644 ---- a/arch/mips/kernel/scall32-o32.S -+++ b/arch/mips/kernel/scall32-o32.S -@@ -52,7 +52,7 @@ NESTED(handle_sys, PT_SIZE, sp) - - stack_done: - lw t0, TI_FLAGS($28) # syscall tracing enabled? -- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT -+ li t1, _TIF_SYSCALL_WORK - and t0, t1 - bnez t0, syscall_trace_entry # -> yes - -diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S -index 3b5a5e9..e1ee86d 100644 ---- a/arch/mips/kernel/scall64-64.S -+++ b/arch/mips/kernel/scall64-64.S -@@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp) - - sd a3, PT_R26(sp) # save a3 for syscall restarting - -- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT -+ li t1, _TIF_SYSCALL_WORK - LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? - and t0, t1, t0 - bnez t0, syscall_trace_entry -diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S -index 6be6f70..1859577 100644 ---- a/arch/mips/kernel/scall64-n32.S -+++ b/arch/mips/kernel/scall64-n32.S -@@ -53,7 +53,7 @@ NESTED(handle_sysn32, PT_SIZE, sp) - - sd a3, PT_R26(sp) # save a3 for syscall restarting - -- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT -+ li t1, _TIF_SYSCALL_WORK - LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? - and t0, t1, t0 - bnez t0, n32_syscall_trace_entry -diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S -index 5422855..74e63a3 100644 ---- a/arch/mips/kernel/scall64-o32.S -+++ b/arch/mips/kernel/scall64-o32.S -@@ -81,7 +81,7 @@ NESTED(handle_sys, PT_SIZE, sp) - PTR 4b, bad_stack - .previous - -- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT -+ li t1, _TIF_SYSCALL_WORK - LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? - and t0, t1, t0 - bnez t0, trace_a_syscall -diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c -index c14f6df..537e729 100644 ---- a/arch/mips/mm/fault.c -+++ b/arch/mips/mm/fault.c -@@ -27,6 +27,23 @@ - #include /* For VMALLOC_END */ - #include - -+#ifdef CONFIG_PAX_PAGEEXEC -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 5; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - /* - * This routine handles page faults. It determines the address, - * and the problem, and then passes it off to one of the appropriate -diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c -index 302d779..7d35bf8 100644 ---- a/arch/mips/mm/mmap.c -+++ b/arch/mips/mm/mmap.c -@@ -95,6 +95,11 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, - do_color_align = 1; - - /* requesting a specific address */ -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - if (addr) { - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); -@@ -102,8 +107,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vmm, addr, len)) - return addr; - } - -@@ -118,7 +122,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, - /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr) - return -ENOMEM; -- if (!vma || addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vmm, addr, len)) - return addr; - addr = vma->vm_end; - if (do_color_align) -@@ -145,7 +149,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr - len); -- if (!vma || addr <= vma->vm_start) { -+ if (check_heap_stack_gap(vmm, addr - len, len)) - /* cache the address as a hint for next time */ - return mm->free_area_cache = addr - len; - } -@@ -165,7 +169,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, - * return with success: - */ - vma = find_vma(mm, addr); -- if (likely(!vma || addr + len <= vma->vm_start)) { -+ if (check_heap_stack_gap(vmm, addr, len)) { - /* cache the address as a hint for next time */ - return mm->free_area_cache = addr; - } -@@ -242,30 +246,3 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - mm->unmap_area = arch_unmap_area_topdown; - } - } -- --static inline unsigned long brk_rnd(void) --{ -- unsigned long rnd = get_random_int(); -- -- rnd = rnd << PAGE_SHIFT; -- /* 8MB for 32bit, 256MB for 64bit */ -- if (TASK_IS_32BIT_ADDR) -- rnd = rnd & 0x7ffffful; -- else -- rnd = rnd & 0xffffffful; -- -- return rnd; --} -- --unsigned long arch_randomize_brk(struct mm_struct *mm) --{ -- unsigned long base = mm->brk; -- unsigned long ret; -- -- ret = PAGE_ALIGN(base + brk_rnd()); -- -- if (ret < mm->brk) -- return mm->brk; -- -- return ret; --} -diff --git a/arch/mn10300/proc-mn103e010/include/proc/cache.h b/arch/mn10300/proc-mn103e010/include/proc/cache.h -index 967d144..db12197 100644 ---- a/arch/mn10300/proc-mn103e010/include/proc/cache.h -+++ b/arch/mn10300/proc-mn103e010/include/proc/cache.h -@@ -11,12 +11,14 @@ - #ifndef _ASM_PROC_CACHE_H - #define _ASM_PROC_CACHE_H - -+#include -+ - /* L1 cache */ - - #define L1_CACHE_NWAYS 4 /* number of ways in caches */ - #define L1_CACHE_NENTRIES 256 /* number of entries in each way */ --#define L1_CACHE_BYTES 16 /* bytes per entry */ - #define L1_CACHE_SHIFT 4 /* shift for bytes per entry */ -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */ - #define L1_CACHE_WAYDISP 0x1000 /* displacement of one way from the next */ - - #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */ -diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h -index bcb5df2..84fabd2 100644 ---- a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h -+++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h -@@ -16,13 +16,15 @@ - #ifndef _ASM_PROC_CACHE_H - #define _ASM_PROC_CACHE_H - -+#include -+ - /* - * L1 cache - */ - #define L1_CACHE_NWAYS 4 /* number of ways in caches */ - #define L1_CACHE_NENTRIES 128 /* number of entries in each way */ --#define L1_CACHE_BYTES 32 /* bytes per entry */ - #define L1_CACHE_SHIFT 5 /* shift for bytes per entry */ -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */ - #define L1_CACHE_WAYDISP 0x1000 /* distance from one way to the next */ - - #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */ -diff --git a/arch/openrisc/include/asm/cache.h b/arch/openrisc/include/asm/cache.h -index 4ce7a01..449202a 100644 ---- a/arch/openrisc/include/asm/cache.h -+++ b/arch/openrisc/include/asm/cache.h -@@ -19,11 +19,13 @@ - #ifndef __ASM_OPENRISC_CACHE_H - #define __ASM_OPENRISC_CACHE_H - -+#include -+ - /* FIXME: How can we replace these with values from the CPU... - * they shouldn't be hard-coded! - */ - --#define L1_CACHE_BYTES 16 - #define L1_CACHE_SHIFT 4 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #endif /* __ASM_OPENRISC_CACHE_H */ -diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h -index af9cf30..2aae9b2 100644 ---- a/arch/parisc/include/asm/atomic.h -+++ b/arch/parisc/include/asm/atomic.h -@@ -229,6 +229,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) - - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - #endif /* !CONFIG_64BIT */ - - -diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h -index 47f11c7..3420df2 100644 ---- a/arch/parisc/include/asm/cache.h -+++ b/arch/parisc/include/asm/cache.h -@@ -5,6 +5,7 @@ - #ifndef __ARCH_PARISC_CACHE_H - #define __ARCH_PARISC_CACHE_H - -+#include - - /* - * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have -@@ -15,13 +16,13 @@ - * just ruin performance. - */ - #ifdef CONFIG_PA20 --#define L1_CACHE_BYTES 64 - #define L1_CACHE_SHIFT 6 - #else --#define L1_CACHE_BYTES 32 - #define L1_CACHE_SHIFT 5 - #endif - -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) -+ - #ifndef __ASSEMBLY__ - - #define SMP_CACHE_BYTES L1_CACHE_BYTES -diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h -index 19f6cb1..6c78cf2 100644 ---- a/arch/parisc/include/asm/elf.h -+++ b/arch/parisc/include/asm/elf.h -@@ -342,6 +342,13 @@ struct pt_regs; /* forward declaration... */ - - #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE 0x10000UL -+ -+#define PAX_DELTA_MMAP_LEN 16 -+#define PAX_DELTA_STACK_LEN 16 -+#endif -+ - /* This yields a mask that user programs can use to figure out what - instruction set this CPU supports. This could be done in user space, - but it's not easy, and we've already done it here. */ -diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h -index fc987a1..6e068ef 100644 ---- a/arch/parisc/include/asm/pgalloc.h -+++ b/arch/parisc/include/asm/pgalloc.h -@@ -61,6 +61,11 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) - (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT)); - } - -+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) -+{ -+ pgd_populate(mm, pgd, pmd); -+} -+ - static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) - { - pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT, -@@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) - #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) - #define pmd_free(mm, x) do { } while (0) - #define pgd_populate(mm, pmd, pte) BUG() -+#define pgd_populate_kernel(mm, pmd, pte) BUG() - - #endif - -diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h -index 7df49fa..38b62bf 100644 ---- a/arch/parisc/include/asm/pgtable.h -+++ b/arch/parisc/include/asm/pgtable.h -@@ -218,6 +218,17 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long); - #define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED) - #define PAGE_COPY PAGE_EXECREAD - #define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED) -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED) -+# define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) -+# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) -+#else -+# define PAGE_SHARED_NOEXEC PAGE_SHARED -+# define PAGE_COPY_NOEXEC PAGE_COPY -+# define PAGE_READONLY_NOEXEC PAGE_READONLY -+#endif -+ - #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) - #define PAGE_KERNEL_EXEC __pgprot(_PAGE_KERNEL_EXEC) - #define PAGE_KERNEL_RWX __pgprot(_PAGE_KERNEL_RWX) -diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h -index 4ba2c93..f5e3974 100644 ---- a/arch/parisc/include/asm/uaccess.h -+++ b/arch/parisc/include/asm/uaccess.h -@@ -251,10 +251,10 @@ static inline unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n) - { -- int sz = __compiletime_object_size(to); -+ size_t sz = __compiletime_object_size(to); - int ret = -EFAULT; - -- if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n)) -+ if (likely(sz == (size_t)-1 || !__builtin_constant_p(n) || sz >= n)) - ret = __copy_from_user(to, from, n); - else - copy_from_user_overflow(); -diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c -index 5e34ccf..672bc9c 100644 ---- a/arch/parisc/kernel/module.c -+++ b/arch/parisc/kernel/module.c -@@ -98,16 +98,38 @@ - - /* three functions to determine where in the module core - * or init pieces the location is */ -+static inline int in_init_rx(struct module *me, void *loc) -+{ -+ return (loc >= me->module_init_rx && -+ loc < (me->module_init_rx + me->init_size_rx)); -+} -+ -+static inline int in_init_rw(struct module *me, void *loc) -+{ -+ return (loc >= me->module_init_rw && -+ loc < (me->module_init_rw + me->init_size_rw)); -+} -+ - static inline int in_init(struct module *me, void *loc) - { -- return (loc >= me->module_init && -- loc <= (me->module_init + me->init_size)); -+ return in_init_rx(me, loc) || in_init_rw(me, loc); -+} -+ -+static inline int in_core_rx(struct module *me, void *loc) -+{ -+ return (loc >= me->module_core_rx && -+ loc < (me->module_core_rx + me->core_size_rx)); -+} -+ -+static inline int in_core_rw(struct module *me, void *loc) -+{ -+ return (loc >= me->module_core_rw && -+ loc < (me->module_core_rw + me->core_size_rw)); - } - - static inline int in_core(struct module *me, void *loc) - { -- return (loc >= me->module_core && -- loc <= (me->module_core + me->core_size)); -+ return in_core_rx(me, loc) || in_core_rw(me, loc); - } - - static inline int in_local(struct module *me, void *loc) -@@ -373,13 +395,13 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr, - } - - /* align things a bit */ -- me->core_size = ALIGN(me->core_size, 16); -- me->arch.got_offset = me->core_size; -- me->core_size += gots * sizeof(struct got_entry); -+ me->core_size_rw = ALIGN(me->core_size_rw, 16); -+ me->arch.got_offset = me->core_size_rw; -+ me->core_size_rw += gots * sizeof(struct got_entry); - -- me->core_size = ALIGN(me->core_size, 16); -- me->arch.fdesc_offset = me->core_size; -- me->core_size += fdescs * sizeof(Elf_Fdesc); -+ me->core_size_rw = ALIGN(me->core_size_rw, 16); -+ me->arch.fdesc_offset = me->core_size_rw; -+ me->core_size_rw += fdescs * sizeof(Elf_Fdesc); - - me->arch.got_max = gots; - me->arch.fdesc_max = fdescs; -@@ -397,7 +419,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend) - - BUG_ON(value == 0); - -- got = me->module_core + me->arch.got_offset; -+ got = me->module_core_rw + me->arch.got_offset; - for (i = 0; got[i].addr; i++) - if (got[i].addr == value) - goto out; -@@ -415,7 +437,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend) - #ifdef CONFIG_64BIT - static Elf_Addr get_fdesc(struct module *me, unsigned long value) - { -- Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset; -+ Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset; - - if (!value) { - printk(KERN_ERR "%s: zero OPD requested!\n", me->name); -@@ -433,7 +455,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value) - - /* Create new one */ - fdesc->addr = value; -- fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset; -+ fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; - return (Elf_Addr)fdesc; - } - #endif /* CONFIG_64BIT */ -@@ -845,7 +867,7 @@ register_unwind_table(struct module *me, - - table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr; - end = table + sechdrs[me->arch.unwind_section].sh_size; -- gp = (Elf_Addr)me->module_core + me->arch.got_offset; -+ gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; - - DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n", - me->arch.unwind_section, table, end, gp); -diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c -index f76c108..8117482 100644 ---- a/arch/parisc/kernel/sys_parisc.c -+++ b/arch/parisc/kernel/sys_parisc.c -@@ -43,7 +43,7 @@ static unsigned long get_unshared_area(unsigned long addr, unsigned long len) - /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr) - return -ENOMEM; -- if (!vma || addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - return addr; - addr = vma->vm_end; - } -@@ -81,7 +81,7 @@ static unsigned long get_shared_area(struct address_space *mapping, - /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr) - return -ENOMEM; -- if (!vma || addr + len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - return addr; - addr = DCACHE_ALIGN(vma->vm_end - offset) + offset; - if (addr < vma->vm_end) /* handle wraparound */ -@@ -100,7 +100,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, - if (flags & MAP_FIXED) - return addr; - if (!addr) -- addr = TASK_UNMAPPED_BASE; -+ addr = current->mm->mmap_base; - - if (filp) { - addr = get_shared_area(filp->f_mapping, addr, len, pgoff); -diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c -index 45ba99f..8e22c33 100644 ---- a/arch/parisc/kernel/traps.c -+++ b/arch/parisc/kernel/traps.c -@@ -732,9 +732,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs) - - down_read(¤t->mm->mmap_sem); - vma = find_vma(current->mm,regs->iaoq[0]); -- if (vma && (regs->iaoq[0] >= vma->vm_start) -- && (vma->vm_flags & VM_EXEC)) { -- -+ if (vma && (regs->iaoq[0] >= vma->vm_start)) { - fault_address = regs->iaoq[0]; - fault_space = regs->iasq[0]; - -diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c -index 18162ce..94de376 100644 ---- a/arch/parisc/mm/fault.c -+++ b/arch/parisc/mm/fault.c -@@ -15,6 +15,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -52,7 +53,7 @@ DEFINE_PER_CPU(struct exception_data, exception_data); - static unsigned long - parisc_acctyp(unsigned long code, unsigned int inst) - { -- if (code == 6 || code == 16) -+ if (code == 6 || code == 7 || code == 16) - return VM_EXEC; - - switch (inst & 0xf0000000) { -@@ -138,6 +139,116 @@ parisc_acctyp(unsigned long code, unsigned int inst) - } - #endif - -+#ifdef CONFIG_PAX_PAGEEXEC -+/* -+ * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address) -+ * -+ * returns 1 when task should be killed -+ * 2 when rt_sigreturn trampoline was detected -+ * 3 when unpatched PLT trampoline was detected -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ -+#ifdef CONFIG_PAX_EMUPLT -+ int err; -+ -+ do { /* PaX: unpatched PLT emulation */ -+ unsigned int bl, depwi; -+ -+ err = get_user(bl, (unsigned int *)instruction_pointer(regs)); -+ err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4)); -+ -+ if (err) -+ break; -+ -+ if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) { -+ unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12; -+ -+ err = get_user(ldw, (unsigned int *)addr); -+ err |= get_user(bv, (unsigned int *)(addr+4)); -+ err |= get_user(ldw2, (unsigned int *)(addr+8)); -+ -+ if (err) -+ break; -+ -+ if (ldw == 0x0E801096U && -+ bv == 0xEAC0C000U && -+ ldw2 == 0x0E881095U) -+ { -+ unsigned int resolver, map; -+ -+ err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8)); -+ err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12)); -+ if (err) -+ break; -+ -+ regs->gr[20] = instruction_pointer(regs)+8; -+ regs->gr[21] = map; -+ regs->gr[22] = resolver; -+ regs->iaoq[0] = resolver | 3UL; -+ regs->iaoq[1] = regs->iaoq[0] + 4; -+ return 3; -+ } -+ } -+ } while (0); -+#endif -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+ -+#ifndef CONFIG_PAX_EMUSIGRT -+ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) -+ return 1; -+#endif -+ -+ do { /* PaX: rt_sigreturn emulation */ -+ unsigned int ldi1, ldi2, bel, nop; -+ -+ err = get_user(ldi1, (unsigned int *)instruction_pointer(regs)); -+ err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4)); -+ err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8)); -+ err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12)); -+ -+ if (err) -+ break; -+ -+ if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) && -+ ldi2 == 0x3414015AU && -+ bel == 0xE4008200U && -+ nop == 0x08000240U) -+ { -+ regs->gr[25] = (ldi1 & 2) >> 1; -+ regs->gr[20] = __NR_rt_sigreturn; -+ regs->gr[31] = regs->iaoq[1] + 16; -+ regs->sr[0] = regs->iasq[1]; -+ regs->iaoq[0] = 0x100UL; -+ regs->iaoq[1] = regs->iaoq[0] + 4; -+ regs->iasq[0] = regs->sr[2]; -+ regs->iasq[1] = regs->sr[2]; -+ return 2; -+ } -+ } while (0); -+#endif -+ -+ return 1; -+} -+ -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 5; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - int fixup_exception(struct pt_regs *regs) - { - const struct exception_table_entry *fix; -@@ -192,8 +303,33 @@ good_area: - - acc_type = parisc_acctyp(code,regs->iir); - -- if ((vma->vm_flags & acc_type) != acc_type) -+ if ((vma->vm_flags & acc_type) != acc_type) { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) && -+ (address & ~3UL) == instruction_pointer(regs)) -+ { -+ up_read(&mm->mmap_sem); -+ switch (pax_handle_fetch_fault(regs)) { -+ -+#ifdef CONFIG_PAX_EMUPLT -+ case 3: -+ return; -+#endif -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+ case 2: -+ return; -+#endif -+ -+ } -+ pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - goto bad_area; -+ } - - /* - * If for any reason at all we couldn't handle the fault, make -diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h -index da29032..f76c24c 100644 ---- a/arch/powerpc/include/asm/atomic.h -+++ b/arch/powerpc/include/asm/atomic.h -@@ -522,6 +522,16 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v) - return t1; - } - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - #endif /* __powerpc64__ */ - - #endif /* __KERNEL__ */ -diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h -index 9e495c9..b6878e5 100644 ---- a/arch/powerpc/include/asm/cache.h -+++ b/arch/powerpc/include/asm/cache.h -@@ -3,6 +3,7 @@ - - #ifdef __KERNEL__ - -+#include - - /* bytes per L1 cache line */ - #if defined(CONFIG_8xx) || defined(CONFIG_403GCX) -@@ -22,7 +23,7 @@ - #define L1_CACHE_SHIFT 7 - #endif - --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define SMP_CACHE_BYTES L1_CACHE_BYTES - -diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h -index 3bf9cca..e7457d0 100644 ---- a/arch/powerpc/include/asm/elf.h -+++ b/arch/powerpc/include/asm/elf.h -@@ -178,8 +178,19 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[ELF_NVSRHALFREG]; - the loader. We need to make sure that it is out of the way of the program - that it will "exec", and that there is sufficient room for the brk. */ - --extern unsigned long randomize_et_dyn(unsigned long base); --#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000)) -+#define ELF_ET_DYN_BASE (0x20000000) -+ -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (0x10000000UL) -+ -+#ifdef __powerpc64__ -+#define PAX_DELTA_MMAP_LEN (is_32bit_task() ? 16 : 28) -+#define PAX_DELTA_STACK_LEN (is_32bit_task() ? 16 : 28) -+#else -+#define PAX_DELTA_MMAP_LEN 15 -+#define PAX_DELTA_STACK_LEN 15 -+#endif -+#endif - - /* - * Our registers are always unsigned longs, whether we're a 32 bit -@@ -274,9 +285,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, - (0x7ff >> (PAGE_SHIFT - 12)) : \ - (0x3ffff >> (PAGE_SHIFT - 12))) - --extern unsigned long arch_randomize_brk(struct mm_struct *mm); --#define arch_randomize_brk arch_randomize_brk -- - #endif /* __KERNEL__ */ - - /* -diff --git a/arch/powerpc/include/asm/exec.h b/arch/powerpc/include/asm/exec.h -index 8196e9c..d83a9f3 100644 ---- a/arch/powerpc/include/asm/exec.h -+++ b/arch/powerpc/include/asm/exec.h -@@ -4,6 +4,6 @@ - #ifndef _ASM_POWERPC_EXEC_H - #define _ASM_POWERPC_EXEC_H - --extern unsigned long arch_align_stack(unsigned long sp); -+#define arch_align_stack(x) ((x) & ~0xfUL) - - #endif /* _ASM_POWERPC_EXEC_H */ -diff --git a/arch/powerpc/include/asm/kmap_types.h b/arch/powerpc/include/asm/kmap_types.h -index 5acabbd..7ea14fa 100644 ---- a/arch/powerpc/include/asm/kmap_types.h -+++ b/arch/powerpc/include/asm/kmap_types.h -@@ -10,7 +10,7 @@ - * 2 of the License, or (at your option) any later version. - */ - --#define KM_TYPE_NR 16 -+#define KM_TYPE_NR 17 - - #endif /* __KERNEL__ */ - #endif /* _ASM_POWERPC_KMAP_TYPES_H */ -diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h -index d4a7f64..451de1c 100644 ---- a/arch/powerpc/include/asm/mman.h -+++ b/arch/powerpc/include/asm/mman.h -@@ -44,7 +44,7 @@ static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) - } - #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) - --static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) -+static inline pgprot_t arch_vm_get_page_prot(vm_flags_t vm_flags) - { - return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); - } -diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h -index f072e97..b436dee 100644 ---- a/arch/powerpc/include/asm/page.h -+++ b/arch/powerpc/include/asm/page.h -@@ -220,8 +220,9 @@ extern long long virt_phys_offset; - * and needs to be executable. This means the whole heap ends - * up being executable. - */ --#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ -- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) -+#define VM_DATA_DEFAULT_FLAGS32 \ -+ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ -+ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - - #define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) -@@ -249,6 +250,9 @@ extern long long virt_phys_offset; - #define is_kernel_addr(x) ((x) >= PAGE_OFFSET) - #endif - -+#define ktla_ktva(addr) (addr) -+#define ktva_ktla(addr) (addr) -+ - /* - * Use the top bit of the higher-level page table entries to indicate whether - * the entries we point to contain hugepages. This works because we know that -diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h -index fed85e6..da5c71b 100644 ---- a/arch/powerpc/include/asm/page_64.h -+++ b/arch/powerpc/include/asm/page_64.h -@@ -146,15 +146,18 @@ do { \ - * stack by default, so in the absence of a PT_GNU_STACK program header - * we turn execute permission off. - */ --#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ -- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) -+#define VM_STACK_DEFAULT_FLAGS32 \ -+ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ -+ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - - #define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - -+#ifndef CONFIG_PAX_PAGEEXEC - #define VM_STACK_DEFAULT_FLAGS \ - (is_32bit_task() ? \ - VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64) -+#endif - - #include - -diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h -index 292725c..f87ae14 100644 ---- a/arch/powerpc/include/asm/pgalloc-64.h -+++ b/arch/powerpc/include/asm/pgalloc-64.h -@@ -50,6 +50,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) - #ifndef CONFIG_PPC_64K_PAGES - - #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) -+#define pgd_populate_kernel(MM, PGD, PUD) pgd_populate((MM), (PGD), (PUD)) - - static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) - { -@@ -67,6 +68,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - pud_set(pud, (unsigned long)pmd); - } - -+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -+{ -+ pud_populate(mm, pud, pmd); -+} -+ - #define pmd_populate(mm, pmd, pte_page) \ - pmd_populate_kernel(mm, pmd, page_address(pte_page)) - #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) -@@ -76,6 +82,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - #else /* CONFIG_PPC_64K_PAGES */ - - #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) -+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) - - static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, - pte_t *pte) -diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h -index 2e0e411..7899c68 100644 ---- a/arch/powerpc/include/asm/pgtable.h -+++ b/arch/powerpc/include/asm/pgtable.h -@@ -2,6 +2,7 @@ - #define _ASM_POWERPC_PGTABLE_H - #ifdef __KERNEL__ - -+#include - #ifndef __ASSEMBLY__ - #include /* For TASK_SIZE */ - #include -diff --git a/arch/powerpc/include/asm/pte-hash32.h b/arch/powerpc/include/asm/pte-hash32.h -index 4aad413..85d86bf 100644 ---- a/arch/powerpc/include/asm/pte-hash32.h -+++ b/arch/powerpc/include/asm/pte-hash32.h -@@ -21,6 +21,7 @@ - #define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */ - #define _PAGE_USER 0x004 /* usermode access allowed */ - #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ -+#define _PAGE_EXEC _PAGE_GUARDED - #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ - #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ - #define _PAGE_WRITETHRU 0x040 /* W: cache write-through */ -diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h -index 6386086..6982225 100644 ---- a/arch/powerpc/include/asm/reg.h -+++ b/arch/powerpc/include/asm/reg.h -@@ -212,6 +212,7 @@ - #define SPRN_DBCR 0x136 /* e300 Data Breakpoint Control Reg */ - #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */ - #define DSISR_NOHPTE 0x40000000 /* no translation found */ -+#define DSISR_GUARDED 0x10000000 /* fetch from guarded storage */ - #define DSISR_PROTFAULT 0x08000000 /* protection fault */ - #define DSISR_ISSTORE 0x02000000 /* access was a store */ - #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */ -diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h -index faf9352..ab2ccec 100644 ---- a/arch/powerpc/include/asm/thread_info.h -+++ b/arch/powerpc/include/asm/thread_info.h -@@ -97,12 +97,14 @@ static inline struct thread_info *current_thread_info(void) - #define TIF_PERFMON_CTXSW 6 /* perfmon needs ctxsw calls */ - #define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ - #define TIF_SINGLESTEP 8 /* singlestepping active */ --#define TIF_MEMDIE 9 /* is terminating due to OOM killer */ - #define TIF_SECCOMP 10 /* secure computing */ - #define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */ - #define TIF_NOERROR 12 /* Force successful syscall return */ - #define TIF_NOTIFY_RESUME 13 /* callback before returning to user */ - #define TIF_SYSCALL_TRACEPOINT 15 /* syscall tracepoint instrumentation */ -+#define TIF_MEMDIE 16 /* is terminating due to OOM killer */ -+/* mask must be expressable within 16 bits to satisfy 'andi' instruction reqs */ -+#define TIF_GRSEC_SETXID 9 /* update credentials on syscall entry/exit */ - - /* as above, but as bit values */ - #define _TIF_SYSCALL_TRACE (1< INT_MAX) -+ return n; -+ -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); -+ -+ if (likely(access_ok(VERIFY_READ, from, n))) -+ n = __copy_from_user(to, from, n); -+ else -+ memset(to, 0, n); -+ return n; -+} -+ -+static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) -+{ -+ if ((long)n < 0 || n > INT_MAX) -+ return n; -+ -+ if (likely(access_ok(VERIFY_WRITE, to, n))) { -+ if (!__builtin_constant_p(n)) -+ check_object_size(from, n, true); -+ n = __copy_to_user(to, from, n); -+ } -+ return n; -+} -+ -+extern unsigned long copy_in_user(void __user *to, const void __user *from, -+ unsigned long n); -+ -+#endif /* __powerpc64__ */ -+ - extern unsigned long __clear_user(void __user *addr, unsigned long size); - - static inline unsigned long clear_user(void __user *addr, unsigned long size) -diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S -index 98be7f0..8ef62de 100644 ---- a/arch/powerpc/kernel/exceptions-64e.S -+++ b/arch/powerpc/kernel/exceptions-64e.S -@@ -661,6 +661,7 @@ storage_fault_common: - std r14,_DAR(r1) - std r15,_DSISR(r1) - addi r3,r1,STACK_FRAME_OVERHEAD -+ bl .save_nvgprs - mr r4,r14 - mr r5,r15 - ld r14,PACA_EXGEN+EX_R14(r13) -@@ -669,8 +670,7 @@ storage_fault_common: - cmpdi r3,0 - bne- 1f - b .ret_from_except_lite --1: bl .save_nvgprs -- mr r5,r3 -+1: mr r5,r3 - addi r3,r1,STACK_FRAME_OVERHEAD - ld r4,_DAR(r1) - bl .bad_page_fault -diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S -index 39aa97d..dc916ee 100644 ---- a/arch/powerpc/kernel/exceptions-64s.S -+++ b/arch/powerpc/kernel/exceptions-64s.S -@@ -890,10 +890,10 @@ handle_page_fault: - 11: ld r4,_DAR(r1) - ld r5,_DSISR(r1) - addi r3,r1,STACK_FRAME_OVERHEAD -+ bl .save_nvgprs - bl .do_page_fault - cmpdi r3,0 - beq+ 12f -- bl .save_nvgprs - mr r5,r3 - addi r3,r1,STACK_FRAME_OVERHEAD - lwz r4,_DAR(r1) -diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c -index 2e3200c..72095ce 100644 ---- a/arch/powerpc/kernel/module_32.c -+++ b/arch/powerpc/kernel/module_32.c -@@ -162,7 +162,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr, - me->arch.core_plt_section = i; - } - if (!me->arch.core_plt_section || !me->arch.init_plt_section) { -- printk("Module doesn't contain .plt or .init.plt sections.\n"); -+ printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name); - return -ENOEXEC; - } - -@@ -192,11 +192,16 @@ static uint32_t do_plt_call(void *location, - - DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); - /* Init, or core PLT? */ -- if (location >= mod->module_core -- && location < mod->module_core + mod->core_size) -+ if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) || -+ (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw)) - entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr; -- else -+ else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) || -+ (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw)) - entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr; -+ else { -+ printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name); -+ return ~0UL; -+ } - - /* Find this entry, or if that fails, the next avail. entry */ - while (entry->jump[0]) { -diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c -index 1a1f2dd..f4d1bb4 100644 ---- a/arch/powerpc/kernel/process.c -+++ b/arch/powerpc/kernel/process.c -@@ -681,8 +681,8 @@ void show_regs(struct pt_regs * regs) - * Lookup NIP late so we have the best change of getting the - * above info out without failing - */ -- printk("NIP ["REG"] %pS\n", regs->nip, (void *)regs->nip); -- printk("LR ["REG"] %pS\n", regs->link, (void *)regs->link); -+ printk("NIP ["REG"] %pA\n", regs->nip, (void *)regs->nip); -+ printk("LR ["REG"] %pA\n", regs->link, (void *)regs->link); - #endif - show_stack(current, (unsigned long *) regs->gpr[1]); - if (!user_mode(regs)) -@@ -1181,10 +1181,10 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) - newsp = stack[0]; - ip = stack[STACK_FRAME_LR_SAVE]; - if (!firstframe || ip != lr) { -- printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip); -+ printk("["REG"] ["REG"] %pA", sp, ip, (void *)ip); - #ifdef CONFIG_FUNCTION_GRAPH_TRACER - if ((ip == rth || ip == mrth) && curr_frame >= 0) { -- printk(" (%pS)", -+ printk(" (%pA)", - (void *)current->ret_stack[curr_frame].ret); - curr_frame--; - } -@@ -1204,7 +1204,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) - struct pt_regs *regs = (struct pt_regs *) - (sp + STACK_FRAME_OVERHEAD); - lr = regs->link; -- printk("--- Exception: %lx at %pS\n LR = %pS\n", -+ printk("--- Exception: %lx at %pA\n LR = %pA\n", - regs->trap, (void *)regs->nip, (void *)lr); - firstframe = 1; - } -@@ -1246,58 +1246,3 @@ void __ppc64_runlatch_off(void) - mtspr(SPRN_CTRLT, ctrl); - } - #endif /* CONFIG_PPC64 */ -- --unsigned long arch_align_stack(unsigned long sp) --{ -- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) -- sp -= get_random_int() & ~PAGE_MASK; -- return sp & ~0xf; --} -- --static inline unsigned long brk_rnd(void) --{ -- unsigned long rnd = 0; -- -- /* 8MB for 32bit, 1GB for 64bit */ -- if (is_32bit_task()) -- rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT))); -- else -- rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT))); -- -- return rnd << PAGE_SHIFT; --} -- --unsigned long arch_randomize_brk(struct mm_struct *mm) --{ -- unsigned long base = mm->brk; -- unsigned long ret; -- --#ifdef CONFIG_PPC_STD_MMU_64 -- /* -- * If we are using 1TB segments and we are allowed to randomise -- * the heap, we can put it above 1TB so it is backed by a 1TB -- * segment. Otherwise the heap will be in the bottom 1TB -- * which always uses 256MB segments and this may result in a -- * performance penalty. -- */ -- if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) -- base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); --#endif -- -- ret = PAGE_ALIGN(base + brk_rnd()); -- -- if (ret < mm->brk) -- return mm->brk; -- -- return ret; --} -- --unsigned long randomize_et_dyn(unsigned long base) --{ -- unsigned long ret = PAGE_ALIGN(base + brk_rnd()); -- -- if (ret < base) -- return base; -- -- return ret; --} -diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c -index c10fc28..c4ef063 100644 ---- a/arch/powerpc/kernel/ptrace.c -+++ b/arch/powerpc/kernel/ptrace.c -@@ -1660,6 +1660,10 @@ long arch_ptrace(struct task_struct *child, long request, - return ret; - } - -+#ifdef CONFIG_GRKERNSEC_SETXID -+extern void gr_delayed_cred_worker(void); -+#endif -+ - /* - * We must return the syscall number to actually look up in the table. - * This can be -1L to skip running any syscall at all. -@@ -1670,6 +1674,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) - - secure_computing_strict(regs->gpr[0]); - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - if (test_thread_flag(TIF_SYSCALL_TRACE) && - tracehook_report_syscall_entry(regs)) - /* -@@ -1704,6 +1713,11 @@ void do_syscall_trace_leave(struct pt_regs *regs) - { - int step; - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - audit_syscall_exit(regs); - - if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) -diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c -index 8b4c049..dcd6ef3 100644 ---- a/arch/powerpc/kernel/signal_32.c -+++ b/arch/powerpc/kernel/signal_32.c -@@ -852,7 +852,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, - /* Save user registers on the stack */ - frame = &rt_sf->uc.uc_mcontext; - addr = frame; -- if (vdso32_rt_sigtramp && current->mm->context.vdso_base) { -+ if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { - if (save_user_regs(regs, frame, 0, 1)) - goto badframe; - regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp; -diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c -index d183f87..1867f1a 100644 ---- a/arch/powerpc/kernel/signal_64.c -+++ b/arch/powerpc/kernel/signal_64.c -@@ -430,7 +430,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, - current->thread.fpscr.val = 0; - - /* Set up to return from userspace. */ -- if (vdso64_rt_sigtramp && current->mm->context.vdso_base) { -+ if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { - regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp; - } else { - err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]); -diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c -index ae0843f..f16372c 100644 ---- a/arch/powerpc/kernel/traps.c -+++ b/arch/powerpc/kernel/traps.c -@@ -133,6 +133,8 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs) - return flags; - } - -+extern void gr_handle_kernel_exploit(void); -+ - static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, - int signr) - { -@@ -182,6 +184,9 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, - panic("Fatal exception in interrupt"); - if (panic_on_oops) - panic("Fatal exception"); -+ -+ gr_handle_kernel_exploit(); -+ - do_exit(signr); - } - -diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c -index b67db22..38825d2 100644 ---- a/arch/powerpc/kernel/vdso.c -+++ b/arch/powerpc/kernel/vdso.c -@@ -34,6 +34,7 @@ - #include - #include - #include -+#include - - #include "setup.h" - -@@ -218,7 +219,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) - vdso_base = VDSO32_MBASE; - #endif - -- current->mm->context.vdso_base = 0; -+ current->mm->context.vdso_base = ~0UL; - - /* vDSO has a problem and was disabled, just don't "enable" it for the - * process -@@ -238,7 +239,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) - vdso_base = get_unmapped_area(NULL, vdso_base, - (vdso_pages << PAGE_SHIFT) + - ((VDSO_ALIGNMENT - 1) & PAGE_MASK), -- 0, 0); -+ 0, MAP_PRIVATE | MAP_EXECUTABLE); - if (IS_ERR_VALUE(vdso_base)) { - rc = vdso_base; - goto fail_mmapsem; -diff --git a/arch/powerpc/lib/usercopy_64.c b/arch/powerpc/lib/usercopy_64.c -index 5eea6f3..5d10396 100644 ---- a/arch/powerpc/lib/usercopy_64.c -+++ b/arch/powerpc/lib/usercopy_64.c -@@ -9,22 +9,6 @@ - #include - #include - --unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) --{ -- if (likely(access_ok(VERIFY_READ, from, n))) -- n = __copy_from_user(to, from, n); -- else -- memset(to, 0, n); -- return n; --} -- --unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) --{ -- if (likely(access_ok(VERIFY_WRITE, to, n))) -- n = __copy_to_user(to, from, n); -- return n; --} -- - unsigned long copy_in_user(void __user *to, const void __user *from, - unsigned long n) - { -@@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user *to, const void __user *from, - return n; - } - --EXPORT_SYMBOL(copy_from_user); --EXPORT_SYMBOL(copy_to_user); - EXPORT_SYMBOL(copy_in_user); - -diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c -index 08ffcf5..a0ab912 100644 ---- a/arch/powerpc/mm/fault.c -+++ b/arch/powerpc/mm/fault.c -@@ -32,6 +32,10 @@ - #include - #include - #include -+#include -+#include -+#include -+#include - - #include - #include -@@ -68,6 +72,33 @@ static inline int notify_page_fault(struct pt_regs *regs) - } - #endif - -+#ifdef CONFIG_PAX_PAGEEXEC -+/* -+ * PaX: decide what to do with offenders (regs->nip = fault address) -+ * -+ * returns 1 when task should be killed -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ return 1; -+} -+ -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 5; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int __user *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - /* - * Check whether the instruction at regs->nip is a store using - * an update addressing form which will update r1. -@@ -215,7 +246,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address, - * indicate errors in DSISR but can validly be set in SRR1. - */ - if (trap == 0x400) -- error_code &= 0x48200000; -+ error_code &= 0x58200000; - else - is_write = error_code & DSISR_ISSTORE; - #else -@@ -366,7 +397,7 @@ good_area: - * "undefined". Of those that can be set, this is the only - * one which seems bad. - */ -- if (error_code & 0x10000000) -+ if (error_code & DSISR_GUARDED) - /* Guarded storage error. */ - goto bad_area; - #endif /* CONFIG_8xx */ -@@ -381,7 +412,7 @@ good_area: - * processors use the same I/D cache coherency mechanism - * as embedded. - */ -- if (error_code & DSISR_PROTFAULT) -+ if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED)) - goto bad_area; - #endif /* CONFIG_PPC_STD_MMU */ - -@@ -463,6 +494,23 @@ bad_area: - bad_area_nosemaphore: - /* User mode accesses cause a SIGSEGV */ - if (user_mode(regs)) { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (mm->pax_flags & MF_PAX_PAGEEXEC) { -+#ifdef CONFIG_PPC_STD_MMU -+ if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) { -+#else -+ if (is_exec && regs->nip == address) { -+#endif -+ switch (pax_handle_fetch_fault(regs)) { -+ } -+ -+ pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]); -+ do_group_exit(SIGKILL); -+ } -+ } -+#endif -+ - _exception(SIGSEGV, regs, code, address); - return 0; - } -diff --git a/arch/powerpc/mm/mmap_64.c b/arch/powerpc/mm/mmap_64.c -index 67a42ed..1c7210c 100644 ---- a/arch/powerpc/mm/mmap_64.c -+++ b/arch/powerpc/mm/mmap_64.c -@@ -91,10 +91,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - */ - if (mmap_is_legacy()) { - mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { - mm->mmap_base = mmap_base(); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c -index 73709f7..6b90313 100644 ---- a/arch/powerpc/mm/slice.c -+++ b/arch/powerpc/mm/slice.c -@@ -98,7 +98,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr, - if ((mm->task_size - len) < addr) - return 0; - vma = find_vma(mm, addr); -- return (!vma || (addr + len) <= vma->vm_start); -+ return check_heap_stack_gap(vma, addr, len); - } - - static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice) -@@ -256,7 +256,7 @@ full_search: - addr = _ALIGN_UP(addr + 1, 1ul << SLICE_HIGH_SHIFT); - continue; - } -- if (!vma || addr + len <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* - * Remember the place where we stopped the search: - */ -@@ -313,10 +313,14 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, - } - } - -- addr = mm->mmap_base; -- while (addr > len) { -+ if (mm->mmap_base < len) -+ addr = -ENOMEM; -+ else -+ addr = mm->mmap_base - len; -+ -+ while (!IS_ERR_VALUE(addr)) { - /* Go down by chunk size */ -- addr = _ALIGN_DOWN(addr - len, 1ul << pshift); -+ addr = _ALIGN_DOWN(addr, 1ul << pshift); - - /* Check for hit with different page size */ - mask = slice_range_to_mask(addr, len); -@@ -336,7 +340,7 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, - * return with success: - */ - vma = find_vma(mm, addr); -- if (!vma || (addr + len) <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* remember the address as a hint for next time */ - if (use_cache) - mm->free_area_cache = addr; -@@ -348,7 +352,7 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = vma->vm_start; -+ addr = skip_heap_stack_gap(vma, len); - } - - /* -@@ -426,6 +430,11 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, - if (fixed && addr > (mm->task_size - len)) - return -EINVAL; - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP)) -+ addr = 0; -+#endif -+ - /* If hint, make sure it matches our alignment restrictions */ - if (!fixed && addr) { - addr = _ALIGN_UP(addr, 1ul << pshift); -diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h -index c797832..ce575c8 100644 ---- a/arch/s390/include/asm/atomic.h -+++ b/arch/s390/include/asm/atomic.h -@@ -326,6 +326,16 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) - #define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0) - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - #define smp_mb__before_atomic_dec() smp_mb() - #define smp_mb__after_atomic_dec() smp_mb() - #define smp_mb__before_atomic_inc() smp_mb() -diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h -index 4d7ccac..d03d0ad 100644 ---- a/arch/s390/include/asm/cache.h -+++ b/arch/s390/include/asm/cache.h -@@ -9,8 +9,10 @@ - #ifndef __ARCH_S390_CACHE_H - #define __ARCH_S390_CACHE_H - --#define L1_CACHE_BYTES 256 -+#include -+ - #define L1_CACHE_SHIFT 8 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - #define NET_SKB_PAD 32 - - #define __read_mostly __attribute__((__section__(".data..read_mostly"))) -diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h -index 9b94a16..63d4034 100644 ---- a/arch/s390/include/asm/elf.h -+++ b/arch/s390/include/asm/elf.h -@@ -159,8 +159,14 @@ extern unsigned int vdso_enabled; - the loader. We need to make sure that it is out of the way of the program - that it will "exec", and that there is sufficient room for the brk. */ - --extern unsigned long randomize_et_dyn(unsigned long base); --#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2)) -+#define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2) -+ -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL) -+ -+#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) -+#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) -+#endif - - /* This yields a mask that user programs can use to figure out what - instruction set this CPU supports. */ -@@ -209,7 +215,4 @@ struct linux_binprm; - #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 - int arch_setup_additional_pages(struct linux_binprm *, int); - --extern unsigned long arch_randomize_brk(struct mm_struct *mm); --#define arch_randomize_brk arch_randomize_brk -- - #endif -diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h -index c4a93d6..4d2a9b4 100644 ---- a/arch/s390/include/asm/exec.h -+++ b/arch/s390/include/asm/exec.h -@@ -7,6 +7,6 @@ - #ifndef __ASM_EXEC_H - #define __ASM_EXEC_H - --extern unsigned long arch_align_stack(unsigned long sp); -+#define arch_align_stack(x) ((x) & ~0xfUL) - - #endif /* __ASM_EXEC_H */ -diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h -index a8ab18b..75ddbf0 100644 ---- a/arch/s390/include/asm/uaccess.h -+++ b/arch/s390/include/asm/uaccess.h -@@ -239,6 +239,10 @@ static inline unsigned long __must_check - copy_to_user(void __user *to, const void *from, unsigned long n) - { - might_fault(); -+ -+ if ((long)n < 0) -+ return n; -+ - if (access_ok(VERIFY_WRITE, to, n)) - n = __copy_to_user(to, from, n); - return n; -@@ -264,6 +268,9 @@ copy_to_user(void __user *to, const void *from, unsigned long n) - static inline unsigned long __must_check - __copy_from_user(void *to, const void __user *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - if (__builtin_constant_p(n) && (n <= 256)) - return uaccess.copy_from_user_small(n, from, to); - else -@@ -295,10 +302,14 @@ __compiletime_warning("copy_from_user() buffer size is not provably correct") - static inline unsigned long __must_check - copy_from_user(void *to, const void __user *from, unsigned long n) - { -- unsigned int sz = __compiletime_object_size(to); -+ size_t sz = __compiletime_object_size(to); - - might_fault(); -- if (unlikely(sz != -1 && sz < n)) { -+ -+ if ((long)n < 0) -+ return n; -+ -+ if (unlikely(sz != (size_t)-1 && sz < n)) { - copy_from_user_overflow(); - return n; - } -diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c -index 46412b1..e32874f 100644 ---- a/arch/s390/kernel/module.c -+++ b/arch/s390/kernel/module.c -@@ -160,11 +160,11 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, - - /* Increase core size by size of got & plt and set start - offsets for got and plt. */ -- me->core_size = ALIGN(me->core_size, 4); -- me->arch.got_offset = me->core_size; -- me->core_size += me->arch.got_size; -- me->arch.plt_offset = me->core_size; -- me->core_size += me->arch.plt_size; -+ me->core_size_rw = ALIGN(me->core_size_rw, 4); -+ me->arch.got_offset = me->core_size_rw; -+ me->core_size_rw += me->arch.got_size; -+ me->arch.plt_offset = me->core_size_rx; -+ me->core_size_rx += me->arch.plt_size; - return 0; - } - -@@ -241,7 +241,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - if (info->got_initialized == 0) { - Elf_Addr *gotent; - -- gotent = me->module_core + me->arch.got_offset + -+ gotent = me->module_core_rw + me->arch.got_offset + - info->got_offset; - *gotent = val; - info->got_initialized = 1; -@@ -265,7 +265,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - else if (r_type == R_390_GOTENT || - r_type == R_390_GOTPLTENT) - *(unsigned int *) loc = -- (val + (Elf_Addr) me->module_core - loc) >> 1; -+ (val + (Elf_Addr) me->module_core_rw - loc) >> 1; - else if (r_type == R_390_GOT64 || - r_type == R_390_GOTPLT64) - *(unsigned long *) loc = val; -@@ -279,7 +279,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */ - if (info->plt_initialized == 0) { - unsigned int *ip; -- ip = me->module_core + me->arch.plt_offset + -+ ip = me->module_core_rx + me->arch.plt_offset + - info->plt_offset; - #ifndef CONFIG_64BIT - ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */ -@@ -304,7 +304,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - val - loc + 0xffffUL < 0x1ffffeUL) || - (r_type == R_390_PLT32DBL && - val - loc + 0xffffffffULL < 0x1fffffffeULL))) -- val = (Elf_Addr) me->module_core + -+ val = (Elf_Addr) me->module_core_rx + - me->arch.plt_offset + - info->plt_offset; - val += rela->r_addend - loc; -@@ -326,7 +326,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - case R_390_GOTOFF32: /* 32 bit offset to GOT. */ - case R_390_GOTOFF64: /* 64 bit offset to GOT. */ - val = val + rela->r_addend - -- ((Elf_Addr) me->module_core + me->arch.got_offset); -+ ((Elf_Addr) me->module_core_rw + me->arch.got_offset); - if (r_type == R_390_GOTOFF16) - *(unsigned short *) loc = val; - else if (r_type == R_390_GOTOFF32) -@@ -336,7 +336,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, - break; - case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */ - case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */ -- val = (Elf_Addr) me->module_core + me->arch.got_offset + -+ val = (Elf_Addr) me->module_core_rw + me->arch.got_offset + - rela->r_addend - loc; - if (r_type == R_390_GOTPC) - *(unsigned int *) loc = val; -diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c -index 7331753..dd71de4 100644 ---- a/arch/s390/kernel/process.c -+++ b/arch/s390/kernel/process.c -@@ -316,39 +316,3 @@ unsigned long get_wchan(struct task_struct *p) - } - return 0; - } -- --unsigned long arch_align_stack(unsigned long sp) --{ -- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) -- sp -= get_random_int() & ~PAGE_MASK; -- return sp & ~0xf; --} -- --static inline unsigned long brk_rnd(void) --{ -- /* 8MB for 32bit, 1GB for 64bit */ -- if (is_32bit_task()) -- return (get_random_int() & 0x7ffUL) << PAGE_SHIFT; -- else -- return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT; --} -- --unsigned long arch_randomize_brk(struct mm_struct *mm) --{ -- unsigned long ret = PAGE_ALIGN(mm->brk + brk_rnd()); -- -- if (ret < mm->brk) -- return mm->brk; -- return ret; --} -- --unsigned long randomize_et_dyn(unsigned long base) --{ -- unsigned long ret = PAGE_ALIGN(base + brk_rnd()); -- -- if (!(current->flags & PF_RANDOMIZE)) -- return base; -- if (ret < base) -- return base; -- return ret; --} -diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c -index c59a5ef..3fae59c 100644 ---- a/arch/s390/mm/mmap.c -+++ b/arch/s390/mm/mmap.c -@@ -90,10 +90,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - */ - if (mmap_is_legacy()) { - mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { - mm->mmap_base = mmap_base(); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -@@ -172,10 +184,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - */ - if (mmap_is_legacy()) { - mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = s390_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { - mm->mmap_base = mmap_base(); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = s390_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h -index ae3d59f..f65f075 100644 ---- a/arch/score/include/asm/cache.h -+++ b/arch/score/include/asm/cache.h -@@ -1,7 +1,9 @@ - #ifndef _ASM_SCORE_CACHE_H - #define _ASM_SCORE_CACHE_H - -+#include -+ - #define L1_CACHE_SHIFT 4 --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #endif /* _ASM_SCORE_CACHE_H */ -diff --git a/arch/score/include/asm/exec.h b/arch/score/include/asm/exec.h -index f9f3cd5..58ff438 100644 ---- a/arch/score/include/asm/exec.h -+++ b/arch/score/include/asm/exec.h -@@ -1,6 +1,6 @@ - #ifndef _ASM_SCORE_EXEC_H - #define _ASM_SCORE_EXEC_H - --extern unsigned long arch_align_stack(unsigned long sp); -+#define arch_align_stack(x) (x) - - #endif /* _ASM_SCORE_EXEC_H */ -diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c -index 637970c..0b6556b 100644 ---- a/arch/score/kernel/process.c -+++ b/arch/score/kernel/process.c -@@ -161,8 +161,3 @@ unsigned long get_wchan(struct task_struct *task) - - return task_pt_regs(task)->cp0_epc; - } -- --unsigned long arch_align_stack(unsigned long sp) --{ -- return sp; --} -diff --git a/arch/sh/include/asm/cache.h b/arch/sh/include/asm/cache.h -index ef9e555..331bd29 100644 ---- a/arch/sh/include/asm/cache.h -+++ b/arch/sh/include/asm/cache.h -@@ -9,10 +9,11 @@ - #define __ASM_SH_CACHE_H - #ifdef __KERNEL__ - -+#include - #include - #include - --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define __read_mostly __attribute__((__section__(".data..read_mostly"))) - -diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c -index afeb710..d1d1289 100644 ---- a/arch/sh/mm/mmap.c -+++ b/arch/sh/mm/mmap.c -@@ -74,8 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - -@@ -106,7 +105,7 @@ full_search: - } - return -ENOMEM; - } -- if (likely(!vma || addr + len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* - * Remember the place where we stopped the search: - */ -@@ -157,8 +156,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - -@@ -179,7 +177,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr-len); -- if (!vma || addr <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr - len, len)) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr-len); - } -@@ -188,18 +186,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - if (unlikely(mm->mmap_base < len)) - goto bottomup; - -- addr = mm->mmap_base-len; -- if (do_colour_align) -- addr = COLOUR_ALIGN_DOWN(addr, pgoff); -+ addr = mm->mmap_base - len; - - do { -+ if (do_colour_align) -+ addr = COLOUR_ALIGN_DOWN(addr, pgoff); - /* - * Lookup failure means no vma is above this address, - * else if new region fits below vma->vm_start, - * return with success: - */ - vma = find_vma(mm, addr); -- if (likely(!vma || addr+len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - } -@@ -209,10 +207,8 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = vma->vm_start-len; -- if (do_colour_align) -- addr = COLOUR_ALIGN_DOWN(addr, pgoff); -- } while (likely(len < vma->vm_start)); -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); - - bottomup: - /* -diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h -index ce35a1c..2e7b8f9 100644 ---- a/arch/sparc/include/asm/atomic_64.h -+++ b/arch/sparc/include/asm/atomic_64.h -@@ -14,18 +14,40 @@ - #define ATOMIC64_INIT(i) { (i) } - - #define atomic_read(v) (*(volatile int *)&(v)->counter) -+static inline int atomic_read_unchecked(const atomic_unchecked_t *v) -+{ -+ return v->counter; -+} - #define atomic64_read(v) (*(volatile long *)&(v)->counter) -+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) -+{ -+ return v->counter; -+} - - #define atomic_set(v, i) (((v)->counter) = i) -+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) -+{ -+ v->counter = i; -+} - #define atomic64_set(v, i) (((v)->counter) = i) -+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) -+{ -+ v->counter = i; -+} - - extern void atomic_add(int, atomic_t *); -+extern void atomic_add_unchecked(int, atomic_unchecked_t *); - extern void atomic64_add(long, atomic64_t *); -+extern void atomic64_add_unchecked(long, atomic64_unchecked_t *); - extern void atomic_sub(int, atomic_t *); -+extern void atomic_sub_unchecked(int, atomic_unchecked_t *); - extern void atomic64_sub(long, atomic64_t *); -+extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *); - - extern int atomic_add_ret(int, atomic_t *); -+extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *); - extern long atomic64_add_ret(long, atomic64_t *); -+extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *); - extern int atomic_sub_ret(int, atomic_t *); - extern long atomic64_sub_ret(long, atomic64_t *); - -@@ -33,13 +55,29 @@ extern long atomic64_sub_ret(long, atomic64_t *); - #define atomic64_dec_return(v) atomic64_sub_ret(1, v) - - #define atomic_inc_return(v) atomic_add_ret(1, v) -+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) -+{ -+ return atomic_add_ret_unchecked(1, v); -+} - #define atomic64_inc_return(v) atomic64_add_ret(1, v) -+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) -+{ -+ return atomic64_add_ret_unchecked(1, v); -+} - - #define atomic_sub_return(i, v) atomic_sub_ret(i, v) - #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v) - - #define atomic_add_return(i, v) atomic_add_ret(i, v) -+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) -+{ -+ return atomic_add_ret_unchecked(i, v); -+} - #define atomic64_add_return(i, v) atomic64_add_ret(i, v) -+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) -+{ -+ return atomic64_add_ret_unchecked(i, v); -+} - - /* - * atomic_inc_and_test - increment and test -@@ -50,6 +88,10 @@ extern long atomic64_sub_ret(long, atomic64_t *); - * other cases. - */ - #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) -+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) -+{ -+ return atomic_inc_return_unchecked(v) == 0; -+} - #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) - - #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) -@@ -59,25 +101,60 @@ extern long atomic64_sub_ret(long, atomic64_t *); - #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0) - - #define atomic_inc(v) atomic_add(1, v) -+static inline void atomic_inc_unchecked(atomic_unchecked_t *v) -+{ -+ atomic_add_unchecked(1, v); -+} - #define atomic64_inc(v) atomic64_add(1, v) -+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) -+{ -+ atomic64_add_unchecked(1, v); -+} - - #define atomic_dec(v) atomic_sub(1, v) -+static inline void atomic_dec_unchecked(atomic_unchecked_t *v) -+{ -+ atomic_sub_unchecked(1, v); -+} - #define atomic64_dec(v) atomic64_sub(1, v) -+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) -+{ -+ atomic64_sub_unchecked(1, v); -+} - - #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) - #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) - - #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) -+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) -+{ -+ return cmpxchg(&v->counter, old, new); -+} - #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) -+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) -+{ -+ return xchg(&v->counter, new); -+} - - static inline int __atomic_add_unless(atomic_t *v, int a, int u) - { -- int c, old; -+ int c, old, new; - c = atomic_read(v); - for (;;) { -- if (unlikely(c == (u))) -+ if (unlikely(c == u)) - break; -- old = atomic_cmpxchg((v), c, c + (a)); -+ -+ asm volatile("addcc %2, %0, %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "tvs %%icc, 6\n" -+#endif -+ -+ : "=r" (new) -+ : "0" (c), "ir" (a) -+ : "cc"); -+ -+ old = atomic_cmpxchg(v, c, new); - if (likely(old == c)) - break; - c = old; -@@ -88,20 +165,35 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) - #define atomic64_cmpxchg(v, o, n) \ - ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) - #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) -+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new) -+{ -+ return xchg(&v->counter, new); -+} - - static inline long atomic64_add_unless(atomic64_t *v, long a, long u) - { -- long c, old; -+ long c, old, new; - c = atomic64_read(v); - for (;;) { -- if (unlikely(c == (u))) -+ if (unlikely(c == u)) - break; -- old = atomic64_cmpxchg((v), c, c + (a)); -+ -+ asm volatile("addcc %2, %0, %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "tvs %%xcc, 6\n" -+#endif -+ -+ : "=r" (new) -+ : "0" (c), "ir" (a) -+ : "cc"); -+ -+ old = atomic64_cmpxchg(v, c, new); - if (likely(old == c)) - break; - c = old; - } -- return c != (u); -+ return c != u; - } - - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) -diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h -index 5bb6991..5c2132e 100644 ---- a/arch/sparc/include/asm/cache.h -+++ b/arch/sparc/include/asm/cache.h -@@ -7,10 +7,12 @@ - #ifndef _SPARC_CACHE_H - #define _SPARC_CACHE_H - -+#include -+ - #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long) - - #define L1_CACHE_SHIFT 5 --#define L1_CACHE_BYTES 32 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #ifdef CONFIG_SPARC32 - #define SMP_CACHE_BYTES_SHIFT 5 -diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h -index 2d4d755..81b6662 100644 ---- a/arch/sparc/include/asm/elf_32.h -+++ b/arch/sparc/include/asm/elf_32.h -@@ -114,6 +114,13 @@ typedef struct { - - #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE) - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE 0x10000UL -+ -+#define PAX_DELTA_MMAP_LEN 16 -+#define PAX_DELTA_STACK_LEN 16 -+#endif -+ - /* This yields a mask that user programs can use to figure out what - instruction set this cpu supports. This can NOT be done in userspace - on Sparc. */ -diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h -index 7df8b7f..4946269 100644 ---- a/arch/sparc/include/asm/elf_64.h -+++ b/arch/sparc/include/asm/elf_64.h -@@ -180,6 +180,13 @@ typedef struct { - #define ELF_ET_DYN_BASE 0x0000010000000000UL - #define COMPAT_ELF_ET_DYN_BASE 0x0000000070000000UL - -+#ifdef CONFIG_PAX_ASLR -+#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL) -+ -+#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 14 : 28) -+#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 15 : 29) -+#endif -+ - extern unsigned long sparc64_elf_hwcap; - #define ELF_HWCAP sparc64_elf_hwcap - -diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h -index 9b1c36d..209298b 100644 ---- a/arch/sparc/include/asm/pgalloc_32.h -+++ b/arch/sparc/include/asm/pgalloc_32.h -@@ -33,6 +33,7 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp) - } - - #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) -+#define pgd_populate_kernel(MM, PGD, PMD) pgd_populate((MM), (PGD), (PMD)) - - static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, - unsigned long address) -diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h -index 40b2d7a..22a665b 100644 ---- a/arch/sparc/include/asm/pgalloc_64.h -+++ b/arch/sparc/include/asm/pgalloc_64.h -@@ -26,6 +26,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) - } - - #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) -+#define pud_populate_kernel(MM, PUD, PMD) pud_populate((MM), (PUD), (PMD)) - - static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) - { -diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h -index 6fc1348..390c50a 100644 ---- a/arch/sparc/include/asm/pgtable_32.h -+++ b/arch/sparc/include/asm/pgtable_32.h -@@ -50,6 +50,9 @@ extern unsigned long calc_highpages(void); - #define PAGE_SHARED SRMMU_PAGE_SHARED - #define PAGE_COPY SRMMU_PAGE_COPY - #define PAGE_READONLY SRMMU_PAGE_RDONLY -+#define PAGE_SHARED_NOEXEC SRMMU_PAGE_SHARED_NOEXEC -+#define PAGE_COPY_NOEXEC SRMMU_PAGE_COPY_NOEXEC -+#define PAGE_READONLY_NOEXEC SRMMU_PAGE_RDONLY_NOEXEC - #define PAGE_KERNEL SRMMU_PAGE_KERNEL - - /* Top-level page directory - dummy used by init-mm. -@@ -62,18 +65,18 @@ extern unsigned long ptr_in_current_pgd; - - /* xwr */ - #define __P000 PAGE_NONE --#define __P001 PAGE_READONLY --#define __P010 PAGE_COPY --#define __P011 PAGE_COPY -+#define __P001 PAGE_READONLY_NOEXEC -+#define __P010 PAGE_COPY_NOEXEC -+#define __P011 PAGE_COPY_NOEXEC - #define __P100 PAGE_READONLY - #define __P101 PAGE_READONLY - #define __P110 PAGE_COPY - #define __P111 PAGE_COPY - - #define __S000 PAGE_NONE --#define __S001 PAGE_READONLY --#define __S010 PAGE_SHARED --#define __S011 PAGE_SHARED -+#define __S001 PAGE_READONLY_NOEXEC -+#define __S010 PAGE_SHARED_NOEXEC -+#define __S011 PAGE_SHARED_NOEXEC - #define __S100 PAGE_READONLY - #define __S101 PAGE_READONLY - #define __S110 PAGE_SHARED -diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h -index 79da178..c2eede8 100644 ---- a/arch/sparc/include/asm/pgtsrmmu.h -+++ b/arch/sparc/include/asm/pgtsrmmu.h -@@ -115,6 +115,11 @@ - SRMMU_EXEC | SRMMU_REF) - #define SRMMU_PAGE_RDONLY __pgprot(SRMMU_VALID | SRMMU_CACHE | \ - SRMMU_EXEC | SRMMU_REF) -+ -+#define SRMMU_PAGE_SHARED_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF) -+#define SRMMU_PAGE_COPY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) -+#define SRMMU_PAGE_RDONLY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) -+ - #define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \ - SRMMU_DIRTY | SRMMU_REF) - -diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h -index 9689176..63c18ea 100644 ---- a/arch/sparc/include/asm/spinlock_64.h -+++ b/arch/sparc/include/asm/spinlock_64.h -@@ -92,14 +92,19 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long fla - - /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */ - --static void inline arch_read_lock(arch_rwlock_t *lock) -+static inline void arch_read_lock(arch_rwlock_t *lock) - { - unsigned long tmp1, tmp2; - - __asm__ __volatile__ ( - "1: ldsw [%2], %0\n" - " brlz,pn %0, 2f\n" --"4: add %0, 1, %1\n" -+"4: addcc %0, 1, %1\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" tvs %%icc, 6\n" -+#endif -+ - " cas [%2], %0, %1\n" - " cmp %0, %1\n" - " bne,pn %%icc, 1b\n" -@@ -112,10 +117,10 @@ static void inline arch_read_lock(arch_rwlock_t *lock) - " .previous" - : "=&r" (tmp1), "=&r" (tmp2) - : "r" (lock) -- : "memory"); -+ : "memory", "cc"); - } - --static int inline arch_read_trylock(arch_rwlock_t *lock) -+static inline int arch_read_trylock(arch_rwlock_t *lock) - { - int tmp1, tmp2; - -@@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch_rwlock_t *lock) - "1: ldsw [%2], %0\n" - " brlz,a,pn %0, 2f\n" - " mov 0, %0\n" --" add %0, 1, %1\n" -+" addcc %0, 1, %1\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" tvs %%icc, 6\n" -+#endif -+ - " cas [%2], %0, %1\n" - " cmp %0, %1\n" - " bne,pn %%icc, 1b\n" -@@ -136,13 +146,18 @@ static int inline arch_read_trylock(arch_rwlock_t *lock) - return tmp1; - } - --static void inline arch_read_unlock(arch_rwlock_t *lock) -+static inline void arch_read_unlock(arch_rwlock_t *lock) - { - unsigned long tmp1, tmp2; - - __asm__ __volatile__( - "1: lduw [%2], %0\n" --" sub %0, 1, %1\n" -+" subcc %0, 1, %1\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+" tvs %%icc, 6\n" -+#endif -+ - " cas [%2], %0, %1\n" - " cmp %0, %1\n" - " bne,pn %%xcc, 1b\n" -@@ -152,7 +167,7 @@ static void inline arch_read_unlock(arch_rwlock_t *lock) - : "memory"); - } - --static void inline arch_write_lock(arch_rwlock_t *lock) -+static inline void arch_write_lock(arch_rwlock_t *lock) - { - unsigned long mask, tmp1, tmp2; - -@@ -177,7 +192,7 @@ static void inline arch_write_lock(arch_rwlock_t *lock) - : "memory"); - } - --static void inline arch_write_unlock(arch_rwlock_t *lock) -+static inline void arch_write_unlock(arch_rwlock_t *lock) - { - __asm__ __volatile__( - " stw %%g0, [%0]" -@@ -186,7 +201,7 @@ static void inline arch_write_unlock(arch_rwlock_t *lock) - : "memory"); - } - --static int inline arch_write_trylock(arch_rwlock_t *lock) -+static inline int arch_write_trylock(arch_rwlock_t *lock) - { - unsigned long mask, tmp1, tmp2, result; - -diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h -index e6cd224..3a71793 100644 ---- a/arch/sparc/include/asm/thread_info_32.h -+++ b/arch/sparc/include/asm/thread_info_32.h -@@ -49,6 +49,8 @@ struct thread_info { - unsigned long w_saved; - - struct restart_block restart_block; -+ -+ unsigned long lowest_stack; - }; - - /* -diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h -index cfa8c38..13f30d3 100644 ---- a/arch/sparc/include/asm/thread_info_64.h -+++ b/arch/sparc/include/asm/thread_info_64.h -@@ -63,6 +63,8 @@ struct thread_info { - struct pt_regs *kern_una_regs; - unsigned int kern_una_insn; - -+ unsigned long lowest_stack; -+ - unsigned long fpregs[0] __attribute__ ((aligned(64))); - }; - -@@ -193,10 +195,11 @@ register struct thread_info *current_thread_info_reg asm("g6"); - #define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */ - /* flag bit 6 is available */ - #define TIF_32BIT 7 /* 32-bit binary */ --/* flag bit 8 is available */ -+#define TIF_GRSEC_SETXID 8 /* update credentials on syscall entry/exit */ - #define TIF_SECCOMP 9 /* secure computing */ - #define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */ - #define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */ -+ - /* NOTE: Thread flags >= 12 should be ones we have no interest - * in using in assembly, else we can't use the mask as - * an immediate value in instructions such as andcc. -@@ -215,12 +218,18 @@ register struct thread_info *current_thread_info_reg asm("g6"); - #define _TIF_SYSCALL_AUDIT (1< -+extern void check_object_size(const void *ptr, unsigned long n, bool to); -+#endif -+#endif -+ - #if defined(__sparc__) && defined(__arch64__) - #include - #else -diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h -index 53a28dd..50c38c3 100644 ---- a/arch/sparc/include/asm/uaccess_32.h -+++ b/arch/sparc/include/asm/uaccess_32.h -@@ -250,27 +250,46 @@ extern unsigned long __copy_user(void __user *to, const void __user *from, unsig - - static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) - { -- if (n && __access_ok((unsigned long) to, n)) -+ if ((long)n < 0) -+ return n; -+ -+ if (n && __access_ok((unsigned long) to, n)) { -+ if (!__builtin_constant_p(n)) -+ check_object_size(from, n, true); - return __copy_user(to, (__force void __user *) from, n); -- else -+ } else - return n; - } - - static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ -+ if (!__builtin_constant_p(n)) -+ check_object_size(from, n, true); -+ - return __copy_user(to, (__force void __user *) from, n); - } - - static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) - { -- if (n && __access_ok((unsigned long) from, n)) -+ if ((long)n < 0) -+ return n; -+ -+ if (n && __access_ok((unsigned long) from, n)) { -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); - return __copy_user((__force void __user *) to, from, n); -- else -+ } else - return n; - } - - static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - return __copy_user((__force void __user *) to, from, n); - } - -diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h -index 7c831d8..d440ca7 100644 ---- a/arch/sparc/include/asm/uaccess_64.h -+++ b/arch/sparc/include/asm/uaccess_64.h -@@ -10,6 +10,7 @@ - #include - #include - #include -+#include - #include - #include - #include -@@ -214,8 +215,15 @@ extern unsigned long copy_from_user_fixup(void *to, const void __user *from, - static inline unsigned long __must_check - copy_from_user(void *to, const void __user *from, unsigned long size) - { -- unsigned long ret = ___copy_from_user(to, from, size); -+ unsigned long ret; - -+ if ((long)size < 0 || size > INT_MAX) -+ return size; -+ -+ if (!__builtin_constant_p(size)) -+ check_object_size(to, size, false); -+ -+ ret = ___copy_from_user(to, from, size); - if (unlikely(ret)) - ret = copy_from_user_fixup(to, from, size); - -@@ -231,8 +239,15 @@ extern unsigned long copy_to_user_fixup(void __user *to, const void *from, - static inline unsigned long __must_check - copy_to_user(void __user *to, const void *from, unsigned long size) - { -- unsigned long ret = ___copy_to_user(to, from, size); -+ unsigned long ret; -+ -+ if ((long)size < 0 || size > INT_MAX) -+ return size; -+ -+ if (!__builtin_constant_p(size)) -+ check_object_size(from, size, true); - -+ ret = ___copy_to_user(to, from, size); - if (unlikely(ret)) - ret = copy_to_user_fixup(to, from, size); - return ret; -diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile -index 6cf591b..b49e65a 100644 ---- a/arch/sparc/kernel/Makefile -+++ b/arch/sparc/kernel/Makefile -@@ -3,7 +3,7 @@ - # - - asflags-y := -ansi --ccflags-y := -Werror -+#ccflags-y := -Werror - - extra-y := head_$(BITS).o - -diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c -index f8b6eee..87f60ee 100644 ---- a/arch/sparc/kernel/leon_kernel.c -+++ b/arch/sparc/kernel/leon_kernel.c -@@ -56,11 +56,13 @@ static inline unsigned int leon_eirq_get(int cpu) - static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc) - { - unsigned int eirq; -+ struct irq_bucket *p; - int cpu = sparc_leon3_cpuid(); - - eirq = leon_eirq_get(cpu); -- if ((eirq & 0x10) && irq_map[eirq]->irq) /* bit4 tells if IRQ happened */ -- generic_handle_irq(irq_map[eirq]->irq); -+ p = irq_map[eirq]; -+ if ((eirq & 0x10) && p && p->irq) /* bit4 tells if IRQ happened */ -+ generic_handle_irq(p->irq); - } - - /* The extended IRQ controller has been found, this function registers it */ -diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c -index 14006d8..8146238 100644 ---- a/arch/sparc/kernel/process_32.c -+++ b/arch/sparc/kernel/process_32.c -@@ -126,14 +126,14 @@ void show_regs(struct pt_regs *r) - - printk("PSR: %08lx PC: %08lx NPC: %08lx Y: %08lx %s\n", - r->psr, r->pc, r->npc, r->y, print_tainted()); -- printk("PC: <%pS>\n", (void *) r->pc); -+ printk("PC: <%pA>\n", (void *) r->pc); - printk("%%G: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - r->u_regs[0], r->u_regs[1], r->u_regs[2], r->u_regs[3], - r->u_regs[4], r->u_regs[5], r->u_regs[6], r->u_regs[7]); - printk("%%O: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - r->u_regs[8], r->u_regs[9], r->u_regs[10], r->u_regs[11], - r->u_regs[12], r->u_regs[13], r->u_regs[14], r->u_regs[15]); -- printk("RPC: <%pS>\n", (void *) r->u_regs[15]); -+ printk("RPC: <%pA>\n", (void *) r->u_regs[15]); - - printk("%%L: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - rw->locals[0], rw->locals[1], rw->locals[2], rw->locals[3], -@@ -168,7 +168,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp) - rw = (struct reg_window32 *) fp; - pc = rw->ins[7]; - printk("[%08lx : ", pc); -- printk("%pS ] ", (void *) pc); -+ printk("%pA ] ", (void *) pc); - fp = rw->ins[6]; - } while (++count < 16); - printk("\n"); -diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c -index aff0c72..9067b39 100644 ---- a/arch/sparc/kernel/process_64.c -+++ b/arch/sparc/kernel/process_64.c -@@ -179,14 +179,14 @@ static void show_regwindow(struct pt_regs *regs) - printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n", - rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]); - if (regs->tstate & TSTATE_PRIV) -- printk("I7: <%pS>\n", (void *) rwk->ins[7]); -+ printk("I7: <%pA>\n", (void *) rwk->ins[7]); - } - - void show_regs(struct pt_regs *regs) - { - printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x %s\n", regs->tstate, - regs->tpc, regs->tnpc, regs->y, print_tainted()); -- printk("TPC: <%pS>\n", (void *) regs->tpc); -+ printk("TPC: <%pA>\n", (void *) regs->tpc); - printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n", - regs->u_regs[0], regs->u_regs[1], regs->u_regs[2], - regs->u_regs[3]); -@@ -199,7 +199,7 @@ void show_regs(struct pt_regs *regs) - printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n", - regs->u_regs[12], regs->u_regs[13], regs->u_regs[14], - regs->u_regs[15]); -- printk("RPC: <%pS>\n", (void *) regs->u_regs[15]); -+ printk("RPC: <%pA>\n", (void *) regs->u_regs[15]); - show_regwindow(regs); - show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]); - } -@@ -284,7 +284,7 @@ void arch_trigger_all_cpu_backtrace(void) - ((tp && tp->task) ? tp->task->pid : -1)); - - if (gp->tstate & TSTATE_PRIV) { -- printk(" TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n", -+ printk(" TPC[%pA] O7[%pA] I7[%pA] RPC[%pA]\n", - (void *) gp->tpc, - (void *) gp->o7, - (void *) gp->i7, -diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c -index 484daba..0674139 100644 ---- a/arch/sparc/kernel/ptrace_64.c -+++ b/arch/sparc/kernel/ptrace_64.c -@@ -1057,6 +1057,10 @@ long arch_ptrace(struct task_struct *child, long request, - return ret; - } - -+#ifdef CONFIG_GRKERNSEC_SETXID -+extern void gr_delayed_cred_worker(void); -+#endif -+ - asmlinkage int syscall_trace_enter(struct pt_regs *regs) - { - int ret = 0; -@@ -1064,6 +1068,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) - /* do the secure computing check first */ - secure_computing_strict(regs->u_regs[UREG_G1]); - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - if (test_thread_flag(TIF_SYSCALL_TRACE)) - ret = tracehook_report_syscall_entry(regs); - -@@ -1084,6 +1093,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) - - asmlinkage void syscall_trace_leave(struct pt_regs *regs) - { -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - audit_syscall_exit(regs); - - if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) -diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c -index 0c9b31b..7cb7aee 100644 ---- a/arch/sparc/kernel/sys_sparc_32.c -+++ b/arch/sparc/kernel/sys_sparc_32.c -@@ -54,7 +54,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - if (len > TASK_SIZE - PAGE_SIZE) - return -ENOMEM; - if (!addr) -- addr = TASK_UNMAPPED_BASE; -+ addr = current->mm->mmap_base; - - if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); -@@ -65,7 +65,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - /* At this point: (!vmm || addr < vmm->vm_end). */ - if (TASK_SIZE - PAGE_SIZE - len < addr) - return -ENOMEM; -- if (!vmm || addr + len <= vmm->vm_start) -+ if (check_heap_stack_gap(vmm, addr, len)) - return addr; - addr = vmm->vm_end; - if (flags & MAP_SHARED) -diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c -index 11c6c96..3ec33e8 100644 ---- a/arch/sparc/kernel/sys_sparc_64.c -+++ b/arch/sparc/kernel/sys_sparc_64.c -@@ -107,7 +107,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - /* We do not accept a shared mapping if it would violate - * cache aliasing constraints. - */ -- if ((flags & MAP_SHARED) && -+ if ((filp || (flags & MAP_SHARED)) && - ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) - return -EINVAL; - return addr; -@@ -122,6 +122,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - if (filp || (flags & MAP_SHARED)) - do_color_align = 1; - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - if (addr) { - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); -@@ -129,15 +133,14 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (task_size - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - - if (len > mm->cached_hole_size) { -- start_addr = addr = mm->free_area_cache; -+ start_addr = addr = mm->free_area_cache; - } else { -- start_addr = addr = TASK_UNMAPPED_BASE; -+ start_addr = addr = mm->mmap_base; - mm->cached_hole_size = 0; - } - -@@ -157,14 +160,14 @@ full_search: - vma = find_vma(mm, VA_EXCLUDE_END); - } - if (unlikely(task_size < addr)) { -- if (start_addr != TASK_UNMAPPED_BASE) { -- start_addr = addr = TASK_UNMAPPED_BASE; -+ if (start_addr != mm->mmap_base) { -+ start_addr = addr = mm->mmap_base; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } -- if (likely(!vma || addr + len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* - * Remember the place where we stopped the search: - */ -@@ -198,7 +201,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - /* We do not accept a shared mapping if it would violate - * cache aliasing constraints. - */ -- if ((flags & MAP_SHARED) && -+ if ((filp || (flags & MAP_SHARED)) && - ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) - return -EINVAL; - return addr; -@@ -219,8 +222,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); -- if (task_size - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - -@@ -241,7 +243,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr-len); -- if (!vma || addr <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr - len, len)) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr-len); - } -@@ -250,18 +252,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - if (unlikely(mm->mmap_base < len)) - goto bottomup; - -- addr = mm->mmap_base-len; -- if (do_color_align) -- addr = COLOUR_ALIGN_DOWN(addr, pgoff); -+ addr = mm->mmap_base - len; - - do { -+ if (do_color_align) -+ addr = COLOUR_ALIGN_DOWN(addr, pgoff); - /* - * Lookup failure means no vma is above this address, - * else if new region fits below vma->vm_start, - * return with success: - */ - vma = find_vma(mm, addr); -- if (likely(!vma || addr+len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - } -@@ -271,10 +273,8 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = vma->vm_start-len; -- if (do_color_align) -- addr = COLOUR_ALIGN_DOWN(addr, pgoff); -- } while (likely(len < vma->vm_start)); -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); - - bottomup: - /* -@@ -373,6 +373,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - gap == RLIM_INFINITY || - sysctl_legacy_va_layout) { - mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { -@@ -385,6 +391,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm) - gap = (task_size / 6 * 5); - - mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S -index 7f5f65d..3308382 100644 ---- a/arch/sparc/kernel/syscalls.S -+++ b/arch/sparc/kernel/syscalls.S -@@ -62,7 +62,7 @@ sys32_rt_sigreturn: - #endif - .align 32 - 1: ldx [%g6 + TI_FLAGS], %l5 -- andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 -+ andcc %l5, _TIF_WORK_SYSCALL, %g0 - be,pt %icc, rtrap - nop - call syscall_trace_leave -@@ -179,7 +179,7 @@ linux_sparc_syscall32: - - srl %i5, 0, %o5 ! IEU1 - srl %i2, 0, %o2 ! IEU0 Group -- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 -+ andcc %l0, _TIF_WORK_SYSCALL, %g0 - bne,pn %icc, linux_syscall_trace32 ! CTI - mov %i0, %l5 ! IEU1 - call %l7 ! CTI Group brk forced -@@ -202,7 +202,7 @@ linux_sparc_syscall: - - mov %i3, %o3 ! IEU1 - mov %i4, %o4 ! IEU0 Group -- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 -+ andcc %l0, _TIF_WORK_SYSCALL, %g0 - bne,pn %icc, linux_syscall_trace ! CTI Group - mov %i0, %l5 ! IEU0 - 2: call %l7 ! CTI Group brk forced -@@ -218,7 +218,7 @@ ret_sys_call: - - cmp %o0, -ERESTART_RESTARTBLOCK - bgeu,pn %xcc, 1f -- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 -+ andcc %l0, _TIF_WORK_SYSCALL, %g0 - ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc - - 2: -diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c -index a5785ea..405c5f7 100644 ---- a/arch/sparc/kernel/traps_32.c -+++ b/arch/sparc/kernel/traps_32.c -@@ -44,6 +44,8 @@ static void instruction_dump(unsigned long *pc) - #define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t") - #define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t") - -+extern void gr_handle_kernel_exploit(void); -+ - void die_if_kernel(char *str, struct pt_regs *regs) - { - static int die_counter; -@@ -76,15 +78,17 @@ void die_if_kernel(char *str, struct pt_regs *regs) - count++ < 30 && - (((unsigned long) rw) >= PAGE_OFFSET) && - !(((unsigned long) rw) & 0x7)) { -- printk("Caller[%08lx]: %pS\n", rw->ins[7], -+ printk("Caller[%08lx]: %pA\n", rw->ins[7], - (void *) rw->ins[7]); - rw = (struct reg_window32 *)rw->ins[6]; - } - } - printk("Instruction DUMP:"); - instruction_dump ((unsigned long *) regs->pc); -- if(regs->psr & PSR_PS) -+ if(regs->psr & PSR_PS) { -+ gr_handle_kernel_exploit(); - do_exit(SIGKILL); -+ } - do_exit(SIGSEGV); - } - -diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c -index 3b05e66..6ea2917 100644 ---- a/arch/sparc/kernel/traps_64.c -+++ b/arch/sparc/kernel/traps_64.c -@@ -75,7 +75,7 @@ static void dump_tl1_traplog(struct tl1_traplog *p) - i + 1, - p->trapstack[i].tstate, p->trapstack[i].tpc, - p->trapstack[i].tnpc, p->trapstack[i].tt); -- printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc); -+ printk("TRAPLOG: TPC<%pA>\n", (void *) p->trapstack[i].tpc); - } - } - -@@ -95,6 +95,12 @@ void bad_trap(struct pt_regs *regs, long lvl) - - lvl -= 0x100; - if (regs->tstate & TSTATE_PRIV) { -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ if (lvl == 6) -+ pax_report_refcount_overflow(regs); -+#endif -+ - sprintf(buffer, "Kernel bad sw trap %lx", lvl); - die_if_kernel(buffer, regs); - } -@@ -113,11 +119,16 @@ void bad_trap(struct pt_regs *regs, long lvl) - void bad_trap_tl1(struct pt_regs *regs, long lvl) - { - char buffer[32]; -- -+ - if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs, - 0, lvl, SIGTRAP) == NOTIFY_STOP) - return; - -+#ifdef CONFIG_PAX_REFCOUNT -+ if (lvl == 6) -+ pax_report_refcount_overflow(regs); -+#endif -+ - dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); - - sprintf (buffer, "Bad trap %lx at tl>0", lvl); -@@ -1141,7 +1152,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in - regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate); - printk("%s" "ERROR(%d): ", - (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id()); -- printk("TPC<%pS>\n", (void *) regs->tpc); -+ printk("TPC<%pA>\n", (void *) regs->tpc); - printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n", - (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), - (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT, -@@ -1748,7 +1759,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs) - smp_processor_id(), - (type & 0x1) ? 'I' : 'D', - regs->tpc); -- printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc); -+ printk(KERN_EMERG "TPC<%pA>\n", (void *) regs->tpc); - panic("Irrecoverable Cheetah+ parity error."); - } - -@@ -1756,7 +1767,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs) - smp_processor_id(), - (type & 0x1) ? 'I' : 'D', - regs->tpc); -- printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc); -+ printk(KERN_WARNING "TPC<%pA>\n", (void *) regs->tpc); - } - - struct sun4v_error_entry { -@@ -1963,9 +1974,9 @@ void sun4v_itlb_error_report(struct pt_regs *regs, int tl) - - printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n", - regs->tpc, tl); -- printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc); -+ printk(KERN_EMERG "SUN4V-ITLB: TPC<%pA>\n", (void *) regs->tpc); - printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]); -- printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n", -+ printk(KERN_EMERG "SUN4V-ITLB: O7<%pA>\n", - (void *) regs->u_regs[UREG_I7]); - printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] " - "pte[%lx] error[%lx]\n", -@@ -1987,9 +1998,9 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl) - - printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n", - regs->tpc, tl); -- printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc); -+ printk(KERN_EMERG "SUN4V-DTLB: TPC<%pA>\n", (void *) regs->tpc); - printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]); -- printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n", -+ printk(KERN_EMERG "SUN4V-DTLB: O7<%pA>\n", - (void *) regs->u_regs[UREG_I7]); - printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] " - "pte[%lx] error[%lx]\n", -@@ -2195,13 +2206,13 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp) - fp = (unsigned long)sf->fp + STACK_BIAS; - } - -- printk(" [%016lx] %pS\n", pc, (void *) pc); -+ printk(" [%016lx] %pA\n", pc, (void *) pc); - #ifdef CONFIG_FUNCTION_GRAPH_TRACER - if ((pc + 8UL) == (unsigned long) &return_to_handler) { - int index = tsk->curr_ret_stack; - if (tsk->ret_stack && index >= graph) { - pc = tsk->ret_stack[index - graph].ret; -- printk(" [%016lx] %pS\n", pc, (void *) pc); -+ printk(" [%016lx] %pA\n", pc, (void *) pc); - graph++; - } - } -@@ -2226,6 +2237,8 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw) - return (struct reg_window *) (fp + STACK_BIAS); - } - -+extern void gr_handle_kernel_exploit(void); -+ - void die_if_kernel(char *str, struct pt_regs *regs) - { - static int die_counter; -@@ -2254,7 +2267,7 @@ void die_if_kernel(char *str, struct pt_regs *regs) - while (rw && - count++ < 30 && - kstack_valid(tp, (unsigned long) rw)) { -- printk("Caller[%016lx]: %pS\n", rw->ins[7], -+ printk("Caller[%016lx]: %pA\n", rw->ins[7], - (void *) rw->ins[7]); - - rw = kernel_stack_up(rw); -@@ -2267,8 +2280,10 @@ void die_if_kernel(char *str, struct pt_regs *regs) - } - user_instruction_dump ((unsigned int __user *) regs->tpc); - } -- if (regs->tstate & TSTATE_PRIV) -+ if (regs->tstate & TSTATE_PRIV) { -+ gr_handle_kernel_exploit(); - do_exit(SIGKILL); -+ } - do_exit(SIGSEGV); - } - EXPORT_SYMBOL(die_if_kernel); -diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c -index f81d038..e7a4680 100644 ---- a/arch/sparc/kernel/unaligned_64.c -+++ b/arch/sparc/kernel/unaligned_64.c -@@ -278,7 +278,7 @@ static void log_unaligned(struct pt_regs *regs) - static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5); - - if (__ratelimit(&ratelimit)) { -- printk("Kernel unaligned access at TPC[%lx] %pS\n", -+ printk("Kernel unaligned access at TPC[%lx] %pA\n", - regs->tpc, (void *) regs->tpc); - } - } -diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile -index dff4096..bd9a388 100644 ---- a/arch/sparc/lib/Makefile -+++ b/arch/sparc/lib/Makefile -@@ -2,7 +2,7 @@ - # - - asflags-y := -ansi -DST_DIV0=0x02 --ccflags-y := -Werror -+#ccflags-y := -Werror - - lib-$(CONFIG_SPARC32) += ashrdi3.o - lib-$(CONFIG_SPARC32) += memcpy.o memset.o -diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S -index 4d502da..527c48d 100644 ---- a/arch/sparc/lib/atomic_64.S -+++ b/arch/sparc/lib/atomic_64.S -@@ -17,7 +17,12 @@ - ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: lduw [%o1], %g1 -- add %g1, %o0, %g7 -+ addcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %icc, 6 -+#endif -+ - cas [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %icc, BACKOFF_LABEL(2f, 1b) -@@ -27,10 +32,28 @@ ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic_add) - -+ENTRY(atomic_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: lduw [%o1], %g1 -+ add %g1, %o0, %g7 -+ cas [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %icc, 2f -+ nop -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic_add_unchecked) -+ - ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: lduw [%o1], %g1 -- sub %g1, %o0, %g7 -+ subcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %icc, 6 -+#endif -+ - cas [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %icc, BACKOFF_LABEL(2f, 1b) -@@ -40,10 +63,28 @@ ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic_sub) - -+ENTRY(atomic_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: lduw [%o1], %g1 -+ sub %g1, %o0, %g7 -+ cas [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %icc, 2f -+ nop -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic_sub_unchecked) -+ - ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: lduw [%o1], %g1 -- add %g1, %o0, %g7 -+ addcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %icc, 6 -+#endif -+ - cas [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %icc, BACKOFF_LABEL(2f, 1b) -@@ -53,10 +94,29 @@ ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic_add_ret) - -+ENTRY(atomic_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: lduw [%o1], %g1 -+ addcc %g1, %o0, %g7 -+ cas [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %icc, 2f -+ add %g7, %o0, %g7 -+ sra %g7, 0, %o0 -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic_add_ret_unchecked) -+ - ENTRY(atomic_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: lduw [%o1], %g1 -- sub %g1, %o0, %g7 -+ subcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %icc, 6 -+#endif -+ - cas [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %icc, BACKOFF_LABEL(2f, 1b) -@@ -69,7 +129,12 @@ ENDPROC(atomic_sub_ret) - ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: ldx [%o1], %g1 -- add %g1, %o0, %g7 -+ addcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %xcc, 6 -+#endif -+ - casx [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %xcc, BACKOFF_LABEL(2f, 1b) -@@ -79,10 +144,28 @@ ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic64_add) - -+ENTRY(atomic64_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: ldx [%o1], %g1 -+ addcc %g1, %o0, %g7 -+ casx [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %xcc, 2f -+ nop -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic64_add_unchecked) -+ - ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: ldx [%o1], %g1 -- sub %g1, %o0, %g7 -+ subcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %xcc, 6 -+#endif -+ - casx [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %xcc, BACKOFF_LABEL(2f, 1b) -@@ -92,10 +175,28 @@ ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic64_sub) - -+ENTRY(atomic64_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: ldx [%o1], %g1 -+ subcc %g1, %o0, %g7 -+ casx [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %xcc, 2f -+ nop -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic64_sub_unchecked) -+ - ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: ldx [%o1], %g1 -- add %g1, %o0, %g7 -+ addcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %xcc, 6 -+#endif -+ - casx [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %xcc, BACKOFF_LABEL(2f, 1b) -@@ -105,10 +206,29 @@ ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */ - 2: BACKOFF_SPIN(%o2, %o3, 1b) - ENDPROC(atomic64_add_ret) - -+ENTRY(atomic64_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */ -+ BACKOFF_SETUP(%o2) -+1: ldx [%o1], %g1 -+ addcc %g1, %o0, %g7 -+ casx [%o1], %g1, %g7 -+ cmp %g1, %g7 -+ bne,pn %xcc, 2f -+ add %g7, %o0, %g7 -+ mov %g7, %o0 -+ retl -+ nop -+2: BACKOFF_SPIN(%o2, %o3, 1b) -+ENDPROC(atomic64_add_ret_unchecked) -+ - ENTRY(atomic64_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */ - BACKOFF_SETUP(%o2) - 1: ldx [%o1], %g1 -- sub %g1, %o0, %g7 -+ subcc %g1, %o0, %g7 -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ tvs %xcc, 6 -+#endif -+ - casx [%o1], %g1, %g7 - cmp %g1, %g7 - bne,pn %xcc, BACKOFF_LABEL(2f, 1b) -diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c -index 3b31218..345c609 100644 ---- a/arch/sparc/lib/ksyms.c -+++ b/arch/sparc/lib/ksyms.c -@@ -109,12 +109,18 @@ EXPORT_SYMBOL(__downgrade_write); - - /* Atomic counter implementation. */ - EXPORT_SYMBOL(atomic_add); -+EXPORT_SYMBOL(atomic_add_unchecked); - EXPORT_SYMBOL(atomic_add_ret); -+EXPORT_SYMBOL(atomic_add_ret_unchecked); - EXPORT_SYMBOL(atomic_sub); -+EXPORT_SYMBOL(atomic_sub_unchecked); - EXPORT_SYMBOL(atomic_sub_ret); - EXPORT_SYMBOL(atomic64_add); -+EXPORT_SYMBOL(atomic64_add_unchecked); - EXPORT_SYMBOL(atomic64_add_ret); -+EXPORT_SYMBOL(atomic64_add_ret_unchecked); - EXPORT_SYMBOL(atomic64_sub); -+EXPORT_SYMBOL(atomic64_sub_unchecked); - EXPORT_SYMBOL(atomic64_sub_ret); - - /* Atomic bit operations. */ -diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile -index 30c3ecc..736f015 100644 ---- a/arch/sparc/mm/Makefile -+++ b/arch/sparc/mm/Makefile -@@ -2,7 +2,7 @@ - # - - asflags-y := -ansi --ccflags-y := -Werror -+#ccflags-y := -Werror - - obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o gup.o - obj-y += fault_$(BITS).o -diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c -index 77ac917..baf45db 100644 ---- a/arch/sparc/mm/fault_32.c -+++ b/arch/sparc/mm/fault_32.c -@@ -21,6 +21,9 @@ - #include - #include - #include -+#include -+#include -+#include - - #include - #include -@@ -159,6 +162,277 @@ static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault) - return safe_compute_effective_address(regs, insn); - } - -+#ifdef CONFIG_PAX_PAGEEXEC -+#ifdef CONFIG_PAX_DLRESOLVE -+static void pax_emuplt_close(struct vm_area_struct *vma) -+{ -+ vma->vm_mm->call_dl_resolve = 0UL; -+} -+ -+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) -+{ -+ unsigned int *kaddr; -+ -+ vmf->page = alloc_page(GFP_HIGHUSER); -+ if (!vmf->page) -+ return VM_FAULT_OOM; -+ -+ kaddr = kmap(vmf->page); -+ memset(kaddr, 0, PAGE_SIZE); -+ kaddr[0] = 0x9DE3BFA8U; /* save */ -+ flush_dcache_page(vmf->page); -+ kunmap(vmf->page); -+ return VM_FAULT_MAJOR; -+} -+ -+static const struct vm_operations_struct pax_vm_ops = { -+ .close = pax_emuplt_close, -+ .fault = pax_emuplt_fault -+}; -+ -+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) -+{ -+ int ret; -+ -+ INIT_LIST_HEAD(&vma->anon_vma_chain); -+ vma->vm_mm = current->mm; -+ vma->vm_start = addr; -+ vma->vm_end = addr + PAGE_SIZE; -+ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; -+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); -+ vma->vm_ops = &pax_vm_ops; -+ -+ ret = insert_vm_struct(current->mm, vma); -+ if (ret) -+ return ret; -+ -+ ++current->mm->total_vm; -+ return 0; -+} -+#endif -+ -+/* -+ * PaX: decide what to do with offenders (regs->pc = fault address) -+ * -+ * returns 1 when task should be killed -+ * 2 when patched PLT trampoline was detected -+ * 3 when unpatched PLT trampoline was detected -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ -+#ifdef CONFIG_PAX_EMUPLT -+ int err; -+ -+ do { /* PaX: patched PLT emulation #1 */ -+ unsigned int sethi1, sethi2, jmpl; -+ -+ err = get_user(sethi1, (unsigned int *)regs->pc); -+ err |= get_user(sethi2, (unsigned int *)(regs->pc+4)); -+ err |= get_user(jmpl, (unsigned int *)(regs->pc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi1 & 0xFFC00000U) == 0x03000000U && -+ (sethi2 & 0xFFC00000U) == 0x03000000U && -+ (jmpl & 0xFFFFE000U) == 0x81C06000U) -+ { -+ unsigned int addr; -+ -+ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; -+ addr = regs->u_regs[UREG_G1]; -+ addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); -+ regs->pc = addr; -+ regs->npc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #2 */ -+ unsigned int ba; -+ -+ err = get_user(ba, (unsigned int *)regs->pc); -+ -+ if (err) -+ break; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) { -+ unsigned int addr; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U) -+ addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); -+ else -+ addr = regs->pc + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); -+ regs->pc = addr; -+ regs->npc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #3 */ -+ unsigned int sethi, bajmpl, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->pc); -+ err |= get_user(bajmpl, (unsigned int *)(regs->pc+4)); -+ err |= get_user(nop, (unsigned int *)(regs->pc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) && -+ nop == 0x01000000U) -+ { -+ unsigned int addr; -+ -+ addr = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G1] = addr; -+ if ((bajmpl & 0xFFFFE000U) == 0x81C06000U) -+ addr += (((bajmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); -+ else -+ addr = regs->pc + ((((bajmpl | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); -+ regs->pc = addr; -+ regs->npc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: unpatched PLT emulation step 1 */ -+ unsigned int sethi, ba, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->pc); -+ err |= get_user(ba, (unsigned int *)(regs->pc+4)); -+ err |= get_user(nop, (unsigned int *)(regs->pc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && -+ nop == 0x01000000U) -+ { -+ unsigned int addr, save, call; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U) -+ addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); -+ else -+ addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); -+ -+ err = get_user(save, (unsigned int *)addr); -+ err |= get_user(call, (unsigned int *)(addr+4)); -+ err |= get_user(nop, (unsigned int *)(addr+8)); -+ if (err) -+ break; -+ -+#ifdef CONFIG_PAX_DLRESOLVE -+ if (save == 0x9DE3BFA8U && -+ (call & 0xC0000000U) == 0x40000000U && -+ nop == 0x01000000U) -+ { -+ struct vm_area_struct *vma; -+ unsigned long call_dl_resolve; -+ -+ down_read(¤t->mm->mmap_sem); -+ call_dl_resolve = current->mm->call_dl_resolve; -+ up_read(¤t->mm->mmap_sem); -+ if (likely(call_dl_resolve)) -+ goto emulate; -+ -+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); -+ -+ down_write(¤t->mm->mmap_sem); -+ if (current->mm->call_dl_resolve) { -+ call_dl_resolve = current->mm->call_dl_resolve; -+ up_write(¤t->mm->mmap_sem); -+ if (vma) -+ kmem_cache_free(vm_area_cachep, vma); -+ goto emulate; -+ } -+ -+ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); -+ if (!vma || (call_dl_resolve & ~PAGE_MASK)) { -+ up_write(¤t->mm->mmap_sem); -+ if (vma) -+ kmem_cache_free(vm_area_cachep, vma); -+ return 1; -+ } -+ -+ if (pax_insert_vma(vma, call_dl_resolve)) { -+ up_write(¤t->mm->mmap_sem); -+ kmem_cache_free(vm_area_cachep, vma); -+ return 1; -+ } -+ -+ current->mm->call_dl_resolve = call_dl_resolve; -+ up_write(¤t->mm->mmap_sem); -+ -+emulate: -+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; -+ regs->pc = call_dl_resolve; -+ regs->npc = addr+4; -+ return 3; -+ } -+#endif -+ -+ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ -+ if ((save & 0xFFC00000U) == 0x05000000U && -+ (call & 0xFFFFE000U) == 0x85C0A000U && -+ nop == 0x01000000U) -+ { -+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G2] = addr + 4; -+ addr = (save & 0x003FFFFFU) << 10; -+ addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); -+ regs->pc = addr; -+ regs->npc = addr+4; -+ return 3; -+ } -+ } -+ } while (0); -+ -+ do { /* PaX: unpatched PLT emulation step 2 */ -+ unsigned int save, call, nop; -+ -+ err = get_user(save, (unsigned int *)(regs->pc-4)); -+ err |= get_user(call, (unsigned int *)regs->pc); -+ err |= get_user(nop, (unsigned int *)(regs->pc+4)); -+ if (err) -+ break; -+ -+ if (save == 0x9DE3BFA8U && -+ (call & 0xC0000000U) == 0x40000000U && -+ nop == 0x01000000U) -+ { -+ unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2); -+ -+ regs->u_regs[UREG_RETPC] = regs->pc; -+ regs->pc = dl_resolve; -+ regs->npc = dl_resolve+4; -+ return 3; -+ } -+ } while (0); -+#endif -+ -+ return 1; -+} -+ -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 8; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs, - int text_fault) - { -@@ -230,6 +504,24 @@ good_area: - if (!(vma->vm_flags & VM_WRITE)) - goto bad_area; - } else { -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) { -+ up_read(&mm->mmap_sem); -+ switch (pax_handle_fetch_fault(regs)) { -+ -+#ifdef CONFIG_PAX_EMUPLT -+ case 2: -+ case 3: -+ return; -+#endif -+ -+ } -+ pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - /* Allow reads even for write-only mappings */ - if (!(vma->vm_flags & (VM_READ | VM_EXEC))) - goto bad_area; -diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c -index 1fe0429..8dd5dd5 100644 ---- a/arch/sparc/mm/fault_64.c -+++ b/arch/sparc/mm/fault_64.c -@@ -21,6 +21,9 @@ - #include - #include - #include -+#include -+#include -+#include - - #include - #include -@@ -74,7 +77,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr) - printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n", - regs->tpc); - printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]); -- printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]); -+ printk("OOPS: RPC <%pA>\n", (void *) regs->u_regs[15]); - printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr); - dump_stack(); - unhandled_fault(regs->tpc, current, regs); -@@ -272,6 +275,466 @@ static void noinline __kprobes bogus_32bit_fault_address(struct pt_regs *regs, - show_regs(regs); - } - -+#ifdef CONFIG_PAX_PAGEEXEC -+#ifdef CONFIG_PAX_DLRESOLVE -+static void pax_emuplt_close(struct vm_area_struct *vma) -+{ -+ vma->vm_mm->call_dl_resolve = 0UL; -+} -+ -+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) -+{ -+ unsigned int *kaddr; -+ -+ vmf->page = alloc_page(GFP_HIGHUSER); -+ if (!vmf->page) -+ return VM_FAULT_OOM; -+ -+ kaddr = kmap(vmf->page); -+ memset(kaddr, 0, PAGE_SIZE); -+ kaddr[0] = 0x9DE3BFA8U; /* save */ -+ flush_dcache_page(vmf->page); -+ kunmap(vmf->page); -+ return VM_FAULT_MAJOR; -+} -+ -+static const struct vm_operations_struct pax_vm_ops = { -+ .close = pax_emuplt_close, -+ .fault = pax_emuplt_fault -+}; -+ -+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) -+{ -+ int ret; -+ -+ INIT_LIST_HEAD(&vma->anon_vma_chain); -+ vma->vm_mm = current->mm; -+ vma->vm_start = addr; -+ vma->vm_end = addr + PAGE_SIZE; -+ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; -+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); -+ vma->vm_ops = &pax_vm_ops; -+ -+ ret = insert_vm_struct(current->mm, vma); -+ if (ret) -+ return ret; -+ -+ ++current->mm->total_vm; -+ return 0; -+} -+#endif -+ -+/* -+ * PaX: decide what to do with offenders (regs->tpc = fault address) -+ * -+ * returns 1 when task should be killed -+ * 2 when patched PLT trampoline was detected -+ * 3 when unpatched PLT trampoline was detected -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ -+#ifdef CONFIG_PAX_EMUPLT -+ int err; -+ -+ do { /* PaX: patched PLT emulation #1 */ -+ unsigned int sethi1, sethi2, jmpl; -+ -+ err = get_user(sethi1, (unsigned int *)regs->tpc); -+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi1 & 0xFFC00000U) == 0x03000000U && -+ (sethi2 & 0xFFC00000U) == 0x03000000U && -+ (jmpl & 0xFFFFE000U) == 0x81C06000U) -+ { -+ unsigned long addr; -+ -+ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; -+ addr = regs->u_regs[UREG_G1]; -+ addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #2 */ -+ unsigned int ba; -+ -+ err = get_user(ba, (unsigned int *)regs->tpc); -+ -+ if (err) -+ break; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) { -+ unsigned long addr; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U) -+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); -+ else -+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #3 */ -+ unsigned int sethi, bajmpl, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(bajmpl, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) && -+ nop == 0x01000000U) -+ { -+ unsigned long addr; -+ -+ addr = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G1] = addr; -+ if ((bajmpl & 0xFFFFE000U) == 0x81C06000U) -+ addr += (((bajmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); -+ else -+ addr = regs->tpc + ((((bajmpl | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #4 */ -+ unsigned int sethi, mov1, call, mov2; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(mov1, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(call, (unsigned int *)(regs->tpc+8)); -+ err |= get_user(mov2, (unsigned int *)(regs->tpc+12)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ mov1 == 0x8210000FU && -+ (call & 0xC0000000U) == 0x40000000U && -+ mov2 == 0x9E100001U) -+ { -+ unsigned long addr; -+ -+ regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC]; -+ addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #5 */ -+ unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); -+ err |= get_user(or1, (unsigned int *)(regs->tpc+12)); -+ err |= get_user(or2, (unsigned int *)(regs->tpc+16)); -+ err |= get_user(sllx, (unsigned int *)(regs->tpc+20)); -+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+24)); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+28)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ (sethi1 & 0xFFC00000U) == 0x03000000U && -+ (sethi2 & 0xFFC00000U) == 0x0B000000U && -+ (or1 & 0xFFFFE000U) == 0x82106000U && -+ (or2 & 0xFFFFE000U) == 0x8A116000U && -+ sllx == 0x83287020U && -+ jmpl == 0x81C04005U && -+ nop == 0x01000000U) -+ { -+ unsigned long addr; -+ -+ regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); -+ regs->u_regs[UREG_G1] <<= 32; -+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); -+ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: patched PLT emulation #6 */ -+ unsigned int sethi, sethi1, sethi2, sllx, or, jmpl, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); -+ err |= get_user(sllx, (unsigned int *)(regs->tpc+12)); -+ err |= get_user(or, (unsigned int *)(regs->tpc+16)); -+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+20)); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+24)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ (sethi1 & 0xFFC00000U) == 0x03000000U && -+ (sethi2 & 0xFFC00000U) == 0x0B000000U && -+ sllx == 0x83287020U && -+ (or & 0xFFFFE000U) == 0x8A116000U && -+ jmpl == 0x81C04005U && -+ nop == 0x01000000U) -+ { -+ unsigned long addr; -+ -+ regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G1] <<= 32; -+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU); -+ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: unpatched PLT emulation step 1 */ -+ unsigned int sethi, ba, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(ba, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && -+ nop == 0x01000000U) -+ { -+ unsigned long addr; -+ unsigned int save, call; -+ unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl; -+ -+ if ((ba & 0xFFC00000U) == 0x30800000U) -+ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); -+ else -+ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ err = get_user(save, (unsigned int *)addr); -+ err |= get_user(call, (unsigned int *)(addr+4)); -+ err |= get_user(nop, (unsigned int *)(addr+8)); -+ if (err) -+ break; -+ -+#ifdef CONFIG_PAX_DLRESOLVE -+ if (save == 0x9DE3BFA8U && -+ (call & 0xC0000000U) == 0x40000000U && -+ nop == 0x01000000U) -+ { -+ struct vm_area_struct *vma; -+ unsigned long call_dl_resolve; -+ -+ down_read(¤t->mm->mmap_sem); -+ call_dl_resolve = current->mm->call_dl_resolve; -+ up_read(¤t->mm->mmap_sem); -+ if (likely(call_dl_resolve)) -+ goto emulate; -+ -+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); -+ -+ down_write(¤t->mm->mmap_sem); -+ if (current->mm->call_dl_resolve) { -+ call_dl_resolve = current->mm->call_dl_resolve; -+ up_write(¤t->mm->mmap_sem); -+ if (vma) -+ kmem_cache_free(vm_area_cachep, vma); -+ goto emulate; -+ } -+ -+ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); -+ if (!vma || (call_dl_resolve & ~PAGE_MASK)) { -+ up_write(¤t->mm->mmap_sem); -+ if (vma) -+ kmem_cache_free(vm_area_cachep, vma); -+ return 1; -+ } -+ -+ if (pax_insert_vma(vma, call_dl_resolve)) { -+ up_write(¤t->mm->mmap_sem); -+ kmem_cache_free(vm_area_cachep, vma); -+ return 1; -+ } -+ -+ current->mm->call_dl_resolve = call_dl_resolve; -+ up_write(¤t->mm->mmap_sem); -+ -+emulate: -+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; -+ regs->tpc = call_dl_resolve; -+ regs->tnpc = addr+4; -+ return 3; -+ } -+#endif -+ -+ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ -+ if ((save & 0xFFC00000U) == 0x05000000U && -+ (call & 0xFFFFE000U) == 0x85C0A000U && -+ nop == 0x01000000U) -+ { -+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G2] = addr + 4; -+ addr = (save & 0x003FFFFFU) << 10; -+ addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 3; -+ } -+ -+ /* PaX: 64-bit PLT stub */ -+ err = get_user(sethi1, (unsigned int *)addr); -+ err |= get_user(sethi2, (unsigned int *)(addr+4)); -+ err |= get_user(or1, (unsigned int *)(addr+8)); -+ err |= get_user(or2, (unsigned int *)(addr+12)); -+ err |= get_user(sllx, (unsigned int *)(addr+16)); -+ err |= get_user(add, (unsigned int *)(addr+20)); -+ err |= get_user(jmpl, (unsigned int *)(addr+24)); -+ err |= get_user(nop, (unsigned int *)(addr+28)); -+ if (err) -+ break; -+ -+ if ((sethi1 & 0xFFC00000U) == 0x09000000U && -+ (sethi2 & 0xFFC00000U) == 0x0B000000U && -+ (or1 & 0xFFFFE000U) == 0x88112000U && -+ (or2 & 0xFFFFE000U) == 0x8A116000U && -+ sllx == 0x89293020U && -+ add == 0x8A010005U && -+ jmpl == 0x89C14000U && -+ nop == 0x01000000U) -+ { -+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); -+ regs->u_regs[UREG_G4] <<= 32; -+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); -+ regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4]; -+ regs->u_regs[UREG_G4] = addr + 24; -+ addr = regs->u_regs[UREG_G5]; -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 3; -+ } -+ } -+ } while (0); -+ -+#ifdef CONFIG_PAX_DLRESOLVE -+ do { /* PaX: unpatched PLT emulation step 2 */ -+ unsigned int save, call, nop; -+ -+ err = get_user(save, (unsigned int *)(regs->tpc-4)); -+ err |= get_user(call, (unsigned int *)regs->tpc); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+4)); -+ if (err) -+ break; -+ -+ if (save == 0x9DE3BFA8U && -+ (call & 0xC0000000U) == 0x40000000U && -+ nop == 0x01000000U) -+ { -+ unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ dl_resolve &= 0xFFFFFFFFUL; -+ -+ regs->u_regs[UREG_RETPC] = regs->tpc; -+ regs->tpc = dl_resolve; -+ regs->tnpc = dl_resolve+4; -+ return 3; -+ } -+ } while (0); -+#endif -+ -+ do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */ -+ unsigned int sethi, ba, nop; -+ -+ err = get_user(sethi, (unsigned int *)regs->tpc); -+ err |= get_user(ba, (unsigned int *)(regs->tpc+4)); -+ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); -+ -+ if (err) -+ break; -+ -+ if ((sethi & 0xFFC00000U) == 0x03000000U && -+ (ba & 0xFFF00000U) == 0x30600000U && -+ nop == 0x01000000U) -+ { -+ unsigned long addr; -+ -+ addr = (sethi & 0x003FFFFFU) << 10; -+ regs->u_regs[UREG_G1] = addr; -+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); -+ -+ if (test_thread_flag(TIF_32BIT)) -+ addr &= 0xFFFFFFFFUL; -+ -+ regs->tpc = addr; -+ regs->tnpc = addr+4; -+ return 2; -+ } -+ } while (0); -+ -+#endif -+ -+ return 1; -+} -+ -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ unsigned long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 8; i++) { -+ unsigned int c; -+ if (get_user(c, (unsigned int *)pc+i)) -+ printk(KERN_CONT "???????? "); -+ else -+ printk(KERN_CONT "%08x ", c); -+ } -+ printk("\n"); -+} -+#endif -+ - asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) - { - struct mm_struct *mm = current->mm; -@@ -343,6 +806,29 @@ retry: - if (!vma) - goto bad_area; - -+#ifdef CONFIG_PAX_PAGEEXEC -+ /* PaX: detect ITLB misses on non-exec pages */ -+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address && -+ !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB)) -+ { -+ if (address != regs->tpc) -+ goto good_area; -+ -+ up_read(&mm->mmap_sem); -+ switch (pax_handle_fetch_fault(regs)) { -+ -+#ifdef CONFIG_PAX_EMUPLT -+ case 2: -+ case 3: -+ return; -+#endif -+ -+ } -+ pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS)); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - /* Pure DTLB misses do not tell us whether the fault causing - * load/store/atomic was a write or not, it only says that there - * was no match. So in such a case we (carefully) read the -diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c -index 07e1453..0a7d9e9 100644 ---- a/arch/sparc/mm/hugetlbpage.c -+++ b/arch/sparc/mm/hugetlbpage.c -@@ -67,7 +67,7 @@ full_search: - } - return -ENOMEM; - } -- if (likely(!vma || addr + len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* - * Remember the place where we stopped the search: - */ -@@ -106,7 +106,7 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr-len); -- if (!vma || addr <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr - len, len)) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr-len); - } -@@ -115,16 +115,17 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - if (unlikely(mm->mmap_base < len)) - goto bottomup; - -- addr = (mm->mmap_base-len) & HPAGE_MASK; -+ addr = mm->mmap_base - len; - - do { -+ addr &= HPAGE_MASK; - /* - * Lookup failure means no vma is above this address, - * else if new region fits below vma->vm_start, - * return with success: - */ - vma = find_vma(mm, addr); -- if (likely(!vma || addr+len <= vma->vm_start)) { -+ if (likely(check_heap_stack_gap(vma, addr, len))) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - } -@@ -134,8 +135,8 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = (vma->vm_start-len) & HPAGE_MASK; -- } while (likely(len < vma->vm_start)); -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); - - bottomup: - /* -@@ -181,8 +182,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - if (addr) { - addr = ALIGN(addr, HPAGE_SIZE); - vma = find_vma(mm, addr); -- if (task_size - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - if (mm->get_unmapped_area == arch_get_unmapped_area) -diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h -index f4500c6..889656c 100644 ---- a/arch/tile/include/asm/atomic_64.h -+++ b/arch/tile/include/asm/atomic_64.h -@@ -143,6 +143,16 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u) - - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) - -+#define atomic64_read_unchecked(v) atomic64_read(v) -+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) -+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) -+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) -+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) -+#define atomic64_inc_unchecked(v) atomic64_inc(v) -+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) -+#define atomic64_dec_unchecked(v) atomic64_dec(v) -+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) -+ - /* Atomic dec and inc don't implement barrier, so provide them if needed. */ - #define smp_mb__before_atomic_dec() smp_mb() - #define smp_mb__after_atomic_dec() smp_mb() -diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h -index a9a5299..0fce79e 100644 ---- a/arch/tile/include/asm/cache.h -+++ b/arch/tile/include/asm/cache.h -@@ -15,11 +15,12 @@ - #ifndef _ASM_TILE_CACHE_H - #define _ASM_TILE_CACHE_H - -+#include - #include - - /* bytes per L1 data cache line */ - #define L1_CACHE_SHIFT CHIP_L1D_LOG_LINE_SIZE() --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - /* bytes per L2 cache line */ - #define L2_CACHE_SHIFT CHIP_L2_LOG_LINE_SIZE() -diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h -index 9ab078a..d6635c2 100644 ---- a/arch/tile/include/asm/uaccess.h -+++ b/arch/tile/include/asm/uaccess.h -@@ -403,9 +403,9 @@ static inline unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n) - { -- int sz = __compiletime_object_size(to); -+ size_t sz = __compiletime_object_size(to); - -- if (likely(sz == -1 || sz >= n)) -+ if (likely(sz == (size_t)-1 || sz >= n)) - n = _copy_from_user(to, from, n); - else - copy_from_user_overflow(); -diff --git a/arch/um/Makefile b/arch/um/Makefile -index 0970910..9f65c40 100644 ---- a/arch/um/Makefile -+++ b/arch/um/Makefile -@@ -62,6 +62,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ - $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ - $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include - -+ifdef CONSTIFY_PLUGIN -+USER_CFLAGS += -fplugin-arg-constify_plugin-no-constify -+endif -+ - #This will adjust *FLAGS accordingly to the platform. - include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) - -diff --git a/arch/um/include/asm/cache.h b/arch/um/include/asm/cache.h -index 19e1bdd..3665b77 100644 ---- a/arch/um/include/asm/cache.h -+++ b/arch/um/include/asm/cache.h -@@ -1,6 +1,7 @@ - #ifndef __UM_CACHE_H - #define __UM_CACHE_H - -+#include - - #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT) - # define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) -@@ -12,6 +13,6 @@ - # define L1_CACHE_SHIFT 5 - #endif - --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #endif -diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h -index 2e0a6b1..a64d0f5 100644 ---- a/arch/um/include/asm/kmap_types.h -+++ b/arch/um/include/asm/kmap_types.h -@@ -8,6 +8,6 @@ - - /* No more #include "asm/arch/kmap_types.h" ! */ - --#define KM_TYPE_NR 14 -+#define KM_TYPE_NR 15 - - #endif -diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h -index 7cfc3ce..cbd1a58 100644 ---- a/arch/um/include/asm/page.h -+++ b/arch/um/include/asm/page.h -@@ -14,6 +14,9 @@ - #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) - #define PAGE_MASK (~(PAGE_SIZE-1)) - -+#define ktla_ktva(addr) (addr) -+#define ktva_ktla(addr) (addr) -+ - #ifndef __ASSEMBLY__ - - struct page; -diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h -index 0032f92..cd151e0 100644 ---- a/arch/um/include/asm/pgtable-3level.h -+++ b/arch/um/include/asm/pgtable-3level.h -@@ -58,6 +58,7 @@ - #define pud_present(x) (pud_val(x) & _PAGE_PRESENT) - #define pud_populate(mm, pud, pmd) \ - set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd))) -+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) - - #ifdef CONFIG_64BIT - #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval)) -diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c -index c5f5afa..6abce4b 100644 ---- a/arch/um/kernel/process.c -+++ b/arch/um/kernel/process.c -@@ -402,22 +402,6 @@ int singlestepping(void * t) - return 2; - } - --/* -- * Only x86 and x86_64 have an arch_align_stack(). -- * All other arches have "#define arch_align_stack(x) (x)" -- * in their asm/system.h -- * As this is included in UML from asm-um/system-generic.h, -- * we can use it to behave as the subarch does. -- */ --#ifndef arch_align_stack --unsigned long arch_align_stack(unsigned long sp) --{ -- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) -- sp -= get_random_int() % 8192; -- return sp & ~0xf; --} --#endif -- - unsigned long get_wchan(struct task_struct *p) - { - unsigned long stack_page, sp, ip; -diff --git a/arch/unicore32/include/asm/cache.h b/arch/unicore32/include/asm/cache.h -index ad8f795..2c7eec6 100644 ---- a/arch/unicore32/include/asm/cache.h -+++ b/arch/unicore32/include/asm/cache.h -@@ -12,8 +12,10 @@ - #ifndef __UNICORE_CACHE_H__ - #define __UNICORE_CACHE_H__ - --#define L1_CACHE_SHIFT (5) --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#include -+ -+#define L1_CACHE_SHIFT 5 -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - /* - * Memory returned by kmalloc() may be used for DMA, so we must make -diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig -index 01897ac..446d4b9 100644 ---- a/arch/x86/Kconfig -+++ b/arch/x86/Kconfig -@@ -220,7 +220,7 @@ config X86_HT - - config X86_32_LAZY_GS - def_bool y -- depends on X86_32 && !CC_STACKPROTECTOR -+ depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF - - config ARCH_HWEIGHT_CFLAGS - string -@@ -1049,7 +1049,7 @@ choice - - config NOHIGHMEM - bool "off" -- depends on !X86_NUMAQ -+ depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE) - ---help--- - Linux can use up to 64 Gigabytes of physical memory on x86 systems. - However, the address space of 32-bit x86 processors is only 4 -@@ -1086,7 +1086,7 @@ config NOHIGHMEM - - config HIGHMEM4G - bool "4GB" -- depends on !X86_NUMAQ -+ depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE) - ---help--- - Select this if you have a 32-bit processor and between 1 and 4 - gigabytes of physical RAM. -@@ -1140,7 +1140,7 @@ config PAGE_OFFSET - hex - default 0xB0000000 if VMSPLIT_3G_OPT - default 0x80000000 if VMSPLIT_2G -- default 0x78000000 if VMSPLIT_2G_OPT -+ default 0x70000000 if VMSPLIT_2G_OPT - default 0x40000000 if VMSPLIT_1G - default 0xC0000000 - depends on X86_32 -@@ -1524,6 +1524,7 @@ config SECCOMP - - config CC_STACKPROTECTOR - bool "Enable -fstack-protector buffer overflow detection" -+ depends on X86_64 || !PAX_MEMORY_UDEREF - ---help--- - This option turns on the -fstack-protector GCC feature. This - feature puts, at the beginning of functions, a canary value on -@@ -1581,6 +1582,7 @@ config KEXEC_JUMP - config PHYSICAL_START - hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) - default "0x1000000" -+ range 0x400000 0x40000000 - ---help--- - This gives the physical address where the kernel is loaded. - -@@ -1644,6 +1646,7 @@ config X86_NEED_RELOCS - config PHYSICAL_ALIGN - hex "Alignment value to which kernel should be aligned" if X86_32 - default "0x1000000" -+ range 0x400000 0x1000000 if PAX_KERNEXEC - range 0x2000 0x1000000 - ---help--- - This value puts the alignment restrictions on physical address -@@ -1675,9 +1678,10 @@ config HOTPLUG_CPU - Say N if you want to disable CPU hotplug. - - config COMPAT_VDSO -- def_bool y -+ def_bool n - prompt "Compat VDSO support" - depends on X86_32 || IA32_EMULATION -+ depends on !PAX_NOEXEC && !PAX_MEMORY_UDEREF - ---help--- - Map the 32-bit VDSO to the predictable old-style address too. - -diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu -index 706e12e..62e4feb 100644 ---- a/arch/x86/Kconfig.cpu -+++ b/arch/x86/Kconfig.cpu -@@ -334,7 +334,7 @@ config X86_PPRO_FENCE - - config X86_F00F_BUG - def_bool y -- depends on M586MMX || M586TSC || M586 || M486 || M386 -+ depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC - - config X86_INVD_BUG - def_bool y -@@ -358,7 +358,7 @@ config X86_POPAD_OK - - config X86_ALIGNMENT_16 - def_bool y -- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 -+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 - - config X86_INTEL_USERCOPY - def_bool y -@@ -404,7 +404,7 @@ config X86_CMPXCHG64 - # generates cmov. - config X86_CMOV - def_bool y -- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) -+ depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) - - config X86_MINIMUM_CPU_FAMILY - int -diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug -index b322f12..652d0d9 100644 ---- a/arch/x86/Kconfig.debug -+++ b/arch/x86/Kconfig.debug -@@ -84,7 +84,7 @@ config X86_PTDUMP - config DEBUG_RODATA - bool "Write protect kernel read-only data structures" - default y -- depends on DEBUG_KERNEL -+ depends on DEBUG_KERNEL && BROKEN - ---help--- - Mark the kernel read-only data as write-protected in the pagetables, - in order to catch accidental (and incorrect) writes to such const -@@ -102,7 +102,7 @@ config DEBUG_RODATA_TEST - - config DEBUG_SET_MODULE_RONX - bool "Set loadable kernel module data as NX and text as RO" -- depends on MODULES -+ depends on MODULES && BROKEN - ---help--- - This option helps catch unintended modifications to loadable - kernel module's text and read-only data. It also prevents execution -@@ -294,7 +294,7 @@ config OPTIMIZE_INLINING - - config DEBUG_STRICT_USER_COPY_CHECKS - bool "Strict copy size checks" -- depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING -+ depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING && !PAX_SIZE_OVERFLOW - ---help--- - Enabling this option turns a certain set of sanity checks for user - copy operations into compile time failures. -diff --git a/arch/x86/Makefile b/arch/x86/Makefile -index 05afcca..b6ecb51 100644 ---- a/arch/x86/Makefile -+++ b/arch/x86/Makefile -@@ -50,6 +50,7 @@ else - UTS_MACHINE := x86_64 - CHECKFLAGS += -D__x86_64__ -m64 - -+ biarch := $(call cc-option,-m64) - KBUILD_AFLAGS += -m64 - KBUILD_CFLAGS += -m64 - -@@ -229,3 +230,12 @@ define archhelp - echo ' FDARGS="..." arguments for the booted kernel' - echo ' FDINITRD=file initrd for the booted kernel' - endef -+ -+define OLD_LD -+ -+*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils. -+*** Please upgrade your binutils to 2.18 or newer -+endef -+ -+archprepare: -+ $(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD))) -diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile -index f7535be..37db2d1 100644 ---- a/arch/x86/boot/Makefile -+++ b/arch/x86/boot/Makefile -@@ -64,6 +64,9 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ - $(call cc-option, -fno-stack-protector) \ - $(call cc-option, -mpreferred-stack-boundary=2) - KBUILD_CFLAGS += $(call cc-option, -m32) -+ifdef CONSTIFY_PLUGIN -+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify -+endif - KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ - GCOV_PROFILE := n - -diff --git a/arch/x86/boot/bitops.h b/arch/x86/boot/bitops.h -index 878e4b9..20537ab 100644 ---- a/arch/x86/boot/bitops.h -+++ b/arch/x86/boot/bitops.h -@@ -26,7 +26,7 @@ static inline int variable_test_bit(int nr, const void *addr) - u8 v; - const u32 *p = (const u32 *)addr; - -- asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); -+ asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); - return v; - } - -@@ -37,7 +37,7 @@ static inline int variable_test_bit(int nr, const void *addr) - - static inline void set_bit(int nr, void *addr) - { -- asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); -+ asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); - } - - #endif /* BOOT_BITOPS_H */ -diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h -index 18997e5..83d9c67 100644 ---- a/arch/x86/boot/boot.h -+++ b/arch/x86/boot/boot.h -@@ -85,7 +85,7 @@ static inline void io_delay(void) - static inline u16 ds(void) - { - u16 seg; -- asm("movw %%ds,%0" : "=rm" (seg)); -+ asm volatile("movw %%ds,%0" : "=rm" (seg)); - return seg; - } - -@@ -181,7 +181,7 @@ static inline void wrgs32(u32 v, addr_t addr) - static inline int memcmp(const void *s1, const void *s2, size_t len) - { - u8 diff; -- asm("repe; cmpsb; setnz %0" -+ asm volatile("repe; cmpsb; setnz %0" - : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); - return diff; - } -diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile -index 8a84501..b2d165f 100644 ---- a/arch/x86/boot/compressed/Makefile -+++ b/arch/x86/boot/compressed/Makefile -@@ -14,6 +14,9 @@ cflags-$(CONFIG_X86_64) := -mcmodel=small - KBUILD_CFLAGS += $(cflags-y) - KBUILD_CFLAGS += $(call cc-option,-ffreestanding) - KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) -+ifdef CONSTIFY_PLUGIN -+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify -+endif - - KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ - GCOV_PROFILE := n -diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c -index 90201aa..be1de62 100644 ---- a/arch/x86/boot/compressed/eboot.c -+++ b/arch/x86/boot/compressed/eboot.c -@@ -144,7 +144,6 @@ again: - *addr = max_addr; - } - --free_pool: - efi_call_phys1(sys_table->boottime->free_pool, map); - - fail: -@@ -208,7 +207,6 @@ static efi_status_t low_alloc(unsigned long size, unsigned long align, - if (i == map_size / desc_size) - status = EFI_NOT_FOUND; - --free_pool: - efi_call_phys1(sys_table->boottime->free_pool, map); - fail: - return status; -diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S -index aa4aaf1..6656f2f 100644 ---- a/arch/x86/boot/compressed/head_32.S -+++ b/arch/x86/boot/compressed/head_32.S -@@ -116,7 +116,7 @@ preferred_addr: - notl %eax - andl %eax, %ebx - #else -- movl $LOAD_PHYSICAL_ADDR, %ebx -+ movl $____LOAD_PHYSICAL_ADDR, %ebx - #endif - - /* Target address to relocate to for decompression */ -@@ -202,7 +202,7 @@ relocated: - * and where it was actually loaded. - */ - movl %ebp, %ebx -- subl $LOAD_PHYSICAL_ADDR, %ebx -+ subl $____LOAD_PHYSICAL_ADDR, %ebx - jz 2f /* Nothing to be done if loaded at compiled addr. */ - /* - * Process relocations. -@@ -210,8 +210,7 @@ relocated: - - 1: subl $4, %edi - movl (%edi), %ecx -- testl %ecx, %ecx -- jz 2f -+ jecxz 2f - addl %ebx, -__PAGE_OFFSET(%ebx, %ecx) - jmp 1b - 2: -diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S -index 2c4b171..e1fa5b1 100644 ---- a/arch/x86/boot/compressed/head_64.S -+++ b/arch/x86/boot/compressed/head_64.S -@@ -91,7 +91,7 @@ ENTRY(startup_32) - notl %eax - andl %eax, %ebx - #else -- movl $LOAD_PHYSICAL_ADDR, %ebx -+ movl $____LOAD_PHYSICAL_ADDR, %ebx - #endif - - /* Target address to relocate to for decompression */ -@@ -273,7 +273,7 @@ preferred_addr: - notq %rax - andq %rax, %rbp - #else -- movq $LOAD_PHYSICAL_ADDR, %rbp -+ movq $____LOAD_PHYSICAL_ADDR, %rbp - #endif - - /* Target address to relocate to for decompression */ -diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c -index 88f7ff6..ed695dd 100644 ---- a/arch/x86/boot/compressed/misc.c -+++ b/arch/x86/boot/compressed/misc.c -@@ -303,7 +303,7 @@ static void parse_elf(void *output) - case PT_LOAD: - #ifdef CONFIG_RELOCATABLE - dest = output; -- dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR); -+ dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR); - #else - dest = (void *)(phdr->p_paddr); - #endif -@@ -352,7 +352,7 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap, - error("Destination address too large"); - #endif - #ifndef CONFIG_RELOCATABLE -- if ((unsigned long)output != LOAD_PHYSICAL_ADDR) -+ if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR) - error("Wrong destination address"); - #endif - -diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c -index 4d3ff03..e4972ff 100644 ---- a/arch/x86/boot/cpucheck.c -+++ b/arch/x86/boot/cpucheck.c -@@ -74,7 +74,7 @@ static int has_fpu(void) - u16 fcw = -1, fsw = -1; - u32 cr0; - -- asm("movl %%cr0,%0" : "=r" (cr0)); -+ asm volatile("movl %%cr0,%0" : "=r" (cr0)); - if (cr0 & (X86_CR0_EM|X86_CR0_TS)) { - cr0 &= ~(X86_CR0_EM|X86_CR0_TS); - asm volatile("movl %0,%%cr0" : : "r" (cr0)); -@@ -90,7 +90,7 @@ static int has_eflag(u32 mask) - { - u32 f0, f1; - -- asm("pushfl ; " -+ asm volatile("pushfl ; " - "pushfl ; " - "popl %0 ; " - "movl %0,%1 ; " -@@ -115,7 +115,7 @@ static void get_flags(void) - set_bit(X86_FEATURE_FPU, cpu.flags); - - if (has_eflag(X86_EFLAGS_ID)) { -- asm("cpuid" -+ asm volatile("cpuid" - : "=a" (max_intel_level), - "=b" (cpu_vendor[0]), - "=d" (cpu_vendor[1]), -@@ -124,7 +124,7 @@ static void get_flags(void) - - if (max_intel_level >= 0x00000001 && - max_intel_level <= 0x0000ffff) { -- asm("cpuid" -+ asm volatile("cpuid" - : "=a" (tfms), - "=c" (cpu.flags[4]), - "=d" (cpu.flags[0]) -@@ -136,7 +136,7 @@ static void get_flags(void) - cpu.model += ((tfms >> 16) & 0xf) << 4; - } - -- asm("cpuid" -+ asm volatile("cpuid" - : "=a" (max_amd_level) - : "a" (0x80000000) - : "ebx", "ecx", "edx"); -@@ -144,7 +144,7 @@ static void get_flags(void) - if (max_amd_level >= 0x80000001 && - max_amd_level <= 0x8000ffff) { - u32 eax = 0x80000001; -- asm("cpuid" -+ asm volatile("cpuid" - : "+a" (eax), - "=c" (cpu.flags[6]), - "=d" (cpu.flags[1]) -@@ -203,9 +203,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) - u32 ecx = MSR_K7_HWCR; - u32 eax, edx; - -- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); -+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - eax &= ~(1 << 15); -- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); -+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); - - get_flags(); /* Make sure it really did something */ - err = check_flags(); -@@ -218,9 +218,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) - u32 ecx = MSR_VIA_FCR; - u32 eax, edx; - -- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); -+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - eax |= (1<<1)|(1<<7); -- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); -+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); - - set_bit(X86_FEATURE_CX8, cpu.flags); - err = check_flags(); -@@ -231,12 +231,12 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) - u32 eax, edx; - u32 level = 1; - -- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); -- asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); -- asm("cpuid" -+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); -+ asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); -+ asm volatile("cpuid" - : "+a" (level), "=d" (cpu.flags[0]) - : : "ecx", "ebx"); -- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); -+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); - - err = check_flags(); - } -diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S -index b4e15dd..8ac59ce 100644 ---- a/arch/x86/boot/header.S -+++ b/arch/x86/boot/header.S -@@ -391,10 +391,14 @@ setup_data: .quad 0 # 64-bit physical pointer to - # single linked list of - # struct setup_data - --pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr -+pref_address: .quad ____LOAD_PHYSICAL_ADDR # preferred load addr - - #define ZO_INIT_SIZE (ZO__end - ZO_startup_32 + ZO_z_extract_offset) -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+#define VO_INIT_SIZE (VO__end - VO__text - __PAGE_OFFSET - ____LOAD_PHYSICAL_ADDR) -+#else - #define VO_INIT_SIZE (VO__end - VO__text) -+#endif - #if ZO_INIT_SIZE > VO_INIT_SIZE - #define INIT_SIZE ZO_INIT_SIZE - #else -diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c -index db75d07..8e6d0af 100644 ---- a/arch/x86/boot/memory.c -+++ b/arch/x86/boot/memory.c -@@ -19,7 +19,7 @@ - - static int detect_memory_e820(void) - { -- int count = 0; -+ unsigned int count = 0; - struct biosregs ireg, oreg; - struct e820entry *desc = boot_params.e820_map; - static struct e820entry buf; /* static so it is zeroed */ -diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c -index 11e8c6e..fdbb1ed 100644 ---- a/arch/x86/boot/video-vesa.c -+++ b/arch/x86/boot/video-vesa.c -@@ -200,6 +200,7 @@ static void vesa_store_pm_info(void) - - boot_params.screen_info.vesapm_seg = oreg.es; - boot_params.screen_info.vesapm_off = oreg.di; -+ boot_params.screen_info.vesapm_size = oreg.cx; - } - - /* -diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c -index 43eda28..5ab5fdb 100644 ---- a/arch/x86/boot/video.c -+++ b/arch/x86/boot/video.c -@@ -96,7 +96,7 @@ static void store_mode_params(void) - static unsigned int get_entry(void) - { - char entry_buf[4]; -- int i, len = 0; -+ unsigned int i, len = 0; - int key; - unsigned int v; - -diff --git a/arch/x86/crypto/aes-x86_64-asm_64.S b/arch/x86/crypto/aes-x86_64-asm_64.S -index 5b577d5..3c1fed4 100644 ---- a/arch/x86/crypto/aes-x86_64-asm_64.S -+++ b/arch/x86/crypto/aes-x86_64-asm_64.S -@@ -8,6 +8,8 @@ - * including this sentence is retained in full. - */ - -+#include -+ - .extern crypto_ft_tab - .extern crypto_it_tab - .extern crypto_fl_tab -@@ -71,6 +73,8 @@ FUNC: movq r1,r2; \ - je B192; \ - leaq 32(r9),r9; - -+#define ret pax_force_retaddr 0, 1; ret -+ - #define epilogue(r1,r2,r3,r4,r5,r6,r7,r8,r9) \ - movq r1,r2; \ - movq r3,r4; \ -diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S -index 3470624..201259d 100644 ---- a/arch/x86/crypto/aesni-intel_asm.S -+++ b/arch/x86/crypto/aesni-intel_asm.S -@@ -31,6 +31,7 @@ - - #include - #include -+#include - - #ifdef __x86_64__ - .data -@@ -1436,7 +1437,9 @@ _return_T_done_decrypt: - pop %r14 - pop %r13 - pop %r12 -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_gcm_dec) - - - /***************************************************************************** -@@ -1699,7 +1702,9 @@ _return_T_done_encrypt: - pop %r14 - pop %r13 - pop %r12 -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_gcm_enc) - - #endif - -@@ -1714,6 +1719,7 @@ _key_expansion_256a: - pxor %xmm1, %xmm0 - movaps %xmm0, (TKEYP) - add $0x10, TKEYP -+ pax_force_retaddr_bts - ret - - .align 4 -@@ -1738,6 +1744,7 @@ _key_expansion_192a: - shufps $0b01001110, %xmm2, %xmm1 - movaps %xmm1, 0x10(TKEYP) - add $0x20, TKEYP -+ pax_force_retaddr_bts - ret - - .align 4 -@@ -1757,6 +1764,7 @@ _key_expansion_192b: - - movaps %xmm0, (TKEYP) - add $0x10, TKEYP -+ pax_force_retaddr_bts - ret - - .align 4 -@@ -1769,6 +1777,7 @@ _key_expansion_256b: - pxor %xmm1, %xmm2 - movaps %xmm2, (TKEYP) - add $0x10, TKEYP -+ pax_force_retaddr_bts - ret - - /* -@@ -1881,7 +1890,9 @@ ENTRY(aesni_set_key) - #ifndef __x86_64__ - popl KEYP - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_set_key) - - /* - * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) -@@ -1902,7 +1913,9 @@ ENTRY(aesni_enc) - popl KLEN - popl KEYP - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_enc) - - /* - * _aesni_enc1: internal ABI -@@ -1959,6 +1972,7 @@ _aesni_enc1: - AESENC KEY STATE - movaps 0x70(TKEYP), KEY - AESENCLAST KEY STATE -+ pax_force_retaddr_bts - ret - - /* -@@ -2067,6 +2081,7 @@ _aesni_enc4: - AESENCLAST KEY STATE2 - AESENCLAST KEY STATE3 - AESENCLAST KEY STATE4 -+ pax_force_retaddr_bts - ret - - /* -@@ -2089,7 +2104,9 @@ ENTRY(aesni_dec) - popl KLEN - popl KEYP - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_dec) - - /* - * _aesni_dec1: internal ABI -@@ -2146,6 +2163,7 @@ _aesni_dec1: - AESDEC KEY STATE - movaps 0x70(TKEYP), KEY - AESDECLAST KEY STATE -+ pax_force_retaddr_bts - ret - - /* -@@ -2254,6 +2272,7 @@ _aesni_dec4: - AESDECLAST KEY STATE2 - AESDECLAST KEY STATE3 - AESDECLAST KEY STATE4 -+ pax_force_retaddr_bts - ret - - /* -@@ -2311,7 +2330,9 @@ ENTRY(aesni_ecb_enc) - popl KEYP - popl LEN - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_ecb_enc) - - /* - * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, -@@ -2369,7 +2390,9 @@ ENTRY(aesni_ecb_dec) - popl KEYP - popl LEN - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_ecb_dec) - - /* - * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, -@@ -2410,7 +2433,9 @@ ENTRY(aesni_cbc_enc) - popl LEN - popl IVP - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_cbc_enc) - - /* - * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, -@@ -2500,7 +2525,9 @@ ENTRY(aesni_cbc_dec) - popl LEN - popl IVP - #endif -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_cbc_dec) - - #ifdef __x86_64__ - .align 16 -@@ -2526,6 +2553,7 @@ _aesni_inc_init: - mov $1, TCTR_LOW - MOVQ_R64_XMM TCTR_LOW INC - MOVQ_R64_XMM CTR TCTR_LOW -+ pax_force_retaddr_bts - ret - - /* -@@ -2554,6 +2582,7 @@ _aesni_inc: - .Linc_low: - movaps CTR, IV - PSHUFB_XMM BSWAP_MASK IV -+ pax_force_retaddr_bts - ret - - /* -@@ -2614,5 +2643,7 @@ ENTRY(aesni_ctr_enc) - .Lctr_enc_ret: - movups IV, (IVP) - .Lctr_enc_just_ret: -+ pax_force_retaddr 0, 1 - ret -+ENDPROC(aesni_ctr_enc) - #endif -diff --git a/arch/x86/crypto/blowfish-x86_64-asm_64.S b/arch/x86/crypto/blowfish-x86_64-asm_64.S -index 391d245..67f35c2 100644 ---- a/arch/x86/crypto/blowfish-x86_64-asm_64.S -+++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S -@@ -20,6 +20,8 @@ - * - */ - -+#include -+ - .file "blowfish-x86_64-asm.S" - .text - -@@ -151,9 +153,11 @@ __blowfish_enc_blk: - jnz __enc_xor; - - write_block(); -+ pax_force_retaddr 0, 1 - ret; - __enc_xor: - xor_block(); -+ pax_force_retaddr 0, 1 - ret; - - .align 8 -@@ -188,6 +192,7 @@ blowfish_dec_blk: - - movq %r11, %rbp; - -+ pax_force_retaddr 0, 1 - ret; - - /********************************************************************** -@@ -342,6 +347,7 @@ __blowfish_enc_blk_4way: - - popq %rbx; - popq %rbp; -+ pax_force_retaddr 0, 1 - ret; - - __enc_xor4: -@@ -349,6 +355,7 @@ __enc_xor4: - - popq %rbx; - popq %rbp; -+ pax_force_retaddr 0, 1 - ret; - - .align 8 -@@ -386,5 +393,6 @@ blowfish_dec_blk_4way: - popq %rbx; - popq %rbp; - -+ pax_force_retaddr 0, 1 - ret; - -diff --git a/arch/x86/crypto/camellia-x86_64-asm_64.S b/arch/x86/crypto/camellia-x86_64-asm_64.S -index 0b33743..7a56206 100644 ---- a/arch/x86/crypto/camellia-x86_64-asm_64.S -+++ b/arch/x86/crypto/camellia-x86_64-asm_64.S -@@ -20,6 +20,8 @@ - * - */ - -+#include -+ - .file "camellia-x86_64-asm_64.S" - .text - -@@ -229,12 +231,14 @@ __enc_done: - enc_outunpack(mov, RT1); - - movq RRBP, %rbp; -+ pax_force_retaddr 0, 1 - ret; - - __enc_xor: - enc_outunpack(xor, RT1); - - movq RRBP, %rbp; -+ pax_force_retaddr 0, 1 - ret; - - .global camellia_dec_blk; -@@ -275,6 +279,7 @@ __dec_rounds16: - dec_outunpack(); - - movq RRBP, %rbp; -+ pax_force_retaddr 0, 1 - ret; - - /********************************************************************** -@@ -468,6 +473,7 @@ __enc2_done: - - movq RRBP, %rbp; - popq %rbx; -+ pax_force_retaddr 0, 1 - ret; - - __enc2_xor: -@@ -475,6 +481,7 @@ __enc2_xor: - - movq RRBP, %rbp; - popq %rbx; -+ pax_force_retaddr 0, 1 - ret; - - .global camellia_dec_blk_2way; -@@ -517,4 +524,5 @@ __dec2_rounds16: - - movq RRBP, %rbp; - movq RXOR, %rbx; -+ pax_force_retaddr 0, 1 - ret; -diff --git a/arch/x86/crypto/salsa20-x86_64-asm_64.S b/arch/x86/crypto/salsa20-x86_64-asm_64.S -index 6214a9b..1f4fc9a 100644 ---- a/arch/x86/crypto/salsa20-x86_64-asm_64.S -+++ b/arch/x86/crypto/salsa20-x86_64-asm_64.S -@@ -1,3 +1,5 @@ -+#include -+ - # enter ECRYPT_encrypt_bytes - .text - .p2align 5 -@@ -790,6 +792,7 @@ ECRYPT_encrypt_bytes: - add %r11,%rsp - mov %rdi,%rax - mov %rsi,%rdx -+ pax_force_retaddr 0, 1 - ret - # bytesatleast65: - ._bytesatleast65: -@@ -891,6 +894,7 @@ ECRYPT_keysetup: - add %r11,%rsp - mov %rdi,%rax - mov %rsi,%rdx -+ pax_force_retaddr - ret - # enter ECRYPT_ivsetup - .text -@@ -917,4 +921,5 @@ ECRYPT_ivsetup: - add %r11,%rsp - mov %rdi,%rax - mov %rsi,%rdx -+ pax_force_retaddr - ret -diff --git a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S -index 504106b..4e50951 100644 ---- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S -+++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S -@@ -24,6 +24,8 @@ - * - */ - -+#include -+ - .file "serpent-avx-x86_64-asm_64.S" - .text - -@@ -638,12 +640,14 @@ __serpent_enc_blk_8way_avx: - write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); - write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; - - __enc_xor8: - xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); - xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; - - .align 8 -@@ -701,4 +705,5 @@ serpent_dec_blk_8way_avx: - write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2); - write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; -diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S -index 3ee1ff0..cbc568b 100644 ---- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S -+++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S -@@ -24,6 +24,8 @@ - * - */ - -+#include -+ - .file "serpent-sse2-x86_64-asm_64.S" - .text - -@@ -692,12 +694,14 @@ __serpent_enc_blk_8way: - write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); - write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; - - __enc_xor8: - xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); - xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; - - .align 8 -@@ -755,4 +759,5 @@ serpent_dec_blk_8way: - write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2); - write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2); - -+ pax_force_retaddr - ret; -diff --git a/arch/x86/crypto/sha1_ssse3_asm.S b/arch/x86/crypto/sha1_ssse3_asm.S -index 49d6987..df66bd4 100644 ---- a/arch/x86/crypto/sha1_ssse3_asm.S -+++ b/arch/x86/crypto/sha1_ssse3_asm.S -@@ -28,6 +28,8 @@ - * (at your option) any later version. - */ - -+#include -+ - #define CTX %rdi // arg1 - #define BUF %rsi // arg2 - #define CNT %rdx // arg3 -@@ -104,6 +106,7 @@ - pop %r12 - pop %rbp - pop %rbx -+ pax_force_retaddr 0, 1 - ret - - .size \name, .-\name -diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S -index 35f4557..16b379f 100644 ---- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S -+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S -@@ -21,6 +21,8 @@ - * - */ - -+#include -+ - .file "twofish-avx-x86_64-asm_64.S" - .text - -@@ -250,12 +252,14 @@ __twofish_enc_blk_8way: - outunpack_blocks(%rsi, RC1, RD1, RA1, RB1, RK1, RX, RY, RK2); - outunpack_blocks(%rax, RC2, RD2, RA2, RB2, RK1, RX, RY, RK2); - -+ pax_force_retaddr - ret; - - __enc_xor8: - outunpack_xor_blocks(%rsi, RC1, RD1, RA1, RB1, RK1, RX, RY, RK2); - outunpack_xor_blocks(%rax, RC2, RD2, RA2, RB2, RK1, RX, RY, RK2); - -+ pax_force_retaddr - ret; - - .align 8 -@@ -297,4 +301,5 @@ twofish_dec_blk_8way: - outunpack_blocks(%rsi, RA1, RB1, RC1, RD1, RK1, RX, RY, RK2); - outunpack_blocks(%rax, RA2, RB2, RC2, RD2, RK1, RX, RY, RK2); - -+ pax_force_retaddr - ret; -diff --git a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S -index 5b012a2..36d5364 100644 ---- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S -+++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S -@@ -20,6 +20,8 @@ - * - */ - -+#include -+ - .file "twofish-x86_64-asm-3way.S" - .text - -@@ -260,6 +262,7 @@ __twofish_enc_blk_3way: - popq %r13; - popq %r14; - popq %r15; -+ pax_force_retaddr 0, 1 - ret; - - __enc_xor3: -@@ -271,6 +274,7 @@ __enc_xor3: - popq %r13; - popq %r14; - popq %r15; -+ pax_force_retaddr 0, 1 - ret; - - .global twofish_dec_blk_3way -@@ -312,5 +316,6 @@ twofish_dec_blk_3way: - popq %r13; - popq %r14; - popq %r15; -+ pax_force_retaddr 0, 1 - ret; - -diff --git a/arch/x86/crypto/twofish-x86_64-asm_64.S b/arch/x86/crypto/twofish-x86_64-asm_64.S -index 7bcf3fc..f53832f 100644 ---- a/arch/x86/crypto/twofish-x86_64-asm_64.S -+++ b/arch/x86/crypto/twofish-x86_64-asm_64.S -@@ -21,6 +21,7 @@ - .text - - #include -+#include - - #define a_offset 0 - #define b_offset 4 -@@ -268,6 +269,7 @@ twofish_enc_blk: - - popq R1 - movq $1,%rax -+ pax_force_retaddr 0, 1 - ret - - twofish_dec_blk: -@@ -319,4 +321,5 @@ twofish_dec_blk: - - popq R1 - movq $1,%rax -+ pax_force_retaddr 0, 1 - ret -diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c -index 07b3a68..bd2a388 100644 ---- a/arch/x86/ia32/ia32_aout.c -+++ b/arch/x86/ia32/ia32_aout.c -@@ -159,6 +159,8 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, - unsigned long dump_start, dump_size; - struct user32 dump; - -+ memset(&dump, 0, sizeof(dump)); -+ - fs = get_fs(); - set_fs(KERNEL_DS); - has_dumped = 1; -diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c -index 673ac9b..7a8c5df 100644 ---- a/arch/x86/ia32/ia32_signal.c -+++ b/arch/x86/ia32/ia32_signal.c -@@ -162,7 +162,7 @@ asmlinkage long sys32_sigaltstack(const stack_ia32_t __user *uss_ptr, - } - seg = get_fs(); - set_fs(KERNEL_DS); -- ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp); -+ ret = do_sigaltstack(uss_ptr ? (const stack_t __force_user *)&uss : NULL, (stack_t __force_user *)&uoss, regs->sp); - set_fs(seg); - if (ret >= 0 && uoss_ptr) { - if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t))) -@@ -361,7 +361,7 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc, - */ - static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, - size_t frame_size, -- void **fpstate) -+ void __user **fpstate) - { - unsigned long sp; - -@@ -382,7 +382,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, - - if (used_math()) { - sp = sp - sig_xstate_ia32_size; -- *fpstate = (struct _fpstate_ia32 *) sp; -+ *fpstate = (struct _fpstate_ia32 __user *) sp; - if (save_i387_xstate_ia32(*fpstate) < 0) - return (void __user *) -1L; - } -@@ -390,7 +390,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, - sp -= frame_size; - /* Align the stack pointer according to the i386 ABI, - * i.e. so that on function entry ((sp + 4) & 15) == 0. */ -- sp = ((sp + 4) & -16ul) - 4; -+ sp = ((sp - 12) & -16ul) - 4; - return (void __user *) sp; - } - -@@ -448,7 +448,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, - * These are actually not used anymore, but left because some - * gdb versions depend on them as a marker. - */ -- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); -+ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); - } put_user_catch(err); - - if (err) -@@ -490,7 +490,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - 0xb8, - __NR_ia32_rt_sigreturn, - 0x80cd, -- 0, -+ 0 - }; - - frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); -@@ -520,16 +520,18 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; -+ else if (current->mm->context.vdso) -+ /* Return stub is in 32bit vsyscall page */ -+ restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); - else -- restorer = VDSO32_SYMBOL(current->mm->context.vdso, -- rt_sigreturn); -+ restorer = &frame->retcode; - put_user_ex(ptr_to_compat(restorer), &frame->pretcode); - - /* - * Not actually used anymore, but left because some gdb - * versions need it. - */ -- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); -+ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); - } put_user_catch(err); - - if (err) -diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S -index f6d477a..fc58dfb 100644 ---- a/arch/x86/ia32/ia32entry.S -+++ b/arch/x86/ia32/ia32entry.S -@@ -14,8 +14,10 @@ - #include - #include - #include -+#include - #include - #include -+#include - - /* Avoid __ASSEMBLER__'ifying just for this. */ - #include -@@ -95,6 +97,32 @@ ENTRY(native_irq_enable_sysexit) - ENDPROC(native_irq_enable_sysexit) - #endif - -+ .macro pax_enter_kernel_user -+ pax_set_fptr_mask -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ call pax_enter_kernel_user -+#endif -+ .endm -+ -+ .macro pax_exit_kernel_user -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ call pax_exit_kernel_user -+#endif -+#ifdef CONFIG_PAX_RANDKSTACK -+ pushq %rax -+ pushq %r11 -+ call pax_randomize_kstack -+ popq %r11 -+ popq %rax -+#endif -+ .endm -+ -+.macro pax_erase_kstack -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+ call pax_erase_kstack -+#endif -+.endm -+ - /* - * 32bit SYSENTER instruction entry. - * -@@ -121,12 +149,6 @@ ENTRY(ia32_sysenter_target) - CFI_REGISTER rsp,rbp - SWAPGS_UNSAFE_STACK - movq PER_CPU_VAR(kernel_stack), %rsp -- addq $(KERNEL_STACK_OFFSET),%rsp -- /* -- * No need to follow this irqs on/off section: the syscall -- * disabled irqs, here we enable it straight after entry: -- */ -- ENABLE_INTERRUPTS(CLBR_NONE) - movl %ebp,%ebp /* zero extension */ - pushq_cfi $__USER32_DS - /*CFI_REL_OFFSET ss,0*/ -@@ -134,22 +156,42 @@ ENTRY(ia32_sysenter_target) - CFI_REL_OFFSET rsp,0 - pushfq_cfi - /*CFI_REL_OFFSET rflags,0*/ -- movl TI_sysenter_return+THREAD_INFO(%rsp,3*8-KERNEL_STACK_OFFSET),%r10d -- CFI_REGISTER rip,r10 -+ orl $X86_EFLAGS_IF,(%rsp) -+ GET_THREAD_INFO(%r11) -+ movl TI_sysenter_return(%r11), %r11d -+ CFI_REGISTER rip,r11 - pushq_cfi $__USER32_CS - /*CFI_REL_OFFSET cs,0*/ - movl %eax, %eax -- pushq_cfi %r10 -+ pushq_cfi %r11 - CFI_REL_OFFSET rip,0 - pushq_cfi %rax - cld - SAVE_ARGS 0,1,0 -+ pax_enter_kernel_user -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ -+ /* -+ * No need to follow this irqs on/off section: the syscall -+ * disabled irqs, here we enable it straight after entry: -+ */ -+ ENABLE_INTERRUPTS(CLBR_NONE) - /* no need to do an access_ok check here because rbp has been - 32bit zero extended */ -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ mov $PAX_USER_SHADOW_BASE,%r11 -+ add %r11,%rbp -+#endif -+ - 1: movl (%rbp),%ebp - _ASM_EXTABLE(1b,ia32_badarg) -- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) -- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ GET_THREAD_INFO(%r11) -+ orl $TS_COMPAT,TI_status(%r11) -+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) - CFI_REMEMBER_STATE - jnz sysenter_tracesys - cmpq $(IA32_NR_syscalls-1),%rax -@@ -159,12 +201,15 @@ sysenter_do_call: - sysenter_dispatch: - call *ia32_sys_call_table(,%rax,8) - movq %rax,RAX-ARGOFFSET(%rsp) -+ GET_THREAD_INFO(%r11) - DISABLE_INTERRUPTS(CLBR_NONE) - TRACE_IRQS_OFF -- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $_TIF_ALLWORK_MASK,TI_flags(%r11) - jnz sysexit_audit - sysexit_from_sys_call: -- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ pax_exit_kernel_user -+ pax_erase_kstack -+ andl $~TS_COMPAT,TI_status(%r11) - /* clear IF, that popfq doesn't enable interrupts early */ - andl $~0x200,EFLAGS-R11(%rsp) - movl RIP-R11(%rsp),%edx /* User %eip */ -@@ -190,6 +235,9 @@ sysexit_from_sys_call: - movl %eax,%esi /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */ - call __audit_syscall_entry -+ -+ pax_erase_kstack -+ - movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */ - cmpq $(IA32_NR_syscalls-1),%rax - ja ia32_badsys -@@ -201,7 +249,7 @@ sysexit_from_sys_call: - .endm - - .macro auditsys_exit exit -- testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) - jnz ia32_ret_from_sys_call - TRACE_IRQS_ON - ENABLE_INTERRUPTS(CLBR_NONE) -@@ -212,11 +260,12 @@ sysexit_from_sys_call: - 1: setbe %al /* 1 if error, 0 if not */ - movzbl %al,%edi /* zero-extend that into %edi */ - call __audit_syscall_exit -+ GET_THREAD_INFO(%r11) - movq RAX-ARGOFFSET(%rsp),%rax /* reload syscall return value */ - movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi - DISABLE_INTERRUPTS(CLBR_NONE) - TRACE_IRQS_OFF -- testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl %edi,TI_flags(%r11) - jz \exit - CLEAR_RREGS -ARGOFFSET - jmp int_with_check -@@ -234,7 +283,7 @@ sysexit_audit: - - sysenter_tracesys: - #ifdef CONFIG_AUDITSYSCALL -- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) - jz sysenter_auditsys - #endif - SAVE_REST -@@ -246,6 +295,9 @@ sysenter_tracesys: - RESTORE_REST - cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */ -+ -+ pax_erase_kstack -+ - jmp sysenter_do_call - CFI_ENDPROC - ENDPROC(ia32_sysenter_target) -@@ -273,19 +325,25 @@ ENDPROC(ia32_sysenter_target) - ENTRY(ia32_cstar_target) - CFI_STARTPROC32 simple - CFI_SIGNAL_FRAME -- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET -+ CFI_DEF_CFA rsp,0 - CFI_REGISTER rip,rcx - /*CFI_REGISTER rflags,r11*/ - SWAPGS_UNSAFE_STACK - movl %esp,%r8d - CFI_REGISTER rsp,r8 - movq PER_CPU_VAR(kernel_stack),%rsp -+ SAVE_ARGS 8*6,0,0 -+ pax_enter_kernel_user -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs and here we enable it straight after entry: - */ - ENABLE_INTERRUPTS(CLBR_NONE) -- SAVE_ARGS 8,0,0 - movl %eax,%eax /* zero extension */ - movq %rax,ORIG_RAX-ARGOFFSET(%rsp) - movq %rcx,RIP-ARGOFFSET(%rsp) -@@ -301,10 +359,17 @@ ENTRY(ia32_cstar_target) - /* no need to do an access_ok check here because r8 has been - 32bit zero extended */ - /* hardware stack frame is complete now */ -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ mov $PAX_USER_SHADOW_BASE,%r11 -+ add %r11,%r8 -+#endif -+ - 1: movl (%r8),%r9d - _ASM_EXTABLE(1b,ia32_badarg) -- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) -- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ GET_THREAD_INFO(%r11) -+ orl $TS_COMPAT,TI_status(%r11) -+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) - CFI_REMEMBER_STATE - jnz cstar_tracesys - cmpq $IA32_NR_syscalls-1,%rax -@@ -314,12 +379,15 @@ cstar_do_call: - cstar_dispatch: - call *ia32_sys_call_table(,%rax,8) - movq %rax,RAX-ARGOFFSET(%rsp) -+ GET_THREAD_INFO(%r11) - DISABLE_INTERRUPTS(CLBR_NONE) - TRACE_IRQS_OFF -- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $_TIF_ALLWORK_MASK,TI_flags(%r11) - jnz sysretl_audit - sysretl_from_sys_call: -- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ pax_exit_kernel_user -+ pax_erase_kstack -+ andl $~TS_COMPAT,TI_status(%r11) - RESTORE_ARGS 0,-ARG_SKIP,0,0,0 - movl RIP-ARGOFFSET(%rsp),%ecx - CFI_REGISTER rip,rcx -@@ -347,7 +415,7 @@ sysretl_audit: - - cstar_tracesys: - #ifdef CONFIG_AUDITSYSCALL -- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) - jz cstar_auditsys - #endif - xchgl %r9d,%ebp -@@ -361,6 +429,9 @@ cstar_tracesys: - xchgl %ebp,%r9d - cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */ -+ -+ pax_erase_kstack -+ - jmp cstar_do_call - END(ia32_cstar_target) - -@@ -401,19 +472,26 @@ ENTRY(ia32_syscall) - CFI_REL_OFFSET rip,RIP-RIP - PARAVIRT_ADJUST_EXCEPTION_FRAME - SWAPGS -- /* -- * No need to follow this irqs on/off section: the syscall -- * disabled irqs and here we enable it straight after entry: -- */ -- ENABLE_INTERRUPTS(CLBR_NONE) - movl %eax,%eax - pushq_cfi %rax - cld - /* note the registers are not zero extended to the sf. - this could be a problem. */ - SAVE_ARGS 0,1,0 -- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) -- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ pax_enter_kernel_user -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ -+ /* -+ * No need to follow this irqs on/off section: the syscall -+ * disabled irqs and here we enable it straight after entry: -+ */ -+ ENABLE_INTERRUPTS(CLBR_NONE) -+ GET_THREAD_INFO(%r11) -+ orl $TS_COMPAT,TI_status(%r11) -+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) - jnz ia32_tracesys - cmpq $(IA32_NR_syscalls-1),%rax - ja ia32_badsys -@@ -436,6 +514,9 @@ ia32_tracesys: - RESTORE_REST - cmpq $(IA32_NR_syscalls-1),%rax - ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */ -+ -+ pax_erase_kstack -+ - jmp ia32_do_call - END(ia32_syscall) - -diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c -index 4540bec..714d913 100644 ---- a/arch/x86/ia32/sys_ia32.c -+++ b/arch/x86/ia32/sys_ia32.c -@@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, - */ - static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) - { -- typeof(ubuf->st_uid) uid = 0; -- typeof(ubuf->st_gid) gid = 0; -+ typeof(((struct stat64 *)0)->st_uid) uid = 0; -+ typeof(((struct stat64 *)0)->st_gid) gid = 0; - SET_UID(uid, from_kuid_munged(current_user_ns(), stat->uid)); - SET_GID(gid, from_kgid_munged(current_user_ns(), stat->gid)); - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || -@@ -287,7 +287,7 @@ asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, - return ret; - } - --asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, -+asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int __user *stat_addr, - int options) - { - return compat_sys_wait4(pid, stat_addr, options, NULL); -@@ -303,7 +303,7 @@ asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); -- ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); -+ ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t); - set_fs(old_fs); - if (put_compat_timespec(&t, interval)) - return -EFAULT; -@@ -319,7 +319,7 @@ asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); -- ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); -+ ret = sys_rt_sigpending((sigset_t __force_user *)&s, sigsetsize); - set_fs(old_fs); - if (!ret) { - switch (_NSIG_WORDS) { -@@ -344,7 +344,7 @@ asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, - if (copy_siginfo_from_user32(&info, uinfo)) - return -EFAULT; - set_fs(KERNEL_DS); -- ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); -+ ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force_user *)&info); - set_fs(old_fs); - return ret; - } -@@ -376,7 +376,7 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, - return -EFAULT; - - set_fs(KERNEL_DS); -- ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, -+ ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __force_user *)&of : NULL, - count); - set_fs(old_fs); - -diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h -index 952bd01..7692c6f 100644 ---- a/arch/x86/include/asm/alternative-asm.h -+++ b/arch/x86/include/asm/alternative-asm.h -@@ -15,6 +15,45 @@ - .endm - #endif - -+#ifdef KERNEXEC_PLUGIN -+ .macro pax_force_retaddr_bts rip=0 -+ btsq $63,\rip(%rsp) -+ .endm -+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS -+ .macro pax_force_retaddr rip=0, reload=0 -+ btsq $63,\rip(%rsp) -+ .endm -+ .macro pax_force_fptr ptr -+ btsq $63,\ptr -+ .endm -+ .macro pax_set_fptr_mask -+ .endm -+#endif -+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR -+ .macro pax_force_retaddr rip=0, reload=0 -+ .if \reload -+ pax_set_fptr_mask -+ .endif -+ orq %r10,\rip(%rsp) -+ .endm -+ .macro pax_force_fptr ptr -+ orq %r10,\ptr -+ .endm -+ .macro pax_set_fptr_mask -+ movabs $0x8000000000000000,%r10 -+ .endm -+#endif -+#else -+ .macro pax_force_retaddr rip=0, reload=0 -+ .endm -+ .macro pax_force_fptr ptr -+ .endm -+ .macro pax_force_retaddr_bts rip=0 -+ .endm -+ .macro pax_set_fptr_mask -+ .endm -+#endif -+ - .macro altinstruction_entry orig alt feature orig_len alt_len - .long \orig - . - .long \alt - . -diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h -index 7078068..f58bcda 100644 ---- a/arch/x86/include/asm/alternative.h -+++ b/arch/x86/include/asm/alternative.h -@@ -105,7 +105,7 @@ static inline int alternatives_text_reserved(void *start, void *end) - ".section .discard,\"aw\",@progbits\n" \ - DISCARD_ENTRY(1) \ - ".previous\n" \ -- ".section .altinstr_replacement, \"ax\"\n" \ -+ ".section .altinstr_replacement, \"a\"\n" \ - ALTINSTR_REPLACEMENT(newinstr, feature, 1) \ - ".previous" - -@@ -119,7 +119,7 @@ static inline int alternatives_text_reserved(void *start, void *end) - DISCARD_ENTRY(1) \ - DISCARD_ENTRY(2) \ - ".previous\n" \ -- ".section .altinstr_replacement, \"ax\"\n" \ -+ ".section .altinstr_replacement, \"a\"\n" \ - ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \ - ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \ - ".previous" -diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h -index f342612..b3fe911 100644 ---- a/arch/x86/include/asm/apic.h -+++ b/arch/x86/include/asm/apic.h -@@ -44,7 +44,7 @@ static inline void generic_apic_probe(void) - - #ifdef CONFIG_X86_LOCAL_APIC - --extern unsigned int apic_verbosity; -+extern int apic_verbosity; - extern int local_apic_timer_c2_ok; - - extern int disable_apic; -@@ -391,7 +391,7 @@ struct apic { - */ - int (*x86_32_numa_cpu_node)(int cpu); - #endif --}; -+} __do_const; - - /* - * Pointer to the local APIC driver in use on this system (there's -diff --git a/arch/x86/include/asm/apm.h b/arch/x86/include/asm/apm.h -index 20370c6..a2eb9b0 100644 ---- a/arch/x86/include/asm/apm.h -+++ b/arch/x86/include/asm/apm.h -@@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in, - __asm__ __volatile__(APM_DO_ZERO_SEGS - "pushl %%edi\n\t" - "pushl %%ebp\n\t" -- "lcall *%%cs:apm_bios_entry\n\t" -+ "lcall *%%ss:apm_bios_entry\n\t" - "setc %%al\n\t" - "popl %%ebp\n\t" - "popl %%edi\n\t" -@@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_asm(u32 func, u32 ebx_in, - __asm__ __volatile__(APM_DO_ZERO_SEGS - "pushl %%edi\n\t" - "pushl %%ebp\n\t" -- "lcall *%%cs:apm_bios_entry\n\t" -+ "lcall *%%ss:apm_bios_entry\n\t" - "setc %%bl\n\t" - "popl %%ebp\n\t" - "popl %%edi\n\t" -diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h -index 58cb6d4..a4b806c 100644 ---- a/arch/x86/include/asm/atomic.h -+++ b/arch/x86/include/asm/atomic.h -@@ -22,7 +22,18 @@ - */ - static inline int atomic_read(const atomic_t *v) - { -- return (*(volatile int *)&(v)->counter); -+ return (*(volatile const int *)&(v)->counter); -+} -+ -+/** -+ * atomic_read_unchecked - read atomic variable -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically reads the value of @v. -+ */ -+static inline int atomic_read_unchecked(const atomic_unchecked_t *v) -+{ -+ return (*(volatile const int *)&(v)->counter); - } - - /** -@@ -38,6 +49,18 @@ static inline void atomic_set(atomic_t *v, int i) - } - - /** -+ * atomic_set_unchecked - set atomic variable -+ * @v: pointer of type atomic_unchecked_t -+ * @i: required value -+ * -+ * Atomically sets the value of @v to @i. -+ */ -+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) -+{ -+ v->counter = i; -+} -+ -+/** - * atomic_add - add integer to atomic variable - * @i: integer value to add - * @v: pointer of type atomic_t -@@ -46,7 +69,29 @@ static inline void atomic_set(atomic_t *v, int i) - */ - static inline void atomic_add(int i, atomic_t *v) - { -- asm volatile(LOCK_PREFIX "addl %1,%0" -+ asm volatile(LOCK_PREFIX "addl %1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "subl %1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (v->counter) -+ : "ir" (i)); -+} -+ -+/** -+ * atomic_add_unchecked - add integer to atomic variable -+ * @i: integer value to add -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically adds @i to @v. -+ */ -+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "addl %1,%0\n" - : "+m" (v->counter) - : "ir" (i)); - } -@@ -60,7 +105,29 @@ static inline void atomic_add(int i, atomic_t *v) - */ - static inline void atomic_sub(int i, atomic_t *v) - { -- asm volatile(LOCK_PREFIX "subl %1,%0" -+ asm volatile(LOCK_PREFIX "subl %1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "addl %1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (v->counter) -+ : "ir" (i)); -+} -+ -+/** -+ * atomic_sub_unchecked - subtract integer from atomic variable -+ * @i: integer value to subtract -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically subtracts @i from @v. -+ */ -+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "subl %1,%0\n" - : "+m" (v->counter) - : "ir" (i)); - } -@@ -78,7 +145,16 @@ static inline int atomic_sub_and_test(int i, atomic_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "subl %2,%0; sete %1" -+ asm volatile(LOCK_PREFIX "subl %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "addl %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "+m" (v->counter), "=qm" (c) - : "ir" (i) : "memory"); - return c; -@@ -92,7 +168,27 @@ static inline int atomic_sub_and_test(int i, atomic_t *v) - */ - static inline void atomic_inc(atomic_t *v) - { -- asm volatile(LOCK_PREFIX "incl %0" -+ asm volatile(LOCK_PREFIX "incl %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "decl %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (v->counter)); -+} -+ -+/** -+ * atomic_inc_unchecked - increment atomic variable -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically increments @v by 1. -+ */ -+static inline void atomic_inc_unchecked(atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "incl %0\n" - : "+m" (v->counter)); - } - -@@ -104,7 +200,27 @@ static inline void atomic_inc(atomic_t *v) - */ - static inline void atomic_dec(atomic_t *v) - { -- asm volatile(LOCK_PREFIX "decl %0" -+ asm volatile(LOCK_PREFIX "decl %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "incl %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (v->counter)); -+} -+ -+/** -+ * atomic_dec_unchecked - decrement atomic variable -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically decrements @v by 1. -+ */ -+static inline void atomic_dec_unchecked(atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "decl %0\n" - : "+m" (v->counter)); - } - -@@ -120,7 +236,16 @@ static inline int atomic_dec_and_test(atomic_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "decl %0; sete %1" -+ asm volatile(LOCK_PREFIX "decl %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "incl %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "+m" (v->counter), "=qm" (c) - : : "memory"); - return c != 0; -@@ -138,7 +263,35 @@ static inline int atomic_inc_and_test(atomic_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "incl %0; sete %1" -+ asm volatile(LOCK_PREFIX "incl %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "decl %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" -+ : "+m" (v->counter), "=qm" (c) -+ : : "memory"); -+ return c != 0; -+} -+ -+/** -+ * atomic_inc_and_test_unchecked - increment and test -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically increments @v by 1 -+ * and returns true if the result is zero, or false for all -+ * other cases. -+ */ -+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) -+{ -+ unsigned char c; -+ -+ asm volatile(LOCK_PREFIX "incl %0\n" -+ "sete %1\n" - : "+m" (v->counter), "=qm" (c) - : : "memory"); - return c != 0; -@@ -157,7 +310,16 @@ static inline int atomic_add_negative(int i, atomic_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "addl %2,%0; sets %1" -+ asm volatile(LOCK_PREFIX "addl %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "subl %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sets %1\n" - : "+m" (v->counter), "=qm" (c) - : "ir" (i) : "memory"); - return c; -@@ -179,7 +341,7 @@ static inline int atomic_add_return(int i, atomic_t *v) - goto no_xadd; - #endif - /* Modern 486+ processor */ -- return i + xadd(&v->counter, i); -+ return i + xadd_check_overflow(&v->counter, i); - - #ifdef CONFIG_M386 - no_xadd: /* Legacy 386 processor */ -@@ -192,6 +354,34 @@ no_xadd: /* Legacy 386 processor */ - } - - /** -+ * atomic_add_return_unchecked - add integer and return -+ * @i: integer value to add -+ * @v: pointer of type atomic_unchecked_t -+ * -+ * Atomically adds @i to @v and returns @i + @v -+ */ -+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) -+{ -+#ifdef CONFIG_M386 -+ int __i; -+ unsigned long flags; -+ if (unlikely(boot_cpu_data.x86 <= 3)) -+ goto no_xadd; -+#endif -+ /* Modern 486+ processor */ -+ return i + xadd(&v->counter, i); -+ -+#ifdef CONFIG_M386 -+no_xadd: /* Legacy 386 processor */ -+ raw_local_irq_save(flags); -+ __i = atomic_read_unchecked(v); -+ atomic_set_unchecked(v, i + __i); -+ raw_local_irq_restore(flags); -+ return i + __i; -+#endif -+} -+ -+/** - * atomic_sub_return - subtract integer and return - * @v: pointer of type atomic_t - * @i: integer value to subtract -@@ -204,6 +394,10 @@ static inline int atomic_sub_return(int i, atomic_t *v) - } - - #define atomic_inc_return(v) (atomic_add_return(1, v)) -+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) -+{ -+ return atomic_add_return_unchecked(1, v); -+} - #define atomic_dec_return(v) (atomic_sub_return(1, v)) - - static inline int atomic_cmpxchg(atomic_t *v, int old, int new) -@@ -211,11 +405,21 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) - return cmpxchg(&v->counter, old, new); - } - -+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) -+{ -+ return cmpxchg(&v->counter, old, new); -+} -+ - static inline int atomic_xchg(atomic_t *v, int new) - { - return xchg(&v->counter, new); - } - -+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) -+{ -+ return xchg(&v->counter, new); -+} -+ - /** - * __atomic_add_unless - add unless the number is already a given value - * @v: pointer of type atomic_t -@@ -227,12 +431,25 @@ static inline int atomic_xchg(atomic_t *v, int new) - */ - static inline int __atomic_add_unless(atomic_t *v, int a, int u) - { -- int c, old; -+ int c, old, new; - c = atomic_read(v); - for (;;) { -- if (unlikely(c == (u))) -+ if (unlikely(c == u)) - break; -- old = atomic_cmpxchg((v), c, c + (a)); -+ -+ asm volatile("addl %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "subl %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=r" (new) -+ : "0" (c), "ir" (a)); -+ -+ old = atomic_cmpxchg(v, c, new); - if (likely(old == c)) - break; - c = old; -@@ -240,6 +457,48 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) - return c; - } - -+/** -+ * atomic_inc_not_zero_hint - increment if not null -+ * @v: pointer of type atomic_t -+ * @hint: probable value of the atomic before the increment -+ * -+ * This version of atomic_inc_not_zero() gives a hint of probable -+ * value of the atomic. This helps processor to not read the memory -+ * before doing the atomic read/modify/write cycle, lowering -+ * number of bus transactions on some arches. -+ * -+ * Returns: 0 if increment was not done, 1 otherwise. -+ */ -+#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint -+static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint) -+{ -+ int val, c = hint, new; -+ -+ /* sanity test, should be removed by compiler if hint is a constant */ -+ if (!hint) -+ return __atomic_add_unless(v, 1, 0); -+ -+ do { -+ asm volatile("incl %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "decl %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=r" (new) -+ : "0" (c)); -+ -+ val = atomic_cmpxchg(v, c, new); -+ if (val == c) -+ return 1; -+ c = val; -+ } while (c); -+ -+ return 0; -+} - - /* - * atomic_dec_if_positive - decrement by 1 if old value positive -@@ -293,14 +552,37 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2) - #endif - - /* These are x86-specific, used by some header files */ --#define atomic_clear_mask(mask, addr) \ -- asm volatile(LOCK_PREFIX "andl %0,%1" \ -- : : "r" (~(mask)), "m" (*(addr)) : "memory") -- --#define atomic_set_mask(mask, addr) \ -- asm volatile(LOCK_PREFIX "orl %0,%1" \ -- : : "r" ((unsigned)(mask)), "m" (*(addr)) \ -- : "memory") -+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) -+{ -+ asm volatile(LOCK_PREFIX "andl %1,%0" -+ : "+m" (v->counter) -+ : "r" (~(mask)) -+ : "memory"); -+} -+ -+static inline void atomic_clear_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "andl %1,%0" -+ : "+m" (v->counter) -+ : "r" (~(mask)) -+ : "memory"); -+} -+ -+static inline void atomic_set_mask(unsigned int mask, atomic_t *v) -+{ -+ asm volatile(LOCK_PREFIX "orl %1,%0" -+ : "+m" (v->counter) -+ : "r" (mask) -+ : "memory"); -+} -+ -+static inline void atomic_set_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "orl %1,%0" -+ : "+m" (v->counter) -+ : "r" (mask) -+ : "memory"); -+} - - /* Atomic operations are already serializing on x86 */ - #define smp_mb__before_atomic_dec() barrier() -diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h -index b154de7..aadebd8 100644 ---- a/arch/x86/include/asm/atomic64_32.h -+++ b/arch/x86/include/asm/atomic64_32.h -@@ -12,6 +12,14 @@ typedef struct { - u64 __aligned(8) counter; - } atomic64_t; - -+#ifdef CONFIG_PAX_REFCOUNT -+typedef struct { -+ u64 __aligned(8) counter; -+} atomic64_unchecked_t; -+#else -+typedef atomic64_t atomic64_unchecked_t; -+#endif -+ - #define ATOMIC64_INIT(val) { (val) } - - #define __ATOMIC64_DECL(sym) void atomic64_##sym(atomic64_t *, ...) -@@ -37,21 +45,31 @@ typedef struct { - ATOMIC64_DECL_ONE(sym##_386) - - ATOMIC64_DECL_ONE(add_386); -+ATOMIC64_DECL_ONE(add_unchecked_386); - ATOMIC64_DECL_ONE(sub_386); -+ATOMIC64_DECL_ONE(sub_unchecked_386); - ATOMIC64_DECL_ONE(inc_386); -+ATOMIC64_DECL_ONE(inc_unchecked_386); - ATOMIC64_DECL_ONE(dec_386); -+ATOMIC64_DECL_ONE(dec_unchecked_386); - #endif - - #define alternative_atomic64(f, out, in...) \ - __alternative_atomic64(f, f, ASM_OUTPUT2(out), ## in) - - ATOMIC64_DECL(read); -+ATOMIC64_DECL(read_unchecked); - ATOMIC64_DECL(set); -+ATOMIC64_DECL(set_unchecked); - ATOMIC64_DECL(xchg); - ATOMIC64_DECL(add_return); -+ATOMIC64_DECL(add_return_unchecked); - ATOMIC64_DECL(sub_return); -+ATOMIC64_DECL(sub_return_unchecked); - ATOMIC64_DECL(inc_return); -+ATOMIC64_DECL(inc_return_unchecked); - ATOMIC64_DECL(dec_return); -+ATOMIC64_DECL(dec_return_unchecked); - ATOMIC64_DECL(dec_if_positive); - ATOMIC64_DECL(inc_not_zero); - ATOMIC64_DECL(add_unless); -@@ -77,6 +95,21 @@ static inline long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n - } - - /** -+ * atomic64_cmpxchg_unchecked - cmpxchg atomic64 variable -+ * @p: pointer to type atomic64_unchecked_t -+ * @o: expected value -+ * @n: new value -+ * -+ * Atomically sets @v to @n if it was equal to @o and returns -+ * the old value. -+ */ -+ -+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long long o, long long n) -+{ -+ return cmpxchg64(&v->counter, o, n); -+} -+ -+/** - * atomic64_xchg - xchg atomic64 variable - * @v: pointer to type atomic64_t - * @n: value to assign -@@ -112,6 +145,22 @@ static inline void atomic64_set(atomic64_t *v, long long i) - } - - /** -+ * atomic64_set_unchecked - set atomic64 variable -+ * @v: pointer to type atomic64_unchecked_t -+ * @n: value to assign -+ * -+ * Atomically sets the value of @v to @n. -+ */ -+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i) -+{ -+ unsigned high = (unsigned)(i >> 32); -+ unsigned low = (unsigned)i; -+ alternative_atomic64(set, /* no output */, -+ "S" (v), "b" (low), "c" (high) -+ : "eax", "edx", "memory"); -+} -+ -+/** - * atomic64_read - read atomic64 variable - * @v: pointer to type atomic64_t - * -@@ -125,6 +174,19 @@ static inline long long atomic64_read(const atomic64_t *v) - } - - /** -+ * atomic64_read_unchecked - read atomic64 variable -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically reads the value of @v and returns it. -+ */ -+static inline long long atomic64_read_unchecked(atomic64_unchecked_t *v) -+{ -+ long long r; -+ alternative_atomic64(read, "=&A" (r), "c" (v) : "memory"); -+ return r; -+ } -+ -+/** - * atomic64_add_return - add and return - * @i: integer value to add - * @v: pointer to type atomic64_t -@@ -139,6 +201,21 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v) - return i; - } - -+/** -+ * atomic64_add_return_unchecked - add and return -+ * @i: integer value to add -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically adds @i to @v and returns @i + *@v -+ */ -+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v) -+{ -+ alternative_atomic64(add_return_unchecked, -+ ASM_OUTPUT2("+A" (i), "+c" (v)), -+ ASM_NO_INPUT_CLOBBER("memory")); -+ return i; -+} -+ - /* - * Other variants with different arithmetic operators: - */ -@@ -158,6 +235,14 @@ static inline long long atomic64_inc_return(atomic64_t *v) - return a; - } - -+static inline long long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) -+{ -+ long long a; -+ alternative_atomic64(inc_return_unchecked, "=&A" (a), -+ "S" (v) : "memory", "ecx"); -+ return a; -+} -+ - static inline long long atomic64_dec_return(atomic64_t *v) - { - long long a; -@@ -182,6 +267,21 @@ static inline long long atomic64_add(long long i, atomic64_t *v) - } - - /** -+ * atomic64_add_unchecked - add integer to atomic64 variable -+ * @i: integer value to add -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically adds @i to @v. -+ */ -+static inline long long atomic64_add_unchecked(long long i, atomic64_unchecked_t *v) -+{ -+ __alternative_atomic64(add_unchecked, add_return_unchecked, -+ ASM_OUTPUT2("+A" (i), "+c" (v)), -+ ASM_NO_INPUT_CLOBBER("memory")); -+ return i; -+} -+ -+/** - * atomic64_sub - subtract the atomic64 variable - * @i: integer value to subtract - * @v: pointer to type atomic64_t -diff --git a/arch/x86/include/asm/atomic64_64.h b/arch/x86/include/asm/atomic64_64.h -index 0e1cbfc..5623683 100644 ---- a/arch/x86/include/asm/atomic64_64.h -+++ b/arch/x86/include/asm/atomic64_64.h -@@ -18,7 +18,19 @@ - */ - static inline long atomic64_read(const atomic64_t *v) - { -- return (*(volatile long *)&(v)->counter); -+ return (*(volatile const long *)&(v)->counter); -+} -+ -+/** -+ * atomic64_read_unchecked - read atomic64 variable -+ * @v: pointer of type atomic64_unchecked_t -+ * -+ * Atomically reads the value of @v. -+ * Doesn't imply a read memory barrier. -+ */ -+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) -+{ -+ return (*(volatile const long *)&(v)->counter); - } - - /** -@@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64_t *v, long i) - } - - /** -+ * atomic64_set_unchecked - set atomic64 variable -+ * @v: pointer to type atomic64_unchecked_t -+ * @i: required value -+ * -+ * Atomically sets the value of @v to @i. -+ */ -+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) -+{ -+ v->counter = i; -+} -+ -+/** - * atomic64_add - add integer to atomic64 variable - * @i: integer value to add - * @v: pointer to type atomic64_t -@@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64_t *v, long i) - */ - static inline void atomic64_add(long i, atomic64_t *v) - { -+ asm volatile(LOCK_PREFIX "addq %1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "subq %1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=m" (v->counter) -+ : "er" (i), "m" (v->counter)); -+} -+ -+/** -+ * atomic64_add_unchecked - add integer to atomic64 variable -+ * @i: integer value to add -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically adds @i to @v. -+ */ -+static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v) -+{ - asm volatile(LOCK_PREFIX "addq %1,%0" - : "=m" (v->counter) - : "er" (i), "m" (v->counter)); -@@ -56,7 +102,29 @@ static inline void atomic64_add(long i, atomic64_t *v) - */ - static inline void atomic64_sub(long i, atomic64_t *v) - { -- asm volatile(LOCK_PREFIX "subq %1,%0" -+ asm volatile(LOCK_PREFIX "subq %1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "addq %1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=m" (v->counter) -+ : "er" (i), "m" (v->counter)); -+} -+ -+/** -+ * atomic64_sub_unchecked - subtract the atomic64 variable -+ * @i: integer value to subtract -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically subtracts @i from @v. -+ */ -+static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "subq %1,%0\n" - : "=m" (v->counter) - : "er" (i), "m" (v->counter)); - } -@@ -74,7 +142,16 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "subq %2,%0; sete %1" -+ asm volatile(LOCK_PREFIX "subq %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "addq %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "=m" (v->counter), "=qm" (c) - : "er" (i), "m" (v->counter) : "memory"); - return c; -@@ -88,6 +165,27 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v) - */ - static inline void atomic64_inc(atomic64_t *v) - { -+ asm volatile(LOCK_PREFIX "incq %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "decq %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=m" (v->counter) -+ : "m" (v->counter)); -+} -+ -+/** -+ * atomic64_inc_unchecked - increment atomic64 variable -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically increments @v by 1. -+ */ -+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) -+{ - asm volatile(LOCK_PREFIX "incq %0" - : "=m" (v->counter) - : "m" (v->counter)); -@@ -101,7 +199,28 @@ static inline void atomic64_inc(atomic64_t *v) - */ - static inline void atomic64_dec(atomic64_t *v) - { -- asm volatile(LOCK_PREFIX "decq %0" -+ asm volatile(LOCK_PREFIX "decq %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "incq %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=m" (v->counter) -+ : "m" (v->counter)); -+} -+ -+/** -+ * atomic64_dec_unchecked - decrement atomic64 variable -+ * @v: pointer to type atomic64_t -+ * -+ * Atomically decrements @v by 1. -+ */ -+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) -+{ -+ asm volatile(LOCK_PREFIX "decq %0\n" - : "=m" (v->counter) - : "m" (v->counter)); - } -@@ -118,7 +237,16 @@ static inline int atomic64_dec_and_test(atomic64_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "decq %0; sete %1" -+ asm volatile(LOCK_PREFIX "decq %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "incq %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "=m" (v->counter), "=qm" (c) - : "m" (v->counter) : "memory"); - return c != 0; -@@ -136,7 +264,16 @@ static inline int atomic64_inc_and_test(atomic64_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "incq %0; sete %1" -+ asm volatile(LOCK_PREFIX "incq %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "decq %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "=m" (v->counter), "=qm" (c) - : "m" (v->counter) : "memory"); - return c != 0; -@@ -155,7 +292,16 @@ static inline int atomic64_add_negative(long i, atomic64_t *v) - { - unsigned char c; - -- asm volatile(LOCK_PREFIX "addq %2,%0; sets %1" -+ asm volatile(LOCK_PREFIX "addq %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX "subq %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sets %1\n" - : "=m" (v->counter), "=qm" (c) - : "er" (i), "m" (v->counter) : "memory"); - return c; -@@ -170,6 +316,18 @@ static inline int atomic64_add_negative(long i, atomic64_t *v) - */ - static inline long atomic64_add_return(long i, atomic64_t *v) - { -+ return i + xadd_check_overflow(&v->counter, i); -+} -+ -+/** -+ * atomic64_add_return_unchecked - add and return -+ * @i: integer value to add -+ * @v: pointer to type atomic64_unchecked_t -+ * -+ * Atomically adds @i to @v and returns @i + @v -+ */ -+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) -+{ - return i + xadd(&v->counter, i); - } - -@@ -179,6 +337,10 @@ static inline long atomic64_sub_return(long i, atomic64_t *v) - } - - #define atomic64_inc_return(v) (atomic64_add_return(1, (v))) -+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) -+{ -+ return atomic64_add_return_unchecked(1, v); -+} - #define atomic64_dec_return(v) (atomic64_sub_return(1, (v))) - - static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) -@@ -186,6 +348,11 @@ static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) - return cmpxchg(&v->counter, old, new); - } - -+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new) -+{ -+ return cmpxchg(&v->counter, old, new); -+} -+ - static inline long atomic64_xchg(atomic64_t *v, long new) - { - return xchg(&v->counter, new); -@@ -202,17 +369,30 @@ static inline long atomic64_xchg(atomic64_t *v, long new) - */ - static inline int atomic64_add_unless(atomic64_t *v, long a, long u) - { -- long c, old; -+ long c, old, new; - c = atomic64_read(v); - for (;;) { -- if (unlikely(c == (u))) -+ if (unlikely(c == u)) - break; -- old = atomic64_cmpxchg((v), c, c + (a)); -+ -+ asm volatile("add %2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "sub %2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "=r" (new) -+ : "0" (c), "ir" (a)); -+ -+ old = atomic64_cmpxchg(v, c, new); - if (likely(old == c)) - break; - c = old; - } -- return c != (u); -+ return c != u; - } - - #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) -diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h -index 72f5009..2f8b9a9 100644 ---- a/arch/x86/include/asm/bitops.h -+++ b/arch/x86/include/asm/bitops.h -@@ -40,7 +40,7 @@ - * a mask operation on a byte. - */ - #define IS_IMMEDIATE(nr) (__builtin_constant_p(nr)) --#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((void *)(addr) + ((nr)>>3)) -+#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((volatile void *)(addr) + ((nr)>>3)) - #define CONST_MASK(nr) (1 << ((nr) & 7)) - - /** -diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h -index b13fe63..0dab13a 100644 ---- a/arch/x86/include/asm/boot.h -+++ b/arch/x86/include/asm/boot.h -@@ -11,10 +11,15 @@ - #include - - /* Physical address where kernel should be loaded. */ --#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ -+#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ - + (CONFIG_PHYSICAL_ALIGN - 1)) \ - & ~(CONFIG_PHYSICAL_ALIGN - 1)) - -+#ifndef __ASSEMBLY__ -+extern unsigned char __LOAD_PHYSICAL_ADDR[]; -+#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR) -+#endif -+ - /* Minimum kernel alignment, as a power of two */ - #ifdef CONFIG_X86_64 - #define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT -diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h -index 48f99f1..d78ebf9 100644 ---- a/arch/x86/include/asm/cache.h -+++ b/arch/x86/include/asm/cache.h -@@ -5,12 +5,13 @@ - - /* L1 cache line size */ - #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) --#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) -+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) - - #define __read_mostly __attribute__((__section__(".data..read_mostly"))) -+#define __read_only __attribute__((__section__(".data..read_only"))) - - #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT --#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) -+#define INTERNODE_CACHE_BYTES (_AC(1,UL) << INTERNODE_CACHE_SHIFT) - - #ifdef CONFIG_X86_VSMP - #ifdef CONFIG_SMP -diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h -index 9863ee3..4a1f8e1 100644 ---- a/arch/x86/include/asm/cacheflush.h -+++ b/arch/x86/include/asm/cacheflush.h -@@ -27,7 +27,7 @@ static inline unsigned long get_page_memtype(struct page *pg) - unsigned long pg_flags = pg->flags & _PGMT_MASK; - - if (pg_flags == _PGMT_DEFAULT) -- return -1; -+ return ~0UL; - else if (pg_flags == _PGMT_WC) - return _PAGE_CACHE_WC; - else if (pg_flags == _PGMT_UC_MINUS) -diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h -index 46fc474..b02b0f9 100644 ---- a/arch/x86/include/asm/checksum_32.h -+++ b/arch/x86/include/asm/checksum_32.h -@@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, - int len, __wsum sum, - int *src_err_ptr, int *dst_err_ptr); - -+asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst, -+ int len, __wsum sum, -+ int *src_err_ptr, int *dst_err_ptr); -+ -+asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst, -+ int len, __wsum sum, -+ int *src_err_ptr, int *dst_err_ptr); -+ - /* - * Note: when you get a NULL pointer exception here this means someone - * passed in an incorrect kernel address to one of these functions. -@@ -50,7 +58,7 @@ static inline __wsum csum_partial_copy_from_user(const void __user *src, - int *err_ptr) - { - might_sleep(); -- return csum_partial_copy_generic((__force void *)src, dst, -+ return csum_partial_copy_generic_from_user((__force void *)src, dst, - len, sum, err_ptr, NULL); - } - -@@ -178,7 +186,7 @@ static inline __wsum csum_and_copy_to_user(const void *src, - { - might_sleep(); - if (access_ok(VERIFY_WRITE, dst, len)) -- return csum_partial_copy_generic(src, (__force void *)dst, -+ return csum_partial_copy_generic_to_user(src, (__force void *)dst, - len, sum, NULL, err_ptr); - - if (len) -diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h -index 99480e5..d81165b 100644 ---- a/arch/x86/include/asm/cmpxchg.h -+++ b/arch/x86/include/asm/cmpxchg.h -@@ -14,8 +14,12 @@ extern void __cmpxchg_wrong_size(void) - __compiletime_error("Bad argument size for cmpxchg"); - extern void __xadd_wrong_size(void) - __compiletime_error("Bad argument size for xadd"); -+extern void __xadd_check_overflow_wrong_size(void) -+ __compiletime_error("Bad argument size for xadd_check_overflow"); - extern void __add_wrong_size(void) - __compiletime_error("Bad argument size for add"); -+extern void __add_check_overflow_wrong_size(void) -+ __compiletime_error("Bad argument size for add_check_overflow"); - - /* - * Constants for operation sizes. On 32-bit, the 64-bit size it set to -@@ -67,6 +71,34 @@ extern void __add_wrong_size(void) - __ret; \ - }) - -+#define __xchg_op_check_overflow(ptr, arg, op, lock) \ -+ ({ \ -+ __typeof__ (*(ptr)) __ret = (arg); \ -+ switch (sizeof(*(ptr))) { \ -+ case __X86_CASE_L: \ -+ asm volatile (lock #op "l %0, %1\n" \ -+ "jno 0f\n" \ -+ "mov %0,%1\n" \ -+ "int $4\n0:\n" \ -+ _ASM_EXTABLE(0b, 0b) \ -+ : "+r" (__ret), "+m" (*(ptr)) \ -+ : : "memory", "cc"); \ -+ break; \ -+ case __X86_CASE_Q: \ -+ asm volatile (lock #op "q %q0, %1\n" \ -+ "jno 0f\n" \ -+ "mov %0,%1\n" \ -+ "int $4\n0:\n" \ -+ _ASM_EXTABLE(0b, 0b) \ -+ : "+r" (__ret), "+m" (*(ptr)) \ -+ : : "memory", "cc"); \ -+ break; \ -+ default: \ -+ __ ## op ## _check_overflow_wrong_size(); \ -+ } \ -+ __ret; \ -+ }) -+ - /* - * Note: no "lock" prefix even on SMP: xchg always implies lock anyway. - * Since this is generally used to protect other memory information, we -@@ -167,6 +199,9 @@ extern void __add_wrong_size(void) - #define xadd_sync(ptr, inc) __xadd((ptr), (inc), "lock; ") - #define xadd_local(ptr, inc) __xadd((ptr), (inc), "") - -+#define __xadd_check_overflow(ptr, inc, lock) __xchg_op_check_overflow((ptr), (inc), xadd, lock) -+#define xadd_check_overflow(ptr, inc) __xadd_check_overflow((ptr), (inc), LOCK_PREFIX) -+ - #define __add(ptr, inc, lock) \ - ({ \ - __typeof__ (*(ptr)) __ret = (inc); \ -diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h -index 6b7ee5f..9d664b3 100644 ---- a/arch/x86/include/asm/cpufeature.h -+++ b/arch/x86/include/asm/cpufeature.h -@@ -202,13 +202,14 @@ - #define X86_FEATURE_BMI1 (9*32+ 3) /* 1st group bit manipulation extensions */ - #define X86_FEATURE_HLE (9*32+ 4) /* Hardware Lock Elision */ - #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */ --#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Protection */ -+#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Prevention */ - #define X86_FEATURE_BMI2 (9*32+ 8) /* 2nd group bit manipulation extensions */ - #define X86_FEATURE_ERMS (9*32+ 9) /* Enhanced REP MOVSB/STOSB */ - #define X86_FEATURE_INVPCID (9*32+10) /* Invalidate Processor Context ID */ - #define X86_FEATURE_RTM (9*32+11) /* Restricted Transactional Memory */ - #define X86_FEATURE_RDSEED (9*32+18) /* The RDSEED instruction */ - #define X86_FEATURE_ADX (9*32+19) /* The ADCX and ADOX instructions */ -+#define X86_FEATURE_SMAP (9*32+20) /* Supervisor Mode Access Prevention */ - - #if defined(__KERNEL__) && !defined(__ASSEMBLY__) - -@@ -373,7 +374,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit) - ".section .discard,\"aw\",@progbits\n" - " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ - ".previous\n" -- ".section .altinstr_replacement,\"ax\"\n" -+ ".section .altinstr_replacement,\"a\"\n" - "3: movb $1,%0\n" - "4:\n" - ".previous\n" -diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h -index 8bf1c06..f723dfd 100644 ---- a/arch/x86/include/asm/desc.h -+++ b/arch/x86/include/asm/desc.h -@@ -4,6 +4,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -17,6 +18,7 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in - - desc->type = (info->read_exec_only ^ 1) << 1; - desc->type |= info->contents << 2; -+ desc->type |= info->seg_not_present ^ 1; - - desc->s = 1; - desc->dpl = 0x3; -@@ -35,19 +37,14 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in - } - - extern struct desc_ptr idt_descr; --extern gate_desc idt_table[]; - extern struct desc_ptr nmi_idt_descr; --extern gate_desc nmi_idt_table[]; -- --struct gdt_page { -- struct desc_struct gdt[GDT_ENTRIES]; --} __attribute__((aligned(PAGE_SIZE))); -- --DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); -+extern gate_desc idt_table[256]; -+extern gate_desc nmi_idt_table[256]; - -+extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)]; - static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) - { -- return per_cpu(gdt_page, cpu).gdt; -+ return cpu_gdt_table[cpu]; - } - - #ifdef CONFIG_X86_64 -@@ -72,8 +69,14 @@ static inline void pack_gate(gate_desc *gate, unsigned char type, - unsigned long base, unsigned dpl, unsigned flags, - unsigned short seg) - { -- gate->a = (seg << 16) | (base & 0xffff); -- gate->b = (base & 0xffff0000) | (((0x80 | type | (dpl << 5)) & 0xff) << 8); -+ gate->gate.offset_low = base; -+ gate->gate.seg = seg; -+ gate->gate.reserved = 0; -+ gate->gate.type = type; -+ gate->gate.s = 0; -+ gate->gate.dpl = dpl; -+ gate->gate.p = 1; -+ gate->gate.offset_high = base >> 16; - } - - #endif -@@ -118,12 +121,16 @@ static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) - - static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate) - { -+ pax_open_kernel(); - memcpy(&idt[entry], gate, sizeof(*gate)); -+ pax_close_kernel(); - } - - static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc) - { -+ pax_open_kernel(); - memcpy(&ldt[entry], desc, 8); -+ pax_close_kernel(); - } - - static inline void -@@ -137,7 +144,9 @@ native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int - default: size = sizeof(*gdt); break; - } - -+ pax_open_kernel(); - memcpy(&gdt[entry], desc, size); -+ pax_close_kernel(); - } - - static inline void pack_descriptor(struct desc_struct *desc, unsigned long base, -@@ -210,7 +219,9 @@ static inline void native_set_ldt(const void *addr, unsigned int entries) - - static inline void native_load_tr_desc(void) - { -+ pax_open_kernel(); - asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8)); -+ pax_close_kernel(); - } - - static inline void native_load_gdt(const struct desc_ptr *dtr) -@@ -247,8 +258,10 @@ static inline void native_load_tls(struct thread_struct *t, unsigned int cpu) - struct desc_struct *gdt = get_cpu_gdt_table(cpu); - unsigned int i; - -+ pax_open_kernel(); - for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++) - gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]; -+ pax_close_kernel(); - } - - #define _LDT_empty(info) \ -@@ -311,7 +324,7 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit) - } - - #ifdef CONFIG_X86_64 --static inline void set_nmi_gate(int gate, void *addr) -+static inline void set_nmi_gate(int gate, const void *addr) - { - gate_desc s; - -@@ -320,7 +333,7 @@ static inline void set_nmi_gate(int gate, void *addr) - } - #endif - --static inline void _set_gate(int gate, unsigned type, void *addr, -+static inline void _set_gate(int gate, unsigned type, const void *addr, - unsigned dpl, unsigned ist, unsigned seg) - { - gate_desc s; -@@ -339,7 +352,7 @@ static inline void _set_gate(int gate, unsigned type, void *addr, - * Pentium F0 0F bugfix can have resulted in the mapped - * IDT being write-protected. - */ --static inline void set_intr_gate(unsigned int n, void *addr) -+static inline void set_intr_gate(unsigned int n, const void *addr) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS); -@@ -369,19 +382,19 @@ static inline void alloc_intr_gate(unsigned int n, void *addr) - /* - * This routine sets up an interrupt gate at directory privilege level 3. - */ --static inline void set_system_intr_gate(unsigned int n, void *addr) -+static inline void set_system_intr_gate(unsigned int n, const void *addr) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS); - } - --static inline void set_system_trap_gate(unsigned int n, void *addr) -+static inline void set_system_trap_gate(unsigned int n, const void *addr) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS); - } - --static inline void set_trap_gate(unsigned int n, void *addr) -+static inline void set_trap_gate(unsigned int n, const void *addr) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS); -@@ -390,19 +403,31 @@ static inline void set_trap_gate(unsigned int n, void *addr) - static inline void set_task_gate(unsigned int n, unsigned int gdt_entry) - { - BUG_ON((unsigned)n > 0xFF); -- _set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3)); -+ _set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3)); - } - --static inline void set_intr_gate_ist(int n, void *addr, unsigned ist) -+static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS); - } - --static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist) -+static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist) - { - BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS); - } - -+#ifdef CONFIG_X86_32 -+static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu) -+{ -+ struct desc_struct d; -+ -+ if (likely(limit)) -+ limit = (limit - 1UL) >> PAGE_SHIFT; -+ pack_descriptor(&d, base, limit, 0xFB, 0xC); -+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S); -+} -+#endif -+ - #endif /* _ASM_X86_DESC_H */ -diff --git a/arch/x86/include/asm/desc_defs.h b/arch/x86/include/asm/desc_defs.h -index 278441f..b95a174 100644 ---- a/arch/x86/include/asm/desc_defs.h -+++ b/arch/x86/include/asm/desc_defs.h -@@ -31,6 +31,12 @@ struct desc_struct { - unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; - unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; - }; -+ struct { -+ u16 offset_low; -+ u16 seg; -+ unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1; -+ unsigned offset_high: 16; -+ } gate; - }; - } __attribute__((packed)); - -diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h -index 3778256..c5d4fce 100644 ---- a/arch/x86/include/asm/e820.h -+++ b/arch/x86/include/asm/e820.h -@@ -69,7 +69,7 @@ struct e820map { - #define ISA_START_ADDRESS 0xa0000 - #define ISA_END_ADDRESS 0x100000 - --#define BIOS_BEGIN 0x000a0000 -+#define BIOS_BEGIN 0x000c0000 - #define BIOS_END 0x00100000 - - #define BIOS_ROM_BASE 0xffe00000 -diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h -index 5939f44..f8845f6 100644 ---- a/arch/x86/include/asm/elf.h -+++ b/arch/x86/include/asm/elf.h -@@ -243,7 +243,25 @@ extern int force_personality32; - the loader. We need to make sure that it is out of the way of the program - that it will "exec", and that there is sufficient room for the brk. */ - -+#ifdef CONFIG_PAX_SEGMEXEC -+#define ELF_ET_DYN_BASE ((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2) -+#else - #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) -+#endif -+ -+#ifdef CONFIG_PAX_ASLR -+#ifdef CONFIG_X86_32 -+#define PAX_ELF_ET_DYN_BASE 0x10000000UL -+ -+#define PAX_DELTA_MMAP_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) -+#define PAX_DELTA_STACK_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) -+#else -+#define PAX_ELF_ET_DYN_BASE 0x400000UL -+ -+#define PAX_DELTA_MMAP_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) -+#define PAX_DELTA_STACK_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) -+#endif -+#endif - - /* This yields a mask that user programs can use to figure out what - instruction set this CPU supports. This could be done in user space, -@@ -296,16 +314,12 @@ do { \ - - #define ARCH_DLINFO \ - do { \ -- if (vdso_enabled) \ -- NEW_AUX_ENT(AT_SYSINFO_EHDR, \ -- (unsigned long)current->mm->context.vdso); \ -+ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \ - } while (0) - - #define ARCH_DLINFO_X32 \ - do { \ -- if (vdso_enabled) \ -- NEW_AUX_ENT(AT_SYSINFO_EHDR, \ -- (unsigned long)current->mm->context.vdso); \ -+ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \ - } while (0) - - #define AT_SYSINFO 32 -@@ -320,7 +334,7 @@ else \ - - #endif /* !CONFIG_X86_32 */ - --#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) -+#define VDSO_CURRENT_BASE (current->mm->context.vdso) - - #define VDSO_ENTRY \ - ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) -@@ -336,9 +350,6 @@ extern int x32_setup_additional_pages(struct linux_binprm *bprm, - extern int syscall32_setup_pages(struct linux_binprm *, int exstack); - #define compat_arch_setup_additional_pages syscall32_setup_pages - --extern unsigned long arch_randomize_brk(struct mm_struct *mm); --#define arch_randomize_brk arch_randomize_brk -- - /* - * True on X86_32 or when emulating IA32 on X86_64 - */ -diff --git a/arch/x86/include/asm/emergency-restart.h b/arch/x86/include/asm/emergency-restart.h -index 75ce3f4..882e801 100644 ---- a/arch/x86/include/asm/emergency-restart.h -+++ b/arch/x86/include/asm/emergency-restart.h -@@ -13,6 +13,6 @@ enum reboot_type { - - extern enum reboot_type reboot_type; - --extern void machine_emergency_restart(void); -+extern void machine_emergency_restart(void) __noreturn; - - #endif /* _ASM_X86_EMERGENCY_RESTART_H */ -diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h -index 04cb0f8..1da4bc9 100644 ---- a/arch/x86/include/asm/fpu-internal.h -+++ b/arch/x86/include/asm/fpu-internal.h -@@ -82,10 +82,12 @@ static inline void sanitize_i387_state(struct task_struct *tsk) - } - - #ifdef CONFIG_X86_64 --static inline int fxrstor_checking(struct i387_fxsave_struct *fx) -+static inline int fxrstor_checking(struct i387_fxsave_struct __user *fx) - { - int err; - -+ fx = (struct i387_fxsave_struct __user *)____m(fx); -+ - /* See comment in fxsave() below. */ - #ifdef CONFIG_AS_FXSAVEQ - asm volatile("1: fxrstorq %[fx]\n\t" -@@ -115,6 +117,8 @@ static inline int fxsave_user(struct i387_fxsave_struct __user *fx) - { - int err; - -+ fx = (struct i387_fxsave_struct __user *)____m(fx); -+ - /* - * Clear the bytes not touched by the fxsave and reserved - * for the SW usage. -@@ -183,15 +187,15 @@ static inline void fpu_fxsave(struct fpu *fpu) - #else /* CONFIG_X86_32 */ - - /* perform fxrstor iff the processor has extended states, otherwise frstor */ --static inline int fxrstor_checking(struct i387_fxsave_struct *fx) -+static inline int fxrstor_checking(struct i387_fxsave_struct __user *fx) - { - /* - * The "nop" is needed to make the instructions the same - * length. - */ - alternative_input( -- "nop ; frstor %1", -- "fxrstor %1", -+ __copyuser_seg" frstor %1; nop", -+ __copyuser_seg" fxrstor %1", - X86_FEATURE_FXSR, - "m" (*fx)); - -@@ -250,7 +254,14 @@ static inline int __save_init_fpu(struct task_struct *tsk) - - static inline int fpu_fxrstor_checking(struct fpu *fpu) - { -- return fxrstor_checking(&fpu->state->fxsave); -+ int ret; -+ mm_segment_t fs; -+ -+ fs = get_fs(); -+ set_fs(KERNEL_DS); -+ ret = fxrstor_checking(&fpu->state->fxsave); -+ set_fs(fs); -+ return ret; - } - - static inline int fpu_restore_checking(struct fpu *fpu) -@@ -271,7 +282,7 @@ static inline int restore_fpu_checking(struct task_struct *tsk) - "emms\n\t" /* clear stack tags */ - "fildl %P[addr]", /* set F?P to defined value */ - X86_FEATURE_FXSAVE_LEAK, -- [addr] "m" (tsk->thread.fpu.has_fpu)); -+ [addr] "m" (init_tss[smp_processor_id()].x86_tss.sp0)); - - return fpu_restore_checking(&tsk->thread.fpu); - } -diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h -index 71ecbcb..11df950 100644 ---- a/arch/x86/include/asm/futex.h -+++ b/arch/x86/include/asm/futex.h -@@ -11,20 +11,22 @@ - #include - - #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \ -+ typecheck(u32 __user *, uaddr); \ - asm volatile("1:\t" insn "\n" \ - "2:\t.section .fixup,\"ax\"\n" \ - "3:\tmov\t%3, %1\n" \ - "\tjmp\t2b\n" \ - "\t.previous\n" \ - _ASM_EXTABLE(1b, 3b) \ -- : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \ -+ : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr))\ - : "i" (-EFAULT), "0" (oparg), "1" (0)) - - #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \ -+ typecheck(u32 __user *, uaddr); \ - asm volatile("1:\tmovl %2, %0\n" \ - "\tmovl\t%0, %3\n" \ - "\t" insn "\n" \ -- "2:\t" LOCK_PREFIX "cmpxchgl %3, %2\n" \ -+ "2:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %3, %2\n" \ - "\tjnz\t1b\n" \ - "3:\t.section .fixup,\"ax\"\n" \ - "4:\tmov\t%5, %1\n" \ -@@ -33,7 +35,7 @@ - _ASM_EXTABLE(1b, 4b) \ - _ASM_EXTABLE(2b, 4b) \ - : "=&a" (oldval), "=&r" (ret), \ -- "+m" (*uaddr), "=&r" (tem) \ -+ "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem) \ - : "r" (oparg), "i" (-EFAULT), "1" (0)) - - static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) -@@ -60,10 +62,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) - - switch (op) { - case FUTEX_OP_SET: -- __futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg); -+ __futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg); - break; - case FUTEX_OP_ADD: -- __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval, -+ __futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval, - uaddr, oparg); - break; - case FUTEX_OP_OR: -@@ -122,13 +124,13 @@ static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) - return -EFAULT; - -- asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n" -+ asm volatile("1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %4, %2\n" - "2:\t.section .fixup, \"ax\"\n" - "3:\tmov %3, %0\n" - "\tjmp 2b\n" - "\t.previous\n" - _ASM_EXTABLE(1b, 3b) -- : "+r" (ret), "=a" (oldval), "+m" (*uaddr) -+ : "+r" (ret), "=a" (oldval), "+m" (*(u32 __user *)____m(uaddr)) - : "i" (-EFAULT), "r" (newval), "1" (oldval) - : "memory" - ); -diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h -index eb92a6e..b98b2f4 100644 ---- a/arch/x86/include/asm/hw_irq.h -+++ b/arch/x86/include/asm/hw_irq.h -@@ -136,8 +136,8 @@ extern void setup_ioapic_dest(void); - extern void enable_IO_APIC(void); - - /* Statistics */ --extern atomic_t irq_err_count; --extern atomic_t irq_mis_count; -+extern atomic_unchecked_t irq_err_count; -+extern atomic_unchecked_t irq_mis_count; - - /* EISA */ - extern void eisa_set_level_irq(unsigned int irq); -diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h -index d8e8eef..99f81ae 100644 ---- a/arch/x86/include/asm/io.h -+++ b/arch/x86/include/asm/io.h -@@ -194,6 +194,17 @@ extern void set_iounmap_nonlazy(void); - - #include - -+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE -+static inline int valid_phys_addr_range(unsigned long addr, size_t count) -+{ -+ return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; -+} -+ -+static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count) -+{ -+ return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; -+} -+ - /* - * Convert a virtual cached pointer to an uncached pointer - */ -diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h -index bba3cf8..06bc8da 100644 ---- a/arch/x86/include/asm/irqflags.h -+++ b/arch/x86/include/asm/irqflags.h -@@ -141,6 +141,11 @@ static inline notrace unsigned long arch_local_irq_save(void) - sti; \ - sysexit - -+#define GET_CR0_INTO_RDI mov %cr0, %rdi -+#define SET_RDI_INTO_CR0 mov %rdi, %cr0 -+#define GET_CR3_INTO_RDI mov %cr3, %rdi -+#define SET_RDI_INTO_CR3 mov %rdi, %cr3 -+ - #else - #define INTERRUPT_RETURN iret - #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit -diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h -index 5478825..839e88c 100644 ---- a/arch/x86/include/asm/kprobes.h -+++ b/arch/x86/include/asm/kprobes.h -@@ -37,13 +37,8 @@ typedef u8 kprobe_opcode_t; - #define RELATIVEJUMP_SIZE 5 - #define RELATIVECALL_OPCODE 0xe8 - #define RELATIVE_ADDR_SIZE 4 --#define MAX_STACK_SIZE 64 --#define MIN_STACK_SIZE(ADDR) \ -- (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \ -- THREAD_SIZE - (unsigned long)(ADDR))) \ -- ? (MAX_STACK_SIZE) \ -- : (((unsigned long)current_thread_info()) + \ -- THREAD_SIZE - (unsigned long)(ADDR))) -+#define MAX_STACK_SIZE 64UL -+#define MIN_STACK_SIZE(ADDR) min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR)) - - #define flush_insn_slot(p) do { } while (0) - -diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h -index 09155d6..d2e6df9 100644 ---- a/arch/x86/include/asm/kvm_host.h -+++ b/arch/x86/include/asm/kvm_host.h -@@ -694,7 +694,7 @@ struct kvm_x86_ops { - int (*check_intercept)(struct kvm_vcpu *vcpu, - struct x86_instruction_info *info, - enum x86_intercept_stage stage); --}; -+} __do_const; - - struct kvm_arch_async_pf { - u32 token; -diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h -index c8bed0d..85c03fd 100644 ---- a/arch/x86/include/asm/local.h -+++ b/arch/x86/include/asm/local.h -@@ -10,33 +10,97 @@ typedef struct { - atomic_long_t a; - } local_t; - -+typedef struct { -+ atomic_long_unchecked_t a; -+} local_unchecked_t; -+ - #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) } - - #define local_read(l) atomic_long_read(&(l)->a) -+#define local_read_unchecked(l) atomic_long_read_unchecked(&(l)->a) - #define local_set(l, i) atomic_long_set(&(l)->a, (i)) -+#define local_set_unchecked(l, i) atomic_long_set_unchecked(&(l)->a, (i)) - - static inline void local_inc(local_t *l) - { -- asm volatile(_ASM_INC "%0" -+ asm volatile(_ASM_INC "%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_DEC "%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (l->a.counter)); -+} -+ -+static inline void local_inc_unchecked(local_unchecked_t *l) -+{ -+ asm volatile(_ASM_INC "%0\n" - : "+m" (l->a.counter)); - } - - static inline void local_dec(local_t *l) - { -- asm volatile(_ASM_DEC "%0" -+ asm volatile(_ASM_DEC "%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_INC "%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (l->a.counter)); -+} -+ -+static inline void local_dec_unchecked(local_unchecked_t *l) -+{ -+ asm volatile(_ASM_DEC "%0\n" - : "+m" (l->a.counter)); - } - - static inline void local_add(long i, local_t *l) - { -- asm volatile(_ASM_ADD "%1,%0" -+ asm volatile(_ASM_ADD "%1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_SUB "%1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (l->a.counter) -+ : "ir" (i)); -+} -+ -+static inline void local_add_unchecked(long i, local_unchecked_t *l) -+{ -+ asm volatile(_ASM_ADD "%1,%0\n" - : "+m" (l->a.counter) - : "ir" (i)); - } - - static inline void local_sub(long i, local_t *l) - { -- asm volatile(_ASM_SUB "%1,%0" -+ asm volatile(_ASM_SUB "%1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_ADD "%1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ : "+m" (l->a.counter) -+ : "ir" (i)); -+} -+ -+static inline void local_sub_unchecked(long i, local_unchecked_t *l) -+{ -+ asm volatile(_ASM_SUB "%1,%0\n" - : "+m" (l->a.counter) - : "ir" (i)); - } -@@ -54,7 +118,16 @@ static inline int local_sub_and_test(long i, local_t *l) - { - unsigned char c; - -- asm volatile(_ASM_SUB "%2,%0; sete %1" -+ asm volatile(_ASM_SUB "%2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_ADD "%2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "+m" (l->a.counter), "=qm" (c) - : "ir" (i) : "memory"); - return c; -@@ -72,7 +145,16 @@ static inline int local_dec_and_test(local_t *l) - { - unsigned char c; - -- asm volatile(_ASM_DEC "%0; sete %1" -+ asm volatile(_ASM_DEC "%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_INC "%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "+m" (l->a.counter), "=qm" (c) - : : "memory"); - return c != 0; -@@ -90,7 +172,16 @@ static inline int local_inc_and_test(local_t *l) - { - unsigned char c; - -- asm volatile(_ASM_INC "%0; sete %1" -+ asm volatile(_ASM_INC "%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_DEC "%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sete %1\n" - : "+m" (l->a.counter), "=qm" (c) - : : "memory"); - return c != 0; -@@ -109,7 +200,16 @@ static inline int local_add_negative(long i, local_t *l) - { - unsigned char c; - -- asm volatile(_ASM_ADD "%2,%0; sets %1" -+ asm volatile(_ASM_ADD "%2,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_SUB "%2,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+ "sets %1\n" - : "+m" (l->a.counter), "=qm" (c) - : "ir" (i) : "memory"); - return c; -@@ -132,7 +232,15 @@ static inline long local_add_return(long i, local_t *l) - #endif - /* Modern 486+ processor */ - __i = i; -- asm volatile(_ASM_XADD "%0, %1;" -+ asm volatile(_ASM_XADD "%0, %1\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ _ASM_MOV "%0,%1\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - : "+r" (i), "+m" (l->a.counter) - : : "memory"); - return i + __i; -@@ -147,6 +255,38 @@ no_xadd: /* Legacy 386 processor */ - #endif - } - -+/** -+ * local_add_return_unchecked - add and return -+ * @i: integer value to add -+ * @l: pointer to type local_unchecked_t -+ * -+ * Atomically adds @i to @l and returns @i + @l -+ */ -+static inline long local_add_return_unchecked(long i, local_unchecked_t *l) -+{ -+ long __i; -+#ifdef CONFIG_M386 -+ unsigned long flags; -+ if (unlikely(boot_cpu_data.x86 <= 3)) -+ goto no_xadd; -+#endif -+ /* Modern 486+ processor */ -+ __i = i; -+ asm volatile(_ASM_XADD "%0, %1\n" -+ : "+r" (i), "+m" (l->a.counter) -+ : : "memory"); -+ return i + __i; -+ -+#ifdef CONFIG_M386 -+no_xadd: /* Legacy 386 processor */ -+ local_irq_save(flags); -+ __i = local_read_unchecked(l); -+ local_set_unchecked(l, i + __i); -+ local_irq_restore(flags); -+ return i + __i; -+#endif -+} -+ - static inline long local_sub_return(long i, local_t *l) - { - return local_add_return(-i, l); -@@ -157,6 +297,8 @@ static inline long local_sub_return(long i, local_t *l) - - #define local_cmpxchg(l, o, n) \ - (cmpxchg_local(&((l)->a.counter), (o), (n))) -+#define local_cmpxchg_unchecked(l, o, n) \ -+ (cmpxchg_local(&((l)->a.counter), (o), (n))) - /* Always has a lock prefix */ - #define local_xchg(l, n) (xchg(&((l)->a.counter), (n))) - -diff --git a/arch/x86/include/asm/mman.h b/arch/x86/include/asm/mman.h -index 593e51d..fa69c9a 100644 ---- a/arch/x86/include/asm/mman.h -+++ b/arch/x86/include/asm/mman.h -@@ -5,4 +5,14 @@ - - #include - -+#ifdef __KERNEL__ -+#ifndef __ASSEMBLY__ -+#ifdef CONFIG_X86_32 -+#define arch_mmap_check i386_mmap_check -+int i386_mmap_check(unsigned long addr, unsigned long len, -+ unsigned long flags); -+#endif -+#endif -+#endif -+ - #endif /* _ASM_X86_MMAN_H */ -diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h -index 5f55e69..e20bfb1 100644 ---- a/arch/x86/include/asm/mmu.h -+++ b/arch/x86/include/asm/mmu.h -@@ -9,7 +9,7 @@ - * we put the segment information here. - */ - typedef struct { -- void *ldt; -+ struct desc_struct *ldt; - int size; - - #ifdef CONFIG_X86_64 -@@ -18,7 +18,19 @@ typedef struct { - #endif - - struct mutex lock; -- void *vdso; -+ unsigned long vdso; -+ -+#ifdef CONFIG_X86_32 -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+ unsigned long user_cs_base; -+ unsigned long user_cs_limit; -+ -+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) -+ cpumask_t cpu_user_cs_mask; -+#endif -+ -+#endif -+#endif - } mm_context_t; - - #ifdef CONFIG_SMP -diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h -index cdbf367..adb37ac 100644 ---- a/arch/x86/include/asm/mmu_context.h -+++ b/arch/x86/include/asm/mmu_context.h -@@ -24,6 +24,18 @@ void destroy_context(struct mm_struct *mm); - - static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) - { -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ unsigned int i; -+ pgd_t *pgd; -+ -+ pax_open_kernel(); -+ pgd = get_cpu_pgd(smp_processor_id()); -+ for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i) -+ set_pgd_batched(pgd+i, native_make_pgd(0)); -+ pax_close_kernel(); -+#endif -+ - #ifdef CONFIG_SMP - if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) - this_cpu_write(cpu_tlbstate.state, TLBSTATE_LAZY); -@@ -34,16 +46,30 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, - struct task_struct *tsk) - { - unsigned cpu = smp_processor_id(); -+#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) -+ int tlbstate = TLBSTATE_OK; -+#endif - - if (likely(prev != next)) { - #ifdef CONFIG_SMP -+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) -+ tlbstate = this_cpu_read(cpu_tlbstate.state); -+#endif - this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK); - this_cpu_write(cpu_tlbstate.active_mm, next); - #endif - cpumask_set_cpu(cpu, mm_cpumask(next)); - - /* Re-load page tables */ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ pax_open_kernel(); -+ __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); -+ __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); -+ pax_close_kernel(); -+ load_cr3(get_cpu_pgd(cpu)); -+#else - load_cr3(next->pgd); -+#endif - - /* stop flush ipis for the previous mm */ - cpumask_clear_cpu(cpu, mm_cpumask(prev)); -@@ -53,9 +79,38 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, - */ - if (unlikely(prev->context.ldt != next->context.ldt)) - load_LDT_nolock(&next->context); -- } -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) -+ if (!(__supported_pte_mask & _PAGE_NX)) { -+ smp_mb__before_clear_bit(); -+ cpu_clear(cpu, prev->context.cpu_user_cs_mask); -+ smp_mb__after_clear_bit(); -+ cpu_set(cpu, next->context.cpu_user_cs_mask); -+ } -+#endif -+ -+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) -+ if (unlikely(prev->context.user_cs_base != next->context.user_cs_base || -+ prev->context.user_cs_limit != next->context.user_cs_limit)) -+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); - #ifdef CONFIG_SMP -+ else if (unlikely(tlbstate != TLBSTATE_OK)) -+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); -+#endif -+#endif -+ -+ } - else { -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ pax_open_kernel(); -+ __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); -+ __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); -+ pax_close_kernel(); -+ load_cr3(get_cpu_pgd(cpu)); -+#endif -+ -+#ifdef CONFIG_SMP - this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK); - BUG_ON(this_cpu_read(cpu_tlbstate.active_mm) != next); - -@@ -64,11 +119,28 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, - * tlb flush IPI delivery. We must reload CR3 - * to make sure to use no freed page tables. - */ -+ -+#ifndef CONFIG_PAX_PER_CPU_PGD - load_cr3(next->pgd); -+#endif -+ - load_LDT_nolock(&next->context); -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) -+ if (!(__supported_pte_mask & _PAGE_NX)) -+ cpu_set(cpu, next->context.cpu_user_cs_mask); -+#endif -+ -+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX))) -+#endif -+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); -+#endif -+ - } -- } - #endif -+ } - } - - #define activate_mm(prev, next) \ -diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h -index 9eae775..c914fea 100644 ---- a/arch/x86/include/asm/module.h -+++ b/arch/x86/include/asm/module.h -@@ -5,6 +5,7 @@ - - #ifdef CONFIG_X86_64 - /* X86_64 does not define MODULE_PROC_FAMILY */ -+#define MODULE_PROC_FAMILY "" - #elif defined CONFIG_M386 - #define MODULE_PROC_FAMILY "386 " - #elif defined CONFIG_M486 -@@ -59,8 +60,20 @@ - #error unknown processor family - #endif - --#ifdef CONFIG_X86_32 --# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY -+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS -+#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS " -+#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR) -+#define MODULE_PAX_KERNEXEC "KERNEXEC_OR " -+#else -+#define MODULE_PAX_KERNEXEC "" - #endif - -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+#define MODULE_PAX_UDEREF "UDEREF " -+#else -+#define MODULE_PAX_UDEREF "" -+#endif -+ -+#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF -+ - #endif /* _ASM_X86_MODULE_H */ -diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h -index 320f7bb..e89f8f8 100644 ---- a/arch/x86/include/asm/page_64_types.h -+++ b/arch/x86/include/asm/page_64_types.h -@@ -56,7 +56,7 @@ void copy_page(void *to, void *from); - - /* duplicated to the one in bootmem.h */ - extern unsigned long max_pfn; --extern unsigned long phys_base; -+extern const unsigned long phys_base; - - extern unsigned long __phys_addr(unsigned long); - #define __phys_reloc_hide(x) (x) -diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h -index a0facf3..c017b15 100644 ---- a/arch/x86/include/asm/paravirt.h -+++ b/arch/x86/include/asm/paravirt.h -@@ -632,6 +632,18 @@ static inline void set_pgd(pgd_t *pgdp, pgd_t pgd) - val); - } - -+static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd) -+{ -+ pgdval_t val = native_pgd_val(pgd); -+ -+ if (sizeof(pgdval_t) > sizeof(long)) -+ PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp, -+ val, (u64)val >> 32); -+ else -+ PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp, -+ val); -+} -+ - static inline void pgd_clear(pgd_t *pgdp) - { - set_pgd(pgdp, __pgd(0)); -@@ -713,6 +725,21 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, - pv_mmu_ops.set_fixmap(idx, phys, flags); - } - -+#ifdef CONFIG_PAX_KERNEXEC -+static inline unsigned long pax_open_kernel(void) -+{ -+ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel); -+} -+ -+static inline unsigned long pax_close_kernel(void) -+{ -+ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel); -+} -+#else -+static inline unsigned long pax_open_kernel(void) { return 0; } -+static inline unsigned long pax_close_kernel(void) { return 0; } -+#endif -+ - #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) - - static inline int arch_spin_is_locked(struct arch_spinlock *lock) -@@ -929,7 +956,7 @@ extern void default_banner(void); - - #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) - #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) --#define PARA_INDIRECT(addr) *%cs:addr -+#define PARA_INDIRECT(addr) *%ss:addr - #endif - - #define INTERRUPT_RETURN \ -@@ -1004,6 +1031,21 @@ extern void default_banner(void); - PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ - CLBR_NONE, \ - jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) -+ -+#define GET_CR0_INTO_RDI \ -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \ -+ mov %rax,%rdi -+ -+#define SET_RDI_INTO_CR0 \ -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) -+ -+#define GET_CR3_INTO_RDI \ -+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3); \ -+ mov %rax,%rdi -+ -+#define SET_RDI_INTO_CR3 \ -+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3) -+ - #endif /* CONFIG_X86_32 */ - - #endif /* __ASSEMBLY__ */ -diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h -index 142236e..6a6b4a6 100644 ---- a/arch/x86/include/asm/paravirt_types.h -+++ b/arch/x86/include/asm/paravirt_types.h -@@ -84,20 +84,20 @@ struct pv_init_ops { - */ - unsigned (*patch)(u8 type, u16 clobber, void *insnbuf, - unsigned long addr, unsigned len); --}; -+} __no_const; - - - struct pv_lazy_ops { - /* Set deferred update mode, used for batching operations. */ - void (*enter)(void); - void (*leave)(void); --}; -+} __no_const; - - struct pv_time_ops { - unsigned long long (*sched_clock)(void); - unsigned long long (*steal_clock)(int cpu); - unsigned long (*get_tsc_khz)(void); --}; -+} __no_const; - - struct pv_cpu_ops { - /* hooks for various privileged instructions */ -@@ -191,7 +191,7 @@ struct pv_cpu_ops { - - void (*start_context_switch)(struct task_struct *prev); - void (*end_context_switch)(struct task_struct *next); --}; -+} __no_const; - - struct pv_irq_ops { - /* -@@ -222,7 +222,7 @@ struct pv_apic_ops { - unsigned long start_eip, - unsigned long start_esp); - #endif --}; -+} __no_const; - - struct pv_mmu_ops { - unsigned long (*read_cr2)(void); -@@ -312,6 +312,7 @@ struct pv_mmu_ops { - struct paravirt_callee_save make_pud; - - void (*set_pgd)(pgd_t *pudp, pgd_t pgdval); -+ void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval); - #endif /* PAGETABLE_LEVELS == 4 */ - #endif /* PAGETABLE_LEVELS >= 3 */ - -@@ -323,6 +324,12 @@ struct pv_mmu_ops { - an mfn. We can tell which is which from the index. */ - void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, - phys_addr_t phys, pgprot_t flags); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ unsigned long (*pax_open_kernel)(void); -+ unsigned long (*pax_close_kernel)(void); -+#endif -+ - }; - - struct arch_spinlock; -@@ -333,7 +340,7 @@ struct pv_lock_ops { - void (*spin_lock_flags)(struct arch_spinlock *lock, unsigned long flags); - int (*spin_trylock)(struct arch_spinlock *lock); - void (*spin_unlock)(struct arch_spinlock *lock); --}; -+} __no_const; - - /* This contains all the paravirt structures: we get a convenient - * number for each function using the offset which we use to indicate -diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h -index b4389a4..7024269 100644 ---- a/arch/x86/include/asm/pgalloc.h -+++ b/arch/x86/include/asm/pgalloc.h -@@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, - pmd_t *pmd, pte_t *pte) - { - paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); -+ set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE)); -+} -+ -+static inline void pmd_populate_user(struct mm_struct *mm, -+ pmd_t *pmd, pte_t *pte) -+{ -+ paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); - set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); - } - -@@ -99,12 +106,22 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, - - #ifdef CONFIG_X86_PAE - extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); -+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) -+{ -+ pud_populate(mm, pudp, pmd); -+} - #else /* !CONFIG_X86_PAE */ - static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) - { - paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); - set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd))); - } -+ -+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -+{ -+ paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); -+ set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd))); -+} - #endif /* CONFIG_X86_PAE */ - - #if PAGETABLE_LEVELS > 3 -@@ -114,6 +131,12 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) - set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud))); - } - -+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) -+{ -+ paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT); -+ set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud))); -+} -+ - static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) - { - return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT); -diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h -index f2b489c..4f7e2e5 100644 ---- a/arch/x86/include/asm/pgtable-2level.h -+++ b/arch/x86/include/asm/pgtable-2level.h -@@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte) - - static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) - { -+ pax_open_kernel(); - *pmdp = pmd; -+ pax_close_kernel(); - } - - static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) -diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h -index 4cc9f2b..5fd9226 100644 ---- a/arch/x86/include/asm/pgtable-3level.h -+++ b/arch/x86/include/asm/pgtable-3level.h -@@ -92,12 +92,16 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) - - static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) - { -+ pax_open_kernel(); - set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd)); -+ pax_close_kernel(); - } - - static inline void native_set_pud(pud_t *pudp, pud_t pud) - { -+ pax_open_kernel(); - set_64bit((unsigned long long *)(pudp), native_pud_val(pud)); -+ pax_close_kernel(); - } - - /* -diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h -index 3f3dd52..ef2b389 100644 ---- a/arch/x86/include/asm/pgtable.h -+++ b/arch/x86/include/asm/pgtable.h -@@ -44,6 +44,7 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page); - - #ifndef __PAGETABLE_PUD_FOLDED - #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd) -+#define set_pgd_batched(pgdp, pgd) native_set_pgd_batched(pgdp, pgd) - #define pgd_clear(pgd) native_pgd_clear(pgd) - #endif - -@@ -81,12 +82,51 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page); - - #define arch_end_context_switch(prev) do {} while(0) - -+#define pax_open_kernel() native_pax_open_kernel() -+#define pax_close_kernel() native_pax_close_kernel() - #endif /* CONFIG_PARAVIRT */ - -+#define __HAVE_ARCH_PAX_OPEN_KERNEL -+#define __HAVE_ARCH_PAX_CLOSE_KERNEL -+ -+#ifdef CONFIG_PAX_KERNEXEC -+static inline unsigned long native_pax_open_kernel(void) -+{ -+ unsigned long cr0; -+ -+ preempt_disable(); -+ barrier(); -+ cr0 = read_cr0() ^ X86_CR0_WP; -+ BUG_ON(unlikely(cr0 & X86_CR0_WP)); -+ write_cr0(cr0); -+ return cr0 ^ X86_CR0_WP; -+} -+ -+static inline unsigned long native_pax_close_kernel(void) -+{ -+ unsigned long cr0; -+ -+ cr0 = read_cr0() ^ X86_CR0_WP; -+ BUG_ON(unlikely(!(cr0 & X86_CR0_WP))); -+ write_cr0(cr0); -+ barrier(); -+ preempt_enable_no_resched(); -+ return cr0 ^ X86_CR0_WP; -+} -+#else -+static inline unsigned long native_pax_open_kernel(void) { return 0; } -+static inline unsigned long native_pax_close_kernel(void) { return 0; } -+#endif -+ - /* - * The following only work if pte_present() is true. - * Undefined behaviour if not.. - */ -+static inline int pte_user(pte_t pte) -+{ -+ return pte_val(pte) & _PAGE_USER; -+} -+ - static inline int pte_dirty(pte_t pte) - { - return pte_flags(pte) & _PAGE_DIRTY; -@@ -200,9 +240,29 @@ static inline pte_t pte_wrprotect(pte_t pte) - return pte_clear_flags(pte, _PAGE_RW); - } - -+static inline pte_t pte_mkread(pte_t pte) -+{ -+ return __pte(pte_val(pte) | _PAGE_USER); -+} -+ - static inline pte_t pte_mkexec(pte_t pte) - { -- return pte_clear_flags(pte, _PAGE_NX); -+#ifdef CONFIG_X86_PAE -+ if (__supported_pte_mask & _PAGE_NX) -+ return pte_clear_flags(pte, _PAGE_NX); -+ else -+#endif -+ return pte_set_flags(pte, _PAGE_USER); -+} -+ -+static inline pte_t pte_exprotect(pte_t pte) -+{ -+#ifdef CONFIG_X86_PAE -+ if (__supported_pte_mask & _PAGE_NX) -+ return pte_set_flags(pte, _PAGE_NX); -+ else -+#endif -+ return pte_clear_flags(pte, _PAGE_USER); - } - - static inline pte_t pte_mkdirty(pte_t pte) -@@ -394,6 +454,15 @@ pte_t *populate_extra_pte(unsigned long vaddr); - #endif - - #ifndef __ASSEMBLY__ -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+extern pgd_t cpu_pgd[NR_CPUS][PTRS_PER_PGD]; -+static inline pgd_t *get_cpu_pgd(unsigned int cpu) -+{ -+ return cpu_pgd[cpu]; -+} -+#endif -+ - #include - - static inline int pte_none(pte_t pte) -@@ -570,7 +639,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address) - - static inline int pgd_bad(pgd_t pgd) - { -- return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE; -+ return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE; - } - - static inline int pgd_none(pgd_t pgd) -@@ -593,7 +662,12 @@ static inline int pgd_none(pgd_t pgd) - * pgd_offset() returns a (pgd_t *) - * pgd_index() is used get the offset into the pgd page's array of pgd_t's; - */ --#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address))) -+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+#define pgd_offset_cpu(cpu, address) (get_cpu_pgd(cpu) + pgd_index(address)) -+#endif -+ - /* - * a shortcut which implies the use of the kernel's pgd, instead - * of a process's -@@ -604,6 +678,20 @@ static inline int pgd_none(pgd_t pgd) - #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET) - #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY) - -+#ifdef CONFIG_X86_32 -+#define USER_PGD_PTRS KERNEL_PGD_BOUNDARY -+#else -+#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT -+#define USER_PGD_PTRS (_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT)) -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+#define PAX_USER_SHADOW_BASE (_AC(1,UL) << TASK_SIZE_MAX_SHIFT) -+#else -+#define PAX_USER_SHADOW_BASE (_AC(0,UL)) -+#endif -+ -+#endif -+ - #ifndef __ASSEMBLY__ - - extern int direct_gbpages; -@@ -768,11 +856,23 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm, - * dst and src can be on the same page, but the range must not overlap, - * and must not cross a page boundary. - */ --static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) -+static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count) - { -- memcpy(dst, src, count * sizeof(pgd_t)); -+ pax_open_kernel(); -+ while (count--) -+ *dst++ = *src++; -+ pax_close_kernel(); - } - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src); -+#endif -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src); -+#else -+static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {} -+#endif - - #include - #endif /* __ASSEMBLY__ */ -diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h -index 0c92113..34a77c6 100644 ---- a/arch/x86/include/asm/pgtable_32.h -+++ b/arch/x86/include/asm/pgtable_32.h -@@ -25,9 +25,6 @@ - struct mm_struct; - struct vm_area_struct; - --extern pgd_t swapper_pg_dir[1024]; --extern pgd_t initial_page_table[1024]; -- - static inline void pgtable_cache_init(void) { } - static inline void check_pgt_cache(void) { } - void paging_init(void); -@@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); - # include - #endif - -+extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; -+extern pgd_t initial_page_table[PTRS_PER_PGD]; -+#ifdef CONFIG_X86_PAE -+extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD]; -+#endif -+ - #if defined(CONFIG_HIGHPTE) - #define pte_offset_map(dir, address) \ - ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \ -@@ -62,7 +65,9 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); - /* Clear a kernel PTE and flush it from the TLB */ - #define kpte_clear_flush(ptep, vaddr) \ - do { \ -+ pax_open_kernel(); \ - pte_clear(&init_mm, (vaddr), (ptep)); \ -+ pax_close_kernel(); \ - __flush_tlb_one((vaddr)); \ - } while (0) - -@@ -74,6 +79,9 @@ do { \ - - #endif /* !__ASSEMBLY__ */ - -+#define HAVE_ARCH_UNMAPPED_AREA -+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN -+ - /* - * kern_addr_valid() is (1) for FLATMEM and (0) for - * SPARSEMEM and DISCONTIGMEM -diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h -index ed5903b..c7fe163 100644 ---- a/arch/x86/include/asm/pgtable_32_types.h -+++ b/arch/x86/include/asm/pgtable_32_types.h -@@ -8,7 +8,7 @@ - */ - #ifdef CONFIG_X86_PAE - # include --# define PMD_SIZE (1UL << PMD_SHIFT) -+# define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) - # define PMD_MASK (~(PMD_SIZE - 1)) - #else - # include -@@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */ - # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) - #endif - -+#ifdef CONFIG_PAX_KERNEXEC -+#ifndef __ASSEMBLY__ -+extern unsigned char MODULES_EXEC_VADDR[]; -+extern unsigned char MODULES_EXEC_END[]; -+#endif -+#include -+#define ktla_ktva(addr) (addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET) -+#define ktva_ktla(addr) (addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET) -+#else -+#define ktla_ktva(addr) (addr) -+#define ktva_ktla(addr) (addr) -+#endif -+ - #define MODULES_VADDR VMALLOC_START - #define MODULES_END VMALLOC_END - #define MODULES_LEN (MODULES_VADDR - MODULES_END) -diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h -index 8251be0..4ea8b46 100644 ---- a/arch/x86/include/asm/pgtable_64.h -+++ b/arch/x86/include/asm/pgtable_64.h -@@ -16,10 +16,14 @@ - - extern pud_t level3_kernel_pgt[512]; - extern pud_t level3_ident_pgt[512]; -+extern pud_t level3_vmalloc_start_pgt[512]; -+extern pud_t level3_vmalloc_end_pgt[512]; -+extern pud_t level3_vmemmap_pgt[512]; -+extern pud_t level2_vmemmap_pgt[512]; - extern pmd_t level2_kernel_pgt[512]; - extern pmd_t level2_fixmap_pgt[512]; --extern pmd_t level2_ident_pgt[512]; --extern pgd_t init_level4_pgt[]; -+extern pmd_t level2_ident_pgt[512*2]; -+extern pgd_t init_level4_pgt[512]; - - #define swapper_pg_dir init_level4_pgt - -@@ -61,7 +65,9 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) - - static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) - { -+ pax_open_kernel(); - *pmdp = pmd; -+ pax_close_kernel(); - } - - static inline void native_pmd_clear(pmd_t *pmd) -@@ -97,7 +103,9 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp) - - static inline void native_set_pud(pud_t *pudp, pud_t pud) - { -+ pax_open_kernel(); - *pudp = pud; -+ pax_close_kernel(); - } - - static inline void native_pud_clear(pud_t *pud) -@@ -107,6 +115,13 @@ static inline void native_pud_clear(pud_t *pud) - - static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) - { -+ pax_open_kernel(); -+ *pgdp = pgd; -+ pax_close_kernel(); -+} -+ -+static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd) -+{ - *pgdp = pgd; - } - -diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h -index 766ea16..5b96cb3 100644 ---- a/arch/x86/include/asm/pgtable_64_types.h -+++ b/arch/x86/include/asm/pgtable_64_types.h -@@ -59,5 +59,10 @@ typedef struct { pteval_t pte; } pte_t; - #define MODULES_VADDR _AC(0xffffffffa0000000, UL) - #define MODULES_END _AC(0xffffffffff000000, UL) - #define MODULES_LEN (MODULES_END - MODULES_VADDR) -+#define MODULES_EXEC_VADDR MODULES_VADDR -+#define MODULES_EXEC_END MODULES_END -+ -+#define ktla_ktva(addr) (addr) -+#define ktva_ktla(addr) (addr) - - #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ -diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h -index 013286a..8b42f4f 100644 ---- a/arch/x86/include/asm/pgtable_types.h -+++ b/arch/x86/include/asm/pgtable_types.h -@@ -16,13 +16,12 @@ - #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ - #define _PAGE_BIT_PAT 7 /* on 4KB pages */ - #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ --#define _PAGE_BIT_UNUSED1 9 /* available for programmer */ -+#define _PAGE_BIT_SPECIAL 9 /* special mappings, no associated struct page */ - #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */ - #define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */ - #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ --#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1 --#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1 --#define _PAGE_BIT_SPLITTING _PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */ -+#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SPECIAL -+#define _PAGE_BIT_SPLITTING _PAGE_BIT_SPECIAL /* only valid on a PSE pmd */ - #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ - - /* If _PAGE_BIT_PRESENT is clear, we use these: */ -@@ -40,7 +39,6 @@ - #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) - #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE) - #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL) --#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1) - #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP) - #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) - #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) -@@ -57,8 +55,10 @@ - - #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) - #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) --#else -+#elif defined(CONFIG_KMEMCHECK) - #define _PAGE_NX (_AT(pteval_t, 0)) -+#else -+#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) - #endif - - #define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE) -@@ -96,6 +96,9 @@ - #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ - _PAGE_ACCESSED) - -+#define PAGE_READONLY_NOEXEC PAGE_READONLY -+#define PAGE_SHARED_NOEXEC PAGE_SHARED -+ - #define __PAGE_KERNEL_EXEC \ - (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) - #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) -@@ -106,7 +109,7 @@ - #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC) - #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) - #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD) --#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) -+#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RO | _PAGE_USER) - #define __PAGE_KERNEL_VVAR (__PAGE_KERNEL_RO | _PAGE_USER) - #define __PAGE_KERNEL_VVAR_NOCACHE (__PAGE_KERNEL_VVAR | _PAGE_PCD | _PAGE_PWT) - #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) -@@ -168,8 +171,8 @@ - * bits are combined, this will alow user to access the high address mapped - * VDSO in the presence of CONFIG_COMPAT_VDSO - */ --#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ --#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */ -+#define PTE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ -+#define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ - #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ - #endif - -@@ -207,7 +210,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd) - { - return native_pgd_val(pgd) & PTE_FLAGS_MASK; - } -+#endif - -+#if PAGETABLE_LEVELS == 3 -+#include -+#endif -+ -+#if PAGETABLE_LEVELS == 2 -+#include -+#endif -+ -+#ifndef __ASSEMBLY__ - #if PAGETABLE_LEVELS > 3 - typedef struct { pudval_t pud; } pud_t; - -@@ -221,8 +234,6 @@ static inline pudval_t native_pud_val(pud_t pud) - return pud.pud; - } - #else --#include -- - static inline pudval_t native_pud_val(pud_t pud) - { - return native_pgd_val(pud.pgd); -@@ -242,8 +253,6 @@ static inline pmdval_t native_pmd_val(pmd_t pmd) - return pmd.pmd; - } - #else --#include -- - static inline pmdval_t native_pmd_val(pmd_t pmd) - { - return native_pgd_val(pmd.pud.pgd); -@@ -283,7 +292,6 @@ typedef struct page *pgtable_t; - - extern pteval_t __supported_pte_mask; - extern void set_nx(void); --extern int nx_enabled; - - #define pgprot_writecombine pgprot_writecombine - extern pgprot_t pgprot_writecombine(pgprot_t prot); -diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h -index aea1d1d..680cf09 100644 ---- a/arch/x86/include/asm/processor-flags.h -+++ b/arch/x86/include/asm/processor-flags.h -@@ -65,6 +65,7 @@ - #define X86_CR4_PCIDE 0x00020000 /* enable PCID support */ - #define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */ - #define X86_CR4_SMEP 0x00100000 /* enable SMEP support */ -+#define X86_CR4_SMAP 0x00200000 /* enable SMAP support */ - - /* - * x86-64 Task Priority Register, CR8 -diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h -index d048cad..45e350f 100644 ---- a/arch/x86/include/asm/processor.h -+++ b/arch/x86/include/asm/processor.h -@@ -289,7 +289,7 @@ struct tss_struct { - - } ____cacheline_aligned; - --DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss); -+extern struct tss_struct init_tss[NR_CPUS]; - - /* - * Save the original ist values for checking stack pointers during debugging -@@ -822,11 +822,18 @@ static inline void spin_lock_prefetch(const void *x) - */ - #define TASK_SIZE PAGE_OFFSET - #define TASK_SIZE_MAX TASK_SIZE -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2) -+#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE) -+#else - #define STACK_TOP TASK_SIZE --#define STACK_TOP_MAX STACK_TOP -+#endif -+ -+#define STACK_TOP_MAX TASK_SIZE - - #define INIT_THREAD { \ -- .sp0 = sizeof(init_stack) + (long)&init_stack, \ -+ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ - .vm86_info = NULL, \ - .sysenter_cs = __KERNEL_CS, \ - .io_bitmap_ptr = NULL, \ -@@ -840,7 +847,7 @@ static inline void spin_lock_prefetch(const void *x) - */ - #define INIT_TSS { \ - .x86_tss = { \ -- .sp0 = sizeof(init_stack) + (long)&init_stack, \ -+ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ - .ss0 = __KERNEL_DS, \ - .ss1 = __KERNEL_CS, \ - .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \ -@@ -851,11 +858,7 @@ static inline void spin_lock_prefetch(const void *x) - extern unsigned long thread_saved_pc(struct task_struct *tsk); - - #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long)) --#define KSTK_TOP(info) \ --({ \ -- unsigned long *__ptr = (unsigned long *)(info); \ -- (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ --}) -+#define KSTK_TOP(info) ((container_of(info, struct task_struct, tinfo))->thread.sp0) - - /* - * The below -8 is to reserve 8 bytes on top of the ring0 stack. -@@ -870,7 +873,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); - #define task_pt_regs(task) \ - ({ \ - struct pt_regs *__regs__; \ -- __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \ -+ __regs__ = (struct pt_regs *)((task)->thread.sp0); \ - __regs__ - 1; \ - }) - -@@ -880,13 +883,13 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); - /* - * User space process size. 47bits minus one guard page. - */ --#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) -+#define TASK_SIZE_MAX ((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE) - - /* This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ - #define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? \ -- 0xc0000000 : 0xFFFFe000) -+ 0xc0000000 : 0xFFFFf000) - - #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \ - IA32_PAGE_OFFSET : TASK_SIZE_MAX) -@@ -897,11 +900,11 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); - #define STACK_TOP_MAX TASK_SIZE_MAX - - #define INIT_THREAD { \ -- .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ -+ .sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ - } - - #define INIT_TSS { \ -- .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ -+ .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ - } - - /* -@@ -929,6 +932,10 @@ extern void start_thread(struct pt_regs *regs, unsigned long new_ip, - */ - #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) - -+#ifdef CONFIG_PAX_SEGMEXEC -+#define SEGMEXEC_TASK_UNMAPPED_BASE (PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3)) -+#endif -+ - #define KSTK_EIP(task) (task_pt_regs(task)->ip) - - /* Get/set a process' ability to use the timestamp counter instruction */ -@@ -989,12 +996,12 @@ extern bool cpu_has_amd_erratum(const int *); - #define cpu_has_amd_erratum(x) (false) - #endif /* CONFIG_CPU_SUP_AMD */ - --extern unsigned long arch_align_stack(unsigned long sp); -+#define arch_align_stack(x) ((x) & ~0xfUL) - extern void free_init_pages(char *what, unsigned long begin, unsigned long end); - - void default_idle(void); - bool set_pm_idle_to_default(void); - --void stop_this_cpu(void *dummy); -+void stop_this_cpu(void *dummy) __noreturn; - - #endif /* _ASM_X86_PROCESSOR_H */ -diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h -index 19f16eb..b50624b 100644 ---- a/arch/x86/include/asm/ptrace.h -+++ b/arch/x86/include/asm/ptrace.h -@@ -155,28 +155,29 @@ static inline unsigned long regs_return_value(struct pt_regs *regs) - } - - /* -- * user_mode_vm(regs) determines whether a register set came from user mode. -+ * user_mode(regs) determines whether a register set came from user mode. - * This is true if V8086 mode was enabled OR if the register set was from - * protected mode with RPL-3 CS value. This tricky test checks that with - * one comparison. Many places in the kernel can bypass this full check -- * if they have already ruled out V8086 mode, so user_mode(regs) can be used. -+ * if they have already ruled out V8086 mode, so user_mode_novm(regs) can -+ * be used. - */ --static inline int user_mode(struct pt_regs *regs) -+static inline int user_mode_novm(struct pt_regs *regs) - { - #ifdef CONFIG_X86_32 - return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; - #else -- return !!(regs->cs & 3); -+ return !!(regs->cs & SEGMENT_RPL_MASK); - #endif - } - --static inline int user_mode_vm(struct pt_regs *regs) -+static inline int user_mode(struct pt_regs *regs) - { - #ifdef CONFIG_X86_32 - return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >= - USER_RPL; - #else -- return user_mode(regs); -+ return user_mode_novm(regs); - #endif - } - -@@ -192,15 +193,16 @@ static inline int v8086_mode(struct pt_regs *regs) - #ifdef CONFIG_X86_64 - static inline bool user_64bit_mode(struct pt_regs *regs) - { -+ unsigned long cs = regs->cs & 0xffff; - #ifndef CONFIG_PARAVIRT - /* - * On non-paravirt systems, this is the only long mode CPL 3 - * selector. We do not allow long mode selectors in the LDT. - */ -- return regs->cs == __USER_CS; -+ return cs == __USER_CS; - #else - /* Headers are too twisted for this to go in paravirt.h. */ -- return regs->cs == __USER_CS || regs->cs == pv_info.extra_user_64bit_cs; -+ return cs == __USER_CS || cs == pv_info.extra_user_64bit_cs; - #endif - } - #endif -diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h -index fe1ec5b..dc5c3fe 100644 ---- a/arch/x86/include/asm/realmode.h -+++ b/arch/x86/include/asm/realmode.h -@@ -22,16 +22,14 @@ struct real_mode_header { - #endif - /* APM/BIOS reboot */ - u32 machine_real_restart_asm; --#ifdef CONFIG_X86_64 - u32 machine_real_restart_seg; --#endif - }; - - /* This must match data at trampoline_32/64.S */ - struct trampoline_header { - #ifdef CONFIG_X86_32 - u32 start; -- u16 gdt_pad; -+ u16 boot_cs; - u16 gdt_limit; - u32 gdt_base; - #else -diff --git a/arch/x86/include/asm/reboot.h b/arch/x86/include/asm/reboot.h -index a82c4f1..ac45053 100644 ---- a/arch/x86/include/asm/reboot.h -+++ b/arch/x86/include/asm/reboot.h -@@ -6,13 +6,13 @@ - struct pt_regs; - - struct machine_ops { -- void (*restart)(char *cmd); -- void (*halt)(void); -- void (*power_off)(void); -+ void (* __noreturn restart)(char *cmd); -+ void (* __noreturn halt)(void); -+ void (* __noreturn power_off)(void); - void (*shutdown)(void); - void (*crash_shutdown)(struct pt_regs *); -- void (*emergency_restart)(void); --}; -+ void (* __noreturn emergency_restart)(void); -+} __no_const; - - extern struct machine_ops machine_ops; - -diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h -index 2dbe4a7..ce1db00 100644 ---- a/arch/x86/include/asm/rwsem.h -+++ b/arch/x86/include/asm/rwsem.h -@@ -64,6 +64,14 @@ static inline void __down_read(struct rw_semaphore *sem) - { - asm volatile("# beginning down_read\n\t" - LOCK_PREFIX _ASM_INC "(%1)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX _ASM_DEC "(%1)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - /* adds 0x00000001 */ - " jns 1f\n" - " call call_rwsem_down_read_failed\n" -@@ -85,6 +93,14 @@ static inline int __down_read_trylock(struct rw_semaphore *sem) - "1:\n\t" - " mov %1,%2\n\t" - " add %3,%2\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "sub %3,%2\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - " jle 2f\n\t" - LOCK_PREFIX " cmpxchg %2,%0\n\t" - " jnz 1b\n\t" -@@ -104,6 +120,14 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass) - long tmp; - asm volatile("# beginning down_write\n\t" - LOCK_PREFIX " xadd %1,(%2)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "mov %1,(%2)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - /* adds 0xffff0001, returns the old value */ - " test %1,%1\n\t" - /* was the count 0 before? */ -@@ -141,6 +165,14 @@ static inline void __up_read(struct rw_semaphore *sem) - long tmp; - asm volatile("# beginning __up_read\n\t" - LOCK_PREFIX " xadd %1,(%2)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "mov %1,(%2)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - /* subtracts 1, returns the old value */ - " jns 1f\n\t" - " call call_rwsem_wake\n" /* expects old value in %edx */ -@@ -159,6 +191,14 @@ static inline void __up_write(struct rw_semaphore *sem) - long tmp; - asm volatile("# beginning __up_write\n\t" - LOCK_PREFIX " xadd %1,(%2)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ "mov %1,(%2)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - /* subtracts 0xffff0001, returns the old value */ - " jns 1f\n\t" - " call call_rwsem_wake\n" /* expects old value in %edx */ -@@ -176,6 +216,14 @@ static inline void __downgrade_write(struct rw_semaphore *sem) - { - asm volatile("# beginning __downgrade_write\n\t" - LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX _ASM_SUB "%2,(%1)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - /* - * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386) - * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64) -@@ -194,7 +242,15 @@ static inline void __downgrade_write(struct rw_semaphore *sem) - */ - static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) - { -- asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0" -+ asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX _ASM_SUB "%1,%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - : "+m" (sem->count) - : "er" (delta)); - } -@@ -204,7 +260,7 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) - */ - static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem) - { -- return delta + xadd(&sem->count, delta); -+ return delta + xadd_check_overflow(&sem->count, delta); - } - - #endif /* __KERNEL__ */ -diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h -index c48a950..c6d7468 100644 ---- a/arch/x86/include/asm/segment.h -+++ b/arch/x86/include/asm/segment.h -@@ -64,10 +64,15 @@ - * 26 - ESPFIX small SS - * 27 - per-cpu [ offset to per-cpu data area ] - * 28 - stack_canary-20 [ for stack protector ] -- * 29 - unused -- * 30 - unused -+ * 29 - PCI BIOS CS -+ * 30 - PCI BIOS DS - * 31 - TSS for double fault handler - */ -+#define GDT_ENTRY_KERNEXEC_EFI_CS (1) -+#define GDT_ENTRY_KERNEXEC_EFI_DS (2) -+#define __KERNEXEC_EFI_CS (GDT_ENTRY_KERNEXEC_EFI_CS*8) -+#define __KERNEXEC_EFI_DS (GDT_ENTRY_KERNEXEC_EFI_DS*8) -+ - #define GDT_ENTRY_TLS_MIN 6 - #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) - -@@ -79,6 +84,8 @@ - - #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE+0) - -+#define GDT_ENTRY_KERNEXEC_KERNEL_CS (4) -+ - #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE+1) - - #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE+4) -@@ -104,6 +111,12 @@ - #define __KERNEL_STACK_CANARY 0 - #endif - -+#define GDT_ENTRY_PCIBIOS_CS (GDT_ENTRY_KERNEL_BASE+17) -+#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8) -+ -+#define GDT_ENTRY_PCIBIOS_DS (GDT_ENTRY_KERNEL_BASE+18) -+#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8) -+ - #define GDT_ENTRY_DOUBLEFAULT_TSS 31 - - /* -@@ -141,7 +154,7 @@ - */ - - /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */ --#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8) -+#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16) - - - #else -@@ -165,6 +178,8 @@ - #define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS*8+3) - #define __USER32_DS __USER_DS - -+#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7 -+ - #define GDT_ENTRY_TSS 8 /* needs two entries */ - #define GDT_ENTRY_LDT 10 /* needs two entries */ - #define GDT_ENTRY_TLS_MIN 12 -@@ -185,6 +200,7 @@ - #endif - - #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS*8) -+#define __KERNEXEC_KERNEL_CS (GDT_ENTRY_KERNEXEC_KERNEL_CS*8) - #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS*8) - #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS*8+3) - #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS*8+3) -@@ -265,7 +281,7 @@ static inline unsigned long get_limit(unsigned long segment) - { - unsigned long __limit; - asm("lsll %1,%0" : "=r" (__limit) : "r" (segment)); -- return __limit + 1; -+ return __limit; - } - - #endif /* !__ASSEMBLY__ */ -diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h -index 4f19a15..9e14f27 100644 ---- a/arch/x86/include/asm/smp.h -+++ b/arch/x86/include/asm/smp.h -@@ -36,7 +36,7 @@ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map); - /* cpus sharing the last level cache: */ - DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map); - DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id); --DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number); -+DECLARE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number); - - static inline struct cpumask *cpu_sibling_mask(int cpu) - { -@@ -79,7 +79,7 @@ struct smp_ops { - - void (*send_call_func_ipi)(const struct cpumask *mask); - void (*send_call_func_single_ipi)(int cpu); --}; -+} __no_const; - - /* Globals due to paravirt */ - extern void set_cpu_sibling_map(int cpu); -@@ -190,14 +190,8 @@ extern unsigned disabled_cpus __cpuinitdata; - extern int safe_smp_processor_id(void); - - #elif defined(CONFIG_X86_64_SMP) --#define raw_smp_processor_id() (this_cpu_read(cpu_number)) -- --#define stack_smp_processor_id() \ --({ \ -- struct thread_info *ti; \ -- __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ -- ti->cpu; \ --}) -+#define raw_smp_processor_id() (this_cpu_read(cpu_number)) -+#define stack_smp_processor_id() raw_smp_processor_id() - #define safe_smp_processor_id() smp_processor_id() - - #endif -diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h -index 33692ea..350a534 100644 ---- a/arch/x86/include/asm/spinlock.h -+++ b/arch/x86/include/asm/spinlock.h -@@ -172,6 +172,14 @@ static inline int arch_write_can_lock(arch_rwlock_t *lock) - static inline void arch_read_lock(arch_rwlock_t *rw) - { - asm volatile(LOCK_PREFIX READ_LOCK_SIZE(dec) " (%0)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX READ_LOCK_SIZE(inc) " (%0)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - "jns 1f\n" - "call __read_lock_failed\n\t" - "1:\n" -@@ -181,6 +189,14 @@ static inline void arch_read_lock(arch_rwlock_t *rw) - static inline void arch_write_lock(arch_rwlock_t *rw) - { - asm volatile(LOCK_PREFIX WRITE_LOCK_SUB(%1) "(%0)\n\t" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX WRITE_LOCK_ADD(%1) "(%0)\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - "jz 1f\n" - "call __write_lock_failed\n\t" - "1:\n" -@@ -210,13 +226,29 @@ static inline int arch_write_trylock(arch_rwlock_t *lock) - - static inline void arch_read_unlock(arch_rwlock_t *rw) - { -- asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0" -+ asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX READ_LOCK_SIZE(dec) " %0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - :"+m" (rw->lock) : : "memory"); - } - - static inline void arch_write_unlock(arch_rwlock_t *rw) - { -- asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0" -+ asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0\n" -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ "jno 0f\n" -+ LOCK_PREFIX WRITE_LOCK_SUB(%1) "%0\n" -+ "int $4\n0:\n" -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ - : "+m" (rw->write) : "i" (RW_LOCK_BIAS) : "memory"); - } - -diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h -index 6a99859..03cb807 100644 ---- a/arch/x86/include/asm/stackprotector.h -+++ b/arch/x86/include/asm/stackprotector.h -@@ -47,7 +47,7 @@ - * head_32 for boot CPU and setup_per_cpu_areas() for others. - */ - #define GDT_STACK_CANARY_INIT \ -- [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18), -+ [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17), - - /* - * Initialize the stackprotector canary value. -@@ -112,7 +112,7 @@ static inline void setup_stack_canary_segment(int cpu) - - static inline void load_stack_canary_segment(void) - { --#ifdef CONFIG_X86_32 -+#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF) - asm volatile ("mov %0, %%gs" : : "r" (0)); - #endif - } -diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h -index 70bbe39..4ae2bd4 100644 ---- a/arch/x86/include/asm/stacktrace.h -+++ b/arch/x86/include/asm/stacktrace.h -@@ -11,28 +11,20 @@ - - extern int kstack_depth_to_print; - --struct thread_info; -+struct task_struct; - struct stacktrace_ops; - --typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo, -- unsigned long *stack, -- unsigned long bp, -- const struct stacktrace_ops *ops, -- void *data, -- unsigned long *end, -- int *graph); -- --extern unsigned long --print_context_stack(struct thread_info *tinfo, -- unsigned long *stack, unsigned long bp, -- const struct stacktrace_ops *ops, void *data, -- unsigned long *end, int *graph); -- --extern unsigned long --print_context_stack_bp(struct thread_info *tinfo, -- unsigned long *stack, unsigned long bp, -- const struct stacktrace_ops *ops, void *data, -- unsigned long *end, int *graph); -+typedef unsigned long walk_stack_t(struct task_struct *task, -+ void *stack_start, -+ unsigned long *stack, -+ unsigned long bp, -+ const struct stacktrace_ops *ops, -+ void *data, -+ unsigned long *end, -+ int *graph); -+ -+extern walk_stack_t print_context_stack; -+extern walk_stack_t print_context_stack_bp; - - /* Generic stack tracer with callbacks */ - -@@ -40,7 +32,7 @@ struct stacktrace_ops { - void (*address)(void *data, unsigned long address, int reliable); - /* On negative return stop dumping */ - int (*stack)(void *data, char *name); -- walk_stack_t walk_stack; -+ walk_stack_t *walk_stack; - }; - - void dump_trace(struct task_struct *tsk, struct pt_regs *regs, -diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h -index 4ec45b3..a4f0a8a 100644 ---- a/arch/x86/include/asm/switch_to.h -+++ b/arch/x86/include/asm/switch_to.h -@@ -108,7 +108,7 @@ do { \ - "call __switch_to\n\t" \ - "movq "__percpu_arg([current_task])",%%rsi\n\t" \ - __switch_canary \ -- "movq %P[thread_info](%%rsi),%%r8\n\t" \ -+ "movq "__percpu_arg([thread_info])",%%r8\n\t" \ - "movq %%rax,%%rdi\n\t" \ - "testl %[_tif_fork],%P[ti_flags](%%r8)\n\t" \ - "jnz ret_from_fork\n\t" \ -@@ -119,7 +119,7 @@ do { \ - [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \ - [ti_flags] "i" (offsetof(struct thread_info, flags)), \ - [_tif_fork] "i" (_TIF_FORK), \ -- [thread_info] "i" (offsetof(struct task_struct, stack)), \ -+ [thread_info] "m" (current_tinfo), \ - [current_task] "m" (current_task) \ - __switch_canary_iparam \ - : "memory", "cc" __EXTRA_CLOBBER) -diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h -index 3fda9db4..4ca1c61 100644 ---- a/arch/x86/include/asm/sys_ia32.h -+++ b/arch/x86/include/asm/sys_ia32.h -@@ -40,7 +40,7 @@ asmlinkage long sys32_sigaction(int, struct old_sigaction32 __user *, - struct old_sigaction32 __user *); - asmlinkage long sys32_alarm(unsigned int); - --asmlinkage long sys32_waitpid(compat_pid_t, unsigned int *, int); -+asmlinkage long sys32_waitpid(compat_pid_t, unsigned int __user *, int); - asmlinkage long sys32_sysfs(int, u32, u32); - - asmlinkage long sys32_sched_rr_get_interval(compat_pid_t, -diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h -index 89f794f..1422765 100644 ---- a/arch/x86/include/asm/thread_info.h -+++ b/arch/x86/include/asm/thread_info.h -@@ -10,6 +10,7 @@ - #include - #include - #include -+#include - - /* - * low level task data that entry.S needs immediate access to -@@ -24,7 +25,6 @@ struct exec_domain; - #include - - struct thread_info { -- struct task_struct *task; /* main task structure */ - struct exec_domain *exec_domain; /* execution domain */ - __u32 flags; /* low level flags */ - __u32 status; /* thread synchronous flags */ -@@ -34,19 +34,13 @@ struct thread_info { - mm_segment_t addr_limit; - struct restart_block restart_block; - void __user *sysenter_return; --#ifdef CONFIG_X86_32 -- unsigned long previous_esp; /* ESP of the previous stack in -- case of nested (IRQ) stacks -- */ -- __u8 supervisor_stack[0]; --#endif -+ unsigned long lowest_stack; - unsigned int sig_on_uaccess_error:1; - unsigned int uaccess_err:1; /* uaccess failed */ - }; - --#define INIT_THREAD_INFO(tsk) \ -+#define INIT_THREAD_INFO \ - { \ -- .task = &tsk, \ - .exec_domain = &default_exec_domain, \ - .flags = 0, \ - .cpu = 0, \ -@@ -57,7 +51,7 @@ struct thread_info { - }, \ - } - --#define init_thread_info (init_thread_union.thread_info) -+#define init_thread_info (init_thread_union.stack) - #define init_stack (init_thread_union.stack) - - #else /* !__ASSEMBLY__ */ -@@ -98,6 +92,7 @@ struct thread_info { - #define TIF_SYSCALL_TRACEPOINT 28 /* syscall tracepoint instrumentation */ - #define TIF_ADDR32 29 /* 32-bit address space on 64 bits */ - #define TIF_X32 30 /* 32-bit native x86-64 binary */ -+#define TIF_GRSEC_SETXID 31 /* update credentials on syscall entry/exit */ - - #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) - #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) -@@ -122,16 +117,18 @@ struct thread_info { - #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) - #define _TIF_ADDR32 (1 << TIF_ADDR32) - #define _TIF_X32 (1 << TIF_X32) -+#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID) - - /* work to do in syscall_trace_enter() */ - #define _TIF_WORK_SYSCALL_ENTRY \ - (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT | \ -- _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT) -+ _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT | \ -+ _TIF_GRSEC_SETXID) - - /* work to do in syscall_trace_leave() */ - #define _TIF_WORK_SYSCALL_EXIT \ - (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP | \ -- _TIF_SYSCALL_TRACEPOINT) -+ _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID) - - /* work to do on interrupt/exception return */ - #define _TIF_WORK_MASK \ -@@ -141,7 +138,8 @@ struct thread_info { - - /* work to do on any return to user space */ - #define _TIF_ALLWORK_MASK \ -- ((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT) -+ ((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT | \ -+ _TIF_GRSEC_SETXID) - - /* Only used for 64 bit */ - #define _TIF_DO_NOTIFY_MASK \ -@@ -157,6 +155,23 @@ struct thread_info { - - #define PREEMPT_ACTIVE 0x10000000 - -+#ifdef __ASSEMBLY__ -+/* how to get the thread information struct from ASM */ -+#define GET_THREAD_INFO(reg) \ -+ mov PER_CPU_VAR(current_tinfo), reg -+ -+/* use this one if reg already contains %esp */ -+#define GET_THREAD_INFO_WITH_ESP(reg) GET_THREAD_INFO(reg) -+#else -+/* how to get the thread information struct from C */ -+DECLARE_PER_CPU(struct thread_info *, current_tinfo); -+ -+static __always_inline struct thread_info *current_thread_info(void) -+{ -+ return this_cpu_read_stable(current_tinfo); -+} -+#endif -+ - #ifdef CONFIG_X86_32 - - #define STACK_WARN (THREAD_SIZE/8) -@@ -167,35 +182,13 @@ struct thread_info { - */ - #ifndef __ASSEMBLY__ - -- - /* how to get the current stack pointer from C */ - register unsigned long current_stack_pointer asm("esp") __used; - --/* how to get the thread information struct from C */ --static inline struct thread_info *current_thread_info(void) --{ -- return (struct thread_info *) -- (current_stack_pointer & ~(THREAD_SIZE - 1)); --} -- --#else /* !__ASSEMBLY__ */ -- --/* how to get the thread information struct from ASM */ --#define GET_THREAD_INFO(reg) \ -- movl $-THREAD_SIZE, reg; \ -- andl %esp, reg -- --/* use this one if reg already contains %esp */ --#define GET_THREAD_INFO_WITH_ESP(reg) \ -- andl $-THREAD_SIZE, reg -- - #endif - - #else /* X86_32 */ - --#include --#define KERNEL_STACK_OFFSET (5*8) -- - /* - * macros/functions for gaining access to the thread information structure - * preempt_count needs to be 1 initially, until the scheduler is functional. -@@ -203,27 +196,8 @@ static inline struct thread_info *current_thread_info(void) - #ifndef __ASSEMBLY__ - DECLARE_PER_CPU(unsigned long, kernel_stack); - --static inline struct thread_info *current_thread_info(void) --{ -- struct thread_info *ti; -- ti = (void *)(this_cpu_read_stable(kernel_stack) + -- KERNEL_STACK_OFFSET - THREAD_SIZE); -- return ti; --} -- --#else /* !__ASSEMBLY__ */ -- --/* how to get the thread information struct from ASM */ --#define GET_THREAD_INFO(reg) \ -- movq PER_CPU_VAR(kernel_stack),reg ; \ -- subq $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg -- --/* -- * Same if PER_CPU_VAR(kernel_stack) is, perhaps with some offset, already in -- * a certain register (to be used in assembler memory operands). -- */ --#define THREAD_INFO(reg, off) KERNEL_STACK_OFFSET+(off)-THREAD_SIZE(reg) -- -+/* how to get the current stack pointer from C */ -+register unsigned long current_stack_pointer asm("rsp") __used; - #endif - - #endif /* !X86_32 */ -@@ -284,5 +258,12 @@ static inline bool is_ia32_task(void) - extern void arch_task_cache_init(void); - extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); - extern void arch_release_task_struct(struct task_struct *tsk); -+ -+#define __HAVE_THREAD_FUNCTIONS -+#define task_thread_info(task) (&(task)->tinfo) -+#define task_stack_page(task) ((task)->stack) -+#define setup_thread_stack(p, org) do {} while (0) -+#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1) -+ - #endif - #endif /* _ASM_X86_THREAD_INFO_H */ -diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h -index e1f3a17..1ab364d 100644 ---- a/arch/x86/include/asm/uaccess.h -+++ b/arch/x86/include/asm/uaccess.h -@@ -7,12 +7,15 @@ - #include - #include - #include -+#include - #include - #include - - #define VERIFY_READ 0 - #define VERIFY_WRITE 1 - -+extern void check_object_size(const void *ptr, unsigned long n, bool to); -+ - /* - * The fs value determines whether argument validity checking should be - * performed or not. If get_fs() == USER_DS, checking is performed, with -@@ -28,7 +31,12 @@ - - #define get_ds() (KERNEL_DS) - #define get_fs() (current_thread_info()->addr_limit) -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) -+void __set_fs(mm_segment_t x); -+void set_fs(mm_segment_t x); -+#else - #define set_fs(x) (current_thread_info()->addr_limit = (x)) -+#endif - - #define segment_eq(a, b) ((a).seg == (b).seg) - -@@ -76,8 +84,33 @@ - * checks that the pointer is in the user space range - after calling - * this function, memory access functions may still return -EFAULT. - */ --#define access_ok(type, addr, size) \ -- (likely(__range_not_ok(addr, size, user_addr_max()) == 0)) -+#define __access_ok(type, addr, size) (likely(__range_not_ok(addr, size, user_addr_max()) == 0)) -+#define access_ok(type, addr, size) \ -+({ \ -+ long __size = size; \ -+ unsigned long __addr = (unsigned long)addr; \ -+ unsigned long __addr_ao = __addr & PAGE_MASK; \ -+ unsigned long __end_ao = __addr + __size - 1; \ -+ bool __ret_ao = __range_not_ok(__addr, __size, user_addr_max()) == 0;\ -+ if (__ret_ao && unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) { \ -+ while(__addr_ao <= __end_ao) { \ -+ char __c_ao; \ -+ __addr_ao += PAGE_SIZE; \ -+ if (__size > PAGE_SIZE) \ -+ cond_resched(); \ -+ if (__get_user(__c_ao, (char __user *)__addr)) \ -+ break; \ -+ if (type != VERIFY_WRITE) { \ -+ __addr = __addr_ao; \ -+ continue; \ -+ } \ -+ if (__put_user(__c_ao, (char __user *)__addr)) \ -+ break; \ -+ __addr = __addr_ao; \ -+ } \ -+ } \ -+ __ret_ao; \ -+}) - - /* - * The exception table consists of pairs of addresses relative to the -@@ -188,12 +221,20 @@ extern int __get_user_bad(void); - asm volatile("call __put_user_" #size : "=a" (__ret_pu) \ - : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") - -- -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define __copyuser_seg "gs;" -+#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n" -+#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n" -+#else -+#define __copyuser_seg -+#define __COPYUSER_SET_ES -+#define __COPYUSER_RESTORE_ES -+#endif - - #ifdef CONFIG_X86_32 - #define __put_user_asm_u64(x, addr, err, errret) \ -- asm volatile("1: movl %%eax,0(%2)\n" \ -- "2: movl %%edx,4(%2)\n" \ -+ asm volatile("1: "__copyuser_seg"movl %%eax,0(%2)\n" \ -+ "2: "__copyuser_seg"movl %%edx,4(%2)\n" \ - "3:\n" \ - ".section .fixup,\"ax\"\n" \ - "4: movl %3,%0\n" \ -@@ -205,8 +246,8 @@ extern int __get_user_bad(void); - : "A" (x), "r" (addr), "i" (errret), "0" (err)) - - #define __put_user_asm_ex_u64(x, addr) \ -- asm volatile("1: movl %%eax,0(%1)\n" \ -- "2: movl %%edx,4(%1)\n" \ -+ asm volatile("1: "__copyuser_seg"movl %%eax,0(%1)\n" \ -+ "2: "__copyuser_seg"movl %%edx,4(%1)\n" \ - "3:\n" \ - _ASM_EXTABLE_EX(1b, 2b) \ - _ASM_EXTABLE_EX(2b, 3b) \ -@@ -258,7 +299,7 @@ extern void __put_user_8(void); - __typeof__(*(ptr)) __pu_val; \ - __chk_user_ptr(ptr); \ - might_fault(); \ -- __pu_val = x; \ -+ __pu_val = (x); \ - switch (sizeof(*(ptr))) { \ - case 1: \ - __put_user_x(1, __pu_val, ptr, __ret_pu); \ -@@ -379,7 +420,7 @@ do { \ - } while (0) - - #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ -- asm volatile("1: mov"itype" %2,%"rtype"1\n" \ -+ asm volatile("1: "__copyuser_seg"mov"itype" %2,%"rtype"1\n"\ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: mov %3,%0\n" \ -@@ -387,7 +428,7 @@ do { \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE(1b, 3b) \ -- : "=r" (err), ltype(x) \ -+ : "=r" (err), ltype (x) \ - : "m" (__m(addr)), "i" (errret), "0" (err)) - - #define __get_user_size_ex(x, ptr, size) \ -@@ -412,7 +453,7 @@ do { \ - } while (0) - - #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \ -- asm volatile("1: mov"itype" %1,%"rtype"0\n" \ -+ asm volatile("1: "__copyuser_seg"mov"itype" %1,%"rtype"0\n"\ - "2:\n" \ - _ASM_EXTABLE_EX(1b, 2b) \ - : ltype(x) : "m" (__m(addr))) -@@ -429,13 +470,24 @@ do { \ - int __gu_err; \ - unsigned long __gu_val; \ - __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ -- (x) = (__force __typeof__(*(ptr)))__gu_val; \ -+ (x) = (__typeof__(*(ptr)))__gu_val; \ - __gu_err; \ - }) - - /* FIXME: this hack is definitely wrong -AK */ - struct __large_struct { unsigned long buf[100]; }; --#define __m(x) (*(struct __large_struct __user *)(x)) -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define ____m(x) \ -+({ \ -+ unsigned long ____x = (unsigned long)(x); \ -+ if (____x < PAX_USER_SHADOW_BASE) \ -+ ____x += PAX_USER_SHADOW_BASE; \ -+ (void __user *)____x; \ -+}) -+#else -+#define ____m(x) (x) -+#endif -+#define __m(x) (*(struct __large_struct __user *)____m(x)) - - /* - * Tell gcc we read from memory instead of writing: this is because -@@ -443,7 +495,7 @@ struct __large_struct { unsigned long buf[100]; }; - * aliasing issues. - */ - #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \ -- asm volatile("1: mov"itype" %"rtype"1,%2\n" \ -+ asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"1,%2\n"\ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: mov %3,%0\n" \ -@@ -451,10 +503,10 @@ struct __large_struct { unsigned long buf[100]; }; - ".previous\n" \ - _ASM_EXTABLE(1b, 3b) \ - : "=r"(err) \ -- : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err)) -+ : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err)) - - #define __put_user_asm_ex(x, addr, itype, rtype, ltype) \ -- asm volatile("1: mov"itype" %"rtype"0,%1\n" \ -+ asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"0,%1\n"\ - "2:\n" \ - _ASM_EXTABLE_EX(1b, 2b) \ - : : ltype(x), "m" (__m(addr))) -@@ -493,8 +545,12 @@ struct __large_struct { unsigned long buf[100]; }; - * On error, the variable @x is set to zero. - */ - -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define __get_user(x, ptr) get_user((x), (ptr)) -+#else - #define __get_user(x, ptr) \ - __get_user_nocheck((x), (ptr), sizeof(*(ptr))) -+#endif - - /** - * __put_user: - Write a simple value into user space, with less checking. -@@ -516,8 +572,12 @@ struct __large_struct { unsigned long buf[100]; }; - * Returns zero on success, or -EFAULT on error. - */ - -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define __put_user(x, ptr) put_user((x), (ptr)) -+#else - #define __put_user(x, ptr) \ - __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) -+#endif - - #define __get_user_unaligned __get_user - #define __put_user_unaligned __put_user -@@ -535,7 +595,7 @@ struct __large_struct { unsigned long buf[100]; }; - #define get_user_ex(x, ptr) do { \ - unsigned long __gue_val; \ - __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \ -- (x) = (__force __typeof__(*(ptr)))__gue_val; \ -+ (x) = (__typeof__(*(ptr)))__gue_val; \ - } while (0) - - #ifdef CONFIG_X86_WP_WORKS_OK -diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h -index 576e39b..ccd0a39 100644 ---- a/arch/x86/include/asm/uaccess_32.h -+++ b/arch/x86/include/asm/uaccess_32.h -@@ -11,15 +11,15 @@ - #include - - unsigned long __must_check __copy_to_user_ll -- (void __user *to, const void *from, unsigned long n); -+ (void __user *to, const void *from, unsigned long n) __size_overflow(3); - unsigned long __must_check __copy_from_user_ll -- (void *to, const void __user *from, unsigned long n); -+ (void *to, const void __user *from, unsigned long n) __size_overflow(3); - unsigned long __must_check __copy_from_user_ll_nozero -- (void *to, const void __user *from, unsigned long n); -+ (void *to, const void __user *from, unsigned long n) __size_overflow(3); - unsigned long __must_check __copy_from_user_ll_nocache -- (void *to, const void __user *from, unsigned long n); -+ (void *to, const void __user *from, unsigned long n) __size_overflow(3); - unsigned long __must_check __copy_from_user_ll_nocache_nozero -- (void *to, const void __user *from, unsigned long n); -+ (void *to, const void __user *from, unsigned long n) __size_overflow(3); - - /** - * __copy_to_user_inatomic: - Copy a block of data into user space, with less checking. -@@ -43,6 +43,9 @@ unsigned long __must_check __copy_from_user_ll_nocache_nozero - static __always_inline unsigned long __must_check - __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - if (__builtin_constant_p(n)) { - unsigned long ret; - -@@ -61,6 +64,8 @@ __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) - return ret; - } - } -+ if (!__builtin_constant_p(n)) -+ check_object_size(from, n, true); - return __copy_to_user_ll(to, from, n); - } - -@@ -82,12 +87,16 @@ static __always_inline unsigned long __must_check - __copy_to_user(void __user *to, const void *from, unsigned long n) - { - might_fault(); -+ - return __copy_to_user_inatomic(to, from, n); - } - - static __always_inline unsigned long - __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) - { -+ if ((long)n < 0) -+ return n; -+ - /* Avoid zeroing the tail if the copy fails.. - * If 'n' is constant and 1, 2, or 4, we do still zero on a failure, - * but as the zeroing behaviour is only significant when n is not -@@ -137,6 +146,10 @@ static __always_inline unsigned long - __copy_from_user(void *to, const void __user *from, unsigned long n) - { - might_fault(); -+ -+ if ((long)n < 0) -+ return n; -+ - if (__builtin_constant_p(n)) { - unsigned long ret; - -@@ -152,6 +165,8 @@ __copy_from_user(void *to, const void __user *from, unsigned long n) - return ret; - } - } -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); - return __copy_from_user_ll(to, from, n); - } - -@@ -159,6 +174,10 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to, - const void __user *from, unsigned long n) - { - might_fault(); -+ -+ if ((long)n < 0) -+ return n; -+ - if (__builtin_constant_p(n)) { - unsigned long ret; - -@@ -181,15 +200,19 @@ static __always_inline unsigned long - __copy_from_user_inatomic_nocache(void *to, const void __user *from, - unsigned long n) - { -- return __copy_from_user_ll_nocache_nozero(to, from, n); --} -+ if ((long)n < 0) -+ return n; - --unsigned long __must_check copy_to_user(void __user *to, -- const void *from, unsigned long n); --unsigned long __must_check _copy_from_user(void *to, -- const void __user *from, -- unsigned long n); -+ return __copy_from_user_ll_nocache_nozero(to, from, n); -+} - -+extern void copy_to_user_overflow(void) -+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -+ __compiletime_error("copy_to_user() buffer size is not provably correct") -+#else -+ __compiletime_warning("copy_to_user() buffer size is not provably correct") -+#endif -+; - - extern void copy_from_user_overflow(void) - #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -@@ -199,21 +222,65 @@ extern void copy_from_user_overflow(void) - #endif - ; - --static inline unsigned long __must_check copy_from_user(void *to, -- const void __user *from, -- unsigned long n) -+/** -+ * copy_to_user: - Copy a block of data into user space. -+ * @to: Destination address, in user space. -+ * @from: Source address, in kernel space. -+ * @n: Number of bytes to copy. -+ * -+ * Context: User context only. This function may sleep. -+ * -+ * Copy data from kernel space to user space. -+ * -+ * Returns number of bytes that could not be copied. -+ * On success, this will be zero. -+ */ -+static inline unsigned long __must_check -+copy_to_user(void __user *to, const void *from, unsigned long n) - { -- int sz = __compiletime_object_size(to); -+ size_t sz = __compiletime_object_size(from); - -- if (likely(sz == -1 || sz >= n)) -- n = _copy_from_user(to, from, n); -- else -- copy_from_user_overflow(); -+ if (unlikely(sz != (size_t)-1 && sz < n)) -+ copy_to_user_overflow(); -+ else if (access_ok(VERIFY_WRITE, to, n)) -+ n = __copy_to_user(to, from, n); -+ return n; -+} -+ -+/** -+ * copy_from_user: - Copy a block of data from user space. -+ * @to: Destination address, in kernel space. -+ * @from: Source address, in user space. -+ * @n: Number of bytes to copy. -+ * -+ * Context: User context only. This function may sleep. -+ * -+ * Copy data from user space to kernel space. -+ * -+ * Returns number of bytes that could not be copied. -+ * On success, this will be zero. -+ * -+ * If some data could not be copied, this function will pad the copied -+ * data to the requested size using zero bytes. -+ */ -+static inline unsigned long __must_check -+copy_from_user(void *to, const void __user *from, unsigned long n) -+{ -+ size_t sz = __compiletime_object_size(to); - -+ if (unlikely(sz != (size_t)-1 && sz < n)) -+ copy_from_user_overflow(); -+ else if (access_ok(VERIFY_READ, from, n)) -+ n = __copy_from_user(to, from, n); -+ else if ((long)n > 0) { -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); -+ memset(to, 0, n); -+ } - return n; - } - --unsigned long __must_check clear_user(void __user *mem, unsigned long len); --unsigned long __must_check __clear_user(void __user *mem, unsigned long len); -+unsigned long __must_check clear_user(void __user *mem, unsigned long len) __size_overflow(2); -+unsigned long __must_check __clear_user(void __user *mem, unsigned long len) __size_overflow(2); - - #endif /* _ASM_X86_UACCESS_32_H */ -diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h -index d8def8b..6052b20 100644 ---- a/arch/x86/include/asm/uaccess_64.h -+++ b/arch/x86/include/asm/uaccess_64.h -@@ -10,6 +10,9 @@ - #include - #include - #include -+#include -+ -+#define set_fs(x) (current_thread_info()->addr_limit = (x)) - - /* - * Copy To/From Userspace -@@ -17,13 +20,13 @@ - - /* Handles exceptions in both to and from, but doesn't do access_ok */ - __must_check unsigned long --copy_user_enhanced_fast_string(void *to, const void *from, unsigned len); -+copy_user_enhanced_fast_string(void *to, const void *from, unsigned len) __size_overflow(3); - __must_check unsigned long --copy_user_generic_string(void *to, const void *from, unsigned len); -+copy_user_generic_string(void *to, const void *from, unsigned len) __size_overflow(3); - __must_check unsigned long --copy_user_generic_unrolled(void *to, const void *from, unsigned len); -+copy_user_generic_unrolled(void *to, const void *from, unsigned len) __size_overflow(3); - --static __always_inline __must_check unsigned long -+static __always_inline __must_check __size_overflow(3) unsigned long - copy_user_generic(void *to, const void *from, unsigned len) - { - unsigned ret; -@@ -41,142 +44,205 @@ copy_user_generic(void *to, const void *from, unsigned len) - ASM_OUTPUT2("=a" (ret), "=D" (to), "=S" (from), - "=d" (len)), - "1" (to), "2" (from), "3" (len) -- : "memory", "rcx", "r8", "r9", "r10", "r11"); -+ : "memory", "rcx", "r8", "r9", "r11"); - return ret; - } - -+static __always_inline __must_check unsigned long -+__copy_to_user(void __user *to, const void *from, unsigned long len) __size_overflow(3); -+static __always_inline __must_check unsigned long -+__copy_from_user(void *to, const void __user *from, unsigned long len) __size_overflow(3); - __must_check unsigned long --_copy_to_user(void __user *to, const void *from, unsigned len); --__must_check unsigned long --_copy_from_user(void *to, const void __user *from, unsigned len); --__must_check unsigned long --copy_in_user(void __user *to, const void __user *from, unsigned len); -+copy_in_user(void __user *to, const void __user *from, unsigned long len) __size_overflow(3); -+ -+extern void copy_to_user_overflow(void) -+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -+ __compiletime_error("copy_to_user() buffer size is not provably correct") -+#else -+ __compiletime_warning("copy_to_user() buffer size is not provably correct") -+#endif -+; -+ -+extern void copy_from_user_overflow(void) -+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS -+ __compiletime_error("copy_from_user() buffer size is not provably correct") -+#else -+ __compiletime_warning("copy_from_user() buffer size is not provably correct") -+#endif -+; - - static inline unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n) - { -- int sz = __compiletime_object_size(to); -- - might_fault(); -- if (likely(sz == -1 || sz >= n)) -- n = _copy_from_user(to, from, n); --#ifdef CONFIG_DEBUG_VM -- else -- WARN(1, "Buffer overflow detected!\n"); --#endif -+ -+ if (access_ok(VERIFY_READ, from, n)) -+ n = __copy_from_user(to, from, n); -+ else if (n < INT_MAX) { -+ if (!__builtin_constant_p(n)) -+ check_object_size(to, n, false); -+ memset(to, 0, n); -+ } - return n; - } - - static __always_inline __must_check --int copy_to_user(void __user *dst, const void *src, unsigned size) -+int copy_to_user(void __user *dst, const void *src, unsigned long size) - { - might_fault(); - -- return _copy_to_user(dst, src, size); -+ if (access_ok(VERIFY_WRITE, dst, size)) -+ size = __copy_to_user(dst, src, size); -+ return size; - } - - static __always_inline __must_check --int __copy_from_user(void *dst, const void __user *src, unsigned size) -+unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size) - { -- int ret = 0; -+ size_t sz = __compiletime_object_size(dst); -+ unsigned ret = 0; - - might_fault(); -- if (!__builtin_constant_p(size)) -- return copy_user_generic(dst, (__force void *)src, size); -+ -+ if (size > INT_MAX) -+ return size; -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ if (!__access_ok(VERIFY_READ, src, size)) -+ return size; -+#endif -+ -+ if (unlikely(sz != (size_t)-1 && sz < size)) { -+ copy_from_user_overflow(); -+ return size; -+ } -+ -+ if (!__builtin_constant_p(size)) { -+ check_object_size(dst, size, false); -+ return copy_user_generic(dst, (__force_kernel const void *)____m(src), size); -+ } - switch (size) { -- case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src, -+ case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src, - ret, "b", "b", "=q", 1); - return ret; -- case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src, -+ case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src, - ret, "w", "w", "=r", 2); - return ret; -- case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src, -+ case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src, - ret, "l", "k", "=r", 4); - return ret; -- case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src, -+ case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src, - ret, "q", "", "=r", 8); - return ret; - case 10: -- __get_user_asm(*(u64 *)dst, (u64 __user *)src, -+ __get_user_asm(*(u64 *)dst, (const u64 __user *)src, - ret, "q", "", "=r", 10); - if (unlikely(ret)) - return ret; - __get_user_asm(*(u16 *)(8 + (char *)dst), -- (u16 __user *)(8 + (char __user *)src), -+ (const u16 __user *)(8 + (const char __user *)src), - ret, "w", "w", "=r", 2); - return ret; - case 16: -- __get_user_asm(*(u64 *)dst, (u64 __user *)src, -+ __get_user_asm(*(u64 *)dst, (const u64 __user *)src, - ret, "q", "", "=r", 16); - if (unlikely(ret)) - return ret; - __get_user_asm(*(u64 *)(8 + (char *)dst), -- (u64 __user *)(8 + (char __user *)src), -+ (const u64 __user *)(8 + (const char __user *)src), - ret, "q", "", "=r", 8); - return ret; - default: -- return copy_user_generic(dst, (__force void *)src, size); -+ return copy_user_generic(dst, (__force_kernel const void *)____m(src), size); - } - } - - static __always_inline __must_check --int __copy_to_user(void __user *dst, const void *src, unsigned size) -+unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size) - { -- int ret = 0; -+ size_t sz = __compiletime_object_size(src); -+ unsigned ret = 0; - - might_fault(); -- if (!__builtin_constant_p(size)) -- return copy_user_generic((__force void *)dst, src, size); -+ -+ if (size > INT_MAX) -+ return size; -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ if (!__access_ok(VERIFY_WRITE, dst, size)) -+ return size; -+#endif -+ -+ if (unlikely(sz != (size_t)-1 && sz < size)) { -+ copy_to_user_overflow(); -+ return size; -+ } -+ -+ if (!__builtin_constant_p(size)) { -+ check_object_size(src, size, true); -+ return copy_user_generic((__force_kernel void *)____m(dst), src, size); -+ } - switch (size) { -- case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst, -+ case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst, - ret, "b", "b", "iq", 1); - return ret; -- case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst, -+ case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst, - ret, "w", "w", "ir", 2); - return ret; -- case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst, -+ case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst, - ret, "l", "k", "ir", 4); - return ret; -- case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst, -+ case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst, - ret, "q", "", "er", 8); - return ret; - case 10: -- __put_user_asm(*(u64 *)src, (u64 __user *)dst, -+ __put_user_asm(*(const u64 *)src, (u64 __user *)dst, - ret, "q", "", "er", 10); - if (unlikely(ret)) - return ret; - asm("":::"memory"); -- __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst, -+ __put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst, - ret, "w", "w", "ir", 2); - return ret; - case 16: -- __put_user_asm(*(u64 *)src, (u64 __user *)dst, -+ __put_user_asm(*(const u64 *)src, (u64 __user *)dst, - ret, "q", "", "er", 16); - if (unlikely(ret)) - return ret; - asm("":::"memory"); -- __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst, -+ __put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst, - ret, "q", "", "er", 8); - return ret; - default: -- return copy_user_generic((__force void *)dst, src, size); -+ return copy_user_generic((__force_kernel void *)____m(dst), src, size); - } - } - - static __always_inline __must_check --int __copy_in_user(void __user *dst, const void __user *src, unsigned size) -+unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned long size) - { -- int ret = 0; -+ unsigned ret = 0; - - might_fault(); -+ -+ if (size > INT_MAX) -+ return size; -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ if (!__access_ok(VERIFY_READ, src, size)) -+ return size; -+ if (!__access_ok(VERIFY_WRITE, dst, size)) -+ return size; -+#endif -+ - if (!__builtin_constant_p(size)) -- return copy_user_generic((__force void *)dst, -- (__force void *)src, size); -+ return copy_user_generic((__force_kernel void *)____m(dst), -+ (__force_kernel const void *)____m(src), size); - switch (size) { - case 1: { - u8 tmp; -- __get_user_asm(tmp, (u8 __user *)src, -+ __get_user_asm(tmp, (const u8 __user *)src, - ret, "b", "b", "=q", 1); - if (likely(!ret)) - __put_user_asm(tmp, (u8 __user *)dst, -@@ -185,7 +251,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) - } - case 2: { - u16 tmp; -- __get_user_asm(tmp, (u16 __user *)src, -+ __get_user_asm(tmp, (const u16 __user *)src, - ret, "w", "w", "=r", 2); - if (likely(!ret)) - __put_user_asm(tmp, (u16 __user *)dst, -@@ -195,7 +261,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) - - case 4: { - u32 tmp; -- __get_user_asm(tmp, (u32 __user *)src, -+ __get_user_asm(tmp, (const u32 __user *)src, - ret, "l", "k", "=r", 4); - if (likely(!ret)) - __put_user_asm(tmp, (u32 __user *)dst, -@@ -204,7 +270,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) - } - case 8: { - u64 tmp; -- __get_user_asm(tmp, (u64 __user *)src, -+ __get_user_asm(tmp, (const u64 __user *)src, - ret, "q", "", "=r", 8); - if (likely(!ret)) - __put_user_asm(tmp, (u64 __user *)dst, -@@ -212,44 +278,65 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) - return ret; - } - default: -- return copy_user_generic((__force void *)dst, -- (__force void *)src, size); -+ return copy_user_generic((__force_kernel void *)____m(dst), -+ (__force_kernel const void *)____m(src), size); - } - } - --__must_check unsigned long clear_user(void __user *mem, unsigned long len); --__must_check unsigned long __clear_user(void __user *mem, unsigned long len); -+__must_check unsigned long clear_user(void __user *mem, unsigned long len) __size_overflow(2); -+__must_check unsigned long __clear_user(void __user *mem, unsigned long len) __size_overflow(2); - - static __must_check __always_inline int --__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size) -+__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size) - { -- return copy_user_generic(dst, (__force const void *)src, size); -+ if (size > INT_MAX) -+ return size; -+ -+ return copy_user_generic(dst, (__force_kernel const void *)____m(src), size); - } - --static __must_check __always_inline int --__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size) -+static __must_check __always_inline unsigned long -+__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size) - { -- return copy_user_generic((__force void *)dst, src, size); -+ if (size > INT_MAX) -+ return size; -+ -+ return copy_user_generic((__force_kernel void *)____m(dst), src, size); - } - --extern long __copy_user_nocache(void *dst, const void __user *src, -- unsigned size, int zerorest); -+extern unsigned long __copy_user_nocache(void *dst, const void __user *src, -+ unsigned long size, int zerorest) __size_overflow(3); - --static inline int --__copy_from_user_nocache(void *dst, const void __user *src, unsigned size) -+static inline unsigned long __copy_from_user_nocache(void *dst, const void __user *src, unsigned long size) - { - might_sleep(); -+ -+ if (size > INT_MAX) -+ return size; -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ if (!__access_ok(VERIFY_READ, src, size)) -+ return size; -+#endif -+ - return __copy_user_nocache(dst, src, size, 1); - } - --static inline int --__copy_from_user_inatomic_nocache(void *dst, const void __user *src, -- unsigned size) -+static inline unsigned long __copy_from_user_inatomic_nocache(void *dst, const void __user *src, -+ unsigned long size) - { -+ if (size > INT_MAX) -+ return size; -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ if (!__access_ok(VERIFY_READ, src, size)) -+ return size; -+#endif -+ - return __copy_user_nocache(dst, src, size, 0); - } - --unsigned long --copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest); -+extern unsigned long -+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3); - - #endif /* _ASM_X86_UACCESS_64_H */ -diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h -index bb05228..d763d5b 100644 ---- a/arch/x86/include/asm/vdso.h -+++ b/arch/x86/include/asm/vdso.h -@@ -11,7 +11,7 @@ extern const char VDSO32_PRELINK[]; - #define VDSO32_SYMBOL(base, name) \ - ({ \ - extern const char VDSO32_##name[]; \ -- (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ -+ (void __user *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ - }) - #endif - -diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h -index 5b238981..77fdd78 100644 ---- a/arch/x86/include/asm/word-at-a-time.h -+++ b/arch/x86/include/asm/word-at-a-time.h -@@ -11,7 +11,7 @@ - * and shift, for example. - */ - struct word_at_a_time { -- const unsigned long one_bits, high_bits; -+ unsigned long one_bits, high_bits; - }; - - #define WORD_AT_A_TIME_CONSTANTS { REPEAT_BYTE(0x01), REPEAT_BYTE(0x80) } -diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h -index 38155f6..e4184ba 100644 ---- a/arch/x86/include/asm/x86_init.h -+++ b/arch/x86/include/asm/x86_init.h -@@ -29,7 +29,7 @@ struct x86_init_mpparse { - void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name); - void (*find_smp_config)(void); - void (*get_smp_config)(unsigned int early); --}; -+} __no_const; - - /** - * struct x86_init_resources - platform specific resource related ops -@@ -43,7 +43,7 @@ struct x86_init_resources { - void (*probe_roms)(void); - void (*reserve_resources)(void); - char *(*memory_setup)(void); --}; -+} __no_const; - - /** - * struct x86_init_irqs - platform specific interrupt setup -@@ -56,7 +56,7 @@ struct x86_init_irqs { - void (*pre_vector_init)(void); - void (*intr_init)(void); - void (*trap_init)(void); --}; -+} __no_const; - - /** - * struct x86_init_oem - oem platform specific customizing functions -@@ -66,7 +66,7 @@ struct x86_init_irqs { - struct x86_init_oem { - void (*arch_setup)(void); - void (*banner)(void); --}; -+} __no_const; - - /** - * struct x86_init_mapping - platform specific initial kernel pagetable setup -@@ -77,7 +77,7 @@ struct x86_init_oem { - */ - struct x86_init_mapping { - void (*pagetable_reserve)(u64 start, u64 end); --}; -+} __no_const; - - /** - * struct x86_init_paging - platform specific paging functions -@@ -87,7 +87,7 @@ struct x86_init_mapping { - struct x86_init_paging { - void (*pagetable_setup_start)(pgd_t *base); - void (*pagetable_setup_done)(pgd_t *base); --}; -+} __no_const; - - /** - * struct x86_init_timers - platform specific timer setup -@@ -102,7 +102,7 @@ struct x86_init_timers { - void (*tsc_pre_init)(void); - void (*timer_init)(void); - void (*wallclock_init)(void); --}; -+} __no_const; - - /** - * struct x86_init_iommu - platform specific iommu setup -@@ -110,7 +110,7 @@ struct x86_init_timers { - */ - struct x86_init_iommu { - int (*iommu_init)(void); --}; -+} __no_const; - - /** - * struct x86_init_pci - platform specific pci init functions -@@ -124,7 +124,7 @@ struct x86_init_pci { - int (*init)(void); - void (*init_irq)(void); - void (*fixup_irqs)(void); --}; -+} __no_const; - - /** - * struct x86_init_ops - functions for platform specific setup -@@ -140,7 +140,7 @@ struct x86_init_ops { - struct x86_init_timers timers; - struct x86_init_iommu iommu; - struct x86_init_pci pci; --}; -+} __no_const; - - /** - * struct x86_cpuinit_ops - platform specific cpu hotplug setups -@@ -151,7 +151,7 @@ struct x86_cpuinit_ops { - void (*setup_percpu_clockev)(void); - void (*early_percpu_clock_init)(void); - void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node); --}; -+} __no_const; - - /** - * struct x86_platform_ops - platform specific runtime functions -@@ -177,7 +177,7 @@ struct x86_platform_ops { - void (*save_sched_clock_state)(void); - void (*restore_sched_clock_state)(void); - void (*apic_post_init)(void); --}; -+} __no_const; - - struct pci_dev; - -@@ -186,14 +186,14 @@ struct x86_msi_ops { - void (*teardown_msi_irq)(unsigned int irq); - void (*teardown_msi_irqs)(struct pci_dev *dev); - void (*restore_msi_irqs)(struct pci_dev *dev, int irq); --}; -+} __no_const; - - struct x86_io_apic_ops { - void (*init) (void); - unsigned int (*read) (unsigned int apic, unsigned int reg); - void (*write) (unsigned int apic, unsigned int reg, unsigned int value); - void (*modify)(unsigned int apic, unsigned int reg, unsigned int value); --}; -+} __no_const; - - extern struct x86_init_ops x86_init; - extern struct x86_cpuinit_ops x86_cpuinit; -diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h -index 8a1b6f9..d47ba6d 100644 ---- a/arch/x86/include/asm/xsave.h -+++ b/arch/x86/include/asm/xsave.h -@@ -65,6 +65,8 @@ static inline int xsave_user(struct xsave_struct __user *buf) - { - int err; - -+ buf = (struct xsave_struct __user *)____m(buf); -+ - /* - * Clear the xsave header first, so that reserved fields are - * initialized to zero. -@@ -74,7 +76,9 @@ static inline int xsave_user(struct xsave_struct __user *buf) - if (unlikely(err)) - return -EFAULT; - -- __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x27\n" -+ __asm__ __volatile__("1:" -+ __copyuser_seg -+ ".byte " REX_PREFIX "0x0f,0xae,0x27\n" - "2:\n" - ".section .fixup,\"ax\"\n" - "3: movl $-1,%[err]\n" -@@ -93,11 +97,13 @@ static inline int xsave_user(struct xsave_struct __user *buf) - static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask) - { - int err; -- struct xsave_struct *xstate = ((__force struct xsave_struct *)buf); -+ struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)____m(buf)); - u32 lmask = mask; - u32 hmask = mask >> 32; - -- __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" -+ __asm__ __volatile__("1:" -+ __copyuser_seg -+ ".byte " REX_PREFIX "0x0f,0xae,0x2f\n" - "2:\n" - ".section .fixup,\"ax\"\n" - "3: movl $-1,%[err]\n" -diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c -index 1b8e5a0..354fd59 100644 ---- a/arch/x86/kernel/acpi/sleep.c -+++ b/arch/x86/kernel/acpi/sleep.c -@@ -69,8 +69,12 @@ int acpi_suspend_lowlevel(void) - #else /* CONFIG_64BIT */ - #ifdef CONFIG_SMP - stack_start = (unsigned long)temp_stack + sizeof(temp_stack); -+ -+ pax_open_kernel(); - early_gdt_descr.address = - (unsigned long)get_cpu_gdt_table(smp_processor_id()); -+ pax_close_kernel(); -+ - initial_gs = per_cpu_offset(smp_processor_id()); - #endif - initial_code = (unsigned long)wakeup_long64; -diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S -index 13ab720..95d5442 100644 ---- a/arch/x86/kernel/acpi/wakeup_32.S -+++ b/arch/x86/kernel/acpi/wakeup_32.S -@@ -30,13 +30,11 @@ wakeup_pmode_return: - # and restore the stack ... but you need gdt for this to work - movl saved_context_esp, %esp - -- movl %cs:saved_magic, %eax -- cmpl $0x12345678, %eax -+ cmpl $0x12345678, saved_magic - jne bogus_magic - - # jump to place where we left off -- movl saved_eip, %eax -- jmp *%eax -+ jmp *(saved_eip) - - bogus_magic: - jmp bogus_magic -diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c -index ced4534..3e75d69 100644 ---- a/arch/x86/kernel/alternative.c -+++ b/arch/x86/kernel/alternative.c -@@ -281,6 +281,13 @@ void __init_or_module apply_alternatives(struct alt_instr *start, - */ - for (a = start; a < end; a++) { - instr = (u8 *)&a->instr_offset + a->instr_offset; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ instr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+ if (instr < (u8 *)_text || (u8 *)_einittext <= instr) -+ instr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ - replacement = (u8 *)&a->repl_offset + a->repl_offset; - BUG_ON(a->replacementlen > a->instrlen); - BUG_ON(a->instrlen > sizeof(insnbuf)); -@@ -312,10 +319,16 @@ static void alternatives_smp_lock(const s32 *start, const s32 *end, - for (poff = start; poff < end; poff++) { - u8 *ptr = (u8 *)poff + *poff; - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr) -+ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ - if (!*poff || ptr < text || ptr >= text_end) - continue; - /* turn DS segment override prefix into lock prefix */ -- if (*ptr == 0x3e) -+ if (*ktla_ktva(ptr) == 0x3e) - text_poke(ptr, ((unsigned char []){0xf0}), 1); - }; - mutex_unlock(&text_mutex); -@@ -333,10 +346,16 @@ static void alternatives_smp_unlock(const s32 *start, const s32 *end, - for (poff = start; poff < end; poff++) { - u8 *ptr = (u8 *)poff + *poff; - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr) -+ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ - if (!*poff || ptr < text || ptr >= text_end) - continue; - /* turn lock prefix into DS segment override prefix */ -- if (*ptr == 0xf0) -+ if (*ktla_ktva(ptr) == 0xf0) - text_poke(ptr, ((unsigned char []){0x3E}), 1); - }; - mutex_unlock(&text_mutex); -@@ -505,7 +524,7 @@ void __init_or_module apply_paravirt(struct paravirt_patch_site *start, - - BUG_ON(p->len > MAX_PATCH_LEN); - /* prep the buffer with the original instructions */ -- memcpy(insnbuf, p->instr, p->len); -+ memcpy(insnbuf, ktla_ktva(p->instr), p->len); - used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf, - (unsigned long)p->instr, p->len); - -@@ -573,7 +592,7 @@ void __init alternative_instructions(void) - if (smp_alt_once) - free_init_pages("SMP alternatives", - (unsigned long)__smp_locks, -- (unsigned long)__smp_locks_end); -+ PAGE_ALIGN((unsigned long)__smp_locks_end)); - - restart_nmi(); - } -@@ -590,13 +609,17 @@ void __init alternative_instructions(void) - * instructions. And on the local CPU you need to be protected again NMI or MCE - * handlers seeing an inconsistent instruction while you patch. - */ --void *__init_or_module text_poke_early(void *addr, const void *opcode, -+void *__kprobes text_poke_early(void *addr, const void *opcode, - size_t len) - { - unsigned long flags; - local_irq_save(flags); -- memcpy(addr, opcode, len); -+ -+ pax_open_kernel(); -+ memcpy(ktla_ktva(addr), opcode, len); - sync_core(); -+ pax_close_kernel(); -+ - local_irq_restore(flags); - /* Could also do a CLFLUSH here to speed up CPU recovery; but - that causes hangs on some VIA CPUs. */ -@@ -618,36 +641,22 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode, - */ - void *__kprobes text_poke(void *addr, const void *opcode, size_t len) - { -- unsigned long flags; -- char *vaddr; -+ unsigned char *vaddr = ktla_ktva(addr); - struct page *pages[2]; -- int i; -+ size_t i; - - if (!core_kernel_text((unsigned long)addr)) { -- pages[0] = vmalloc_to_page(addr); -- pages[1] = vmalloc_to_page(addr + PAGE_SIZE); -+ pages[0] = vmalloc_to_page(vaddr); -+ pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE); - } else { -- pages[0] = virt_to_page(addr); -+ pages[0] = virt_to_page(vaddr); - WARN_ON(!PageReserved(pages[0])); -- pages[1] = virt_to_page(addr + PAGE_SIZE); -+ pages[1] = virt_to_page(vaddr + PAGE_SIZE); - } - BUG_ON(!pages[0]); -- local_irq_save(flags); -- set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0])); -- if (pages[1]) -- set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1])); -- vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0); -- memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len); -- clear_fixmap(FIX_TEXT_POKE0); -- if (pages[1]) -- clear_fixmap(FIX_TEXT_POKE1); -- local_flush_tlb(); -- sync_core(); -- /* Could also do a CLFLUSH here to speed up CPU recovery; but -- that causes hangs on some VIA CPUs. */ -+ text_poke_early(addr, opcode, len); - for (i = 0; i < len; i++) -- BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]); -- local_irq_restore(flags); -+ BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]); - return addr; - } - -diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c -index 24deb30..94a3426 100644 ---- a/arch/x86/kernel/apic/apic.c -+++ b/arch/x86/kernel/apic/apic.c -@@ -185,7 +185,7 @@ int first_system_vector = 0xfe; - /* - * Debug level, exported for io_apic.c - */ --unsigned int apic_verbosity; -+int apic_verbosity; - - int pic_mode; - -@@ -1923,7 +1923,7 @@ void smp_error_interrupt(struct pt_regs *regs) - apic_write(APIC_ESR, 0); - v1 = apic_read(APIC_ESR); - ack_APIC_irq(); -- atomic_inc(&irq_err_count); -+ atomic_inc_unchecked(&irq_err_count); - - apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x(%02x)", - smp_processor_id(), v0 , v1); -@@ -2155,7 +2155,9 @@ void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)) - for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { - /* Should happen once for each apic */ - WARN_ON((*drv)->eoi_write == eoi_write); -- (*drv)->eoi_write = eoi_write; -+ pax_open_kernel(); -+ *(void **)&(*drv)->eoi_write = eoi_write; -+ pax_close_kernel(); - } - } - -diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c -index c265593..137c4ac 100644 ---- a/arch/x86/kernel/apic/io_apic.c -+++ b/arch/x86/kernel/apic/io_apic.c -@@ -1084,7 +1084,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, - } - EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); - --void lock_vector_lock(void) -+void lock_vector_lock(void) __acquires(vector_lock) - { - /* Used to the online set of cpus does not change - * during assign_irq_vector. -@@ -1092,7 +1092,7 @@ void lock_vector_lock(void) - raw_spin_lock(&vector_lock); - } - --void unlock_vector_lock(void) -+void unlock_vector_lock(void) __releases(vector_lock) - { - raw_spin_unlock(&vector_lock); - } -@@ -2408,7 +2408,7 @@ static void ack_apic_edge(struct irq_data *data) - ack_APIC_irq(); - } - --atomic_t irq_mis_count; -+atomic_unchecked_t irq_mis_count; - - #ifdef CONFIG_GENERIC_PENDING_IRQ - static bool io_apic_level_ack_pending(struct irq_cfg *cfg) -@@ -2549,7 +2549,7 @@ static void ack_apic_level(struct irq_data *data) - * at the cpu. - */ - if (!(v & (1 << (i & 0x1f)))) { -- atomic_inc(&irq_mis_count); -+ atomic_inc_unchecked(&irq_mis_count); - - eoi_ioapic_irq(irq, cfg); - } -diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c -index d65464e..1035d31 100644 ---- a/arch/x86/kernel/apm_32.c -+++ b/arch/x86/kernel/apm_32.c -@@ -412,7 +412,7 @@ static DEFINE_MUTEX(apm_mutex); - * This is for buggy BIOS's that refer to (real mode) segment 0x40 - * even though they are called in protected mode. - */ --static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, -+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, - (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); - - static const char driver_version[] = "1.16ac"; /* no spaces */ -@@ -590,7 +590,10 @@ static long __apm_bios_call(void *_call) - BUG_ON(cpu != 0); - gdt = get_cpu_gdt_table(cpu); - save_desc_40 = gdt[0x40 / 8]; -+ -+ pax_open_kernel(); - gdt[0x40 / 8] = bad_bios_desc; -+ pax_close_kernel(); - - apm_irq_save(flags); - APM_DO_SAVE_SEGS; -@@ -599,7 +602,11 @@ static long __apm_bios_call(void *_call) - &call->esi); - APM_DO_RESTORE_SEGS; - apm_irq_restore(flags); -+ -+ pax_open_kernel(); - gdt[0x40 / 8] = save_desc_40; -+ pax_close_kernel(); -+ - put_cpu(); - - return call->eax & 0xff; -@@ -666,7 +673,10 @@ static long __apm_bios_call_simple(void *_call) - BUG_ON(cpu != 0); - gdt = get_cpu_gdt_table(cpu); - save_desc_40 = gdt[0x40 / 8]; -+ -+ pax_open_kernel(); - gdt[0x40 / 8] = bad_bios_desc; -+ pax_close_kernel(); - - apm_irq_save(flags); - APM_DO_SAVE_SEGS; -@@ -674,7 +684,11 @@ static long __apm_bios_call_simple(void *_call) - &call->eax); - APM_DO_RESTORE_SEGS; - apm_irq_restore(flags); -+ -+ pax_open_kernel(); - gdt[0x40 / 8] = save_desc_40; -+ pax_close_kernel(); -+ - put_cpu(); - return error; - } -@@ -2345,12 +2359,15 @@ static int __init apm_init(void) - * code to that CPU. - */ - gdt = get_cpu_gdt_table(0); -+ -+ pax_open_kernel(); - set_desc_base(&gdt[APM_CS >> 3], - (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4)); - set_desc_base(&gdt[APM_CS_16 >> 3], - (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4)); - set_desc_base(&gdt[APM_DS >> 3], - (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4)); -+ pax_close_kernel(); - - proc_create("apm", 0, NULL, &apm_file_ops); - -diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c -index 68de2dc..1f3c720 100644 ---- a/arch/x86/kernel/asm-offsets.c -+++ b/arch/x86/kernel/asm-offsets.c -@@ -33,6 +33,8 @@ void common(void) { - OFFSET(TI_status, thread_info, status); - OFFSET(TI_addr_limit, thread_info, addr_limit); - OFFSET(TI_preempt_count, thread_info, preempt_count); -+ OFFSET(TI_lowest_stack, thread_info, lowest_stack); -+ DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo)); - - BLANK(); - OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx); -@@ -53,8 +55,26 @@ void common(void) { - OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); - OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); - OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); -+#endif -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3); -+ OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3); -+#ifdef CONFIG_X86_64 -+ OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched); -+#endif - #endif - -+#endif -+ -+ BLANK(); -+ DEFINE(PAGE_SIZE_asm, PAGE_SIZE); -+ DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT); -+ DEFINE(THREAD_SIZE_asm, THREAD_SIZE); -+ - #ifdef CONFIG_XEN - BLANK(); - OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask); -diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c -index 1b4754f..fbb4227 100644 ---- a/arch/x86/kernel/asm-offsets_64.c -+++ b/arch/x86/kernel/asm-offsets_64.c -@@ -76,6 +76,7 @@ int main(void) - BLANK(); - #undef ENTRY - -+ DEFINE(TSS_size, sizeof(struct tss_struct)); - OFFSET(TSS_ist, tss_struct, x86_tss.ist); - BLANK(); - -diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile -index d30a6a9..79becab 100644 ---- a/arch/x86/kernel/cpu/Makefile -+++ b/arch/x86/kernel/cpu/Makefile -@@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg - CFLAGS_REMOVE_perf_event.o = -pg - endif - --# Make sure load_percpu_segment has no stackprotector --nostackp := $(call cc-option, -fno-stack-protector) --CFLAGS_common.o := $(nostackp) -- - obj-y := intel_cacheinfo.o scattered.o topology.o - obj-y += proc.o capflags.o powerflags.o common.o - obj-y += vmware.o hypervisor.o mshyperv.o -diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c -index e4da438..8b1c97c 100644 ---- a/arch/x86/kernel/cpu/amd.c -+++ b/arch/x86/kernel/cpu/amd.c -@@ -738,7 +738,7 @@ static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c, - unsigned int size) - { - /* AMD errata T13 (order #21922) */ -- if ((c->x86 == 6)) { -+ if (c->x86 == 6) { - /* Duron Rev A0 */ - if (c->x86_model == 3 && c->x86_mask == 0) - size = 64; -diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c -index a5fbc3c..2254849 100644 ---- a/arch/x86/kernel/cpu/common.c -+++ b/arch/x86/kernel/cpu/common.c -@@ -86,60 +86,6 @@ static const struct cpu_dev __cpuinitconst default_cpu = { - - static const struct cpu_dev *this_cpu __cpuinitdata = &default_cpu; - --DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = { --#ifdef CONFIG_X86_64 -- /* -- * We need valid kernel segments for data and code in long mode too -- * IRET will check the segment types kkeil 2000/10/28 -- * Also sysret mandates a special GDT layout -- * -- * TLS descriptors are currently at a different place compared to i386. -- * Hopefully nobody expects them at a fixed place (Wine?) -- */ -- [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff), -- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff), -- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff), -- [GDT_ENTRY_DEFAULT_USER32_CS] = GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff), -- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff), -- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff), --#else -- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xc09a, 0, 0xfffff), -- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), -- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff), -- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff), -- /* -- * Segments used for calling PnP BIOS have byte granularity. -- * They code segments and data segments have fixed 64k limits, -- * the transfer segment sizes are set at run time. -- */ -- /* 32-bit code */ -- [GDT_ENTRY_PNPBIOS_CS32] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), -- /* 16-bit code */ -- [GDT_ENTRY_PNPBIOS_CS16] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), -- /* 16-bit data */ -- [GDT_ENTRY_PNPBIOS_DS] = GDT_ENTRY_INIT(0x0092, 0, 0xffff), -- /* 16-bit data */ -- [GDT_ENTRY_PNPBIOS_TS1] = GDT_ENTRY_INIT(0x0092, 0, 0), -- /* 16-bit data */ -- [GDT_ENTRY_PNPBIOS_TS2] = GDT_ENTRY_INIT(0x0092, 0, 0), -- /* -- * The APM segments have byte granularity and their bases -- * are set at run time. All have 64k limits. -- */ -- /* 32-bit code */ -- [GDT_ENTRY_APMBIOS_BASE] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), -- /* 16-bit code */ -- [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), -- /* data */ -- [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff), -- -- [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), -- [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), -- GDT_STACK_CANARY_INIT --#endif --} }; --EXPORT_PER_CPU_SYMBOL_GPL(gdt_page); -- - static int __init x86_xsave_setup(char *s) - { - setup_clear_cpu_cap(X86_FEATURE_XSAVE); -@@ -376,7 +322,7 @@ void switch_to_new_gdt(int cpu) - { - struct desc_ptr gdt_descr; - -- gdt_descr.address = (long)get_cpu_gdt_table(cpu); -+ gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); - gdt_descr.size = GDT_SIZE - 1; - load_gdt(&gdt_descr); - /* Reload the per-cpu base */ -@@ -872,6 +818,10 @@ static void __cpuinit identify_cpu(struct cpuinfo_x86 *c) - /* Filter out anything that depends on CPUID levels we don't have */ - filter_cpuid_features(c, true); - -+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) -+ setup_clear_cpu_cap(X86_FEATURE_SEP); -+#endif -+ - /* If the model name is still unset, do table lookup. */ - if (!c->x86_model_id[0]) { - const char *p; -@@ -1054,10 +1004,12 @@ static __init int setup_disablecpuid(char *arg) - } - __setup("clearcpuid=", setup_disablecpuid); - -+DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo; -+EXPORT_PER_CPU_SYMBOL(current_tinfo); -+ - #ifdef CONFIG_X86_64 - struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table }; --struct desc_ptr nmi_idt_descr = { NR_VECTORS * 16 - 1, -- (unsigned long) nmi_idt_table }; -+struct desc_ptr nmi_idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) nmi_idt_table }; - - DEFINE_PER_CPU_FIRST(union irq_stack_union, - irq_stack_union) __aligned(PAGE_SIZE); -@@ -1071,7 +1023,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned = - EXPORT_PER_CPU_SYMBOL(current_task); - - DEFINE_PER_CPU(unsigned long, kernel_stack) = -- (unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE; -+ (unsigned long)&init_thread_union - 16 + THREAD_SIZE; - EXPORT_PER_CPU_SYMBOL(kernel_stack); - - DEFINE_PER_CPU(char *, irq_stack_ptr) = -@@ -1165,7 +1117,7 @@ struct pt_regs * __cpuinit idle_regs(struct pt_regs *regs) - { - memset(regs, 0, sizeof(struct pt_regs)); - regs->fs = __KERNEL_PERCPU; -- regs->gs = __KERNEL_STACK_CANARY; -+ savesegment(gs, regs->gs); - - return regs; - } -@@ -1220,7 +1172,7 @@ void __cpuinit cpu_init(void) - int i; - - cpu = stack_smp_processor_id(); -- t = &per_cpu(init_tss, cpu); -+ t = init_tss + cpu; - oist = &per_cpu(orig_ist, cpu); - - #ifdef CONFIG_NUMA -@@ -1246,7 +1198,7 @@ void __cpuinit cpu_init(void) - switch_to_new_gdt(cpu); - loadsegment(fs, 0); - -- load_idt((const struct desc_ptr *)&idt_descr); -+ load_idt(&idt_descr); - - memset(me->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8); - syscall_init(); -@@ -1255,7 +1207,6 @@ void __cpuinit cpu_init(void) - wrmsrl(MSR_KERNEL_GS_BASE, 0); - barrier(); - -- x86_configure_nx(); - if (cpu != 0) - enable_x2apic(); - -@@ -1311,7 +1262,7 @@ void __cpuinit cpu_init(void) - { - int cpu = smp_processor_id(); - struct task_struct *curr = current; -- struct tss_struct *t = &per_cpu(init_tss, cpu); -+ struct tss_struct *t = init_tss + cpu; - struct thread_struct *thread = &curr->thread; - - if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) { -diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c -index 0a4ce29..f211176 100644 ---- a/arch/x86/kernel/cpu/intel.c -+++ b/arch/x86/kernel/cpu/intel.c -@@ -174,7 +174,7 @@ static void __cpuinit trap_init_f00f_bug(void) - * Update the IDT descriptor and reload the IDT so that - * it uses the read-only mapped virtual address. - */ -- idt_descr.address = fix_to_virt(FIX_F00F_IDT); -+ idt_descr.address = (struct desc_struct *)fix_to_virt(FIX_F00F_IDT); - load_idt(&idt_descr); - } - #endif -diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c -index 292d025..b520c94 100644 ---- a/arch/x86/kernel/cpu/mcheck/mce.c -+++ b/arch/x86/kernel/cpu/mcheck/mce.c -@@ -45,6 +45,7 @@ - #include - #include - #include -+#include - - #include "mce-internal.h" - -@@ -253,7 +254,7 @@ static void print_mce(struct mce *m) - !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "", - m->cs, m->ip); - -- if (m->cs == __KERNEL_CS) -+ if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS) - print_symbol("{%s}", m->ip); - pr_cont("\n"); - } -@@ -286,10 +287,10 @@ static void print_mce(struct mce *m) - - #define PANIC_TIMEOUT 5 /* 5 seconds */ - --static atomic_t mce_paniced; -+static atomic_unchecked_t mce_paniced; - - static int fake_panic; --static atomic_t mce_fake_paniced; -+static atomic_unchecked_t mce_fake_paniced; - - /* Panic in progress. Enable interrupts and wait for final IPI */ - static void wait_for_panic(void) -@@ -313,7 +314,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) - /* - * Make sure only one CPU runs in machine check panic - */ -- if (atomic_inc_return(&mce_paniced) > 1) -+ if (atomic_inc_return_unchecked(&mce_paniced) > 1) - wait_for_panic(); - barrier(); - -@@ -321,7 +322,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) - console_verbose(); - } else { - /* Don't log too much for fake panic */ -- if (atomic_inc_return(&mce_fake_paniced) > 1) -+ if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1) - return; - } - /* First print corrected ones that are still unlogged */ -@@ -693,7 +694,7 @@ static int mce_timed_out(u64 *t) - * might have been modified by someone else. - */ - rmb(); -- if (atomic_read(&mce_paniced)) -+ if (atomic_read_unchecked(&mce_paniced)) - wait_for_panic(); - if (!monarch_timeout) - goto out; -@@ -1619,7 +1620,7 @@ static void unexpected_machine_check(struct pt_regs *regs, long error_code) - } - - /* Call the installed machine check handler for this CPU setup. */ --void (*machine_check_vector)(struct pt_regs *, long error_code) = -+void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only = - unexpected_machine_check; - - /* -@@ -1642,7 +1643,9 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c) - return; - } - -+ pax_open_kernel(); - machine_check_vector = do_machine_check; -+ pax_close_kernel(); - - __mcheck_cpu_init_generic(); - __mcheck_cpu_init_vendor(c); -@@ -1656,7 +1659,7 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c) - */ - - static DEFINE_SPINLOCK(mce_chrdev_state_lock); --static int mce_chrdev_open_count; /* #times opened */ -+static local_t mce_chrdev_open_count; /* #times opened */ - static int mce_chrdev_open_exclu; /* already open exclusive? */ - - static int mce_chrdev_open(struct inode *inode, struct file *file) -@@ -1664,7 +1667,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file) - spin_lock(&mce_chrdev_state_lock); - - if (mce_chrdev_open_exclu || -- (mce_chrdev_open_count && (file->f_flags & O_EXCL))) { -+ (local_read(&mce_chrdev_open_count) && (file->f_flags & O_EXCL))) { - spin_unlock(&mce_chrdev_state_lock); - - return -EBUSY; -@@ -1672,7 +1675,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file) - - if (file->f_flags & O_EXCL) - mce_chrdev_open_exclu = 1; -- mce_chrdev_open_count++; -+ local_inc(&mce_chrdev_open_count); - - spin_unlock(&mce_chrdev_state_lock); - -@@ -1683,7 +1686,7 @@ static int mce_chrdev_release(struct inode *inode, struct file *file) - { - spin_lock(&mce_chrdev_state_lock); - -- mce_chrdev_open_count--; -+ local_dec(&mce_chrdev_open_count); - mce_chrdev_open_exclu = 0; - - spin_unlock(&mce_chrdev_state_lock); -@@ -2407,7 +2410,7 @@ struct dentry *mce_get_debugfs_dir(void) - static void mce_reset(void) - { - cpu_missing = 0; -- atomic_set(&mce_fake_paniced, 0); -+ atomic_set_unchecked(&mce_fake_paniced, 0); - atomic_set(&mce_executing, 0); - atomic_set(&mce_callin, 0); - atomic_set(&global_nwo, 0); -diff --git a/arch/x86/kernel/cpu/mcheck/p5.c b/arch/x86/kernel/cpu/mcheck/p5.c -index 2d5454c..51987eb 100644 ---- a/arch/x86/kernel/cpu/mcheck/p5.c -+++ b/arch/x86/kernel/cpu/mcheck/p5.c -@@ -11,6 +11,7 @@ - #include - #include - #include -+#include - - /* By default disabled */ - int mce_p5_enabled __read_mostly; -@@ -49,7 +50,9 @@ void intel_p5_mcheck_init(struct cpuinfo_x86 *c) - if (!cpu_has(c, X86_FEATURE_MCE)) - return; - -+ pax_open_kernel(); - machine_check_vector = pentium_machine_check; -+ pax_close_kernel(); - /* Make sure the vector pointer is visible before we enable MCEs: */ - wmb(); - -diff --git a/arch/x86/kernel/cpu/mcheck/winchip.c b/arch/x86/kernel/cpu/mcheck/winchip.c -index 2d7998f..17c9de1 100644 ---- a/arch/x86/kernel/cpu/mcheck/winchip.c -+++ b/arch/x86/kernel/cpu/mcheck/winchip.c -@@ -10,6 +10,7 @@ - #include - #include - #include -+#include - - /* Machine check handler for WinChip C6: */ - static void winchip_machine_check(struct pt_regs *regs, long error_code) -@@ -23,7 +24,9 @@ void winchip_mcheck_init(struct cpuinfo_x86 *c) - { - u32 lo, hi; - -+ pax_open_kernel(); - machine_check_vector = winchip_machine_check; -+ pax_close_kernel(); - /* Make sure the vector pointer is visible before we enable MCEs: */ - wmb(); - -diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c -index 6b96110..0da73eb 100644 ---- a/arch/x86/kernel/cpu/mtrr/main.c -+++ b/arch/x86/kernel/cpu/mtrr/main.c -@@ -62,7 +62,7 @@ static DEFINE_MUTEX(mtrr_mutex); - u64 size_or_mask, size_and_mask; - static bool mtrr_aps_delayed_init; - --static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM]; -+static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only; - - const struct mtrr_ops *mtrr_if; - -diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h -index df5e41f..816c719 100644 ---- a/arch/x86/kernel/cpu/mtrr/mtrr.h -+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h -@@ -25,7 +25,7 @@ struct mtrr_ops { - int (*validate_add_page)(unsigned long base, unsigned long size, - unsigned int type); - int (*have_wrcomb)(void); --}; -+} __do_const; - - extern int generic_get_free_region(unsigned long base, unsigned long size, - int replace_reg); -diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c -index 915b876..171f845 100644 ---- a/arch/x86/kernel/cpu/perf_event.c -+++ b/arch/x86/kernel/cpu/perf_event.c -@@ -1757,7 +1757,7 @@ static unsigned long get_segment_base(unsigned int segment) - if (idx > GDT_ENTRIES) - return 0; - -- desc = __this_cpu_ptr(&gdt_page.gdt[0]); -+ desc = get_cpu_gdt_table(smp_processor_id()); - } - - return get_desc_base(desc + idx); -@@ -1847,7 +1847,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) - break; - - perf_callchain_store(entry, frame.return_address); -- fp = frame.next_frame; -+ fp = (const void __force_user *)frame.next_frame; - } - } - -diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c -index 6bca492..36e4496 100644 ---- a/arch/x86/kernel/cpu/perf_event_intel.c -+++ b/arch/x86/kernel/cpu/perf_event_intel.c -@@ -1947,10 +1947,10 @@ __init int intel_pmu_init(void) - * v2 and above have a perf capabilities MSR - */ - if (version > 1) { -- u64 capabilities; -+ u64 capabilities = x86_pmu.intel_cap.capabilities; - -- rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities); -- x86_pmu.intel_cap.capabilities = capabilities; -+ if (rdmsrl_safe(MSR_IA32_PERF_CAPABILITIES, &x86_pmu.intel_cap.capabilities)) -+ x86_pmu.intel_cap.capabilities = capabilities; - } - - intel_ds_init(); -diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c -index 13ad899..f642b9a 100644 ---- a/arch/x86/kernel/crash.c -+++ b/arch/x86/kernel/crash.c -@@ -36,10 +36,8 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs) - { - #ifdef CONFIG_X86_32 - struct pt_regs fixed_regs; --#endif - --#ifdef CONFIG_X86_32 -- if (!user_mode_vm(regs)) { -+ if (!user_mode(regs)) { - crash_fixup_ss_esp(&fixed_regs, regs); - regs = &fixed_regs; - } -diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c -index 37250fe..bf2ec74 100644 ---- a/arch/x86/kernel/doublefault_32.c -+++ b/arch/x86/kernel/doublefault_32.c -@@ -11,7 +11,7 @@ - - #define DOUBLEFAULT_STACKSIZE (1024) - static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; --#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) -+#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2) - - #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) - -@@ -21,7 +21,7 @@ static void doublefault_fn(void) - unsigned long gdt, tss; - - store_gdt(&gdt_desc); -- gdt = gdt_desc.address; -+ gdt = (unsigned long)gdt_desc.address; - - printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); - -@@ -58,10 +58,10 @@ struct tss_struct doublefault_tss __cacheline_aligned = { - /* 0x2 bit is always set */ - .flags = X86_EFLAGS_SF | 0x2, - .sp = STACK_START, -- .es = __USER_DS, -+ .es = __KERNEL_DS, - .cs = __KERNEL_CS, - .ss = __KERNEL_DS, -- .ds = __USER_DS, -+ .ds = __KERNEL_DS, - .fs = __KERNEL_PERCPU, - - .__cr3 = __pa_nodebug(swapper_pg_dir), -diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c -index ae42418b..787c16b 100644 ---- a/arch/x86/kernel/dumpstack.c -+++ b/arch/x86/kernel/dumpstack.c -@@ -2,6 +2,9 @@ - * Copyright (C) 1991, 1992 Linus Torvalds - * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs - */ -+#ifdef CONFIG_GRKERNSEC_HIDESYM -+#define __INCLUDED_BY_HIDESYM 1 -+#endif - #include - #include - #include -@@ -35,16 +38,14 @@ void printk_address(unsigned long address, int reliable) - static void - print_ftrace_graph_addr(unsigned long addr, void *data, - const struct stacktrace_ops *ops, -- struct thread_info *tinfo, int *graph) -+ struct task_struct *task, int *graph) - { -- struct task_struct *task; - unsigned long ret_addr; - int index; - - if (addr != (unsigned long)return_to_handler) - return; - -- task = tinfo->task; - index = task->curr_ret_stack; - - if (!task->ret_stack || index < *graph) -@@ -61,7 +62,7 @@ print_ftrace_graph_addr(unsigned long addr, void *data, - static inline void - print_ftrace_graph_addr(unsigned long addr, void *data, - const struct stacktrace_ops *ops, -- struct thread_info *tinfo, int *graph) -+ struct task_struct *task, int *graph) - { } - #endif - -@@ -72,10 +73,8 @@ print_ftrace_graph_addr(unsigned long addr, void *data, - * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack - */ - --static inline int valid_stack_ptr(struct thread_info *tinfo, -- void *p, unsigned int size, void *end) -+static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end) - { -- void *t = tinfo; - if (end) { - if (p < end && p >= (end-THREAD_SIZE)) - return 1; -@@ -86,14 +85,14 @@ static inline int valid_stack_ptr(struct thread_info *tinfo, - } - - unsigned long --print_context_stack(struct thread_info *tinfo, -+print_context_stack(struct task_struct *task, void *stack_start, - unsigned long *stack, unsigned long bp, - const struct stacktrace_ops *ops, void *data, - unsigned long *end, int *graph) - { - struct stack_frame *frame = (struct stack_frame *)bp; - -- while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) { -+ while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) { - unsigned long addr; - - addr = *stack; -@@ -105,7 +104,7 @@ print_context_stack(struct thread_info *tinfo, - } else { - ops->address(data, addr, 0); - } -- print_ftrace_graph_addr(addr, data, ops, tinfo, graph); -+ print_ftrace_graph_addr(addr, data, ops, task, graph); - } - stack++; - } -@@ -114,7 +113,7 @@ print_context_stack(struct thread_info *tinfo, - EXPORT_SYMBOL_GPL(print_context_stack); - - unsigned long --print_context_stack_bp(struct thread_info *tinfo, -+print_context_stack_bp(struct task_struct *task, void *stack_start, - unsigned long *stack, unsigned long bp, - const struct stacktrace_ops *ops, void *data, - unsigned long *end, int *graph) -@@ -122,7 +121,7 @@ print_context_stack_bp(struct thread_info *tinfo, - struct stack_frame *frame = (struct stack_frame *)bp; - unsigned long *ret_addr = &frame->return_address; - -- while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) { -+ while (valid_stack_ptr(stack_start, ret_addr, sizeof(*ret_addr), end)) { - unsigned long addr = *ret_addr; - - if (!__kernel_text_address(addr)) -@@ -131,7 +130,7 @@ print_context_stack_bp(struct thread_info *tinfo, - ops->address(data, addr, 1); - frame = frame->next_frame; - ret_addr = &frame->return_address; -- print_ftrace_graph_addr(addr, data, ops, tinfo, graph); -+ print_ftrace_graph_addr(addr, data, ops, task, graph); - } - - return (unsigned long)frame; -@@ -189,7 +188,7 @@ void dump_stack(void) - - bp = stack_frame(current, NULL); - printk("Pid: %d, comm: %.20s %s %s %.*s\n", -- current->pid, current->comm, print_tainted(), -+ task_pid_nr(current), current->comm, print_tainted(), - init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version); -@@ -225,6 +224,8 @@ unsigned __kprobes long oops_begin(void) - } - EXPORT_SYMBOL_GPL(oops_begin); - -+extern void gr_handle_kernel_exploit(void); -+ - void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr) - { - if (regs && kexec_should_crash(current)) -@@ -246,7 +247,10 @@ void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr) - panic("Fatal exception in interrupt"); - if (panic_on_oops) - panic("Fatal exception"); -- do_exit(signr); -+ -+ gr_handle_kernel_exploit(); -+ -+ do_group_exit(signr); - } - - int __kprobes __die(const char *str, struct pt_regs *regs, long err) -@@ -274,7 +278,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err) - print_modules(); - show_regs(regs); - #ifdef CONFIG_X86_32 -- if (user_mode_vm(regs)) { -+ if (user_mode(regs)) { - sp = regs->sp; - ss = regs->ss & 0xffff; - } else { -@@ -302,7 +306,7 @@ void die(const char *str, struct pt_regs *regs, long err) - unsigned long flags = oops_begin(); - int sig = SIGSEGV; - -- if (!user_mode_vm(regs)) -+ if (!user_mode(regs)) - report_bug(regs->ip, regs); - - if (__die(str, regs, err)) -diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c -index 1038a41..db2c12b 100644 ---- a/arch/x86/kernel/dumpstack_32.c -+++ b/arch/x86/kernel/dumpstack_32.c -@@ -38,15 +38,13 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - bp = stack_frame(task, regs); - - for (;;) { -- struct thread_info *context; -+ void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); - -- context = (struct thread_info *) -- ((unsigned long)stack & (~(THREAD_SIZE - 1))); -- bp = ops->walk_stack(context, stack, bp, ops, data, NULL, &graph); -+ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); - -- stack = (unsigned long *)context->previous_esp; -- if (!stack) -+ if (stack_start == task_stack_page(task)) - break; -+ stack = *(unsigned long **)stack_start; - if (ops->stack(data, "IRQ") < 0) - break; - touch_nmi_watchdog(); -@@ -86,7 +84,7 @@ void show_regs(struct pt_regs *regs) - { - int i; - -- __show_regs(regs, !user_mode_vm(regs)); -+ __show_regs(regs, !user_mode(regs)); - - pr_emerg("Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)\n", - TASK_COMM_LEN, current->comm, task_pid_nr(current), -@@ -95,21 +93,22 @@ void show_regs(struct pt_regs *regs) - * When in-kernel, we also print out the stack and code at the - * time of the fault.. - */ -- if (!user_mode_vm(regs)) { -+ if (!user_mode(regs)) { - unsigned int code_prologue = code_bytes * 43 / 64; - unsigned int code_len = code_bytes; - unsigned char c; - u8 *ip; -+ unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(0)[(0xffff & regs->cs) >> 3]); - - pr_emerg("Stack:\n"); - show_stack_log_lvl(NULL, regs, ®s->sp, 0, KERN_EMERG); - - pr_emerg("Code:"); - -- ip = (u8 *)regs->ip - code_prologue; -+ ip = (u8 *)regs->ip - code_prologue + cs_base; - if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) { - /* try starting at IP */ -- ip = (u8 *)regs->ip; -+ ip = (u8 *)regs->ip + cs_base; - code_len = code_len - code_prologue + 1; - } - for (i = 0; i < code_len; i++, ip++) { -@@ -118,7 +117,7 @@ void show_regs(struct pt_regs *regs) - pr_cont(" Bad EIP value."); - break; - } -- if (ip == (u8 *)regs->ip) -+ if (ip == (u8 *)regs->ip + cs_base) - pr_cont(" <%02x>", c); - else - pr_cont(" %02x", c); -@@ -131,6 +130,7 @@ int is_valid_bugaddr(unsigned long ip) - { - unsigned short ud2; - -+ ip = ktla_ktva(ip); - if (ip < PAGE_OFFSET) - return 0; - if (probe_kernel_address((unsigned short *)ip, ud2)) -@@ -138,3 +138,15 @@ int is_valid_bugaddr(unsigned long ip) - - return ud2 == 0x0b0f; - } -+ -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+void pax_check_alloca(unsigned long size) -+{ -+ unsigned long sp = (unsigned long)&sp, stack_left; -+ -+ /* all kernel stacks are of the same size */ -+ stack_left = sp & (THREAD_SIZE - 1); -+ BUG_ON(stack_left < 256 || size >= stack_left - 256); -+} -+EXPORT_SYMBOL(pax_check_alloca); -+#endif -diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c -index b653675..51cc8c0 100644 ---- a/arch/x86/kernel/dumpstack_64.c -+++ b/arch/x86/kernel/dumpstack_64.c -@@ -119,9 +119,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - unsigned long *irq_stack_end = - (unsigned long *)per_cpu(irq_stack_ptr, cpu); - unsigned used = 0; -- struct thread_info *tinfo; - int graph = 0; - unsigned long dummy; -+ void *stack_start; - - if (!task) - task = current; -@@ -142,10 +142,10 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - * current stack address. If the stacks consist of nested - * exceptions - */ -- tinfo = task_thread_info(task); - for (;;) { - char *id; - unsigned long *estack_end; -+ - estack_end = in_exception_stack(cpu, (unsigned long)stack, - &used, &id); - -@@ -153,7 +153,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - if (ops->stack(data, id) < 0) - break; - -- bp = ops->walk_stack(tinfo, stack, bp, ops, -+ bp = ops->walk_stack(task, estack_end - EXCEPTION_STKSZ, stack, bp, ops, - data, estack_end, &graph); - ops->stack(data, ""); - /* -@@ -161,6 +161,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - * second-to-last pointer (index -2 to end) in the - * exception stack: - */ -+ if ((u16)estack_end[-1] != __KERNEL_DS) -+ goto out; - stack = (unsigned long *) estack_end[-2]; - continue; - } -@@ -172,7 +174,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - if (in_irq_stack(stack, irq_stack, irq_stack_end)) { - if (ops->stack(data, "IRQ") < 0) - break; -- bp = ops->walk_stack(tinfo, stack, bp, -+ bp = ops->walk_stack(task, irq_stack, stack, bp, - ops, data, irq_stack_end, &graph); - /* - * We link to the next stack (which would be -@@ -191,7 +193,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, - /* - * This handles the process stack: - */ -- bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph); -+ stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); -+ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); -+out: - put_cpu(); - } - EXPORT_SYMBOL(dump_trace); -@@ -249,7 +253,7 @@ void show_regs(struct pt_regs *regs) - { - int i; - unsigned long sp; -- const int cpu = smp_processor_id(); -+ const int cpu = raw_smp_processor_id(); - struct task_struct *cur = current; - - sp = regs->sp; -@@ -304,3 +308,50 @@ int is_valid_bugaddr(unsigned long ip) - - return ud2 == 0x0b0f; - } -+ -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+void pax_check_alloca(unsigned long size) -+{ -+ unsigned long sp = (unsigned long)&sp, stack_start, stack_end; -+ unsigned cpu, used; -+ char *id; -+ -+ /* check the process stack first */ -+ stack_start = (unsigned long)task_stack_page(current); -+ stack_end = stack_start + THREAD_SIZE; -+ if (likely(stack_start <= sp && sp < stack_end)) { -+ unsigned long stack_left = sp & (THREAD_SIZE - 1); -+ BUG_ON(stack_left < 256 || size >= stack_left - 256); -+ return; -+ } -+ -+ cpu = get_cpu(); -+ -+ /* check the irq stacks */ -+ stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu); -+ stack_start = stack_end - IRQ_STACK_SIZE; -+ if (stack_start <= sp && sp < stack_end) { -+ unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1); -+ put_cpu(); -+ BUG_ON(stack_left < 256 || size >= stack_left - 256); -+ return; -+ } -+ -+ /* check the exception stacks */ -+ used = 0; -+ stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id); -+ stack_start = stack_end - EXCEPTION_STKSZ; -+ if (stack_end && stack_start <= sp && sp < stack_end) { -+ unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1); -+ put_cpu(); -+ BUG_ON(stack_left < 256 || size >= stack_left - 256); -+ return; -+ } -+ -+ put_cpu(); -+ -+ /* unknown stack */ -+ BUG(); -+} -+EXPORT_SYMBOL(pax_check_alloca); -+#endif -diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c -index 9b9f18b..9fcaa04 100644 ---- a/arch/x86/kernel/early_printk.c -+++ b/arch/x86/kernel/early_printk.c -@@ -7,6 +7,7 @@ - #include - #include - #include -+#include - #include - #include - #include -diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S -index 2a6919e..844eba9 100644 ---- a/arch/x86/kernel/entry_32.S -+++ b/arch/x86/kernel/entry_32.S -@@ -176,13 +176,153 @@ - /*CFI_REL_OFFSET gs, PT_GS*/ - .endm - .macro SET_KERNEL_GS reg -+ -+#ifdef CONFIG_CC_STACKPROTECTOR - movl $(__KERNEL_STACK_CANARY), \reg -+#elif defined(CONFIG_PAX_MEMORY_UDEREF) -+ movl $(__USER_DS), \reg -+#else -+ xorl \reg, \reg -+#endif -+ - movl \reg, %gs - .endm - - #endif /* CONFIG_X86_32_LAZY_GS */ - --.macro SAVE_ALL -+.macro pax_enter_kernel -+#ifdef CONFIG_PAX_KERNEXEC -+ call pax_enter_kernel -+#endif -+.endm -+ -+.macro pax_exit_kernel -+#ifdef CONFIG_PAX_KERNEXEC -+ call pax_exit_kernel -+#endif -+.endm -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ENTRY(pax_enter_kernel) -+#ifdef CONFIG_PARAVIRT -+ pushl %eax -+ pushl %ecx -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0) -+ mov %eax, %esi -+#else -+ mov %cr0, %esi -+#endif -+ bts $16, %esi -+ jnc 1f -+ mov %cs, %esi -+ cmp $__KERNEL_CS, %esi -+ jz 3f -+ ljmp $__KERNEL_CS, $3f -+1: ljmp $__KERNEXEC_KERNEL_CS, $2f -+2: -+#ifdef CONFIG_PARAVIRT -+ mov %esi, %eax -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) -+#else -+ mov %esi, %cr0 -+#endif -+3: -+#ifdef CONFIG_PARAVIRT -+ popl %ecx -+ popl %eax -+#endif -+ ret -+ENDPROC(pax_enter_kernel) -+ -+ENTRY(pax_exit_kernel) -+#ifdef CONFIG_PARAVIRT -+ pushl %eax -+ pushl %ecx -+#endif -+ mov %cs, %esi -+ cmp $__KERNEXEC_KERNEL_CS, %esi -+ jnz 2f -+#ifdef CONFIG_PARAVIRT -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); -+ mov %eax, %esi -+#else -+ mov %cr0, %esi -+#endif -+ btr $16, %esi -+ ljmp $__KERNEL_CS, $1f -+1: -+#ifdef CONFIG_PARAVIRT -+ mov %esi, %eax -+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0); -+#else -+ mov %esi, %cr0 -+#endif -+2: -+#ifdef CONFIG_PARAVIRT -+ popl %ecx -+ popl %eax -+#endif -+ ret -+ENDPROC(pax_exit_kernel) -+#endif -+ -+.macro pax_erase_kstack -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+ call pax_erase_kstack -+#endif -+.endm -+ -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+/* -+ * ebp: thread_info -+ */ -+ENTRY(pax_erase_kstack) -+ pushl %edi -+ pushl %ecx -+ pushl %eax -+ -+ mov TI_lowest_stack(%ebp), %edi -+ mov $-0xBEEF, %eax -+ std -+ -+1: mov %edi, %ecx -+ and $THREAD_SIZE_asm - 1, %ecx -+ shr $2, %ecx -+ repne scasl -+ jecxz 2f -+ -+ cmp $2*16, %ecx -+ jc 2f -+ -+ mov $2*16, %ecx -+ repe scasl -+ jecxz 2f -+ jne 1b -+ -+2: cld -+ mov %esp, %ecx -+ sub %edi, %ecx -+ -+ cmp $THREAD_SIZE_asm, %ecx -+ jb 3f -+ ud2 -+3: -+ -+ shr $2, %ecx -+ rep stosl -+ -+ mov TI_task_thread_sp0(%ebp), %edi -+ sub $128, %edi -+ mov %edi, TI_lowest_stack(%ebp) -+ -+ popl %eax -+ popl %ecx -+ popl %edi -+ ret -+ENDPROC(pax_erase_kstack) -+#endif -+ -+.macro __SAVE_ALL _DS - cld - PUSH_GS - pushl_cfi %fs -@@ -205,7 +345,7 @@ - CFI_REL_OFFSET ecx, 0 - pushl_cfi %ebx - CFI_REL_OFFSET ebx, 0 -- movl $(__USER_DS), %edx -+ movl $\_DS, %edx - movl %edx, %ds - movl %edx, %es - movl $(__KERNEL_PERCPU), %edx -@@ -213,6 +353,15 @@ - SET_KERNEL_GS %edx - .endm - -+.macro SAVE_ALL -+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF) -+ __SAVE_ALL __KERNEL_DS -+ pax_enter_kernel -+#else -+ __SAVE_ALL __USER_DS -+#endif -+.endm -+ - .macro RESTORE_INT_REGS - popl_cfi %ebx - CFI_RESTORE ebx -@@ -296,7 +445,7 @@ ENTRY(ret_from_fork) - popfl_cfi - jmp syscall_exit - CFI_ENDPROC --END(ret_from_fork) -+ENDPROC(ret_from_fork) - - /* - * Interrupt exit functions should be protected against kprobes -@@ -329,7 +478,15 @@ ret_from_intr: - andl $SEGMENT_RPL_MASK, %eax - #endif - cmpl $USER_RPL, %eax -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ jae resume_userspace -+ -+ pax_exit_kernel -+ jmp resume_kernel -+#else - jb resume_kernel # not returning to v8086 or userspace -+#endif - - ENTRY(resume_userspace) - LOCKDEP_SYS_EXIT -@@ -341,8 +498,8 @@ ENTRY(resume_userspace) - andl $_TIF_WORK_MASK, %ecx # is there any work to be done on - # int/exception return? - jne work_pending -- jmp restore_all --END(ret_from_exception) -+ jmp restore_all_pax -+ENDPROC(ret_from_exception) - - #ifdef CONFIG_PREEMPT - ENTRY(resume_kernel) -@@ -357,7 +514,7 @@ need_resched: - jz restore_all - call preempt_schedule_irq - jmp need_resched --END(resume_kernel) -+ENDPROC(resume_kernel) - #endif - CFI_ENDPROC - /* -@@ -391,28 +548,43 @@ sysenter_past_esp: - /*CFI_REL_OFFSET cs, 0*/ - /* - * Push current_thread_info()->sysenter_return to the stack. -- * A tiny bit of offset fixup is necessary - 4*4 means the 4 words -- * pushed above; +8 corresponds to copy_thread's esp0 setting. - */ -- pushl_cfi ((TI_sysenter_return)-THREAD_SIZE+8+4*4)(%esp) -+ pushl_cfi $0 - CFI_REL_OFFSET eip, 0 - - pushl_cfi %eax - SAVE_ALL -+ GET_THREAD_INFO(%ebp) -+ movl TI_sysenter_return(%ebp),%ebp -+ movl %ebp,PT_EIP(%esp) - ENABLE_INTERRUPTS(CLBR_NONE) - - /* - * Load the potential sixth argument from user stack. - * Careful about security. - */ -+ movl PT_OLDESP(%esp),%ebp -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ mov PT_OLDSS(%esp),%ds -+1: movl %ds:(%ebp),%ebp -+ push %ss -+ pop %ds -+#else - cmpl $__PAGE_OFFSET-3,%ebp - jae syscall_fault - 1: movl (%ebp),%ebp -+#endif -+ - movl %ebp,PT_EBP(%esp) - _ASM_EXTABLE(1b,syscall_fault) - - GET_THREAD_INFO(%ebp) - -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp) - jnz sysenter_audit - sysenter_do_call: -@@ -427,12 +599,24 @@ sysenter_do_call: - testl $_TIF_ALLWORK_MASK, %ecx - jne sysexit_audit - sysenter_exit: -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pushl_cfi %eax -+ movl %esp, %eax -+ call pax_randomize_kstack -+ popl_cfi %eax -+#endif -+ -+ pax_erase_kstack -+ - /* if something modifies registers it must also disable sysexit */ - movl PT_EIP(%esp), %edx - movl PT_OLDESP(%esp), %ecx - xorl %ebp,%ebp - TRACE_IRQS_ON - 1: mov PT_FS(%esp), %fs -+2: mov PT_DS(%esp), %ds -+3: mov PT_ES(%esp), %es - PTGS_TO_GS - ENABLE_INTERRUPTS_SYSEXIT - -@@ -449,6 +633,9 @@ sysenter_audit: - movl %eax,%edx /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */ - call __audit_syscall_entry -+ -+ pax_erase_kstack -+ - pushl_cfi %ebx - movl PT_EAX(%esp),%eax /* reload syscall number */ - jmp sysenter_do_call -@@ -474,10 +661,16 @@ sysexit_audit: - - CFI_ENDPROC - .pushsection .fixup,"ax" --2: movl $0,PT_FS(%esp) -+4: movl $0,PT_FS(%esp) -+ jmp 1b -+5: movl $0,PT_DS(%esp) -+ jmp 1b -+6: movl $0,PT_ES(%esp) - jmp 1b - .popsection -- _ASM_EXTABLE(1b,2b) -+ _ASM_EXTABLE(1b,4b) -+ _ASM_EXTABLE(2b,5b) -+ _ASM_EXTABLE(3b,6b) - PTGS_TO_GS_EX - ENDPROC(ia32_sysenter_target) - -@@ -491,6 +684,11 @@ ENTRY(system_call) - pushl_cfi %eax # save orig_eax - SAVE_ALL - GET_THREAD_INFO(%ebp) -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ - # system call tracing in operation / emulation - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp) - jnz syscall_trace_entry -@@ -509,6 +707,15 @@ syscall_exit: - testl $_TIF_ALLWORK_MASK, %ecx # current->work - jne syscall_exit_work - -+restore_all_pax: -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ movl %esp, %eax -+ call pax_randomize_kstack -+#endif -+ -+ pax_erase_kstack -+ - restore_all: - TRACE_IRQS_IRET - restore_all_notrace: -@@ -565,14 +772,34 @@ ldt_ss: - * compensating for the offset by changing to the ESPFIX segment with - * a base address that matches for the difference. - */ --#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8) -+#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx) - mov %esp, %edx /* load kernel esp */ - mov PT_OLDESP(%esp), %eax /* load userspace esp */ - mov %dx, %ax /* eax: new kernel esp */ - sub %eax, %edx /* offset (low word is 0) */ -+#ifdef CONFIG_SMP -+ movl PER_CPU_VAR(cpu_number), %ebx -+ shll $PAGE_SHIFT_asm, %ebx -+ addl $cpu_gdt_table, %ebx -+#else -+ movl $cpu_gdt_table, %ebx -+#endif - shr $16, %edx -- mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */ -- mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ mov %cr0, %esi -+ btr $16, %esi -+ mov %esi, %cr0 -+#endif -+ -+ mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */ -+ mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ bts $16, %esi -+ mov %esi, %cr0 -+#endif -+ - pushl_cfi $__ESPFIX_SS - pushl_cfi %eax /* new kernel esp */ - /* Disable interrupts, but do not irqtrace this section: we -@@ -601,35 +828,23 @@ work_resched: - movl TI_flags(%ebp), %ecx - andl $_TIF_WORK_MASK, %ecx # is there any work to be done other - # than syscall tracing? -- jz restore_all -+ jz restore_all_pax - testb $_TIF_NEED_RESCHED, %cl - jnz work_resched - - work_notifysig: # deal with pending signals and - # notify-resume requests -+ movl %esp, %eax - #ifdef CONFIG_VM86 - testl $X86_EFLAGS_VM, PT_EFLAGS(%esp) -- movl %esp, %eax -- jne work_notifysig_v86 # returning to kernel-space or -+ jz 1f # returning to kernel-space or - # vm86-space -- TRACE_IRQS_ON -- ENABLE_INTERRUPTS(CLBR_NONE) -- movb PT_CS(%esp), %bl -- andb $SEGMENT_RPL_MASK, %bl -- cmpb $USER_RPL, %bl -- jb resume_kernel -- xorl %edx, %edx -- call do_notify_resume -- jmp resume_userspace - -- ALIGN --work_notifysig_v86: - pushl_cfi %ecx # save ti_flags for do_notify_resume - call save_v86_state # %eax contains pt_regs pointer - popl_cfi %ecx - movl %eax, %esp --#else -- movl %esp, %eax -+1: - #endif - TRACE_IRQS_ON - ENABLE_INTERRUPTS(CLBR_NONE) -@@ -640,7 +855,7 @@ work_notifysig_v86: - xorl %edx, %edx - call do_notify_resume - jmp resume_userspace --END(work_pending) -+ENDPROC(work_pending) - - # perform syscall exit tracing - ALIGN -@@ -648,11 +863,14 @@ syscall_trace_entry: - movl $-ENOSYS,PT_EAX(%esp) - movl %esp, %eax - call syscall_trace_enter -+ -+ pax_erase_kstack -+ - /* What it returned is what we'll actually use. */ - cmpl $(NR_syscalls), %eax - jnae syscall_call - jmp syscall_exit --END(syscall_trace_entry) -+ENDPROC(syscall_trace_entry) - - # perform syscall exit tracing - ALIGN -@@ -665,20 +883,24 @@ syscall_exit_work: - movl %esp, %eax - call syscall_trace_leave - jmp resume_userspace --END(syscall_exit_work) -+ENDPROC(syscall_exit_work) - CFI_ENDPROC - - RING0_INT_FRAME # can't unwind into user space anyway - syscall_fault: -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ push %ss -+ pop %ds -+#endif - GET_THREAD_INFO(%ebp) - movl $-EFAULT,PT_EAX(%esp) - jmp resume_userspace --END(syscall_fault) -+ENDPROC(syscall_fault) - - syscall_badsys: - movl $-ENOSYS,PT_EAX(%esp) - jmp resume_userspace --END(syscall_badsys) -+ENDPROC(syscall_badsys) - CFI_ENDPROC - /* - * End of kprobes section -@@ -750,6 +972,36 @@ ENTRY(ptregs_clone) - CFI_ENDPROC - ENDPROC(ptregs_clone) - -+ ALIGN; -+ENTRY(kernel_execve) -+ CFI_STARTPROC -+ pushl_cfi %ebp -+ sub $PT_OLDSS+4,%esp -+ pushl_cfi %edi -+ pushl_cfi %ecx -+ pushl_cfi %eax -+ lea 3*4(%esp),%edi -+ mov $PT_OLDSS/4+1,%ecx -+ xorl %eax,%eax -+ rep stosl -+ popl_cfi %eax -+ popl_cfi %ecx -+ popl_cfi %edi -+ movl $X86_EFLAGS_IF,PT_EFLAGS(%esp) -+ pushl_cfi %esp -+ call sys_execve -+ add $4,%esp -+ CFI_ADJUST_CFA_OFFSET -4 -+ GET_THREAD_INFO(%ebp) -+ test %eax,%eax -+ jz syscall_exit -+ add $PT_OLDSS+4,%esp -+ CFI_ADJUST_CFA_OFFSET -PT_OLDSS-4 -+ popl_cfi %ebp -+ ret -+ CFI_ENDPROC -+ENDPROC(kernel_execve) -+ - .macro FIXUP_ESPFIX_STACK - /* - * Switch back for ESPFIX stack to the normal zerobased stack -@@ -759,8 +1011,15 @@ ENDPROC(ptregs_clone) - * normal stack and adjusts ESP with the matching offset. - */ - /* fixup the stack */ -- mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */ -- mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */ -+#ifdef CONFIG_SMP -+ movl PER_CPU_VAR(cpu_number), %ebx -+ shll $PAGE_SHIFT_asm, %ebx -+ addl $cpu_gdt_table, %ebx -+#else -+ movl $cpu_gdt_table, %ebx -+#endif -+ mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */ -+ mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */ - shl $16, %eax - addl %esp, %eax /* the adjusted stack pointer */ - pushl_cfi $__KERNEL_DS -@@ -813,7 +1072,7 @@ vector=vector+1 - .endr - 2: jmp common_interrupt - .endr --END(irq_entries_start) -+ENDPROC(irq_entries_start) - - .previous - END(interrupt) -@@ -861,7 +1120,7 @@ ENTRY(coprocessor_error) - pushl_cfi $do_coprocessor_error - jmp error_code - CFI_ENDPROC --END(coprocessor_error) -+ENDPROC(coprocessor_error) - - ENTRY(simd_coprocessor_error) - RING0_INT_FRAME -@@ -882,7 +1141,7 @@ ENTRY(simd_coprocessor_error) - #endif - jmp error_code - CFI_ENDPROC --END(simd_coprocessor_error) -+ENDPROC(simd_coprocessor_error) - - ENTRY(device_not_available) - RING0_INT_FRAME -@@ -890,18 +1149,18 @@ ENTRY(device_not_available) - pushl_cfi $do_device_not_available - jmp error_code - CFI_ENDPROC --END(device_not_available) -+ENDPROC(device_not_available) - - #ifdef CONFIG_PARAVIRT - ENTRY(native_iret) - iret - _ASM_EXTABLE(native_iret, iret_exc) --END(native_iret) -+ENDPROC(native_iret) - - ENTRY(native_irq_enable_sysexit) - sti - sysexit --END(native_irq_enable_sysexit) -+ENDPROC(native_irq_enable_sysexit) - #endif - - ENTRY(overflow) -@@ -910,7 +1169,7 @@ ENTRY(overflow) - pushl_cfi $do_overflow - jmp error_code - CFI_ENDPROC --END(overflow) -+ENDPROC(overflow) - - ENTRY(bounds) - RING0_INT_FRAME -@@ -918,7 +1177,7 @@ ENTRY(bounds) - pushl_cfi $do_bounds - jmp error_code - CFI_ENDPROC --END(bounds) -+ENDPROC(bounds) - - ENTRY(invalid_op) - RING0_INT_FRAME -@@ -926,7 +1185,7 @@ ENTRY(invalid_op) - pushl_cfi $do_invalid_op - jmp error_code - CFI_ENDPROC --END(invalid_op) -+ENDPROC(invalid_op) - - ENTRY(coprocessor_segment_overrun) - RING0_INT_FRAME -@@ -934,35 +1193,35 @@ ENTRY(coprocessor_segment_overrun) - pushl_cfi $do_coprocessor_segment_overrun - jmp error_code - CFI_ENDPROC --END(coprocessor_segment_overrun) -+ENDPROC(coprocessor_segment_overrun) - - ENTRY(invalid_TSS) - RING0_EC_FRAME - pushl_cfi $do_invalid_TSS - jmp error_code - CFI_ENDPROC --END(invalid_TSS) -+ENDPROC(invalid_TSS) - - ENTRY(segment_not_present) - RING0_EC_FRAME - pushl_cfi $do_segment_not_present - jmp error_code - CFI_ENDPROC --END(segment_not_present) -+ENDPROC(segment_not_present) - - ENTRY(stack_segment) - RING0_EC_FRAME - pushl_cfi $do_stack_segment - jmp error_code - CFI_ENDPROC --END(stack_segment) -+ENDPROC(stack_segment) - - ENTRY(alignment_check) - RING0_EC_FRAME - pushl_cfi $do_alignment_check - jmp error_code - CFI_ENDPROC --END(alignment_check) -+ENDPROC(alignment_check) - - ENTRY(divide_error) - RING0_INT_FRAME -@@ -970,7 +1229,7 @@ ENTRY(divide_error) - pushl_cfi $do_divide_error - jmp error_code - CFI_ENDPROC --END(divide_error) -+ENDPROC(divide_error) - - #ifdef CONFIG_X86_MCE - ENTRY(machine_check) -@@ -979,7 +1238,7 @@ ENTRY(machine_check) - pushl_cfi machine_check_vector - jmp error_code - CFI_ENDPROC --END(machine_check) -+ENDPROC(machine_check) - #endif - - ENTRY(spurious_interrupt_bug) -@@ -988,7 +1247,7 @@ ENTRY(spurious_interrupt_bug) - pushl_cfi $do_spurious_interrupt_bug - jmp error_code - CFI_ENDPROC --END(spurious_interrupt_bug) -+ENDPROC(spurious_interrupt_bug) - /* - * End of kprobes section - */ -@@ -1101,7 +1360,7 @@ BUILD_INTERRUPT3(xen_hvm_callback_vector, XEN_HVM_EVTCHN_CALLBACK, - - ENTRY(mcount) - ret --END(mcount) -+ENDPROC(mcount) - - ENTRY(ftrace_caller) - cmpl $0, function_trace_stop -@@ -1130,7 +1389,7 @@ ftrace_graph_call: - .globl ftrace_stub - ftrace_stub: - ret --END(ftrace_caller) -+ENDPROC(ftrace_caller) - - #else /* ! CONFIG_DYNAMIC_FTRACE */ - -@@ -1166,7 +1425,7 @@ trace: - popl %ecx - popl %eax - jmp ftrace_stub --END(mcount) -+ENDPROC(mcount) - #endif /* CONFIG_DYNAMIC_FTRACE */ - #endif /* CONFIG_FUNCTION_TRACER */ - -@@ -1187,7 +1446,7 @@ ENTRY(ftrace_graph_caller) - popl %ecx - popl %eax - ret --END(ftrace_graph_caller) -+ENDPROC(ftrace_graph_caller) - - .globl return_to_handler - return_to_handler: -@@ -1242,15 +1501,18 @@ error_code: - movl $-1, PT_ORIG_EAX(%esp) # no syscall to restart - REG_TO_PTGS %ecx - SET_KERNEL_GS %ecx -- movl $(__USER_DS), %ecx -+ movl $(__KERNEL_DS), %ecx - movl %ecx, %ds - movl %ecx, %es -+ -+ pax_enter_kernel -+ - TRACE_IRQS_OFF - movl %esp,%eax # pt_regs pointer - call *%edi - jmp ret_from_exception - CFI_ENDPROC --END(page_fault) -+ENDPROC(page_fault) - - /* - * Debug traps and NMI can happen at the one SYSENTER instruction -@@ -1292,7 +1554,7 @@ debug_stack_correct: - call do_debug - jmp ret_from_exception - CFI_ENDPROC --END(debug) -+ENDPROC(debug) - - /* - * NMI is doubly nasty. It can happen _while_ we're handling -@@ -1329,6 +1591,9 @@ nmi_stack_correct: - xorl %edx,%edx # zero error code - movl %esp,%eax # pt_regs pointer - call do_nmi -+ -+ pax_exit_kernel -+ - jmp restore_all_notrace - CFI_ENDPROC - -@@ -1365,12 +1630,15 @@ nmi_espfix_stack: - FIXUP_ESPFIX_STACK # %eax == %esp - xorl %edx,%edx # zero error code - call do_nmi -+ -+ pax_exit_kernel -+ - RESTORE_REGS - lss 12+4(%esp), %esp # back to espfix stack - CFI_ADJUST_CFA_OFFSET -24 - jmp irq_return - CFI_ENDPROC --END(nmi) -+ENDPROC(nmi) - - ENTRY(int3) - RING0_INT_FRAME -@@ -1382,14 +1650,14 @@ ENTRY(int3) - call do_int3 - jmp ret_from_exception - CFI_ENDPROC --END(int3) -+ENDPROC(int3) - - ENTRY(general_protection) - RING0_EC_FRAME - pushl_cfi $do_general_protection - jmp error_code - CFI_ENDPROC --END(general_protection) -+ENDPROC(general_protection) - - #ifdef CONFIG_KVM_GUEST - ENTRY(async_page_fault) -@@ -1397,7 +1665,7 @@ ENTRY(async_page_fault) - pushl_cfi $do_async_page_fault - jmp error_code - CFI_ENDPROC --END(async_page_fault) -+ENDPROC(async_page_fault) - #endif - - /* -diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S -index dcdd0ea..a520f76 100644 ---- a/arch/x86/kernel/entry_64.S -+++ b/arch/x86/kernel/entry_64.S -@@ -57,6 +57,8 @@ - #include - #include - #include -+#include -+#include - - /* Avoid __ASSEMBLER__'ifying just for this. */ - #include -@@ -70,8 +72,9 @@ - #ifdef CONFIG_FUNCTION_TRACER - #ifdef CONFIG_DYNAMIC_FTRACE - ENTRY(mcount) -+ pax_force_retaddr - retq --END(mcount) -+ENDPROC(mcount) - - ENTRY(ftrace_caller) - cmpl $0, function_trace_stop -@@ -94,8 +97,9 @@ GLOBAL(ftrace_graph_call) - #endif - - GLOBAL(ftrace_stub) -+ pax_force_retaddr - retq --END(ftrace_caller) -+ENDPROC(ftrace_caller) - - #else /* ! CONFIG_DYNAMIC_FTRACE */ - ENTRY(mcount) -@@ -114,6 +118,7 @@ ENTRY(mcount) - #endif - - GLOBAL(ftrace_stub) -+ pax_force_retaddr - retq - - trace: -@@ -123,12 +128,13 @@ trace: - movq 8(%rbp), %rsi - subq $MCOUNT_INSN_SIZE, %rdi - -+ pax_force_fptr ftrace_trace_function - call *ftrace_trace_function - - MCOUNT_RESTORE_FRAME - - jmp ftrace_stub --END(mcount) -+ENDPROC(mcount) - #endif /* CONFIG_DYNAMIC_FTRACE */ - #endif /* CONFIG_FUNCTION_TRACER */ - -@@ -148,8 +154,9 @@ ENTRY(ftrace_graph_caller) - - MCOUNT_RESTORE_FRAME - -+ pax_force_retaddr - retq --END(ftrace_graph_caller) -+ENDPROC(ftrace_graph_caller) - - GLOBAL(return_to_handler) - subq $24, %rsp -@@ -165,6 +172,7 @@ GLOBAL(return_to_handler) - movq 8(%rsp), %rdx - movq (%rsp), %rax - addq $24, %rsp -+ pax_force_fptr %rdi - jmp *%rdi - #endif - -@@ -180,6 +188,273 @@ ENTRY(native_usergs_sysret64) - ENDPROC(native_usergs_sysret64) - #endif /* CONFIG_PARAVIRT */ - -+ .macro ljmpq sel, off -+#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM) -+ .byte 0x48; ljmp *1234f(%rip) -+ .pushsection .rodata -+ .align 16 -+ 1234: .quad \off; .word \sel -+ .popsection -+#else -+ pushq $\sel -+ pushq $\off -+ lretq -+#endif -+ .endm -+ -+ .macro pax_enter_kernel -+ pax_set_fptr_mask -+#ifdef CONFIG_PAX_KERNEXEC -+ call pax_enter_kernel -+#endif -+ .endm -+ -+ .macro pax_exit_kernel -+#ifdef CONFIG_PAX_KERNEXEC -+ call pax_exit_kernel -+#endif -+ .endm -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ENTRY(pax_enter_kernel) -+ pushq %rdi -+ -+#ifdef CONFIG_PARAVIRT -+ PV_SAVE_REGS(CLBR_RDI) -+#endif -+ -+ GET_CR0_INTO_RDI -+ bts $16,%rdi -+ jnc 3f -+ mov %cs,%edi -+ cmp $__KERNEL_CS,%edi -+ jnz 2f -+1: -+ -+#ifdef CONFIG_PARAVIRT -+ PV_RESTORE_REGS(CLBR_RDI) -+#endif -+ -+ popq %rdi -+ pax_force_retaddr -+ retq -+ -+2: ljmpq __KERNEL_CS,1f -+3: ljmpq __KERNEXEC_KERNEL_CS,4f -+4: SET_RDI_INTO_CR0 -+ jmp 1b -+ENDPROC(pax_enter_kernel) -+ -+ENTRY(pax_exit_kernel) -+ pushq %rdi -+ -+#ifdef CONFIG_PARAVIRT -+ PV_SAVE_REGS(CLBR_RDI) -+#endif -+ -+ mov %cs,%rdi -+ cmp $__KERNEXEC_KERNEL_CS,%edi -+ jz 2f -+1: -+ -+#ifdef CONFIG_PARAVIRT -+ PV_RESTORE_REGS(CLBR_RDI); -+#endif -+ -+ popq %rdi -+ pax_force_retaddr -+ retq -+ -+2: GET_CR0_INTO_RDI -+ btr $16,%rdi -+ ljmpq __KERNEL_CS,3f -+3: SET_RDI_INTO_CR0 -+ jmp 1b -+ENDPROC(pax_exit_kernel) -+#endif -+ -+ .macro pax_enter_kernel_user -+ pax_set_fptr_mask -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ call pax_enter_kernel_user -+#endif -+ .endm -+ -+ .macro pax_exit_kernel_user -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ call pax_exit_kernel_user -+#endif -+#ifdef CONFIG_PAX_RANDKSTACK -+ pushq %rax -+ call pax_randomize_kstack -+ popq %rax -+#endif -+ .endm -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ENTRY(pax_enter_kernel_user) -+ pushq %rdi -+ pushq %rbx -+ -+#ifdef CONFIG_PARAVIRT -+ PV_SAVE_REGS(CLBR_RDI) -+#endif -+ -+ GET_CR3_INTO_RDI -+ mov %rdi,%rbx -+ add $__START_KERNEL_map,%rbx -+ sub phys_base(%rip),%rbx -+ -+#ifdef CONFIG_PARAVIRT -+ pushq %rdi -+ cmpl $0, pv_info+PARAVIRT_enabled -+ jz 1f -+ i = 0 -+ .rept USER_PGD_PTRS -+ mov i*8(%rbx),%rsi -+ mov $0,%sil -+ lea i*8(%rbx),%rdi -+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) -+ i = i + 1 -+ .endr -+ jmp 2f -+1: -+#endif -+ -+ i = 0 -+ .rept USER_PGD_PTRS -+ movb $0,i*8(%rbx) -+ i = i + 1 -+ .endr -+ -+#ifdef CONFIG_PARAVIRT -+2: popq %rdi -+#endif -+ SET_RDI_INTO_CR3 -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ GET_CR0_INTO_RDI -+ bts $16,%rdi -+ SET_RDI_INTO_CR0 -+#endif -+ -+#ifdef CONFIG_PARAVIRT -+ PV_RESTORE_REGS(CLBR_RDI) -+#endif -+ -+ popq %rbx -+ popq %rdi -+ pax_force_retaddr -+ retq -+ENDPROC(pax_enter_kernel_user) -+ -+ENTRY(pax_exit_kernel_user) -+ push %rdi -+ -+#ifdef CONFIG_PARAVIRT -+ pushq %rbx -+ PV_SAVE_REGS(CLBR_RDI) -+#endif -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ GET_CR0_INTO_RDI -+ btr $16,%rdi -+ SET_RDI_INTO_CR0 -+#endif -+ -+ GET_CR3_INTO_RDI -+ add $__START_KERNEL_map,%rdi -+ sub phys_base(%rip),%rdi -+ -+#ifdef CONFIG_PARAVIRT -+ cmpl $0, pv_info+PARAVIRT_enabled -+ jz 1f -+ mov %rdi,%rbx -+ i = 0 -+ .rept USER_PGD_PTRS -+ mov i*8(%rbx),%rsi -+ mov $0x67,%sil -+ lea i*8(%rbx),%rdi -+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) -+ i = i + 1 -+ .endr -+ jmp 2f -+1: -+#endif -+ -+ i = 0 -+ .rept USER_PGD_PTRS -+ movb $0x67,i*8(%rdi) -+ i = i + 1 -+ .endr -+ -+#ifdef CONFIG_PARAVIRT -+2: PV_RESTORE_REGS(CLBR_RDI) -+ popq %rbx -+#endif -+ -+ popq %rdi -+ pax_force_retaddr -+ retq -+ENDPROC(pax_exit_kernel_user) -+#endif -+ -+.macro pax_erase_kstack -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+ call pax_erase_kstack -+#endif -+.endm -+ -+#ifdef CONFIG_PAX_MEMORY_STACKLEAK -+ENTRY(pax_erase_kstack) -+ pushq %rdi -+ pushq %rcx -+ pushq %rax -+ pushq %r11 -+ -+ GET_THREAD_INFO(%r11) -+ mov TI_lowest_stack(%r11), %rdi -+ mov $-0xBEEF, %rax -+ std -+ -+1: mov %edi, %ecx -+ and $THREAD_SIZE_asm - 1, %ecx -+ shr $3, %ecx -+ repne scasq -+ jecxz 2f -+ -+ cmp $2*8, %ecx -+ jc 2f -+ -+ mov $2*8, %ecx -+ repe scasq -+ jecxz 2f -+ jne 1b -+ -+2: cld -+ mov %esp, %ecx -+ sub %edi, %ecx -+ -+ cmp $THREAD_SIZE_asm, %rcx -+ jb 3f -+ ud2 -+3: -+ -+ shr $3, %ecx -+ rep stosq -+ -+ mov TI_task_thread_sp0(%r11), %rdi -+ sub $256, %rdi -+ mov %rdi, TI_lowest_stack(%r11) -+ -+ popq %r11 -+ popq %rax -+ popq %rcx -+ popq %rdi -+ pax_force_retaddr -+ ret -+ENDPROC(pax_erase_kstack) -+#endif - - .macro TRACE_IRQS_IRETQ offset=ARGOFFSET - #ifdef CONFIG_TRACE_IRQFLAGS -@@ -271,8 +546,8 @@ ENDPROC(native_usergs_sysret64) - .endm - - .macro UNFAKE_STACK_FRAME -- addq $8*6, %rsp -- CFI_ADJUST_CFA_OFFSET -(6*8) -+ addq $8*6 + ARG_SKIP, %rsp -+ CFI_ADJUST_CFA_OFFSET -(6*8 + ARG_SKIP) - .endm - - /* -@@ -359,7 +634,7 @@ ENDPROC(native_usergs_sysret64) - movq %rsp, %rsi - - leaq -RBP(%rsp),%rdi /* arg1 for handler */ -- testl $3, CS-RBP(%rsi) -+ testb $3, CS-RBP(%rsi) - je 1f - SWAPGS - /* -@@ -394,9 +669,10 @@ ENTRY(save_rest) - movq_cfi r15, R15+16 - movq %r11, 8(%rsp) /* return address */ - FIXUP_TOP_OF_STACK %r11, 16 -+ pax_force_retaddr - ret - CFI_ENDPROC --END(save_rest) -+ENDPROC(save_rest) - - /* save complete stack frame */ - .pushsection .kprobes.text, "ax" -@@ -425,9 +701,10 @@ ENTRY(save_paranoid) - js 1f /* negative -> in kernel */ - SWAPGS - xorl %ebx,%ebx --1: ret -+1: pax_force_retaddr_bts -+ ret - CFI_ENDPROC --END(save_paranoid) -+ENDPROC(save_paranoid) - .popsection - - /* -@@ -449,7 +726,7 @@ ENTRY(ret_from_fork) - - RESTORE_REST - -- testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread? -+ testb $3, CS-ARGOFFSET(%rsp) # from kernel_thread? - jz retint_restore_args - - testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET -@@ -459,7 +736,7 @@ ENTRY(ret_from_fork) - jmp ret_from_sys_call # go to the SYSRET fastpath - - CFI_ENDPROC --END(ret_from_fork) -+ENDPROC(ret_from_fork) - - /* - * System call entry. Up to 6 arguments in registers are supported. -@@ -495,7 +772,7 @@ END(ret_from_fork) - ENTRY(system_call) - CFI_STARTPROC simple - CFI_SIGNAL_FRAME -- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET -+ CFI_DEF_CFA rsp,0 - CFI_REGISTER rip,rcx - /*CFI_REGISTER rflags,r11*/ - SWAPGS_UNSAFE_STACK -@@ -508,16 +785,23 @@ GLOBAL(system_call_after_swapgs) - - movq %rsp,PER_CPU_VAR(old_rsp) - movq PER_CPU_VAR(kernel_stack),%rsp -+ SAVE_ARGS 8*6,0 -+ pax_enter_kernel_user -+ -+#ifdef CONFIG_PAX_RANDKSTACK -+ pax_erase_kstack -+#endif -+ - /* - * No need to follow this irqs off/on section - it's straight - * and short: - */ - ENABLE_INTERRUPTS(CLBR_NONE) -- SAVE_ARGS 8,0 - movq %rax,ORIG_RAX-ARGOFFSET(%rsp) - movq %rcx,RIP-ARGOFFSET(%rsp) - CFI_REL_OFFSET rip,RIP-ARGOFFSET -- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ GET_THREAD_INFO(%rcx) -+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%rcx) - jnz tracesys - system_call_fastpath: - #if __SYSCALL_MASK == ~0 -@@ -527,7 +811,7 @@ system_call_fastpath: - cmpl $__NR_syscall_max,%eax - #endif - ja badsys -- movq %r10,%rcx -+ movq R10-ARGOFFSET(%rsp),%rcx - call *sys_call_table(,%rax,8) # XXX: rip relative - movq %rax,RAX-ARGOFFSET(%rsp) - /* -@@ -541,10 +825,13 @@ sysret_check: - LOCKDEP_SYS_EXIT - DISABLE_INTERRUPTS(CLBR_NONE) - TRACE_IRQS_OFF -- movl TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET),%edx -+ GET_THREAD_INFO(%rcx) -+ movl TI_flags(%rcx),%edx - andl %edi,%edx - jnz sysret_careful - CFI_REMEMBER_STATE -+ pax_exit_kernel_user -+ pax_erase_kstack - /* - * sysretq will re-enable interrupts: - */ -@@ -596,14 +883,18 @@ badsys: - * jump back to the normal fast path. - */ - auditsys: -- movq %r10,%r9 /* 6th arg: 4th syscall arg */ -+ movq R10-ARGOFFSET(%rsp),%r9 /* 6th arg: 4th syscall arg */ - movq %rdx,%r8 /* 5th arg: 3rd syscall arg */ - movq %rsi,%rcx /* 4th arg: 2nd syscall arg */ - movq %rdi,%rdx /* 3rd arg: 1st syscall arg */ - movq %rax,%rsi /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */ - call __audit_syscall_entry -+ -+ pax_erase_kstack -+ - LOAD_ARGS 0 /* reload call-clobbered registers */ -+ pax_set_fptr_mask - jmp system_call_fastpath - - /* -@@ -624,7 +915,7 @@ sysret_audit: - /* Do syscall tracing */ - tracesys: - #ifdef CONFIG_AUDITSYSCALL -- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) -+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%rcx) - jz auditsys - #endif - SAVE_REST -@@ -632,12 +923,16 @@ tracesys: - FIXUP_TOP_OF_STACK %rdi - movq %rsp,%rdi - call syscall_trace_enter -+ -+ pax_erase_kstack -+ - /* - * Reload arg registers from stack in case ptrace changed them. - * We don't reload %rax because syscall_trace_enter() returned - * the value it wants us to use in the table lookup. - */ - LOAD_ARGS ARGOFFSET, 1 -+ pax_set_fptr_mask - RESTORE_REST - #if __SYSCALL_MASK == ~0 - cmpq $__NR_syscall_max,%rax -@@ -646,7 +941,7 @@ tracesys: - cmpl $__NR_syscall_max,%eax - #endif - ja int_ret_from_sys_call /* RAX(%rsp) set to -ENOSYS above */ -- movq %r10,%rcx /* fixup for C */ -+ movq R10-ARGOFFSET(%rsp),%rcx /* fixup for C */ - call *sys_call_table(,%rax,8) - movq %rax,RAX-ARGOFFSET(%rsp) - /* Use IRET because user could have changed frame */ -@@ -667,7 +962,9 @@ GLOBAL(int_with_check) - andl %edi,%edx - jnz int_careful - andl $~TS_COMPAT,TI_status(%rcx) -- jmp retint_swapgs -+ pax_exit_kernel_user -+ pax_erase_kstack -+ jmp retint_swapgs_pax - - /* Either reschedule or signal or syscall exit tracking needed. */ - /* First do a reschedule test. */ -@@ -713,7 +1010,7 @@ int_restore_rest: - TRACE_IRQS_OFF - jmp int_with_check - CFI_ENDPROC --END(system_call) -+ENDPROC(system_call) - - /* - * Certain special system calls that need to save a complete full stack frame. -@@ -729,7 +1026,7 @@ ENTRY(\label) - call \func - jmp ptregscall_common - CFI_ENDPROC --END(\label) -+ENDPROC(\label) - .endm - - PTREGSCALL stub_clone, sys_clone, %r8 -@@ -747,9 +1044,10 @@ ENTRY(ptregscall_common) - movq_cfi_restore R12+8, r12 - movq_cfi_restore RBP+8, rbp - movq_cfi_restore RBX+8, rbx -+ pax_force_retaddr - ret $REST_SKIP /* pop extended registers */ - CFI_ENDPROC --END(ptregscall_common) -+ENDPROC(ptregscall_common) - - ENTRY(stub_execve) - CFI_STARTPROC -@@ -764,7 +1062,7 @@ ENTRY(stub_execve) - RESTORE_REST - jmp int_ret_from_sys_call - CFI_ENDPROC --END(stub_execve) -+ENDPROC(stub_execve) - - /* - * sigreturn is special because it needs to restore all registers on return. -@@ -782,7 +1080,7 @@ ENTRY(stub_rt_sigreturn) - RESTORE_REST - jmp int_ret_from_sys_call - CFI_ENDPROC --END(stub_rt_sigreturn) -+ENDPROC(stub_rt_sigreturn) - - #ifdef CONFIG_X86_X32_ABI - PTREGSCALL stub_x32_sigaltstack, sys32_sigaltstack, %rdx -@@ -851,7 +1149,7 @@ vector=vector+1 - 2: jmp common_interrupt - .endr - CFI_ENDPROC --END(irq_entries_start) -+ENDPROC(irq_entries_start) - - .previous - END(interrupt) -@@ -871,6 +1169,16 @@ END(interrupt) - subq $ORIG_RAX-RBP, %rsp - CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP - SAVE_ARGS_IRQ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rdi) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - call \func - .endm - -@@ -902,7 +1210,7 @@ ret_from_intr: - - exit_intr: - GET_THREAD_INFO(%rcx) -- testl $3,CS-ARGOFFSET(%rsp) -+ testb $3,CS-ARGOFFSET(%rsp) - je retint_kernel - - /* Interrupt came from user space */ -@@ -924,12 +1232,16 @@ retint_swapgs: /* return to user-space */ - * The iretq could re-enable interrupts: - */ - DISABLE_INTERRUPTS(CLBR_ANY) -+ pax_exit_kernel_user -+retint_swapgs_pax: - TRACE_IRQS_IRETQ - SWAPGS - jmp restore_args - - retint_restore_args: /* return to kernel space */ - DISABLE_INTERRUPTS(CLBR_ANY) -+ pax_exit_kernel -+ pax_force_retaddr (RIP-ARGOFFSET) - /* - * The iretq could re-enable interrupts: - */ -@@ -1012,7 +1324,7 @@ ENTRY(retint_kernel) - #endif - - CFI_ENDPROC --END(common_interrupt) -+ENDPROC(common_interrupt) - /* - * End of kprobes section - */ -@@ -1029,7 +1341,7 @@ ENTRY(\sym) - interrupt \do_sym - jmp ret_from_intr - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - - #ifdef CONFIG_SMP -@@ -1084,12 +1396,22 @@ ENTRY(\sym) - CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 - call error_entry - DEFAULT_FRAME 0 -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - movq %rsp,%rdi /* pt_regs pointer */ - xorl %esi,%esi /* no error code */ - call \do_sym - jmp error_exit /* %ebx: no swapgs flag */ - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - - .macro paranoidzeroentry sym do_sym -@@ -1101,15 +1423,25 @@ ENTRY(\sym) - CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 - call save_paranoid - TRACE_IRQS_OFF -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - movq %rsp,%rdi /* pt_regs pointer */ - xorl %esi,%esi /* no error code */ - call \do_sym - jmp paranoid_exit /* %ebx: no swapgs flag */ - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - --#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8) -+#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r12) - .macro paranoidzeroentry_ist sym do_sym ist - ENTRY(\sym) - INTR_FRAME -@@ -1119,14 +1451,30 @@ ENTRY(\sym) - CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 - call save_paranoid - TRACE_IRQS_OFF_DEBUG -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - movq %rsp,%rdi /* pt_regs pointer */ - xorl %esi,%esi /* no error code */ -+#ifdef CONFIG_SMP -+ imul $TSS_size, PER_CPU_VAR(cpu_number), %r12d -+ lea init_tss(%r12), %r12 -+#else -+ lea init_tss(%rip), %r12 -+#endif - subq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) - call \do_sym - addq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) - jmp paranoid_exit /* %ebx: no swapgs flag */ - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - - .macro errorentry sym do_sym -@@ -1137,13 +1485,23 @@ ENTRY(\sym) - CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 - call error_entry - DEFAULT_FRAME 0 -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - movq %rsp,%rdi /* pt_regs pointer */ - movq ORIG_RAX(%rsp),%rsi /* get error code */ - movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ - call \do_sym - jmp error_exit /* %ebx: no swapgs flag */ - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - - /* error code is on the stack already */ -@@ -1156,13 +1514,23 @@ ENTRY(\sym) - call save_paranoid - DEFAULT_FRAME 0 - TRACE_IRQS_OFF -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif - movq %rsp,%rdi /* pt_regs pointer */ - movq ORIG_RAX(%rsp),%rsi /* get error code */ - movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ - call \do_sym - jmp paranoid_exit /* %ebx: no swapgs flag */ - CFI_ENDPROC --END(\sym) -+ENDPROC(\sym) - .endm - - zeroentry divide_error do_divide_error -@@ -1192,9 +1560,10 @@ gs_change: - 2: mfence /* workaround */ - SWAPGS - popfq_cfi -+ pax_force_retaddr - ret - CFI_ENDPROC --END(native_load_gs_index) -+ENDPROC(native_load_gs_index) - - _ASM_EXTABLE(gs_change,bad_gs) - .section .fixup,"ax" -@@ -1213,13 +1582,14 @@ ENTRY(kernel_thread_helper) - * Here we are in the child and the registers are set as they were - * at kernel_thread() invocation in the parent. - */ -+ pax_force_fptr %rsi - call *%rsi - # exit - mov %eax, %edi - call do_exit - ud2 # padding for call trace - CFI_ENDPROC --END(kernel_thread_helper) -+ENDPROC(kernel_thread_helper) - - /* - * execve(). This function needs to use IRET, not SYSRET, to set up all state properly. -@@ -1246,11 +1616,11 @@ ENTRY(kernel_execve) - RESTORE_REST - testq %rax,%rax - je int_ret_from_sys_call -- RESTORE_ARGS - UNFAKE_STACK_FRAME -+ pax_force_retaddr - ret - CFI_ENDPROC --END(kernel_execve) -+ENDPROC(kernel_execve) - - /* Call softirq on interrupt stack. Interrupts are off. */ - ENTRY(call_softirq) -@@ -1268,9 +1638,10 @@ ENTRY(call_softirq) - CFI_DEF_CFA_REGISTER rsp - CFI_ADJUST_CFA_OFFSET -8 - decl PER_CPU_VAR(irq_count) -+ pax_force_retaddr - ret - CFI_ENDPROC --END(call_softirq) -+ENDPROC(call_softirq) - - #ifdef CONFIG_XEN - zeroentry xen_hypervisor_callback xen_do_hypervisor_callback -@@ -1308,7 +1679,7 @@ ENTRY(xen_do_hypervisor_callback) # do_hypervisor_callback(struct *pt_regs) - decl PER_CPU_VAR(irq_count) - jmp error_exit - CFI_ENDPROC --END(xen_do_hypervisor_callback) -+ENDPROC(xen_do_hypervisor_callback) - - /* - * Hypervisor uses this for application faults while it executes. -@@ -1367,7 +1738,7 @@ ENTRY(xen_failsafe_callback) - SAVE_ALL - jmp error_exit - CFI_ENDPROC --END(xen_failsafe_callback) -+ENDPROC(xen_failsafe_callback) - - apicinterrupt XEN_HVM_EVTCHN_CALLBACK \ - xen_hvm_callback_vector xen_evtchn_do_upcall -@@ -1416,16 +1787,31 @@ ENTRY(paranoid_exit) - TRACE_IRQS_OFF_DEBUG - testl %ebx,%ebx /* swapgs needed? */ - jnz paranoid_restore -- testl $3,CS(%rsp) -+ testb $3,CS(%rsp) - jnz paranoid_userspace -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pax_exit_kernel -+ TRACE_IRQS_IRETQ 0 -+ SWAPGS_UNSAFE_STACK -+ RESTORE_ALL 8 -+ pax_force_retaddr_bts -+ jmp irq_return -+#endif - paranoid_swapgs: -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pax_exit_kernel_user -+#else -+ pax_exit_kernel -+#endif - TRACE_IRQS_IRETQ 0 - SWAPGS_UNSAFE_STACK - RESTORE_ALL 8 - jmp irq_return - paranoid_restore: -+ pax_exit_kernel - TRACE_IRQS_IRETQ_DEBUG 0 - RESTORE_ALL 8 -+ pax_force_retaddr_bts - jmp irq_return - paranoid_userspace: - GET_THREAD_INFO(%rcx) -@@ -1454,7 +1840,7 @@ paranoid_schedule: - TRACE_IRQS_OFF - jmp paranoid_userspace - CFI_ENDPROC --END(paranoid_exit) -+ENDPROC(paranoid_exit) - - /* - * Exception entry point. This expects an error code/orig_rax on the stack. -@@ -1481,12 +1867,13 @@ ENTRY(error_entry) - movq_cfi r14, R14+8 - movq_cfi r15, R15+8 - xorl %ebx,%ebx -- testl $3,CS+8(%rsp) -+ testb $3,CS+8(%rsp) - je error_kernelspace - error_swapgs: - SWAPGS - error_sti: - TRACE_IRQS_OFF -+ pax_force_retaddr_bts - ret - - /* -@@ -1513,7 +1900,7 @@ bstep_iret: - movq %rcx,RIP+8(%rsp) - jmp error_swapgs - CFI_ENDPROC --END(error_entry) -+ENDPROC(error_entry) - - - /* ebx: no swapgs flag (1: don't need swapgs, 0: need it) */ -@@ -1533,7 +1920,7 @@ ENTRY(error_exit) - jnz retint_careful - jmp retint_swapgs - CFI_ENDPROC --END(error_exit) -+ENDPROC(error_exit) - - /* - * Test if a given stack is an NMI stack or not. -@@ -1591,9 +1978,11 @@ ENTRY(nmi) - * If %cs was not the kernel segment, then the NMI triggered in user - * space, which means it is definitely not nested. - */ -+ cmpl $__KERNEXEC_KERNEL_CS, 16(%rsp) -+ je 1f - cmpl $__KERNEL_CS, 16(%rsp) - jne first_nmi -- -+1: - /* - * Check the special variable on the stack to see if NMIs are - * executing. -@@ -1752,6 +2141,17 @@ end_repeat_nmi: - */ - movq %cr2, %r12 - -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ testb $3, CS(%rsp) -+ jnz 1f -+ pax_enter_kernel -+ jmp 2f -+1: pax_enter_kernel_user -+2: -+#else -+ pax_enter_kernel -+#endif -+ - /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ - movq %rsp,%rdi - movq $-1,%rsi -@@ -1767,21 +2167,32 @@ end_repeat_nmi: - testl %ebx,%ebx /* swapgs needed? */ - jnz nmi_restore - nmi_swapgs: -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pax_exit_kernel_user -+#else -+ pax_exit_kernel -+#endif - SWAPGS_UNSAFE_STACK -+ RESTORE_ALL 8 -+ /* Clear the NMI executing stack variable */ -+ movq $0, 10*8(%rsp) -+ jmp irq_return - nmi_restore: -+ pax_exit_kernel - RESTORE_ALL 8 -+ pax_force_retaddr_bts - /* Clear the NMI executing stack variable */ - movq $0, 10*8(%rsp) - jmp irq_return - CFI_ENDPROC --END(nmi) -+ENDPROC(nmi) - - ENTRY(ignore_sysret) - CFI_STARTPROC - mov $-ENOSYS,%eax - sysret - CFI_ENDPROC --END(ignore_sysret) -+ENDPROC(ignore_sysret) - - /* - * End of kprobes section -diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c -index c3a7cb4..55f78fc 100644 ---- a/arch/x86/kernel/ftrace.c -+++ b/arch/x86/kernel/ftrace.c -@@ -105,6 +105,8 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code, - { - unsigned char replaced[MCOUNT_INSN_SIZE]; - -+ ip = ktla_ktva(ip); -+ - /* - * Note: Due to modules and __init, code can - * disappear and change, we need to protect against faulting -@@ -212,7 +214,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func) - unsigned char old[MCOUNT_INSN_SIZE], *new; - int ret; - -- memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE); -+ memcpy(old, ktla_ktva((void *)ftrace_call), MCOUNT_INSN_SIZE); - new = ftrace_call_replace(ip, (unsigned long)func); - - /* See comment above by declaration of modifying_ftrace_code */ -@@ -256,7 +258,7 @@ static int ftrace_write(unsigned long ip, const char *val, int size) - * kernel identity mapping to modify code. - */ - if (within(ip, (unsigned long)_text, (unsigned long)_etext)) -- ip = (unsigned long)__va(__pa(ip)); -+ ip = (unsigned long)__va(__pa(ktla_ktva(ip))); - - return probe_kernel_write((void *)ip, val, size); - } -@@ -266,7 +268,7 @@ static int add_break(unsigned long ip, const char *old) - unsigned char replaced[MCOUNT_INSN_SIZE]; - unsigned char brk = BREAKPOINT_INSTRUCTION; - -- if (probe_kernel_read(replaced, (void *)ip, MCOUNT_INSN_SIZE)) -+ if (probe_kernel_read(replaced, (void *)ktla_ktva(ip), MCOUNT_INSN_SIZE)) - return -EFAULT; - - /* Make sure it is what we expect it to be */ -@@ -572,7 +574,7 @@ ftrace_modify_code(unsigned long ip, unsigned const char *old_code, - return ret; - - fail_update: -- probe_kernel_write((void *)ip, &old_code[0], 1); -+ probe_kernel_write((void *)ktla_ktva(ip), &old_code[0], 1); - goto out; - } - -@@ -605,6 +607,8 @@ static int ftrace_mod_jmp(unsigned long ip, - { - unsigned char code[MCOUNT_INSN_SIZE]; - -+ ip = ktla_ktva(ip); -+ - if (probe_kernel_read(code, (void *)ip, MCOUNT_INSN_SIZE)) - return -EFAULT; - -diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c -index c18f59d..9c0c9f6 100644 ---- a/arch/x86/kernel/head32.c -+++ b/arch/x86/kernel/head32.c -@@ -18,6 +18,7 @@ - #include - #include - #include -+#include - - static void __init i386_default_early_setup(void) - { -@@ -30,8 +31,7 @@ static void __init i386_default_early_setup(void) - - void __init i386_start_kernel(void) - { -- memblock_reserve(__pa_symbol(&_text), -- __pa_symbol(&__bss_stop) - __pa_symbol(&_text)); -+ memblock_reserve(LOAD_PHYSICAL_ADDR, __pa_symbol(&__bss_stop) - LOAD_PHYSICAL_ADDR); - - #ifdef CONFIG_BLK_DEV_INITRD - /* Reserve INITRD */ -diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S -index d42ab17..87b9555 100644 ---- a/arch/x86/kernel/head_32.S -+++ b/arch/x86/kernel/head_32.S -@@ -26,6 +26,12 @@ - /* Physical address */ - #define pa(X) ((X) - __PAGE_OFFSET) - -+#ifdef CONFIG_PAX_KERNEXEC -+#define ta(X) (X) -+#else -+#define ta(X) ((X) - __PAGE_OFFSET) -+#endif -+ - /* - * References to members of the new_cpu_data structure. - */ -@@ -55,11 +61,7 @@ - * and small than max_low_pfn, otherwise will waste some page table entries - */ - --#if PTRS_PER_PMD > 1 --#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD) --#else --#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD) --#endif -+#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE) - - /* Number of possible pages in the lowmem region */ - LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT) -@@ -78,6 +80,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE - RESERVE_BRK(pagetables, INIT_MAP_SIZE) - - /* -+ * Real beginning of normal "text" segment -+ */ -+ENTRY(stext) -+ENTRY(_stext) -+ -+/* - * 32-bit kernel entrypoint; only used by the boot CPU. On entry, - * %esi points to the real-mode code as a 32-bit pointer. - * CS and DS must be 4 GB flat segments, but we don't depend on -@@ -85,6 +93,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE) - * can. - */ - __HEAD -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ jmp startup_32 -+/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */ -+.fill PAGE_SIZE-5,1,0xcc -+#endif -+ - ENTRY(startup_32) - movl pa(stack_start),%ecx - -@@ -106,6 +121,59 @@ ENTRY(startup_32) - 2: - leal -__PAGE_OFFSET(%ecx),%esp - -+#ifdef CONFIG_SMP -+ movl $pa(cpu_gdt_table),%edi -+ movl $__per_cpu_load,%eax -+ movw %ax,GDT_ENTRY_PERCPU * 8 + 2(%edi) -+ rorl $16,%eax -+ movb %al,GDT_ENTRY_PERCPU * 8 + 4(%edi) -+ movb %ah,GDT_ENTRY_PERCPU * 8 + 7(%edi) -+ movl $__per_cpu_end - 1,%eax -+ subl $__per_cpu_start,%eax -+ movw %ax,GDT_ENTRY_PERCPU * 8 + 0(%edi) -+#endif -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ movl $NR_CPUS,%ecx -+ movl $pa(cpu_gdt_table),%edi -+1: -+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi) -+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi) -+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi) -+ addl $PAGE_SIZE_asm,%edi -+ loop 1b -+#endif -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ movl $pa(boot_gdt),%edi -+ movl $__LOAD_PHYSICAL_ADDR,%eax -+ movw %ax,GDT_ENTRY_BOOT_CS * 8 + 2(%edi) -+ rorl $16,%eax -+ movb %al,GDT_ENTRY_BOOT_CS * 8 + 4(%edi) -+ movb %ah,GDT_ENTRY_BOOT_CS * 8 + 7(%edi) -+ rorl $16,%eax -+ -+ ljmp $(__BOOT_CS),$1f -+1: -+ -+ movl $NR_CPUS,%ecx -+ movl $pa(cpu_gdt_table),%edi -+ addl $__PAGE_OFFSET,%eax -+1: -+ movb $0xc0,GDT_ENTRY_KERNEL_CS * 8 + 6(%edi) -+ movb $0xc0,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 6(%edi) -+ movw %ax,GDT_ENTRY_KERNEL_CS * 8 + 2(%edi) -+ movw %ax,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 2(%edi) -+ rorl $16,%eax -+ movb %al,GDT_ENTRY_KERNEL_CS * 8 + 4(%edi) -+ movb %al,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 4(%edi) -+ movb %ah,GDT_ENTRY_KERNEL_CS * 8 + 7(%edi) -+ movb %ah,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 7(%edi) -+ rorl $16,%eax -+ addl $PAGE_SIZE_asm,%edi -+ loop 1b -+#endif -+ - /* - * Clear BSS first so that there are no surprises... - */ -@@ -196,8 +264,11 @@ ENTRY(startup_32) - movl %eax, pa(max_pfn_mapped) - - /* Do early initialization of the fixmap area */ -- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax -- movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8) -+#ifdef CONFIG_COMPAT_VDSO -+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_pg_pmd+0x1000*KPMDS-8) -+#else -+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_pg_pmd+0x1000*KPMDS-8) -+#endif - #else /* Not PAE */ - - page_pde_offset = (__PAGE_OFFSET >> 20); -@@ -227,8 +298,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20); - movl %eax, pa(max_pfn_mapped) - - /* Do early initialization of the fixmap area */ -- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax -- movl %eax,pa(initial_page_table+0xffc) -+#ifdef CONFIG_COMPAT_VDSO -+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_page_table+0xffc) -+#else -+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_page_table+0xffc) -+#endif - #endif - - #ifdef CONFIG_PARAVIRT -@@ -242,9 +316,7 @@ page_pde_offset = (__PAGE_OFFSET >> 20); - cmpl $num_subarch_entries, %eax - jae bad_subarch - -- movl pa(subarch_entries)(,%eax,4), %eax -- subl $__PAGE_OFFSET, %eax -- jmp *%eax -+ jmp *pa(subarch_entries)(,%eax,4) - - bad_subarch: - WEAK(lguest_entry) -@@ -256,10 +328,10 @@ WEAK(xen_entry) - __INITDATA - - subarch_entries: -- .long default_entry /* normal x86/PC */ -- .long lguest_entry /* lguest hypervisor */ -- .long xen_entry /* Xen hypervisor */ -- .long default_entry /* Moorestown MID */ -+ .long ta(default_entry) /* normal x86/PC */ -+ .long ta(lguest_entry) /* lguest hypervisor */ -+ .long ta(xen_entry) /* Xen hypervisor */ -+ .long ta(default_entry) /* Moorestown MID */ - num_subarch_entries = (. - subarch_entries) / 4 - .previous - #else -@@ -310,6 +382,7 @@ default_entry: - orl %edx,%eax - movl %eax,%cr4 - -+#ifdef CONFIG_X86_PAE - testb $X86_CR4_PAE, %al # check if PAE is enabled - jz 6f - -@@ -338,6 +411,9 @@ default_entry: - /* Make changes effective */ - wrmsr - -+ btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4) -+#endif -+ - 6: - - /* -@@ -436,14 +512,20 @@ is386: movl $2,%ecx # set MP - 1: movl $(__KERNEL_DS),%eax # reload all the segment registers - movl %eax,%ss # after changing gdt. - -- movl $(__USER_DS),%eax # DS/ES contains default USER segment -+# movl $(__KERNEL_DS),%eax # DS/ES contains default KERNEL segment - movl %eax,%ds - movl %eax,%es - - movl $(__KERNEL_PERCPU), %eax - movl %eax,%fs # set this cpu's percpu - -+#ifdef CONFIG_CC_STACKPROTECTOR - movl $(__KERNEL_STACK_CANARY),%eax -+#elif defined(CONFIG_PAX_MEMORY_UDEREF) -+ movl $(__USER_DS),%eax -+#else -+ xorl %eax,%eax -+#endif - movl %eax,%gs - - xorl %eax,%eax # Clear LDT -@@ -520,8 +602,11 @@ setup_once: - * relocation. Manually set base address in stack canary - * segment descriptor. - */ -- movl $gdt_page,%eax -+ movl $cpu_gdt_table,%eax - movl $stack_canary,%ecx -+#ifdef CONFIG_SMP -+ addl $__per_cpu_load,%ecx -+#endif - movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax) - shrl $16, %ecx - movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax) -@@ -552,7 +637,7 @@ ENDPROC(early_idt_handlers) - /* This is global to keep gas from relaxing the jumps */ - ENTRY(early_idt_handler) - cld -- cmpl $2,%ss:early_recursion_flag -+ cmpl $1,%ss:early_recursion_flag - je hlt_loop - incl %ss:early_recursion_flag - -@@ -590,8 +675,8 @@ ENTRY(early_idt_handler) - pushl (20+6*4)(%esp) /* trapno */ - pushl $fault_msg - call printk --#endif - call dump_stack -+#endif - hlt_loop: - hlt - jmp hlt_loop -@@ -610,8 +695,11 @@ ENDPROC(early_idt_handler) - /* This is the default interrupt "handler" :-) */ - ALIGN - ignore_int: -- cld - #ifdef CONFIG_PRINTK -+ cmpl $2,%ss:early_recursion_flag -+ je hlt_loop -+ incl %ss:early_recursion_flag -+ cld - pushl %eax - pushl %ecx - pushl %edx -@@ -620,9 +708,6 @@ ignore_int: - movl $(__KERNEL_DS),%eax - movl %eax,%ds - movl %eax,%es -- cmpl $2,early_recursion_flag -- je hlt_loop -- incl early_recursion_flag - pushl 16(%esp) - pushl 24(%esp) - pushl 32(%esp) -@@ -656,29 +741,43 @@ ENTRY(setup_once_ref) - /* - * BSS section - */ --__PAGE_ALIGNED_BSS -- .align PAGE_SIZE - #ifdef CONFIG_X86_PAE -+.section .initial_pg_pmd,"a",@progbits - initial_pg_pmd: - .fill 1024*KPMDS,4,0 - #else -+.section .initial_page_table,"a",@progbits - ENTRY(initial_page_table) - .fill 1024,4,0 - #endif -+.section .initial_pg_fixmap,"a",@progbits - initial_pg_fixmap: - .fill 1024,4,0 -+.section .empty_zero_page,"a",@progbits - ENTRY(empty_zero_page) - .fill 4096,1,0 -+.section .swapper_pg_dir,"a",@progbits - ENTRY(swapper_pg_dir) -+#ifdef CONFIG_X86_PAE -+ .fill 4,8,0 -+#else - .fill 1024,4,0 -+#endif -+ -+/* -+ * The IDT has to be page-aligned to simplify the Pentium -+ * F0 0F bug workaround.. We have a special link segment -+ * for this. -+ */ -+.section .idt,"a",@progbits -+ENTRY(idt_table) -+ .fill 256,8,0 - - /* - * This starts the data section. - */ - #ifdef CONFIG_X86_PAE --__PAGE_ALIGNED_DATA -- /* Page-aligned for the benefit of paravirt? */ -- .align PAGE_SIZE -+.section .initial_page_table,"a",@progbits - ENTRY(initial_page_table) - .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ - # if KPMDS == 3 -@@ -697,12 +796,20 @@ ENTRY(initial_page_table) - # error "Kernel PMDs should be 1, 2 or 3" - # endif - .align PAGE_SIZE /* needs to be page-sized too */ -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ENTRY(cpu_pgd) -+ .rept NR_CPUS -+ .fill 4,8,0 -+ .endr -+#endif -+ - #endif - - .data - .balign 4 - ENTRY(stack_start) -- .long init_thread_union+THREAD_SIZE -+ .long init_thread_union+THREAD_SIZE-8 - - __INITRODATA - int_msg: -@@ -730,7 +837,7 @@ fault_msg: - * segment size, and 32-bit linear address value: - */ - -- .data -+.section .rodata,"a",@progbits - .globl boot_gdt_descr - .globl idt_descr - -@@ -739,7 +846,7 @@ fault_msg: - .word 0 # 32 bit align gdt_desc.address - boot_gdt_descr: - .word __BOOT_DS+7 -- .long boot_gdt - __PAGE_OFFSET -+ .long pa(boot_gdt) - - .word 0 # 32-bit align idt_desc.address - idt_descr: -@@ -750,7 +857,7 @@ idt_descr: - .word 0 # 32 bit align gdt_desc.address - ENTRY(early_gdt_descr) - .word GDT_ENTRIES*8-1 -- .long gdt_page /* Overwritten for secondary CPUs */ -+ .long cpu_gdt_table /* Overwritten for secondary CPUs */ - - /* - * The boot_gdt must mirror the equivalent in setup.S and is -@@ -759,5 +866,65 @@ ENTRY(early_gdt_descr) - .align L1_CACHE_BYTES - ENTRY(boot_gdt) - .fill GDT_ENTRY_BOOT_CS,8,0 -- .quad 0x00cf9a000000ffff /* kernel 4GB code at 0x00000000 */ -- .quad 0x00cf92000000ffff /* kernel 4GB data at 0x00000000 */ -+ .quad 0x00cf9b000000ffff /* kernel 4GB code at 0x00000000 */ -+ .quad 0x00cf93000000ffff /* kernel 4GB data at 0x00000000 */ -+ -+ .align PAGE_SIZE_asm -+ENTRY(cpu_gdt_table) -+ .rept NR_CPUS -+ .quad 0x0000000000000000 /* NULL descriptor */ -+ .quad 0x0000000000000000 /* 0x0b reserved */ -+ .quad 0x0000000000000000 /* 0x13 reserved */ -+ .quad 0x0000000000000000 /* 0x1b reserved */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ .quad 0x00cf9b000000ffff /* 0x20 alternate kernel 4GB code at 0x00000000 */ -+#else -+ .quad 0x0000000000000000 /* 0x20 unused */ -+#endif -+ -+ .quad 0x0000000000000000 /* 0x28 unused */ -+ .quad 0x0000000000000000 /* 0x33 TLS entry 1 */ -+ .quad 0x0000000000000000 /* 0x3b TLS entry 2 */ -+ .quad 0x0000000000000000 /* 0x43 TLS entry 3 */ -+ .quad 0x0000000000000000 /* 0x4b reserved */ -+ .quad 0x0000000000000000 /* 0x53 reserved */ -+ .quad 0x0000000000000000 /* 0x5b reserved */ -+ -+ .quad 0x00cf9b000000ffff /* 0x60 kernel 4GB code at 0x00000000 */ -+ .quad 0x00cf93000000ffff /* 0x68 kernel 4GB data at 0x00000000 */ -+ .quad 0x00cffb000000ffff /* 0x73 user 4GB code at 0x00000000 */ -+ .quad 0x00cff3000000ffff /* 0x7b user 4GB data at 0x00000000 */ -+ -+ .quad 0x0000000000000000 /* 0x80 TSS descriptor */ -+ .quad 0x0000000000000000 /* 0x88 LDT descriptor */ -+ -+ /* -+ * Segments used for calling PnP BIOS have byte granularity. -+ * The code segments and data segments have fixed 64k limits, -+ * the transfer segment sizes are set at run time. -+ */ -+ .quad 0x00409b000000ffff /* 0x90 32-bit code */ -+ .quad 0x00009b000000ffff /* 0x98 16-bit code */ -+ .quad 0x000093000000ffff /* 0xa0 16-bit data */ -+ .quad 0x0000930000000000 /* 0xa8 16-bit data */ -+ .quad 0x0000930000000000 /* 0xb0 16-bit data */ -+ -+ /* -+ * The APM segments have byte granularity and their bases -+ * are set at run time. All have 64k limits. -+ */ -+ .quad 0x00409b000000ffff /* 0xb8 APM CS code */ -+ .quad 0x00009b000000ffff /* 0xc0 APM CS 16 code (16 bit) */ -+ .quad 0x004093000000ffff /* 0xc8 APM DS data */ -+ -+ .quad 0x00c0930000000000 /* 0xd0 - ESPFIX SS */ -+ .quad 0x0040930000000000 /* 0xd8 - PERCPU */ -+ .quad 0x0040910000000017 /* 0xe0 - STACK_CANARY */ -+ .quad 0x0000000000000000 /* 0xe8 - PCIBIOS_CS */ -+ .quad 0x0000000000000000 /* 0xf0 - PCIBIOS_DS */ -+ .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */ -+ -+ /* Be sure this is zeroed to avoid false validations in Xen */ -+ .fill PAGE_SIZE_asm - GDT_SIZE,1,0 -+ .endr -diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S -index 94bf9cc..400455a 100644 ---- a/arch/x86/kernel/head_64.S -+++ b/arch/x86/kernel/head_64.S -@@ -20,6 +20,8 @@ - #include - #include - #include -+#include -+#include - - #ifdef CONFIG_PARAVIRT - #include -@@ -41,6 +43,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET) - L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET) - L4_START_KERNEL = pgd_index(__START_KERNEL_map) - L3_START_KERNEL = pud_index(__START_KERNEL_map) -+L4_VMALLOC_START = pgd_index(VMALLOC_START) -+L3_VMALLOC_START = pud_index(VMALLOC_START) -+L4_VMALLOC_END = pgd_index(VMALLOC_END) -+L3_VMALLOC_END = pud_index(VMALLOC_END) -+L4_VMEMMAP_START = pgd_index(VMEMMAP_START) -+L3_VMEMMAP_START = pud_index(VMEMMAP_START) - - .text - __HEAD -@@ -88,35 +96,23 @@ startup_64: - */ - addq %rbp, init_level4_pgt + 0(%rip) - addq %rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip) -+ addq %rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip) -+ addq %rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip) -+ addq %rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip) - addq %rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip) - - addq %rbp, level3_ident_pgt + 0(%rip) -+#ifndef CONFIG_XEN -+ addq %rbp, level3_ident_pgt + 8(%rip) -+#endif - -- addq %rbp, level3_kernel_pgt + (510*8)(%rip) -- addq %rbp, level3_kernel_pgt + (511*8)(%rip) -- -- addq %rbp, level2_fixmap_pgt + (506*8)(%rip) -- -- /* Add an Identity mapping if I am above 1G */ -- leaq _text(%rip), %rdi -- andq $PMD_PAGE_MASK, %rdi -- -- movq %rdi, %rax -- shrq $PUD_SHIFT, %rax -- andq $(PTRS_PER_PUD - 1), %rax -- jz ident_complete -+ addq %rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip) - -- leaq (level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx -- leaq level3_ident_pgt(%rip), %rbx -- movq %rdx, 0(%rbx, %rax, 8) -+ addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip) -+ addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8+8)(%rip) - -- movq %rdi, %rax -- shrq $PMD_SHIFT, %rax -- andq $(PTRS_PER_PMD - 1), %rax -- leaq __PAGE_KERNEL_IDENT_LARGE_EXEC(%rdi), %rdx -- leaq level2_spare_pgt(%rip), %rbx -- movq %rdx, 0(%rbx, %rax, 8) --ident_complete: -+ addq %rbp, level2_fixmap_pgt + (506*8)(%rip) -+ addq %rbp, level2_fixmap_pgt + (507*8)(%rip) - - /* - * Fixup the kernel text+data virtual addresses. Note that -@@ -159,8 +155,8 @@ ENTRY(secondary_startup_64) - * after the boot processor executes this code. - */ - -- /* Enable PAE mode and PGE */ -- movl $(X86_CR4_PAE | X86_CR4_PGE), %eax -+ /* Enable PAE mode and PSE/PGE */ -+ movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax - movq %rax, %cr4 - - /* Setup early boot stage 4 level pagetables. */ -@@ -182,9 +178,17 @@ ENTRY(secondary_startup_64) - movl $MSR_EFER, %ecx - rdmsr - btsl $_EFER_SCE, %eax /* Enable System Call */ -- btl $20,%edi /* No Execute supported? */ -+ btl $(X86_FEATURE_NX & 31),%edi /* No Execute supported? */ - jnc 1f - btsl $_EFER_NX, %eax -+ leaq init_level4_pgt(%rip), %rdi -+#ifndef CONFIG_EFI -+ btsq $_PAGE_BIT_NX, 8*L4_PAGE_OFFSET(%rdi) -+#endif -+ btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_START(%rdi) -+ btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_END(%rdi) -+ btsq $_PAGE_BIT_NX, 8*L4_VMEMMAP_START(%rdi) -+ btsq $_PAGE_BIT_NX, __supported_pte_mask(%rip) - 1: wrmsr /* Make changes effective */ - - /* Setup cr0 */ -@@ -246,6 +250,7 @@ ENTRY(secondary_startup_64) - * jump. In addition we need to ensure %cs is set so we make this - * a far return. - */ -+ pax_set_fptr_mask - movq initial_code(%rip),%rax - pushq $0 # fake return address to stop unwinder - pushq $__KERNEL_CS # set correct cs -@@ -268,7 +273,7 @@ ENTRY(secondary_startup_64) - bad_address: - jmp bad_address - -- .section ".init.text","ax" -+ __INIT - .globl early_idt_handlers - early_idt_handlers: - # 104(%rsp) %rflags -@@ -347,11 +352,15 @@ ENTRY(early_idt_handler) - addq $16,%rsp # drop vector number and error code - decl early_recursion_flag(%rip) - INTERRUPT_RETURN -+ .previous - -+ __INITDATA - .balign 4 - early_recursion_flag: - .long 0 -+ .previous - -+ .section .rodata,"a",@progbits - #ifdef CONFIG_EARLY_PRINTK - early_idt_msg: - .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n" -@@ -360,6 +369,7 @@ early_idt_ripmsg: - #endif /* CONFIG_EARLY_PRINTK */ - .previous - -+ .section .rodata,"a",@progbits - #define NEXT_PAGE(name) \ - .balign PAGE_SIZE; \ - ENTRY(name) -@@ -372,7 +382,6 @@ ENTRY(name) - i = i + 1 ; \ - .endr - -- .data - /* - * This default setting generates an ident mapping at address 0x100000 - * and a mapping for the kernel that precisely maps virtual address -@@ -383,13 +392,41 @@ NEXT_PAGE(init_level4_pgt) - .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE - .org init_level4_pgt + L4_PAGE_OFFSET*8, 0 - .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE -+ .org init_level4_pgt + L4_VMALLOC_START*8, 0 -+ .quad level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE -+ .org init_level4_pgt + L4_VMALLOC_END*8, 0 -+ .quad level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE -+ .org init_level4_pgt + L4_VMEMMAP_START*8, 0 -+ .quad level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE - .org init_level4_pgt + L4_START_KERNEL*8, 0 - /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ - .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+NEXT_PAGE(cpu_pgd) -+ .rept NR_CPUS -+ .fill 512,8,0 -+ .endr -+#endif -+ - NEXT_PAGE(level3_ident_pgt) - .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE -+#ifdef CONFIG_XEN - .fill 511,8,0 -+#else -+ .quad level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE -+ .fill 510,8,0 -+#endif -+ -+NEXT_PAGE(level3_vmalloc_start_pgt) -+ .fill 512,8,0 -+ -+NEXT_PAGE(level3_vmalloc_end_pgt) -+ .fill 512,8,0 -+ -+NEXT_PAGE(level3_vmemmap_pgt) -+ .fill L3_VMEMMAP_START,8,0 -+ .quad level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE - - NEXT_PAGE(level3_kernel_pgt) - .fill L3_START_KERNEL,8,0 -@@ -397,20 +434,23 @@ NEXT_PAGE(level3_kernel_pgt) - .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE - .quad level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE - -+NEXT_PAGE(level2_vmemmap_pgt) -+ .fill 512,8,0 -+ - NEXT_PAGE(level2_fixmap_pgt) -- .fill 506,8,0 -- .quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE -- /* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */ -- .fill 5,8,0 -+ .fill 507,8,0 -+ .quad level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE -+ /* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */ -+ .fill 4,8,0 - --NEXT_PAGE(level1_fixmap_pgt) -+NEXT_PAGE(level1_vsyscall_pgt) - .fill 512,8,0 - --NEXT_PAGE(level2_ident_pgt) -- /* Since I easily can, map the first 1G. -+ /* Since I easily can, map the first 2G. - * Don't set NX because code runs from these pages. - */ -- PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD) -+NEXT_PAGE(level2_ident_pgt) -+ PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD) - - NEXT_PAGE(level2_kernel_pgt) - /* -@@ -423,37 +463,59 @@ NEXT_PAGE(level2_kernel_pgt) - * If you want to increase this then increase MODULES_VADDR - * too.) - */ -- PMDS(0, __PAGE_KERNEL_LARGE_EXEC, -- KERNEL_IMAGE_SIZE/PMD_SIZE) -- --NEXT_PAGE(level2_spare_pgt) -- .fill 512, 8, 0 -+ PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE/PMD_SIZE) - - #undef PMDS - #undef NEXT_PAGE - -- .data -+ .align PAGE_SIZE -+ENTRY(cpu_gdt_table) -+ .rept NR_CPUS -+ .quad 0x0000000000000000 /* NULL descriptor */ -+ .quad 0x00cf9b000000ffff /* __KERNEL32_CS */ -+ .quad 0x00af9b000000ffff /* __KERNEL_CS */ -+ .quad 0x00cf93000000ffff /* __KERNEL_DS */ -+ .quad 0x00cffb000000ffff /* __USER32_CS */ -+ .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */ -+ .quad 0x00affb000000ffff /* __USER_CS */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ .quad 0x00af9b000000ffff /* __KERNEXEC_KERNEL_CS */ -+#else -+ .quad 0x0 /* unused */ -+#endif -+ -+ .quad 0,0 /* TSS */ -+ .quad 0,0 /* LDT */ -+ .quad 0,0,0 /* three TLS descriptors */ -+ .quad 0x0000f40000000000 /* node/CPU stored in limit */ -+ /* asm/segment.h:GDT_ENTRIES must match this */ -+ -+ /* zero the remaining page */ -+ .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0 -+ .endr -+ - .align 16 - .globl early_gdt_descr - early_gdt_descr: - .word GDT_ENTRIES*8-1 - early_gdt_descr_base: -- .quad INIT_PER_CPU_VAR(gdt_page) -+ .quad cpu_gdt_table - - ENTRY(phys_base) - /* This must match the first entry in level2_kernel_pgt */ - .quad 0x0000000000000000 - - #include "../../x86/xen/xen-head.S" -- -- .section .bss, "aw", @nobits -+ -+ .section .rodata,"a",@progbits - .align L1_CACHE_BYTES - ENTRY(idt_table) -- .skip IDT_ENTRIES * 16 -+ .fill 512,8,0 - - .align L1_CACHE_BYTES - ENTRY(nmi_idt_table) -- .skip IDT_ENTRIES * 16 -+ .fill 512,8,0 - - __PAGE_ALIGNED_BSS - .align PAGE_SIZE -diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c -index 9c3bd4a..e1d9b35 100644 ---- a/arch/x86/kernel/i386_ksyms_32.c -+++ b/arch/x86/kernel/i386_ksyms_32.c -@@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void); - EXPORT_SYMBOL(cmpxchg8b_emu); - #endif - -+EXPORT_SYMBOL_GPL(cpu_gdt_table); -+ - /* Networking helper routines. */ - EXPORT_SYMBOL(csum_partial_copy_generic); -+EXPORT_SYMBOL(csum_partial_copy_generic_to_user); -+EXPORT_SYMBOL(csum_partial_copy_generic_from_user); - - EXPORT_SYMBOL(__get_user_1); - EXPORT_SYMBOL(__get_user_2); -@@ -36,3 +40,7 @@ EXPORT_SYMBOL(strstr); - - EXPORT_SYMBOL(csum_partial); - EXPORT_SYMBOL(empty_zero_page); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR); -+#endif -diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c -index f250431..54097e7 100644 ---- a/arch/x86/kernel/i387.c -+++ b/arch/x86/kernel/i387.c -@@ -59,7 +59,7 @@ static inline bool interrupted_kernel_fpu_idle(void) - static inline bool interrupted_user_mode(void) - { - struct pt_regs *regs = get_irq_regs(); -- return regs && user_mode_vm(regs); -+ return regs && user_mode(regs); - } - - /* -diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c -index 36d1853..bf25736 100644 ---- a/arch/x86/kernel/i8259.c -+++ b/arch/x86/kernel/i8259.c -@@ -209,7 +209,7 @@ spurious_8259A_irq: - "spurious 8259A interrupt: IRQ%d.\n", irq); - spurious_irq_mask |= irqmask; - } -- atomic_inc(&irq_err_count); -+ atomic_inc_unchecked(&irq_err_count); - /* - * Theoretically we do not have to handle this IRQ, - * but in Linux this does not cause problems and is -diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c -index 8c96897..be66bfa 100644 ---- a/arch/x86/kernel/ioport.c -+++ b/arch/x86/kernel/ioport.c -@@ -6,6 +6,7 @@ - #include - #include - #include -+#include - #include - #include - #include -@@ -28,6 +29,12 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) - - if ((from + num <= from) || (from + num > IO_BITMAP_BITS)) - return -EINVAL; -+#ifdef CONFIG_GRKERNSEC_IO -+ if (turn_on && grsec_disable_privio) { -+ gr_handle_ioperm(); -+ return -EPERM; -+ } -+#endif - if (turn_on && !capable(CAP_SYS_RAWIO)) - return -EPERM; - -@@ -54,7 +61,7 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) - * because the ->io_bitmap_max value must match the bitmap - * contents: - */ -- tss = &per_cpu(init_tss, get_cpu()); -+ tss = init_tss + get_cpu(); - - if (turn_on) - bitmap_clear(t->io_bitmap_ptr, from, num); -@@ -102,6 +109,12 @@ long sys_iopl(unsigned int level, struct pt_regs *regs) - return -EINVAL; - /* Trying to gain more privileges? */ - if (level > old) { -+#ifdef CONFIG_GRKERNSEC_IO -+ if (grsec_disable_privio) { -+ gr_handle_iopl(); -+ return -EPERM; -+ } -+#endif - if (!capable(CAP_SYS_RAWIO)) - return -EPERM; - } -diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c -index d44f782..31ab01e 100644 ---- a/arch/x86/kernel/irq.c -+++ b/arch/x86/kernel/irq.c -@@ -18,7 +18,7 @@ - #include - #include - --atomic_t irq_err_count; -+atomic_unchecked_t irq_err_count; - - /* Function pointer for generic interrupt vector handling */ - void (*x86_platform_ipi_callback)(void) = NULL; -@@ -121,9 +121,9 @@ int arch_show_interrupts(struct seq_file *p, int prec) - seq_printf(p, "%10u ", per_cpu(mce_poll_count, j)); - seq_printf(p, " Machine check polls\n"); - #endif -- seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count)); -+ seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count)); - #if defined(CONFIG_X86_IO_APIC) -- seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count)); -+ seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count)); - #endif - return 0; - } -@@ -164,10 +164,10 @@ u64 arch_irq_stat_cpu(unsigned int cpu) - - u64 arch_irq_stat(void) - { -- u64 sum = atomic_read(&irq_err_count); -+ u64 sum = atomic_read_unchecked(&irq_err_count); - - #ifdef CONFIG_X86_IO_APIC -- sum += atomic_read(&irq_mis_count); -+ sum += atomic_read_unchecked(&irq_mis_count); - #endif - return sum; - } -diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c -index 344faf8..355f60d 100644 ---- a/arch/x86/kernel/irq_32.c -+++ b/arch/x86/kernel/irq_32.c -@@ -39,7 +39,7 @@ static int check_stack_overflow(void) - __asm__ __volatile__("andl %%esp,%0" : - "=r" (sp) : "0" (THREAD_SIZE - 1)); - -- return sp < (sizeof(struct thread_info) + STACK_WARN); -+ return sp < STACK_WARN; - } - - static void print_stack_overflow(void) -@@ -59,8 +59,8 @@ static inline void print_stack_overflow(void) { } - * per-CPU IRQ handling contexts (thread information and stack) - */ - union irq_ctx { -- struct thread_info tinfo; -- u32 stack[THREAD_SIZE/sizeof(u32)]; -+ unsigned long previous_esp; -+ u32 stack[THREAD_SIZE/sizeof(u32)]; - } __attribute__((aligned(THREAD_SIZE))); - - static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx); -@@ -80,10 +80,9 @@ static void call_on_stack(void *func, void *stack) - static inline int - execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) - { -- union irq_ctx *curctx, *irqctx; -+ union irq_ctx *irqctx; - u32 *isp, arg1, arg2; - -- curctx = (union irq_ctx *) current_thread_info(); - irqctx = __this_cpu_read(hardirq_ctx); - - /* -@@ -92,16 +91,16 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) - * handler) we can't do that and just have to keep using the - * current stack (which is the irq stack already after all) - */ -- if (unlikely(curctx == irqctx)) -+ if (unlikely((void *)current_stack_pointer - (void *)irqctx < THREAD_SIZE)) - return 0; - - /* build the stack frame on the IRQ stack */ -- isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); -- irqctx->tinfo.task = curctx->tinfo.task; -- irqctx->tinfo.previous_esp = current_stack_pointer; -+ isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); -+ irqctx->previous_esp = current_stack_pointer; - -- /* Copy the preempt_count so that the [soft]irq checks work. */ -- irqctx->tinfo.preempt_count = curctx->tinfo.preempt_count; -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(MAKE_MM_SEG(0)); -+#endif - - if (unlikely(overflow)) - call_on_stack(print_stack_overflow, isp); -@@ -113,6 +112,11 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) - : "0" (irq), "1" (desc), "2" (isp), - "D" (desc->handle_irq) - : "memory", "cc", "ecx"); -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(current_thread_info()->addr_limit); -+#endif -+ - return 1; - } - -@@ -121,29 +125,14 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) - */ - void __cpuinit irq_ctx_init(int cpu) - { -- union irq_ctx *irqctx; -- - if (per_cpu(hardirq_ctx, cpu)) - return; - -- irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), -- THREADINFO_GFP, -- THREAD_SIZE_ORDER)); -- memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); -- irqctx->tinfo.cpu = cpu; -- irqctx->tinfo.preempt_count = HARDIRQ_OFFSET; -- irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); -- -- per_cpu(hardirq_ctx, cpu) = irqctx; -- -- irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), -- THREADINFO_GFP, -- THREAD_SIZE_ORDER)); -- memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); -- irqctx->tinfo.cpu = cpu; -- irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); -- -- per_cpu(softirq_ctx, cpu) = irqctx; -+ per_cpu(hardirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER)); -+ per_cpu(softirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER)); -+ -+ printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n", -+ cpu, per_cpu(hardirq_ctx, cpu), per_cpu(softirq_ctx, cpu)); - - printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n", - cpu, per_cpu(hardirq_ctx, cpu), per_cpu(softirq_ctx, cpu)); -@@ -152,7 +141,6 @@ void __cpuinit irq_ctx_init(int cpu) - asmlinkage void do_softirq(void) - { - unsigned long flags; -- struct thread_info *curctx; - union irq_ctx *irqctx; - u32 *isp; - -@@ -162,15 +150,22 @@ asmlinkage void do_softirq(void) - local_irq_save(flags); - - if (local_softirq_pending()) { -- curctx = current_thread_info(); - irqctx = __this_cpu_read(softirq_ctx); -- irqctx->tinfo.task = curctx->task; -- irqctx->tinfo.previous_esp = current_stack_pointer; -+ irqctx->previous_esp = current_stack_pointer; - - /* build the stack frame on the softirq stack */ -- isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); -+ isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(MAKE_MM_SEG(0)); -+#endif - - call_on_stack(__do_softirq, isp); -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(current_thread_info()->addr_limit); -+#endif -+ - /* - * Shouldn't happen, we returned above if in_interrupt(): - */ -@@ -191,7 +186,7 @@ bool handle_irq(unsigned irq, struct pt_regs *regs) - if (unlikely(!desc)) - return false; - -- if (user_mode_vm(regs) || !execute_on_irq_stack(overflow, desc, irq)) { -+ if (user_mode(regs) || !execute_on_irq_stack(overflow, desc, irq)) { - if (unlikely(overflow)) - print_stack_overflow(); - desc->handle_irq(irq, desc); -diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c -index d04d3ec..ea4b374 100644 ---- a/arch/x86/kernel/irq_64.c -+++ b/arch/x86/kernel/irq_64.c -@@ -44,7 +44,7 @@ static inline void stack_overflow_check(struct pt_regs *regs) - u64 estack_top, estack_bottom; - u64 curbase = (u64)task_stack_page(current); - -- if (user_mode_vm(regs)) -+ if (user_mode(regs)) - return; - - if (regs->sp >= curbase + sizeof(struct thread_info) + -diff --git a/arch/x86/kernel/kdebugfs.c b/arch/x86/kernel/kdebugfs.c -index dc1404b..bbc43e7 100644 ---- a/arch/x86/kernel/kdebugfs.c -+++ b/arch/x86/kernel/kdebugfs.c -@@ -27,7 +27,7 @@ struct setup_data_node { - u32 len; - }; - --static ssize_t setup_data_read(struct file *file, char __user *user_buf, -+static ssize_t __size_overflow(3) setup_data_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) - { - struct setup_data_node *node = file->private_data; -diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c -index 3f61904..d26ea52 100644 ---- a/arch/x86/kernel/kgdb.c -+++ b/arch/x86/kernel/kgdb.c -@@ -127,11 +127,11 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs) - #ifdef CONFIG_X86_32 - switch (regno) { - case GDB_SS: -- if (!user_mode_vm(regs)) -+ if (!user_mode(regs)) - *(unsigned long *)mem = __KERNEL_DS; - break; - case GDB_SP: -- if (!user_mode_vm(regs)) -+ if (!user_mode(regs)) - *(unsigned long *)mem = kernel_stack_pointer(regs); - break; - case GDB_GS: -@@ -229,7 +229,10 @@ static void kgdb_correct_hw_break(void) - bp->attr.bp_addr = breakinfo[breakno].addr; - bp->attr.bp_len = breakinfo[breakno].len; - bp->attr.bp_type = breakinfo[breakno].type; -- info->address = breakinfo[breakno].addr; -+ if (breakinfo[breakno].type == X86_BREAKPOINT_EXECUTE) -+ info->address = ktla_ktva(breakinfo[breakno].addr); -+ else -+ info->address = breakinfo[breakno].addr; - info->len = breakinfo[breakno].len; - info->type = breakinfo[breakno].type; - val = arch_install_hw_breakpoint(bp); -@@ -476,12 +479,12 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, - case 'k': - /* clear the trace bit */ - linux_regs->flags &= ~X86_EFLAGS_TF; -- atomic_set(&kgdb_cpu_doing_single_step, -1); -+ atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1); - - /* set the trace bit if we're stepping */ - if (remcomInBuffer[0] == 's') { - linux_regs->flags |= X86_EFLAGS_TF; -- atomic_set(&kgdb_cpu_doing_single_step, -+ atomic_set_unchecked(&kgdb_cpu_doing_single_step, - raw_smp_processor_id()); - } - -@@ -546,7 +549,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd) - - switch (cmd) { - case DIE_DEBUG: -- if (atomic_read(&kgdb_cpu_doing_single_step) != -1) { -+ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) { - if (user_mode(regs)) - return single_step_cont(regs, args); - break; -@@ -749,11 +752,11 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt) - char opc[BREAK_INSTR_SIZE]; - - bpt->type = BP_BREAKPOINT; -- err = probe_kernel_read(bpt->saved_instr, (char *)bpt->bpt_addr, -+ err = probe_kernel_read(bpt->saved_instr, ktla_ktva((char *)bpt->bpt_addr), - BREAK_INSTR_SIZE); - if (err) - return err; -- err = probe_kernel_write((char *)bpt->bpt_addr, -+ err = probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr), - arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE); - #ifdef CONFIG_DEBUG_RODATA - if (!err) -@@ -766,7 +769,7 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt) - return -EBUSY; - text_poke((void *)bpt->bpt_addr, arch_kgdb_ops.gdb_bpt_instr, - BREAK_INSTR_SIZE); -- err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE); -+ err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE); - if (err) - return err; - if (memcmp(opc, arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE)) -@@ -791,13 +794,13 @@ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt) - if (mutex_is_locked(&text_mutex)) - goto knl_write; - text_poke((void *)bpt->bpt_addr, bpt->saved_instr, BREAK_INSTR_SIZE); -- err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE); -+ err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE); - if (err || memcmp(opc, bpt->saved_instr, BREAK_INSTR_SIZE)) - goto knl_write; - return err; - knl_write: - #endif /* CONFIG_DEBUG_RODATA */ -- return probe_kernel_write((char *)bpt->bpt_addr, -+ return probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr), - (char *)bpt->saved_instr, BREAK_INSTR_SIZE); - } - -diff --git a/arch/x86/kernel/kprobes-opt.c b/arch/x86/kernel/kprobes-opt.c -index c5e410e..ed5a7f0 100644 ---- a/arch/x86/kernel/kprobes-opt.c -+++ b/arch/x86/kernel/kprobes-opt.c -@@ -338,7 +338,7 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op) - * Verify if the address gap is in 2GB range, because this uses - * a relative jump. - */ -- rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE; -+ rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE; - if (abs(rel) > 0x7fffffff) - return -ERANGE; - -@@ -353,16 +353,16 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op) - op->optinsn.size = ret; - - /* Copy arch-dep-instance from template */ -- memcpy(buf, &optprobe_template_entry, TMPL_END_IDX); -+ memcpy(buf, ktla_ktva(&optprobe_template_entry), TMPL_END_IDX); - - /* Set probe information */ - synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op); - - /* Set probe function call */ -- synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback); -+ synthesize_relcall(ktva_ktla(buf) + TMPL_CALL_IDX, optimized_callback); - - /* Set returning jmp instruction at the tail of out-of-line buffer */ -- synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size, -+ synthesize_reljump(ktva_ktla(buf) + TMPL_END_IDX + op->optinsn.size, - (u8 *)op->kp.addr + op->optinsn.size); - - flush_icache_range((unsigned long) buf, -@@ -385,7 +385,7 @@ static void __kprobes setup_optimize_kprobe(struct text_poke_param *tprm, - ((long)op->kp.addr + RELATIVEJUMP_SIZE)); - - /* Backup instructions which will be replaced by jump address */ -- memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE, -+ memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE, - RELATIVE_ADDR_SIZE); - - insn_buf[0] = RELATIVEJUMP_OPCODE; -@@ -483,7 +483,7 @@ setup_detour_execution(struct kprobe *p, struct pt_regs *regs, int reenter) - /* This kprobe is really able to run optimized path. */ - op = container_of(p, struct optimized_kprobe, kp); - /* Detour through copied instructions */ -- regs->ip = (unsigned long)op->optinsn.insn + TMPL_END_IDX; -+ regs->ip = ktva_ktla((unsigned long)op->optinsn.insn) + TMPL_END_IDX; - if (!reenter) - reset_current_kprobe(); - preempt_enable_no_resched(); -diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c -index e2f751e..5aac82f 100644 ---- a/arch/x86/kernel/kprobes.c -+++ b/arch/x86/kernel/kprobes.c -@@ -119,9 +119,12 @@ static void __kprobes __synthesize_relative_insn(void *from, void *to, u8 op) - s32 raddr; - } __attribute__((packed)) *insn; - -- insn = (struct __arch_relative_insn *)from; -+ insn = (struct __arch_relative_insn *)ktla_ktva(from); -+ -+ pax_open_kernel(); - insn->raddr = (s32)((long)(to) - ((long)(from) + 5)); - insn->op = op; -+ pax_close_kernel(); - } - - /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/ -@@ -164,7 +167,7 @@ int __kprobes can_boost(kprobe_opcode_t *opcodes) - kprobe_opcode_t opcode; - kprobe_opcode_t *orig_opcodes = opcodes; - -- if (search_exception_tables((unsigned long)opcodes)) -+ if (search_exception_tables(ktva_ktla((unsigned long)opcodes))) - return 0; /* Page fault may occur on this address. */ - - retry: -@@ -238,9 +241,9 @@ __recover_probed_insn(kprobe_opcode_t *buf, unsigned long addr) - * for the first byte, we can recover the original instruction - * from it and kp->opcode. - */ -- memcpy(buf, kp->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); -+ memcpy(buf, ktla_ktva(kp->addr), MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); - buf[0] = kp->opcode; -- return (unsigned long)buf; -+ return ktva_ktla((unsigned long)buf); - } - - /* -@@ -332,7 +335,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src) - /* Another subsystem puts a breakpoint, failed to recover */ - if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION) - return 0; -+ pax_open_kernel(); - memcpy(dest, insn.kaddr, insn.length); -+ pax_close_kernel(); - - #ifdef CONFIG_X86_64 - if (insn_rip_relative(&insn)) { -@@ -355,7 +360,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src) - newdisp = (u8 *) src + (s64) insn.displacement.value - (u8 *) dest; - BUG_ON((s64) (s32) newdisp != newdisp); /* Sanity check. */ - disp = (u8 *) dest + insn_offset_displacement(&insn); -+ pax_open_kernel(); - *(s32 *) disp = (s32) newdisp; -+ pax_close_kernel(); - } - #endif - return insn.length; -@@ -485,7 +492,7 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k - * nor set current_kprobe, because it doesn't use single - * stepping. - */ -- regs->ip = (unsigned long)p->ainsn.insn; -+ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); - preempt_enable_no_resched(); - return; - } -@@ -502,9 +509,9 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k - regs->flags &= ~X86_EFLAGS_IF; - /* single step inline if the instruction is an int3 */ - if (p->opcode == BREAKPOINT_INSTRUCTION) -- regs->ip = (unsigned long)p->addr; -+ regs->ip = ktla_ktva((unsigned long)p->addr); - else -- regs->ip = (unsigned long)p->ainsn.insn; -+ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); - } - - /* -@@ -583,7 +590,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) - setup_singlestep(p, regs, kcb, 0); - return 1; - } -- } else if (*addr != BREAKPOINT_INSTRUCTION) { -+ } else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) { - /* - * The breakpoint instruction was removed right - * after we hit it. Another cpu has removed -@@ -628,6 +635,9 @@ static void __used __kprobes kretprobe_trampoline_holder(void) - " movq %rax, 152(%rsp)\n" - RESTORE_REGS_STRING - " popfq\n" -+#ifdef KERNEXEC_PLUGIN -+ " btsq $63,(%rsp)\n" -+#endif - #else - " pushf\n" - SAVE_REGS_STRING -@@ -765,7 +775,7 @@ static void __kprobes - resume_execution(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb) - { - unsigned long *tos = stack_addr(regs); -- unsigned long copy_ip = (unsigned long)p->ainsn.insn; -+ unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn); - unsigned long orig_ip = (unsigned long)p->addr; - kprobe_opcode_t *insn = p->ainsn.insn; - -@@ -947,7 +957,7 @@ kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *d - struct die_args *args = data; - int ret = NOTIFY_DONE; - -- if (args->regs && user_mode_vm(args->regs)) -+ if (args->regs && user_mode(args->regs)) - return ret; - - switch (val) { -diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c -index ebc9873..1b9724b 100644 ---- a/arch/x86/kernel/ldt.c -+++ b/arch/x86/kernel/ldt.c -@@ -66,13 +66,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) - if (reload) { - #ifdef CONFIG_SMP - preempt_disable(); -- load_LDT(pc); -+ load_LDT_nolock(pc); - if (!cpumask_equal(mm_cpumask(current->mm), - cpumask_of(smp_processor_id()))) - smp_call_function(flush_ldt, current->mm, 1); - preempt_enable(); - #else -- load_LDT(pc); -+ load_LDT_nolock(pc); - #endif - } - if (oldsize) { -@@ -94,7 +94,7 @@ static inline int copy_ldt(mm_context_t *new, mm_context_t *old) - return err; - - for (i = 0; i < old->size; i++) -- write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE); -+ write_ldt_entry(new->ldt, i, old->ldt + i); - return 0; - } - -@@ -115,6 +115,24 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) - retval = copy_ldt(&mm->context, &old_mm->context); - mutex_unlock(&old_mm->context.lock); - } -+ -+ if (tsk == current) { -+ mm->context.vdso = 0; -+ -+#ifdef CONFIG_X86_32 -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+ mm->context.user_cs_base = 0UL; -+ mm->context.user_cs_limit = ~0UL; -+ -+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) -+ cpus_clear(mm->context.cpu_user_cs_mask); -+#endif -+ -+#endif -+#endif -+ -+ } -+ - return retval; - } - -@@ -229,6 +247,13 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode) - } - } - -+#ifdef CONFIG_PAX_SEGMEXEC -+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) { -+ error = -EINVAL; -+ goto out_unlock; -+ } -+#endif -+ - fill_ldt(&ldt, &ldt_info); - if (oldmode) - ldt.avl = 0; -diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c -index 5b19e4d..6476a76 100644 ---- a/arch/x86/kernel/machine_kexec_32.c -+++ b/arch/x86/kernel/machine_kexec_32.c -@@ -26,7 +26,7 @@ - #include - #include - --static void set_idt(void *newidt, __u16 limit) -+static void set_idt(struct desc_struct *newidt, __u16 limit) - { - struct desc_ptr curidt; - -@@ -38,7 +38,7 @@ static void set_idt(void *newidt, __u16 limit) - } - - --static void set_gdt(void *newgdt, __u16 limit) -+static void set_gdt(struct desc_struct *newgdt, __u16 limit) - { - struct desc_ptr curgdt; - -@@ -216,7 +216,7 @@ void machine_kexec(struct kimage *image) - } - - control_page = page_address(image->control_code_page); -- memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE); -+ memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE); - - relocate_kernel_ptr = control_page; - page_list[PA_CONTROL_PAGE] = __pa(control_page); -diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c -index 0327e2b..e43737b 100644 ---- a/arch/x86/kernel/microcode_intel.c -+++ b/arch/x86/kernel/microcode_intel.c -@@ -430,13 +430,13 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device) - - static int get_ucode_user(void *to, const void *from, size_t n) - { -- return copy_from_user(to, from, n); -+ return copy_from_user(to, (const void __force_user *)from, n); - } - - static enum ucode_state - request_microcode_user(int cpu, const void __user *buf, size_t size) - { -- return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user); -+ return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user); - } - - static void microcode_fini_cpu(int cpu) -diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c -index 216a4d7..b328f09 100644 ---- a/arch/x86/kernel/module.c -+++ b/arch/x86/kernel/module.c -@@ -43,15 +43,60 @@ do { \ - } while (0) - #endif - --void *module_alloc(unsigned long size) -+static inline void *__module_alloc(unsigned long size, pgprot_t prot) - { -- if (PAGE_ALIGN(size) > MODULES_LEN) -+ if (size == 0 || PAGE_ALIGN(size) > MODULES_LEN) - return NULL; - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, -- GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC, -+ GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, prot, - -1, __builtin_return_address(0)); - } - -+void *module_alloc(unsigned long size) -+{ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ return __module_alloc(size, PAGE_KERNEL); -+#else -+ return __module_alloc(size, PAGE_KERNEL_EXEC); -+#endif -+ -+} -+ -+#ifdef CONFIG_PAX_KERNEXEC -+#ifdef CONFIG_X86_32 -+void *module_alloc_exec(unsigned long size) -+{ -+ struct vm_struct *area; -+ -+ if (size == 0) -+ return NULL; -+ -+ area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END); -+ return area ? area->addr : NULL; -+} -+EXPORT_SYMBOL(module_alloc_exec); -+ -+void module_free_exec(struct module *mod, void *module_region) -+{ -+ vunmap(module_region); -+} -+EXPORT_SYMBOL(module_free_exec); -+#else -+void module_free_exec(struct module *mod, void *module_region) -+{ -+ module_free(mod, module_region); -+} -+EXPORT_SYMBOL(module_free_exec); -+ -+void *module_alloc_exec(unsigned long size) -+{ -+ return __module_alloc(size, PAGE_KERNEL_RX); -+} -+EXPORT_SYMBOL(module_alloc_exec); -+#endif -+#endif -+ - #ifdef CONFIG_X86_32 - int apply_relocate(Elf32_Shdr *sechdrs, - const char *strtab, -@@ -62,14 +107,16 @@ int apply_relocate(Elf32_Shdr *sechdrs, - unsigned int i; - Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; - Elf32_Sym *sym; -- uint32_t *location; -+ uint32_t *plocation, location; - - DEBUGP("Applying relocate section %u to %u\n", - relsec, sechdrs[relsec].sh_info); - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ -- location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr -- + rel[i].r_offset; -+ plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset; -+ location = (uint32_t)plocation; -+ if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR) -+ plocation = ktla_ktva((void *)plocation); - /* This is the symbol it is referring to. Note that all - undefined symbols have been resolved. */ - sym = (Elf32_Sym *)sechdrs[symindex].sh_addr -@@ -78,11 +125,15 @@ int apply_relocate(Elf32_Shdr *sechdrs, - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_386_32: - /* We add the value into the location given */ -- *location += sym->st_value; -+ pax_open_kernel(); -+ *plocation += sym->st_value; -+ pax_close_kernel(); - break; - case R_386_PC32: - /* Add the value, subtract its position */ -- *location += sym->st_value - (uint32_t)location; -+ pax_open_kernel(); -+ *plocation += sym->st_value - location; -+ pax_close_kernel(); - break; - default: - pr_err("%s: Unknown relocation: %u\n", -@@ -127,21 +178,30 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, - case R_X86_64_NONE: - break; - case R_X86_64_64: -+ pax_open_kernel(); - *(u64 *)loc = val; -+ pax_close_kernel(); - break; - case R_X86_64_32: -+ pax_open_kernel(); - *(u32 *)loc = val; -+ pax_close_kernel(); - if (val != *(u32 *)loc) - goto overflow; - break; - case R_X86_64_32S: -+ pax_open_kernel(); - *(s32 *)loc = val; -+ pax_close_kernel(); - if ((s64)val != *(s32 *)loc) - goto overflow; - break; - case R_X86_64_PC32: - val -= (u64)loc; -+ pax_open_kernel(); - *(u32 *)loc = val; -+ pax_close_kernel(); -+ - #if 0 - if ((s64)val != *(s32 *)loc) - goto overflow; -diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c -index f84f5c5..e27e54b 100644 ---- a/arch/x86/kernel/nmi.c -+++ b/arch/x86/kernel/nmi.c -@@ -479,6 +479,17 @@ static inline void nmi_nesting_postprocess(void) - dotraplinkage notrace __kprobes void - do_nmi(struct pt_regs *regs, long error_code) - { -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ if (!user_mode(regs)) { -+ unsigned long cs = regs->cs & 0xFFFF; -+ unsigned long ip = ktva_ktla(regs->ip); -+ -+ if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext) -+ regs->ip = ip; -+ } -+#endif -+ - nmi_nesting_preprocess(regs); - - nmi_enter(); -diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c -index 676b8c7..870ba04 100644 ---- a/arch/x86/kernel/paravirt-spinlocks.c -+++ b/arch/x86/kernel/paravirt-spinlocks.c -@@ -13,7 +13,7 @@ default_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags) - arch_spin_lock(lock); - } - --struct pv_lock_ops pv_lock_ops = { -+struct pv_lock_ops pv_lock_ops __read_only = { - #ifdef CONFIG_SMP - .spin_is_locked = __ticket_spin_is_locked, - .spin_is_contended = __ticket_spin_is_contended, -diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c -index 17fff18..7bb2088 100644 ---- a/arch/x86/kernel/paravirt.c -+++ b/arch/x86/kernel/paravirt.c -@@ -55,6 +55,9 @@ u64 _paravirt_ident_64(u64 x) - { - return x; - } -+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) -+PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64); -+#endif - - void __init default_banner(void) - { -@@ -147,15 +150,19 @@ unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf, - if (opfunc == NULL) - /* If there's no function, patch it with a ud2a (BUG) */ - ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a)); -- else if (opfunc == _paravirt_nop) -+ else if (opfunc == (void *)_paravirt_nop) - /* If the operation is a nop, then nop the callsite */ - ret = paravirt_patch_nop(); - - /* identity functions just return their single argument */ -- else if (opfunc == _paravirt_ident_32) -+ else if (opfunc == (void *)_paravirt_ident_32) - ret = paravirt_patch_ident_32(insnbuf, len); -- else if (opfunc == _paravirt_ident_64) -+ else if (opfunc == (void *)_paravirt_ident_64) -+ ret = paravirt_patch_ident_64(insnbuf, len); -+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) -+ else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64) - ret = paravirt_patch_ident_64(insnbuf, len); -+#endif - - else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) || - type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) || -@@ -180,7 +187,7 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len, - if (insn_len > len || start == NULL) - insn_len = len; - else -- memcpy(insnbuf, start, insn_len); -+ memcpy(insnbuf, ktla_ktva(start), insn_len); - - return insn_len; - } -@@ -304,7 +311,7 @@ void arch_flush_lazy_mmu_mode(void) - preempt_enable(); - } - --struct pv_info pv_info = { -+struct pv_info pv_info __read_only = { - .name = "bare hardware", - .paravirt_enabled = 0, - .kernel_rpl = 0, -@@ -315,16 +322,16 @@ struct pv_info pv_info = { - #endif - }; - --struct pv_init_ops pv_init_ops = { -+struct pv_init_ops pv_init_ops __read_only = { - .patch = native_patch, - }; - --struct pv_time_ops pv_time_ops = { -+struct pv_time_ops pv_time_ops __read_only = { - .sched_clock = native_sched_clock, - .steal_clock = native_steal_clock, - }; - --struct pv_irq_ops pv_irq_ops = { -+struct pv_irq_ops pv_irq_ops __read_only = { - .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), - .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), - .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), -@@ -336,7 +343,7 @@ struct pv_irq_ops pv_irq_ops = { - #endif - }; - --struct pv_cpu_ops pv_cpu_ops = { -+struct pv_cpu_ops pv_cpu_ops __read_only = { - .cpuid = native_cpuid, - .get_debugreg = native_get_debugreg, - .set_debugreg = native_set_debugreg, -@@ -395,21 +402,26 @@ struct pv_cpu_ops pv_cpu_ops = { - .end_context_switch = paravirt_nop, - }; - --struct pv_apic_ops pv_apic_ops = { -+struct pv_apic_ops pv_apic_ops __read_only = { - #ifdef CONFIG_X86_LOCAL_APIC - .startup_ipi_hook = paravirt_nop, - #endif - }; - --#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) -+#ifdef CONFIG_X86_32 -+#ifdef CONFIG_X86_PAE -+/* 64-bit pagetable entries */ -+#define PTE_IDENT PV_CALLEE_SAVE(_paravirt_ident_64) -+#else - /* 32-bit pagetable entries */ - #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32) -+#endif - #else - /* 64-bit pagetable entries */ - #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) - #endif - --struct pv_mmu_ops pv_mmu_ops = { -+struct pv_mmu_ops pv_mmu_ops __read_only = { - - .read_cr2 = native_read_cr2, - .write_cr2 = native_write_cr2, -@@ -459,6 +471,7 @@ struct pv_mmu_ops pv_mmu_ops = { - .make_pud = PTE_IDENT, - - .set_pgd = native_set_pgd, -+ .set_pgd_batched = native_set_pgd_batched, - #endif - #endif /* PAGETABLE_LEVELS >= 3 */ - -@@ -478,6 +491,12 @@ struct pv_mmu_ops pv_mmu_ops = { - }, - - .set_fixmap = native_set_fixmap, -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ .pax_open_kernel = native_pax_open_kernel, -+ .pax_close_kernel = native_pax_close_kernel, -+#endif -+ - }; - - EXPORT_SYMBOL_GPL(pv_time_ops); -diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c -index 35ccf75..7a15747 100644 ---- a/arch/x86/kernel/pci-iommu_table.c -+++ b/arch/x86/kernel/pci-iommu_table.c -@@ -2,7 +2,7 @@ - #include - #include - #include -- -+#include - - #define DEBUG 1 - -diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c -index ef6a845..8028ed3 100644 ---- a/arch/x86/kernel/process.c -+++ b/arch/x86/kernel/process.c -@@ -36,7 +36,8 @@ - * section. Since TSS's are completely CPU-local, we want them - * on exact cacheline boundaries, to eliminate cacheline ping-pong. - */ --DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; -+struct tss_struct init_tss[NR_CPUS] ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS }; -+EXPORT_SYMBOL(init_tss); - - #ifdef CONFIG_X86_64 - static DEFINE_PER_CPU(unsigned char, is_idle); -@@ -94,7 +95,7 @@ void arch_task_cache_init(void) - task_xstate_cachep = - kmem_cache_create("task_xstate", xstate_size, - __alignof__(union thread_xstate), -- SLAB_PANIC | SLAB_NOTRACK, NULL); -+ SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL); - } - - static inline void drop_fpu(struct task_struct *tsk) -@@ -117,7 +118,7 @@ void exit_thread(void) - unsigned long *bp = t->io_bitmap_ptr; - - if (bp) { -- struct tss_struct *tss = &per_cpu(init_tss, get_cpu()); -+ struct tss_struct *tss = init_tss + get_cpu(); - - t->io_bitmap_ptr = NULL; - clear_thread_flag(TIF_IO_BITMAP); -@@ -148,7 +149,7 @@ void show_regs_common(void) - board = dmi_get_system_info(DMI_BOARD_NAME); - - printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s %s %s%s%s\n", -- current->pid, current->comm, print_tainted(), -+ task_pid_nr(current), current->comm, print_tainted(), - init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version, -@@ -161,6 +162,9 @@ void flush_thread(void) - { - struct task_struct *tsk = current; - -+#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF) -+ loadsegment(gs, 0); -+#endif - flush_ptrace_hw_breakpoint(tsk); - memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array)); - drop_fpu(tsk); -@@ -318,10 +322,10 @@ int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) - regs.di = (unsigned long) arg; - - #ifdef CONFIG_X86_32 -- regs.ds = __USER_DS; -- regs.es = __USER_DS; -+ regs.ds = __KERNEL_DS; -+ regs.es = __KERNEL_DS; - regs.fs = __KERNEL_PERCPU; -- regs.gs = __KERNEL_STACK_CANARY; -+ savesegment(gs, regs.gs); - #else - regs.ss = __KERNEL_DS; - #endif -@@ -407,7 +411,7 @@ static void __exit_idle(void) - void exit_idle(void) - { - /* idle loop has pid 0 */ -- if (current->pid) -+ if (task_pid_nr(current)) - return; - __exit_idle(); - } -@@ -516,7 +520,7 @@ bool set_pm_idle_to_default(void) - - return ret; - } --void stop_this_cpu(void *dummy) -+__noreturn void stop_this_cpu(void *dummy) - { - local_irq_disable(); - /* -@@ -744,16 +748,37 @@ static int __init idle_setup(char *str) - } - early_param("idle", idle_setup); - --unsigned long arch_align_stack(unsigned long sp) -+#ifdef CONFIG_PAX_RANDKSTACK -+void pax_randomize_kstack(struct pt_regs *regs) - { -- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) -- sp -= get_random_int() % 8192; -- return sp & ~0xf; --} -+ struct thread_struct *thread = ¤t->thread; -+ unsigned long time; - --unsigned long arch_randomize_brk(struct mm_struct *mm) --{ -- unsigned long range_end = mm->brk + 0x02000000; -- return randomize_range(mm->brk, range_end, 0) ? : mm->brk; --} -+ if (!randomize_va_space) -+ return; -+ -+ if (v8086_mode(regs)) -+ return; -+ -+ rdtscl(time); - -+ /* P4 seems to return a 0 LSB, ignore it */ -+#ifdef CONFIG_MPENTIUM4 -+ time &= 0x3EUL; -+ time <<= 2; -+#elif defined(CONFIG_X86_64) -+ time &= 0xFUL; -+ time <<= 4; -+#else -+ time &= 0x1FUL; -+ time <<= 3; -+#endif -+ -+ thread->sp0 ^= time; -+ load_sp0(init_tss + smp_processor_id(), thread); -+ -+#ifdef CONFIG_X86_64 -+ this_cpu_write(kernel_stack, thread->sp0); -+#endif -+} -+#endif -diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c -index 516fa18..d3a7099 100644 ---- a/arch/x86/kernel/process_32.c -+++ b/arch/x86/kernel/process_32.c -@@ -64,6 +64,7 @@ asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); - unsigned long thread_saved_pc(struct task_struct *tsk) - { - return ((unsigned long *)tsk->thread.sp)[3]; -+//XXX return tsk->thread.eip; - } - - void __show_regs(struct pt_regs *regs, int all) -@@ -73,21 +74,20 @@ void __show_regs(struct pt_regs *regs, int all) - unsigned long sp; - unsigned short ss, gs; - -- if (user_mode_vm(regs)) { -+ if (user_mode(regs)) { - sp = regs->sp; - ss = regs->ss & 0xffff; -- gs = get_user_gs(regs); - } else { - sp = kernel_stack_pointer(regs); - savesegment(ss, ss); -- savesegment(gs, gs); - } -+ gs = get_user_gs(regs); - - show_regs_common(); - - printk(KERN_DEFAULT "EIP: %04x:[<%08lx>] EFLAGS: %08lx CPU: %d\n", - (u16)regs->cs, regs->ip, regs->flags, -- smp_processor_id()); -+ raw_smp_processor_id()); - print_symbol("EIP is at %s\n", regs->ip); - - printk(KERN_DEFAULT "EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n", -@@ -134,13 +134,14 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, - struct task_struct *tsk; - int err; - -- childregs = task_pt_regs(p); -+ childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8; - *childregs = *regs; - childregs->ax = 0; - childregs->sp = sp; - - p->thread.sp = (unsigned long) childregs; - p->thread.sp0 = (unsigned long) (childregs+1); -+ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); - - p->thread.ip = (unsigned long) ret_from_fork; - -@@ -231,7 +232,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - struct thread_struct *prev = &prev_p->thread, - *next = &next_p->thread; - int cpu = smp_processor_id(); -- struct tss_struct *tss = &per_cpu(init_tss, cpu); -+ struct tss_struct *tss = init_tss + cpu; - fpu_switch_t fpu; - - /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */ -@@ -255,6 +256,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - */ - lazy_save_gs(prev->gs); - -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(task_thread_info(next_p)->addr_limit); -+#endif -+ - /* - * Load the per-thread Thread-Local Storage descriptor. - */ -@@ -285,6 +290,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - */ - arch_end_context_switch(next_p); - -+ this_cpu_write(current_task, next_p); -+ this_cpu_write(current_tinfo, &next_p->tinfo); -+ - /* - * Restore %gs if needed (which is common) - */ -@@ -293,8 +301,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - - switch_fpu_finish(next_p, fpu); - -- this_cpu_write(current_task, next_p); -- - return prev_p; - } - -@@ -324,4 +330,3 @@ unsigned long get_wchan(struct task_struct *p) - } while (count++ < 16); - return 0; - } -- -diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c -index 0a980c9..1d0e689 100644 ---- a/arch/x86/kernel/process_64.c -+++ b/arch/x86/kernel/process_64.c -@@ -153,8 +153,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, - struct pt_regs *childregs; - struct task_struct *me = current; - -- childregs = ((struct pt_regs *) -- (THREAD_SIZE + task_stack_page(p))) - 1; -+ childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 16; - *childregs = *regs; - - childregs->ax = 0; -@@ -166,6 +165,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, - p->thread.sp = (unsigned long) childregs; - p->thread.sp0 = (unsigned long) (childregs+1); - p->thread.usersp = me->thread.usersp; -+ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); - - set_tsk_thread_flag(p, TIF_FORK); - -@@ -271,7 +271,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - struct thread_struct *prev = &prev_p->thread; - struct thread_struct *next = &next_p->thread; - int cpu = smp_processor_id(); -- struct tss_struct *tss = &per_cpu(init_tss, cpu); -+ struct tss_struct *tss = init_tss + cpu; - unsigned fsindex, gsindex; - fpu_switch_t fpu; - -@@ -353,10 +353,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) - prev->usersp = this_cpu_read(old_rsp); - this_cpu_write(old_rsp, next->usersp); - this_cpu_write(current_task, next_p); -+ this_cpu_write(current_tinfo, &next_p->tinfo); - -- this_cpu_write(kernel_stack, -- (unsigned long)task_stack_page(next_p) + -- THREAD_SIZE - KERNEL_STACK_OFFSET); -+ this_cpu_write(kernel_stack, next->sp0); - - /* - * Now maybe reload the debug registers and handle I/O bitmaps -@@ -425,12 +424,11 @@ unsigned long get_wchan(struct task_struct *p) - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - stack = (unsigned long)task_stack_page(p); -- if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE) -+ if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64)) - return 0; - fp = *(u64 *)(p->thread.sp); - do { -- if (fp < (unsigned long)stack || -- fp >= (unsigned long)stack+THREAD_SIZE) -+ if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64)) - return 0; - ip = *(u64 *)(fp+8); - if (!in_sched_functions(ip)) -diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c -index 9ee1787..33228a7 100644 ---- a/arch/x86/kernel/ptrace.c -+++ b/arch/x86/kernel/ptrace.c -@@ -182,14 +182,13 @@ unsigned long kernel_stack_pointer(struct pt_regs *regs) - { - unsigned long context = (unsigned long)regs & ~(THREAD_SIZE - 1); - unsigned long sp = (unsigned long)®s->sp; -- struct thread_info *tinfo; - -- if (context == (sp & ~(THREAD_SIZE - 1))) -+ if (context == ((sp + 8) & ~(THREAD_SIZE - 1))) - return sp; - -- tinfo = (struct thread_info *)context; -- if (tinfo->previous_esp) -- return tinfo->previous_esp; -+ sp = *(unsigned long *)context; -+ if (sp) -+ return sp; - - return (unsigned long)regs; - } -@@ -854,7 +853,7 @@ long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) - { - int ret; -- unsigned long __user *datap = (unsigned long __user *)data; -+ unsigned long __user *datap = (__force unsigned long __user *)data; - - switch (request) { - /* read the word at location addr in the USER area. */ -@@ -939,14 +938,14 @@ long arch_ptrace(struct task_struct *child, long request, - if ((int) addr < 0) - return -EIO; - ret = do_get_thread_area(child, addr, -- (struct user_desc __user *)data); -+ (__force struct user_desc __user *) data); - break; - - case PTRACE_SET_THREAD_AREA: - if ((int) addr < 0) - return -EIO; - ret = do_set_thread_area(child, addr, -- (struct user_desc __user *)data, 0); -+ (__force struct user_desc __user *) data, 0); - break; - #endif - -@@ -1456,7 +1455,7 @@ static void fill_sigtrap_info(struct task_struct *tsk, - memset(info, 0, sizeof(*info)); - info->si_signo = SIGTRAP; - info->si_code = si_code; -- info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL; -+ info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL; - } - - void user_single_step_siginfo(struct task_struct *tsk, -@@ -1485,6 +1484,10 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, - # define IS_IA32 0 - #endif - -+#ifdef CONFIG_GRKERNSEC_SETXID -+extern void gr_delayed_cred_worker(void); -+#endif -+ - /* - * We must return the syscall number to actually look up in the table. - * This can be -1L to skip running any syscall at all. -@@ -1493,6 +1496,11 @@ long syscall_trace_enter(struct pt_regs *regs) - { - long ret = 0; - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - /* - * If we stepped into a sysenter/syscall insn, it trapped in - * kernel mode; do_debug() cleared TF and set TIF_SINGLESTEP. -@@ -1541,6 +1549,11 @@ void syscall_trace_leave(struct pt_regs *regs) - { - bool step; - -+#ifdef CONFIG_GRKERNSEC_SETXID -+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) -+ gr_delayed_cred_worker(); -+#endif -+ - audit_syscall_exit(regs); - - if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) -diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c -index 42eb330..139955c 100644 ---- a/arch/x86/kernel/pvclock.c -+++ b/arch/x86/kernel/pvclock.c -@@ -81,11 +81,11 @@ unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src) - return pv_tsc_khz; - } - --static atomic64_t last_value = ATOMIC64_INIT(0); -+static atomic64_unchecked_t last_value = ATOMIC64_INIT(0); - - void pvclock_resume(void) - { -- atomic64_set(&last_value, 0); -+ atomic64_set_unchecked(&last_value, 0); - } - - cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) -@@ -121,11 +121,11 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) - * updating at the same time, and one of them could be slightly behind, - * making the assumption that last_value always go forward fail to hold. - */ -- last = atomic64_read(&last_value); -+ last = atomic64_read_unchecked(&last_value); - do { - if (ret < last) - return last; -- last = atomic64_cmpxchg(&last_value, last, ret); -+ last = atomic64_cmpxchg_unchecked(&last_value, last, ret); - } while (unlikely(last != ret)); - - return ret; -diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c -index 3f20ab4..95b8bf4 100644 ---- a/arch/x86/kernel/reboot.c -+++ b/arch/x86/kernel/reboot.c -@@ -36,7 +36,7 @@ void (*pm_power_off)(void); - EXPORT_SYMBOL(pm_power_off); - - static const struct desc_ptr no_idt = {}; --static int reboot_mode; -+static unsigned short reboot_mode; - enum reboot_type reboot_type = BOOT_ACPI; - int reboot_force; - -@@ -157,6 +157,11 @@ static int __init set_bios_reboot(const struct dmi_system_id *d) - - void __noreturn machine_real_restart(unsigned int type) - { -+ -+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) -+ struct desc_struct *gdt; -+#endif -+ - local_irq_disable(); - - /* -@@ -184,7 +189,29 @@ void __noreturn machine_real_restart(unsigned int type) - - /* Jump to the identity-mapped low memory code */ - #ifdef CONFIG_X86_32 -- asm volatile("jmpl *%0" : : -+ -+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF) -+ gdt = get_cpu_gdt_table(smp_processor_id()); -+ pax_open_kernel(); -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ gdt[GDT_ENTRY_KERNEL_DS].type = 3; -+ gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf; -+ loadsegment(ds, __KERNEL_DS); -+ loadsegment(es, __KERNEL_DS); -+ loadsegment(ss, __KERNEL_DS); -+#endif -+#ifdef CONFIG_PAX_KERNEXEC -+ gdt[GDT_ENTRY_KERNEL_CS].base0 = 0; -+ gdt[GDT_ENTRY_KERNEL_CS].base1 = 0; -+ gdt[GDT_ENTRY_KERNEL_CS].base2 = 0; -+ gdt[GDT_ENTRY_KERNEL_CS].limit0 = 0xffff; -+ gdt[GDT_ENTRY_KERNEL_CS].limit = 0xf; -+ gdt[GDT_ENTRY_KERNEL_CS].g = 1; -+#endif -+ pax_close_kernel(); -+#endif -+ -+ asm volatile("ljmpl *%0" : : - "rm" (real_mode_header->machine_real_restart_asm), - "a" (type)); - #else -@@ -539,7 +566,7 @@ void __attribute__((weak)) mach_reboot_fixups(void) - * try to force a triple fault and then cycle between hitting the keyboard - * controller and doing that - */ --static void native_machine_emergency_restart(void) -+static void __noreturn native_machine_emergency_restart(void) - { - int i; - int attempt = 0; -@@ -662,13 +689,13 @@ void native_machine_shutdown(void) - #endif - } - --static void __machine_emergency_restart(int emergency) -+static void __noreturn __machine_emergency_restart(int emergency) - { - reboot_emergency = emergency; - machine_ops.emergency_restart(); - } - --static void native_machine_restart(char *__unused) -+static void __noreturn native_machine_restart(char *__unused) - { - pr_notice("machine restart\n"); - -@@ -677,7 +704,7 @@ static void native_machine_restart(char *__unused) - __machine_emergency_restart(0); - } - --static void native_machine_halt(void) -+static void __noreturn native_machine_halt(void) - { - /* Stop other cpus and apics */ - machine_shutdown(); -@@ -687,7 +714,7 @@ static void native_machine_halt(void) - stop_this_cpu(NULL); - } - --static void native_machine_power_off(void) -+static void __noreturn native_machine_power_off(void) - { - if (pm_power_off) { - if (!reboot_force) -@@ -696,6 +723,7 @@ static void native_machine_power_off(void) - } - /* A fallback in case there is no PM info available */ - tboot_shutdown(TB_SHUTDOWN_HALT); -+ unreachable(); - } - - struct machine_ops machine_ops = { -diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S -index 7a6f3b3..bed145d7 100644 ---- a/arch/x86/kernel/relocate_kernel_64.S -+++ b/arch/x86/kernel/relocate_kernel_64.S -@@ -11,6 +11,7 @@ - #include - #include - #include -+#include - - /* - * Must be relocatable PIC code callable as a C function -@@ -160,13 +161,14 @@ identity_mapped: - xorq %rbp, %rbp - xorq %r8, %r8 - xorq %r9, %r9 -- xorq %r10, %r9 -+ xorq %r10, %r10 - xorq %r11, %r11 - xorq %r12, %r12 - xorq %r13, %r13 - xorq %r14, %r14 - xorq %r15, %r15 - -+ pax_force_retaddr 0, 1 - ret - - 1: -diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c -index 771ff4d..4f9a14d 100644 ---- a/arch/x86/kernel/setup.c -+++ b/arch/x86/kernel/setup.c -@@ -440,7 +440,7 @@ static void __init parse_setup_data(void) - - switch (data->type) { - case SETUP_E820_EXT: -- parse_e820_ext(data); -+ parse_e820_ext((struct setup_data __force_kernel *)data); - break; - case SETUP_DTB: - add_dtb(pa_data); -@@ -709,7 +709,7 @@ static void __init trim_bios_range(void) - * area (640->1Mb) as ram even though it is not. - * take them out. - */ -- e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); -+ e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1); - - sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); - } -@@ -833,14 +833,14 @@ void __init setup_arch(char **cmdline_p) - - if (!boot_params.hdr.root_flags) - root_mountflags &= ~MS_RDONLY; -- init_mm.start_code = (unsigned long) _text; -- init_mm.end_code = (unsigned long) _etext; -+ init_mm.start_code = ktla_ktva((unsigned long) _text); -+ init_mm.end_code = ktla_ktva((unsigned long) _etext); - init_mm.end_data = (unsigned long) _edata; - init_mm.brk = _brk_end; - -- code_resource.start = virt_to_phys(_text); -- code_resource.end = virt_to_phys(_etext)-1; -- data_resource.start = virt_to_phys(_etext); -+ code_resource.start = virt_to_phys(ktla_ktva(_text)); -+ code_resource.end = virt_to_phys(ktla_ktva(_etext))-1; -+ data_resource.start = virt_to_phys(_sdata); - data_resource.end = virt_to_phys(_edata)-1; - bss_resource.start = virt_to_phys(&__bss_start); - bss_resource.end = virt_to_phys(&__bss_stop)-1; -diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c -index 5cdff03..5810740 100644 ---- a/arch/x86/kernel/setup_percpu.c -+++ b/arch/x86/kernel/setup_percpu.c -@@ -21,19 +21,17 @@ - #include - #include - --DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number); -+#ifdef CONFIG_SMP -+DEFINE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number); - EXPORT_PER_CPU_SYMBOL(cpu_number); -+#endif - --#ifdef CONFIG_X86_64 - #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load) --#else --#define BOOT_PERCPU_OFFSET 0 --#endif - - DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET; - EXPORT_PER_CPU_SYMBOL(this_cpu_off); - --unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = { -+unsigned long __per_cpu_offset[NR_CPUS] __read_only = { - [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET, - }; - EXPORT_SYMBOL(__per_cpu_offset); -@@ -155,10 +153,10 @@ static inline void setup_percpu_segment(int cpu) - { - #ifdef CONFIG_X86_32 - struct desc_struct gdt; -+ unsigned long base = per_cpu_offset(cpu); - -- pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF, -- 0x2 | DESCTYPE_S, 0x8); -- gdt.s = 1; -+ pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT, -+ 0x83 | DESCTYPE_S, 0xC); - write_gdt_entry(get_cpu_gdt_table(cpu), - GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); - #endif -@@ -219,6 +217,11 @@ void __init setup_per_cpu_areas(void) - /* alrighty, percpu areas up and running */ - delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start; - for_each_possible_cpu(cpu) { -+#ifdef CONFIG_CC_STACKPROTECTOR -+#ifdef CONFIG_X86_32 -+ unsigned long canary = per_cpu(stack_canary.canary, cpu); -+#endif -+#endif - per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu]; - per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); - per_cpu(cpu_number, cpu) = cpu; -@@ -259,6 +262,12 @@ void __init setup_per_cpu_areas(void) - */ - set_cpu_numa_node(cpu, early_cpu_to_node(cpu)); - #endif -+#ifdef CONFIG_CC_STACKPROTECTOR -+#ifdef CONFIG_X86_32 -+ if (!cpu) -+ per_cpu(stack_canary.canary, cpu) = canary; -+#endif -+#endif - /* - * Up to this point, the boot CPU has been using .init.data - * area. Reload any changed state for the boot CPU. -diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c -index b280908..6de349e 100644 ---- a/arch/x86/kernel/signal.c -+++ b/arch/x86/kernel/signal.c -@@ -194,7 +194,7 @@ static unsigned long align_sigframe(unsigned long sp) - * Align the stack pointer according to the i386 ABI, - * i.e. so that on function entry ((sp + 4) & 15) == 0. - */ -- sp = ((sp + 4) & -16ul) - 4; -+ sp = ((sp - 12) & -16ul) - 4; - #else /* !CONFIG_X86_32 */ - sp = round_down(sp, 16) - 8; - #endif -@@ -245,11 +245,11 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size, - * Return an always-bogus address instead so we will die with SIGSEGV. - */ - if (onsigstack && !likely(on_sig_stack(sp))) -- return (void __user *)-1L; -+ return (__force void __user *)-1L; - - /* save i387 state */ - if (used_math() && save_i387_xstate(*fpstate) < 0) -- return (void __user *)-1L; -+ return (__force void __user *)-1L; - - return (void __user *)sp; - } -@@ -304,9 +304,9 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, - } - - if (current->mm->context.vdso) -- restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); -+ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); - else -- restorer = &frame->retcode; -+ restorer = (void __user *)&frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; - -@@ -320,7 +320,7 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, - * reasons and because gdb uses it as a signature to notice - * signal handler stack frames. - */ -- err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode); -+ err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode); - - if (err) - return -EFAULT; -@@ -374,7 +374,10 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); - - /* Set up to return from userspace. */ -- restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); -+ if (current->mm->context.vdso) -+ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); -+ else -+ restorer = (void __user *)&frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; - put_user_ex(restorer, &frame->pretcode); -@@ -386,7 +389,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - * reasons and because gdb uses it as a signature to notice - * signal handler stack frames. - */ -- put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode); -+ put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode); - } put_user_catch(err); - - if (err) -diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c -index 23c39cf..52ed8d9 100644 ---- a/arch/x86/kernel/smpboot.c -+++ b/arch/x86/kernel/smpboot.c -@@ -672,6 +672,7 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu, struct task_struct *idle) - idle->thread.sp = (unsigned long) (((struct pt_regs *) - (THREAD_SIZE + task_stack_page(idle))) - 1); - per_cpu(current_task, cpu) = idle; -+ per_cpu(current_tinfo, cpu) = &idle->tinfo; - - #ifdef CONFIG_X86_32 - /* Stack for startup_32 can be just as for start_secondary onwards */ -@@ -679,11 +680,13 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu, struct task_struct *idle) - #else - clear_tsk_thread_flag(idle, TIF_FORK); - initial_gs = per_cpu_offset(cpu); -- per_cpu(kernel_stack, cpu) = -- (unsigned long)task_stack_page(idle) - -- KERNEL_STACK_OFFSET + THREAD_SIZE; -+ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE; - #endif -+ -+ pax_open_kernel(); - early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); -+ pax_close_kernel(); -+ - initial_code = (unsigned long)start_secondary; - stack_start = idle->thread.sp; - -@@ -822,6 +825,15 @@ int __cpuinit native_cpu_up(unsigned int cpu, struct task_struct *tidle) - /* the FPU context is blank, nobody can own it */ - __cpu_disable_lazy_restore(cpu); - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ clone_pgd_range(get_cpu_pgd(cpu) + KERNEL_PGD_BOUNDARY, -+ swapper_pg_dir + KERNEL_PGD_BOUNDARY, -+ KERNEL_PGD_PTRS); -+#endif -+ -+ /* the FPU context is blank, nobody can own it */ -+ __cpu_disable_lazy_restore(cpu); -+ - err = do_boot_cpu(apicid, cpu, tidle); - if (err) { - pr_debug("do_boot_cpu failed %d\n", err); -diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c -index c346d11..d43b163 100644 ---- a/arch/x86/kernel/step.c -+++ b/arch/x86/kernel/step.c -@@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re - struct desc_struct *desc; - unsigned long base; - -- seg &= ~7UL; -+ seg >>= 3; - - mutex_lock(&child->mm->context.lock); -- if (unlikely((seg >> 3) >= child->mm->context.size)) -+ if (unlikely(seg >= child->mm->context.size)) - addr = -1L; /* bogus selector, access would fault */ - else { - desc = child->mm->context.ldt + seg; -@@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re - addr += base; - } - mutex_unlock(&child->mm->context.lock); -- } -+ } else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS) -+ addr = ktla_ktva(addr); - - return addr; - } -@@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct task_struct *child, struct pt_regs *regs) - unsigned char opcode[15]; - unsigned long addr = convert_ip_to_linear(child, regs); - -+ if (addr == -EINVAL) -+ return 0; -+ - copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0); - for (i = 0; i < copied; i++) { - switch (opcode[i]) { -diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c -index 0b0cb5f..db6b9ed 100644 ---- a/arch/x86/kernel/sys_i386_32.c -+++ b/arch/x86/kernel/sys_i386_32.c -@@ -24,17 +24,224 @@ - - #include - --/* -- * Do a system call from kernel instead of calling sys_execve so we -- * end up with proper pt_regs. -- */ --int kernel_execve(const char *filename, -- const char *const argv[], -- const char *const envp[]) -+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) -+{ -+ unsigned long pax_task_size = TASK_SIZE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif -+ -+ if (len > pax_task_size || addr > pax_task_size - len) -+ return -EINVAL; -+ -+ return 0; -+} -+ -+unsigned long -+arch_get_unmapped_area(struct file *filp, unsigned long addr, -+ unsigned long len, unsigned long pgoff, unsigned long flags) -+{ -+ struct mm_struct *mm = current->mm; -+ struct vm_area_struct *vma; -+ unsigned long start_addr, pax_task_size = TASK_SIZE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif -+ -+ pax_task_size -= PAGE_SIZE; -+ -+ if (len > pax_task_size) -+ return -ENOMEM; -+ -+ if (flags & MAP_FIXED) -+ return addr; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ -+ if (addr) { -+ addr = PAGE_ALIGN(addr); -+ if (pax_task_size - len >= addr) { -+ vma = find_vma(mm, addr); -+ if (check_heap_stack_gap(vma, addr, len)) -+ return addr; -+ } -+ } -+ if (len > mm->cached_hole_size) { -+ start_addr = addr = mm->free_area_cache; -+ } else { -+ start_addr = addr = mm->mmap_base; -+ mm->cached_hole_size = 0; -+ } -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE) && start_addr >= mm->mmap_base) { -+ start_addr = 0x00110000UL; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ start_addr += mm->delta_mmap & 0x03FFF000UL; -+#endif -+ -+ if (mm->start_brk <= start_addr && start_addr < mm->mmap_base) -+ start_addr = addr = mm->mmap_base; -+ else -+ addr = start_addr; -+ } -+#endif -+ -+full_search: -+ for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { -+ /* At this point: (!vma || addr < vma->vm_end). */ -+ if (pax_task_size - len < addr) { -+ /* -+ * Start a new search - just in case we missed -+ * some holes. -+ */ -+ if (start_addr != mm->mmap_base) { -+ start_addr = addr = mm->mmap_base; -+ mm->cached_hole_size = 0; -+ goto full_search; -+ } -+ return -ENOMEM; -+ } -+ if (check_heap_stack_gap(vma, addr, len)) -+ break; -+ if (addr + mm->cached_hole_size < vma->vm_start) -+ mm->cached_hole_size = vma->vm_start - addr; -+ addr = vma->vm_end; -+ if (mm->start_brk <= addr && addr < mm->mmap_base) { -+ start_addr = addr = mm->mmap_base; -+ mm->cached_hole_size = 0; -+ goto full_search; -+ } -+ } -+ -+ /* -+ * Remember the place where we stopped the search: -+ */ -+ mm->free_area_cache = addr + len; -+ return addr; -+} -+ -+unsigned long -+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, -+ const unsigned long len, const unsigned long pgoff, -+ const unsigned long flags) - { -- long __res; -- asm volatile ("int $0x80" -- : "=a" (__res) -- : "0" (__NR_execve), "b" (filename), "c" (argv), "d" (envp) : "memory"); -- return __res; -+ struct vm_area_struct *vma; -+ struct mm_struct *mm = current->mm; -+ unsigned long base = mm->mmap_base, addr = addr0, pax_task_size = TASK_SIZE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif -+ -+ pax_task_size -= PAGE_SIZE; -+ -+ /* requested length too big for entire address space */ -+ if (len > pax_task_size) -+ return -ENOMEM; -+ -+ if (flags & MAP_FIXED) -+ return addr; -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) -+ goto bottomup; -+#endif -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ -+ /* requesting a specific address */ -+ if (addr) { -+ addr = PAGE_ALIGN(addr); -+ if (pax_task_size - len >= addr) { -+ vma = find_vma(mm, addr); -+ if (check_heap_stack_gap(vma, addr, len)) -+ return addr; -+ } -+ } -+ -+ /* check if free_area_cache is useful for us */ -+ if (len <= mm->cached_hole_size) { -+ mm->cached_hole_size = 0; -+ mm->free_area_cache = mm->mmap_base; -+ } -+ -+ /* either no address requested or can't fit in requested address hole */ -+ addr = mm->free_area_cache; -+ -+ /* make sure it can fit in the remaining address space */ -+ if (addr > len) { -+ vma = find_vma(mm, addr-len); -+ if (check_heap_stack_gap(vma, addr - len, len)) -+ /* remember the address as a hint for next time */ -+ return (mm->free_area_cache = addr-len); -+ } -+ -+ if (mm->mmap_base < len) -+ goto bottomup; -+ -+ addr = mm->mmap_base-len; -+ -+ do { -+ /* -+ * Lookup failure means no vma is above this address, -+ * else if new region fits below vma->vm_start, -+ * return with success: -+ */ -+ vma = find_vma(mm, addr); -+ if (check_heap_stack_gap(vma, addr, len)) -+ /* remember the address as a hint for next time */ -+ return (mm->free_area_cache = addr); -+ -+ /* remember the largest hole we saw so far */ -+ if (addr + mm->cached_hole_size < vma->vm_start) -+ mm->cached_hole_size = vma->vm_start - addr; -+ -+ /* try just below the current vma->vm_start */ -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); -+ -+bottomup: -+ /* -+ * A failed mmap() very likely causes application failure, -+ * so fall back to the bottom-up function here. This scenario -+ * can happen with large stack limits and large mmap() -+ * allocations. -+ */ -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; -+ else -+#endif -+ -+ mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ -+ mm->free_area_cache = mm->mmap_base; -+ mm->cached_hole_size = ~0UL; -+ addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); -+ /* -+ * Restore the topdown base: -+ */ -+ mm->mmap_base = base; -+ mm->free_area_cache = base; -+ mm->cached_hole_size = ~0UL; -+ -+ return addr; - } -diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c -index b4d3c39..82bb73b 100644 ---- a/arch/x86/kernel/sys_x86_64.c -+++ b/arch/x86/kernel/sys_x86_64.c -@@ -95,8 +95,8 @@ out: - return error; - } - --static void find_start_end(unsigned long flags, unsigned long *begin, -- unsigned long *end) -+static void find_start_end(struct mm_struct *mm, unsigned long flags, -+ unsigned long *begin, unsigned long *end) - { - if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) { - unsigned long new_begin; -@@ -115,7 +115,7 @@ static void find_start_end(unsigned long flags, unsigned long *begin, - *begin = new_begin; - } - } else { -- *begin = TASK_UNMAPPED_BASE; -+ *begin = mm->mmap_base; - *end = TASK_SIZE; - } - } -@@ -132,16 +132,19 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, - if (flags & MAP_FIXED) - return addr; - -- find_start_end(flags, &begin, &end); -+ find_start_end(mm, flags, &begin, &end); - - if (len > end) - return -ENOMEM; - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - if (addr) { - addr = PAGE_ALIGN(addr); - vma = find_vma(mm, addr); -- if (end - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (end - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - if (((flags & MAP_32BIT) || test_thread_flag(TIF_ADDR32)) -@@ -172,7 +175,7 @@ full_search: - } - return -ENOMEM; - } -- if (!vma || addr + len <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* - * Remember the place where we stopped the search: - */ -@@ -195,7 +198,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - { - struct vm_area_struct *vma; - struct mm_struct *mm = current->mm; -- unsigned long addr = addr0, start_addr; -+ unsigned long base = mm->mmap_base, addr = addr0, start_addr; - - /* requested length too big for entire address space */ - if (len > TASK_SIZE) -@@ -208,13 +211,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) - goto bottomup; - -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - /* requesting a specific address */ - if (addr) { - addr = PAGE_ALIGN(addr); -- vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -- return addr; -+ if (TASK_SIZE - len >= addr) { -+ vma = find_vma(mm, addr); -+ if (check_heap_stack_gap(vma, addr, len)) -+ return addr; -+ } - } - - /* check if free_area_cache is useful for us */ -@@ -240,7 +248,7 @@ try_again: - * return with success: - */ - vma = find_vma(mm, addr); -- if (!vma || addr+len <= vma->vm_start) -+ if (check_heap_stack_gap(vma, addr, len)) - /* remember the address as a hint for next time */ - return mm->free_area_cache = addr; - -@@ -249,8 +257,8 @@ try_again: - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = vma->vm_start-len; -- } while (len < vma->vm_start); -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); - - fail: - /* -@@ -270,13 +278,21 @@ bottomup: - * can happen with large stack limits and large mmap() - * allocations. - */ -+ mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ -+ mm->free_area_cache = mm->mmap_base; - mm->cached_hole_size = ~0UL; -- mm->free_area_cache = TASK_UNMAPPED_BASE; - addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); - /* - * Restore the topdown base: - */ -- mm->free_area_cache = mm->mmap_base; -+ mm->mmap_base = base; -+ mm->free_area_cache = base; - mm->cached_hole_size = ~0UL; - - return addr; -diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c -index f84fe00..93fe08f 100644 ---- a/arch/x86/kernel/tboot.c -+++ b/arch/x86/kernel/tboot.c -@@ -220,7 +220,7 @@ static int tboot_setup_sleep(void) - - void tboot_shutdown(u32 shutdown_type) - { -- void (*shutdown)(void); -+ void (* __noreturn shutdown)(void); - - if (!tboot_enabled()) - return; -@@ -242,7 +242,7 @@ void tboot_shutdown(u32 shutdown_type) - - switch_to_tboot_pt(); - -- shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry; -+ shutdown = (void *)tboot->shutdown_entry; - shutdown(); - - /* should not reach here */ -@@ -300,7 +300,7 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control) - return 0; - } - --static atomic_t ap_wfs_count; -+static atomic_unchecked_t ap_wfs_count; - - static int tboot_wait_for_aps(int num_aps) - { -@@ -324,9 +324,9 @@ static int __cpuinit tboot_cpu_callback(struct notifier_block *nfb, - { - switch (action) { - case CPU_DYING: -- atomic_inc(&ap_wfs_count); -+ atomic_inc_unchecked(&ap_wfs_count); - if (num_online_cpus() == 1) -- if (tboot_wait_for_aps(atomic_read(&ap_wfs_count))) -+ if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count))) - return NOTIFY_BAD; - break; - } -@@ -345,7 +345,7 @@ static __init int tboot_late_init(void) - - tboot_create_trampoline(); - -- atomic_set(&ap_wfs_count, 0); -+ atomic_set_unchecked(&ap_wfs_count, 0); - register_hotcpu_notifier(&tboot_cpu_notifier); - - acpi_os_set_prepare_sleep(&tboot_sleep); -diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c -index 24d3c91..d06b473 100644 ---- a/arch/x86/kernel/time.c -+++ b/arch/x86/kernel/time.c -@@ -30,9 +30,9 @@ unsigned long profile_pc(struct pt_regs *regs) - { - unsigned long pc = instruction_pointer(regs); - -- if (!user_mode_vm(regs) && in_lock_functions(pc)) { -+ if (!user_mode(regs) && in_lock_functions(pc)) { - #ifdef CONFIG_FRAME_POINTER -- return *(unsigned long *)(regs->bp + sizeof(long)); -+ return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long))); - #else - unsigned long *sp = - (unsigned long *)kernel_stack_pointer(regs); -@@ -41,11 +41,17 @@ unsigned long profile_pc(struct pt_regs *regs) - * or above a saved flags. Eflags has bits 22-31 zero, - * kernel addresses don't. - */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ return ktla_ktva(sp[0]); -+#else - if (sp[0] >> 22) - return sp[0]; - if (sp[1] >> 22) - return sp[1]; - #endif -+ -+#endif - } - return pc; - } -diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c -index 9d9d2f9..cad418a 100644 ---- a/arch/x86/kernel/tls.c -+++ b/arch/x86/kernel/tls.c -@@ -84,6 +84,11 @@ int do_set_thread_area(struct task_struct *p, int idx, - if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) - return -EINVAL; - -+#ifdef CONFIG_PAX_SEGMEXEC -+ if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE)) -+ return -EINVAL; -+#endif -+ - set_tls_desc(p, idx, &info, 1); - - return 0; -@@ -204,7 +209,7 @@ int regset_tls_set(struct task_struct *target, const struct user_regset *regset, - - if (kbuf) - info = kbuf; -- else if (__copy_from_user(infobuf, ubuf, count)) -+ else if (count > sizeof infobuf || __copy_from_user(infobuf, ubuf, count)) - return -EFAULT; - else - info = infobuf; -diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c -index b481341..5918bbe 100644 ---- a/arch/x86/kernel/traps.c -+++ b/arch/x86/kernel/traps.c -@@ -70,12 +70,6 @@ asmlinkage int system_call(void); - - /* Do we ignore FPU interrupts ? */ - char ignore_fpu_irq; -- --/* -- * The IDT has to be page-aligned to simplify the Pentium -- * F0 0F bug workaround. -- */ --gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, }; - #endif - - DECLARE_BITMAP(used_vectors, NR_VECTORS); -@@ -108,13 +102,13 @@ static inline void preempt_conditional_cli(struct pt_regs *regs) - } - - static void __kprobes --do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, -+do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs, - long error_code, siginfo_t *info) - { - struct task_struct *tsk = current; - - #ifdef CONFIG_X86_32 -- if (regs->flags & X86_VM_MASK) { -+ if (v8086_mode(regs)) { - /* - * traps 0, 1, 3, 4, and 5 should be forwarded to vm86. - * On nmi (interrupt 2), do_trap should not be called. -@@ -125,7 +119,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, - } - #endif - -- if (!user_mode(regs)) -+ if (!user_mode_novm(regs)) - goto kernel_trap; - - #ifdef CONFIG_X86_32 -@@ -147,7 +141,7 @@ trap_signal: - if (show_unhandled_signals && unhandled_signal(tsk, signr) && - printk_ratelimit()) { - pr_info("%s[%d] trap %s ip:%lx sp:%lx error:%lx", -- tsk->comm, tsk->pid, str, -+ tsk->comm, task_pid_nr(tsk), str, - regs->ip, regs->sp, error_code); - print_vma_addr(" in ", regs->ip); - pr_cont("\n"); -@@ -164,8 +158,20 @@ kernel_trap: - if (!fixup_exception(regs)) { - tsk->thread.error_code = error_code; - tsk->thread.trap_nr = trapnr; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ if (trapnr == 12 && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)) -+ str = "PAX: suspicious stack segment fault"; -+#endif -+ - die(str, regs, error_code); - } -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ if (trapnr == 4) -+ pax_report_refcount_overflow(regs); -+#endif -+ - return; - - #ifdef CONFIG_X86_32 -@@ -258,14 +264,30 @@ do_general_protection(struct pt_regs *regs, long error_code) - conditional_sti(regs); - - #ifdef CONFIG_X86_32 -- if (regs->flags & X86_VM_MASK) -+ if (v8086_mode(regs)) - goto gp_in_vm86; - #endif - - tsk = current; -- if (!user_mode(regs)) -+ if (!user_mode_novm(regs)) - goto gp_in_kernel; - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) -+ if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) { -+ struct mm_struct *mm = tsk->mm; -+ unsigned long limit; -+ -+ down_write(&mm->mmap_sem); -+ limit = mm->context.user_cs_limit; -+ if (limit < TASK_SIZE) { -+ track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC); -+ up_write(&mm->mmap_sem); -+ return; -+ } -+ up_write(&mm->mmap_sem); -+ } -+#endif -+ - tsk->thread.error_code = error_code; - tsk->thread.trap_nr = X86_TRAP_GP; - -@@ -297,6 +319,13 @@ gp_in_kernel: - if (notify_die(DIE_GPF, "general protection fault", regs, error_code, - X86_TRAP_GP, SIGSEGV) == NOTIFY_STOP) - return; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS) -+ die("PAX: suspicious general protection fault", regs, error_code); -+ else -+#endif -+ - die("general protection fault", regs, error_code); - } - -@@ -432,7 +461,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) - /* It's safe to allow irq's after DR6 has been saved */ - preempt_conditional_sti(regs); - -- if (regs->flags & X86_VM_MASK) { -+ if (v8086_mode(regs)) { - handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, - X86_TRAP_DB); - preempt_conditional_cli(regs); -@@ -447,7 +476,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) - * We already checked v86 mode above, so we can check for kernel mode - * by just checking the CPL of CS. - */ -- if ((dr6 & DR_STEP) && !user_mode(regs)) { -+ if ((dr6 & DR_STEP) && !user_mode_novm(regs)) { - tsk->thread.debugreg6 &= ~DR_STEP; - set_tsk_thread_flag(tsk, TIF_SINGLESTEP); - regs->flags &= ~X86_EFLAGS_TF; -@@ -478,7 +507,7 @@ void math_error(struct pt_regs *regs, int error_code, int trapnr) - return; - conditional_sti(regs); - -- if (!user_mode_vm(regs)) -+ if (!user_mode(regs)) - { - if (!fixup_exception(regs)) { - task->thread.error_code = error_code; -diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c -index 36fd420..7e5892d 100644 ---- a/arch/x86/kernel/uprobes.c -+++ b/arch/x86/kernel/uprobes.c -@@ -607,7 +607,7 @@ int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, - int ret = NOTIFY_DONE; - - /* We are only interested in userspace traps */ -- if (regs && !user_mode_vm(regs)) -+ if (regs && !user_mode(regs)) - return NOTIFY_DONE; - - switch (val) { -diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S -index b9242ba..50c5edd 100644 ---- a/arch/x86/kernel/verify_cpu.S -+++ b/arch/x86/kernel/verify_cpu.S -@@ -20,6 +20,7 @@ - * arch/x86/boot/compressed/head_64.S: Boot cpu verification - * arch/x86/kernel/trampoline_64.S: secondary processor verification - * arch/x86/kernel/head_32.S: processor startup -+ * arch/x86/kernel/acpi/realmode/wakeup.S: 32bit processor resume - * - * verify_cpu, returns the status of longmode and SSE in register %eax. - * 0: Success 1: Failure -diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c -index 54abcc0..eb6c848 100644 ---- a/arch/x86/kernel/vm86_32.c -+++ b/arch/x86/kernel/vm86_32.c -@@ -43,6 +43,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -150,7 +151,7 @@ struct pt_regs *save_v86_state(struct kernel_vm86_regs *regs) - do_exit(SIGSEGV); - } - -- tss = &per_cpu(init_tss, get_cpu()); -+ tss = init_tss + get_cpu(); - current->thread.sp0 = current->thread.saved_sp0; - current->thread.sysenter_cs = __KERNEL_CS; - load_sp0(tss, ¤t->thread); -@@ -212,6 +213,13 @@ int sys_vm86old(struct vm86_struct __user *v86, struct pt_regs *regs) - struct task_struct *tsk; - int tmp, ret = -EPERM; - -+#ifdef CONFIG_GRKERNSEC_VM86 -+ if (!capable(CAP_SYS_RAWIO)) { -+ gr_handle_vm86(); -+ goto out; -+ } -+#endif -+ - tsk = current; - if (tsk->thread.saved_sp0) - goto out; -@@ -242,6 +250,14 @@ int sys_vm86(unsigned long cmd, unsigned long arg, struct pt_regs *regs) - int tmp, ret; - struct vm86plus_struct __user *v86; - -+#ifdef CONFIG_GRKERNSEC_VM86 -+ if (!capable(CAP_SYS_RAWIO)) { -+ gr_handle_vm86(); -+ ret = -EPERM; -+ goto out; -+ } -+#endif -+ - tsk = current; - switch (cmd) { - case VM86_REQUEST_IRQ: -@@ -328,7 +344,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk - tsk->thread.saved_fs = info->regs32->fs; - tsk->thread.saved_gs = get_user_gs(info->regs32); - -- tss = &per_cpu(init_tss, get_cpu()); -+ tss = init_tss + get_cpu(); - tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0; - if (cpu_has_sep) - tsk->thread.sysenter_cs = 0; -@@ -535,7 +551,7 @@ static void do_int(struct kernel_vm86_regs *regs, int i, - goto cannot_handle; - if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored)) - goto cannot_handle; -- intr_ptr = (unsigned long __user *) (i << 2); -+ intr_ptr = (__force unsigned long __user *) (i << 2); - if (get_user(segoffs, intr_ptr)) - goto cannot_handle; - if ((segoffs >> 16) == BIOSSEG) -diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S -index 22a1530..8fbaaad 100644 ---- a/arch/x86/kernel/vmlinux.lds.S -+++ b/arch/x86/kernel/vmlinux.lds.S -@@ -26,6 +26,13 @@ - #include - #include - #include -+#include -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+#define __KERNEL_TEXT_OFFSET (LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR) -+#else -+#define __KERNEL_TEXT_OFFSET 0 -+#endif - - #undef i386 /* in case the preprocessor is a 32bit one */ - -@@ -69,30 +76,43 @@ jiffies_64 = jiffies; - - PHDRS { - text PT_LOAD FLAGS(5); /* R_E */ -+#ifdef CONFIG_X86_32 -+ module PT_LOAD FLAGS(5); /* R_E */ -+#endif -+#ifdef CONFIG_XEN -+ rodata PT_LOAD FLAGS(5); /* R_E */ -+#else -+ rodata PT_LOAD FLAGS(4); /* R__ */ -+#endif - data PT_LOAD FLAGS(6); /* RW_ */ --#ifdef CONFIG_X86_64 -+ init.begin PT_LOAD FLAGS(6); /* RW_ */ - #ifdef CONFIG_SMP - percpu PT_LOAD FLAGS(6); /* RW_ */ - #endif -+ text.init PT_LOAD FLAGS(5); /* R_E */ -+ text.exit PT_LOAD FLAGS(5); /* R_E */ - init PT_LOAD FLAGS(7); /* RWE */ --#endif - note PT_NOTE FLAGS(0); /* ___ */ - } - - SECTIONS - { - #ifdef CONFIG_X86_32 -- . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR; -- phys_startup_32 = startup_32 - LOAD_OFFSET; -+ . = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR; - #else -- . = __START_KERNEL; -- phys_startup_64 = startup_64 - LOAD_OFFSET; -+ . = __START_KERNEL; - #endif - - /* Text and read-only data */ -- .text : AT(ADDR(.text) - LOAD_OFFSET) { -- _text = .; -+ .text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { - /* bootstrapping code */ -+#ifdef CONFIG_X86_32 -+ phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; -+#else -+ phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; -+#endif -+ __LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; -+ _text = .; - HEAD_TEXT - #ifdef CONFIG_X86_32 - . = ALIGN(PAGE_SIZE); -@@ -108,13 +128,48 @@ SECTIONS - IRQENTRY_TEXT - *(.fixup) - *(.gnu.warning) -- /* End of text section */ -- _etext = .; - } :text = 0x9090 - -- NOTES :text :note -+ . += __KERNEL_TEXT_OFFSET; - -- EXCEPTION_TABLE(16) :text = 0x9090 -+#ifdef CONFIG_X86_32 -+ . = ALIGN(PAGE_SIZE); -+ .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) { -+ -+#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_MODULES) -+ MODULES_EXEC_VADDR = .; -+ BYTE(0) -+ . += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024); -+ . = ALIGN(HPAGE_SIZE) - 1; -+ MODULES_EXEC_END = .; -+#endif -+ -+ } :module -+#endif -+ -+ .text.end : AT(ADDR(.text.end) - LOAD_OFFSET) { -+ /* End of text section */ -+ BYTE(0) -+ _etext = . - __KERNEL_TEXT_OFFSET; -+ } -+ -+#ifdef CONFIG_X86_32 -+ . = ALIGN(PAGE_SIZE); -+ .rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) { -+ *(.idt) -+ . = ALIGN(PAGE_SIZE); -+ *(.empty_zero_page) -+ *(.initial_pg_fixmap) -+ *(.initial_pg_pmd) -+ *(.initial_page_table) -+ *(.swapper_pg_dir) -+ } :rodata -+#endif -+ -+ . = ALIGN(PAGE_SIZE); -+ NOTES :rodata :note -+ -+ EXCEPTION_TABLE(16) :rodata - - #if defined(CONFIG_DEBUG_RODATA) - /* .text should occupy whole number of pages */ -@@ -126,16 +181,20 @@ SECTIONS - - /* Data */ - .data : AT(ADDR(.data) - LOAD_OFFSET) { -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ . = ALIGN(HPAGE_SIZE); -+#else -+ . = ALIGN(PAGE_SIZE); -+#endif -+ - /* Start of data section */ - _sdata = .; - - /* init_task */ - INIT_TASK_DATA(THREAD_SIZE) - --#ifdef CONFIG_X86_32 -- /* 32 bit has nosave before _edata */ - NOSAVE_DATA --#endif - - PAGE_ALIGNED_DATA(PAGE_SIZE) - -@@ -176,12 +235,19 @@ SECTIONS - #endif /* CONFIG_X86_64 */ - - /* Init code and data - will be freed after init */ -- . = ALIGN(PAGE_SIZE); - .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) { -+ BYTE(0) -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ . = ALIGN(HPAGE_SIZE); -+#else -+ . = ALIGN(PAGE_SIZE); -+#endif -+ - __init_begin = .; /* paired with __init_end */ -- } -+ } :init.begin - --#if defined(CONFIG_X86_64) && defined(CONFIG_SMP) -+#ifdef CONFIG_SMP - /* - * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the - * output PHDR, so the next output section - .init.text - should -@@ -190,12 +256,27 @@ SECTIONS - PERCPU_VADDR(INTERNODE_CACHE_BYTES, 0, :percpu) - #endif - -- INIT_TEXT_SECTION(PAGE_SIZE) --#ifdef CONFIG_X86_64 -- :init --#endif -+ . = ALIGN(PAGE_SIZE); -+ init_begin = .; -+ .init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) { -+ VMLINUX_SYMBOL(_sinittext) = .; -+ INIT_TEXT -+ VMLINUX_SYMBOL(_einittext) = .; -+ . = ALIGN(PAGE_SIZE); -+ } :text.init - -- INIT_DATA_SECTION(16) -+ /* -+ * .exit.text is discard at runtime, not link time, to deal with -+ * references from .altinstructions and .eh_frame -+ */ -+ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { -+ EXIT_TEXT -+ . = ALIGN(16); -+ } :text.exit -+ . = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text); -+ -+ . = ALIGN(PAGE_SIZE); -+ INIT_DATA_SECTION(16) :init - - .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) { - __x86_cpu_dev_start = .; -@@ -257,19 +338,12 @@ SECTIONS - } - - . = ALIGN(8); -- /* -- * .exit.text is discard at runtime, not link time, to deal with -- * references from .altinstructions and .eh_frame -- */ -- .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { -- EXIT_TEXT -- } - - .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { - EXIT_DATA - } - --#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) -+#ifndef CONFIG_SMP - PERCPU_SECTION(INTERNODE_CACHE_BYTES) - #endif - -@@ -288,16 +362,10 @@ SECTIONS - .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { - __smp_locks = .; - *(.smp_locks) -- . = ALIGN(PAGE_SIZE); - __smp_locks_end = .; -+ . = ALIGN(PAGE_SIZE); - } - --#ifdef CONFIG_X86_64 -- .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { -- NOSAVE_DATA -- } --#endif -- - /* BSS */ - . = ALIGN(PAGE_SIZE); - .bss : AT(ADDR(.bss) - LOAD_OFFSET) { -@@ -313,6 +381,7 @@ SECTIONS - __brk_base = .; - . += 64 * 1024; /* 64k alignment slop space */ - *(.brk_reservation) /* areas brk users have reserved */ -+ . = ALIGN(HPAGE_SIZE); - __brk_limit = .; - } - -@@ -339,13 +408,12 @@ SECTIONS - * for the boot processor. - */ - #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load --INIT_PER_CPU(gdt_page); - INIT_PER_CPU(irq_stack_union); - - /* - * Build-time check on the image size: - */ --. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE), -+. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE), - "kernel image bigger than KERNEL_IMAGE_SIZE"); - - #ifdef CONFIG_SMP -diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c -index 992f890..fc38904 100644 ---- a/arch/x86/kernel/vsmp_64.c -+++ b/arch/x86/kernel/vsmp_64.c -@@ -217,8 +217,8 @@ static void fill_vector_allocation_domain(int cpu, struct cpumask *retmask, - static void vsmp_apic_post_init(void) - { - /* need to update phys_pkg_id */ -- apic->phys_pkg_id = apicid_phys_pkg_id; -- apic->vector_allocation_domain = fill_vector_allocation_domain; -+ *(void **)&apic->phys_pkg_id = apicid_phys_pkg_id; -+ *(void **)&apic->vector_allocation_domain = fill_vector_allocation_domain; - } - - void __init vsmp_init(void) -diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c -index 8d141b3..40a0fe4 100644 ---- a/arch/x86/kernel/vsyscall_64.c -+++ b/arch/x86/kernel/vsyscall_64.c -@@ -56,15 +56,13 @@ - DEFINE_VVAR(int, vgetcpu_mode); - DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data); - --static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE; -+static enum { EMULATE, NONE } vsyscall_mode = EMULATE; - - static int __init vsyscall_setup(char *str) - { - if (str) { - if (!strcmp("emulate", str)) - vsyscall_mode = EMULATE; -- else if (!strcmp("native", str)) -- vsyscall_mode = NATIVE; - else if (!strcmp("none", str)) - vsyscall_mode = NONE; - else -@@ -306,8 +304,7 @@ done: - return true; - - sigsegv: -- force_sig(SIGSEGV, current); -- return true; -+ do_group_exit(SIGKILL); - } - - /* -@@ -360,10 +357,7 @@ void __init map_vsyscall(void) - extern char __vvar_page; - unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page); - -- __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, -- vsyscall_mode == NATIVE -- ? PAGE_KERNEL_VSYSCALL -- : PAGE_KERNEL_VVAR); -+ __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, PAGE_KERNEL_VVAR); - BUILD_BUG_ON((unsigned long)__fix_to_virt(VSYSCALL_FIRST_PAGE) != - (unsigned long)VSYSCALL_START); - -diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c -index 6020f6f..bedd6e3 100644 ---- a/arch/x86/kernel/x8664_ksyms_64.c -+++ b/arch/x86/kernel/x8664_ksyms_64.c -@@ -30,8 +30,6 @@ EXPORT_SYMBOL(copy_user_generic_string); - EXPORT_SYMBOL(copy_user_generic_unrolled); - EXPORT_SYMBOL(copy_user_enhanced_fast_string); - EXPORT_SYMBOL(__copy_user_nocache); --EXPORT_SYMBOL(_copy_from_user); --EXPORT_SYMBOL(_copy_to_user); - - EXPORT_SYMBOL(copy_page); - EXPORT_SYMBOL(clear_page); -diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c -index 3d3e207..316a7e0 100644 ---- a/arch/x86/kernel/xsave.c -+++ b/arch/x86/kernel/xsave.c -@@ -132,7 +132,7 @@ int check_for_xstate(struct i387_fxsave_struct __user *buf, - fx_sw_user->xstate_size > fx_sw_user->extended_size) - return -EINVAL; - -- err = __get_user(magic2, (__u32 *) (((void *)fpstate) + -+ err = __get_user(magic2, (__u32 __user *) (((void __user *)fpstate) + - fx_sw_user->extended_size - - FP_XSTATE_MAGIC2_SIZE)); - if (err) -@@ -268,7 +268,7 @@ fx_only: - * the other extended state. - */ - xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE); -- return fxrstor_checking((__force struct i387_fxsave_struct *)buf); -+ return fxrstor_checking((struct i387_fxsave_struct __user *)buf); - } - - /* -@@ -297,8 +297,7 @@ int restore_i387_xstate(void __user *buf) - if (use_xsave()) - err = restore_user_xstate(buf); - else -- err = fxrstor_checking((__force struct i387_fxsave_struct *) -- buf); -+ err = fxrstor_checking((struct i387_fxsave_struct __user *)buf); - if (unlikely(err)) { - /* - * Encountered an error while doing the restore from the -diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c -index 0595f13..b544fa3 100644 ---- a/arch/x86/kvm/cpuid.c -+++ b/arch/x86/kvm/cpuid.c -@@ -124,15 +124,20 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu, - struct kvm_cpuid2 *cpuid, - struct kvm_cpuid_entry2 __user *entries) - { -- int r; -+ int r, i; - - r = -E2BIG; - if (cpuid->nent > KVM_MAX_CPUID_ENTRIES) - goto out; - r = -EFAULT; -- if (copy_from_user(&vcpu->arch.cpuid_entries, entries, -- cpuid->nent * sizeof(struct kvm_cpuid_entry2))) -+ if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2))) - goto out; -+ for (i = 0; i < cpuid->nent; ++i) { -+ struct kvm_cpuid_entry2 cpuid_entry; -+ if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry))) -+ goto out; -+ vcpu->arch.cpuid_entries[i] = cpuid_entry; -+ } - vcpu->arch.cpuid_nent = cpuid->nent; - kvm_apic_set_version(vcpu); - kvm_x86_ops->cpuid_update(vcpu); -@@ -147,15 +152,19 @@ int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu, - struct kvm_cpuid2 *cpuid, - struct kvm_cpuid_entry2 __user *entries) - { -- int r; -+ int r, i; - - r = -E2BIG; - if (cpuid->nent < vcpu->arch.cpuid_nent) - goto out; - r = -EFAULT; -- if (copy_to_user(entries, &vcpu->arch.cpuid_entries, -- vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) -+ if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) - goto out; -+ for (i = 0; i < vcpu->arch.cpuid_nent; ++i) { -+ struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i]; -+ if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry))) -+ goto out; -+ } - return 0; - - out: -diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c -index a3b57a2..e8f3324 100644 ---- a/arch/x86/kvm/emulate.c -+++ b/arch/x86/kvm/emulate.c -@@ -256,6 +256,7 @@ struct gprefix { - - #define ____emulate_2op(ctxt, _op, _x, _y, _suffix, _dsttype) \ - do { \ -+ unsigned long _tmp; \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "4", "2") \ - _op _suffix " %"_x"3,%1; " \ -@@ -270,8 +271,6 @@ struct gprefix { - /* Raw emulation: instruction has two explicit operands. */ - #define __emulate_2op_nobyte(ctxt,_op,_wx,_wy,_lx,_ly,_qx,_qy) \ - do { \ -- unsigned long _tmp; \ -- \ - switch ((ctxt)->dst.bytes) { \ - case 2: \ - ____emulate_2op(ctxt,_op,_wx,_wy,"w",u16); \ -@@ -287,7 +286,6 @@ struct gprefix { - - #define __emulate_2op(ctxt,_op,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \ - do { \ -- unsigned long _tmp; \ - switch ((ctxt)->dst.bytes) { \ - case 1: \ - ____emulate_2op(ctxt,_op,_bx,_by,"b",u8); \ -@@ -390,8 +388,7 @@ struct gprefix { - _ASM_EXTABLE(1b, 3b) \ - : "=m" ((ctxt)->eflags), "=&r" (_tmp), \ - "+a" (*rax), "+d" (*rdx), "+qm"(_ex) \ -- : "i" (EFLAGS_MASK), "m" ((ctxt)->src.val), \ -- "a" (*rax), "d" (*rdx)); \ -+ : "i" (EFLAGS_MASK), "m" ((ctxt)->src.val)); \ - } while (0) - - /* instruction has only one source operand, destination is implicit (e.g. mul, div, imul, idiv) */ -diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c -index ce87878..ab48aa3 100644 ---- a/arch/x86/kvm/lapic.c -+++ b/arch/x86/kvm/lapic.c -@@ -54,7 +54,7 @@ - #define APIC_BUS_CYCLE_NS 1 - - /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */ --#define apic_debug(fmt, arg...) -+#define apic_debug(fmt, arg...) do {} while (0) - - #define APIC_LVT_NUM 6 - /* 14 is the version for Xeon and Pentium 8.4.8*/ -diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h -index bb7cf01..0348a05 100644 ---- a/arch/x86/kvm/paging_tmpl.h -+++ b/arch/x86/kvm/paging_tmpl.h -@@ -196,7 +196,7 @@ retry_walk: - if (unlikely(kvm_is_error_hva(host_addr))) - goto error; - -- ptep_user = (pt_element_t __user *)((void *)host_addr + offset); -+ ptep_user = (pt_element_t __force_user *)((void *)host_addr + offset); - if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte)))) - goto error; - -diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c -index baead95..90feeb4 100644 ---- a/arch/x86/kvm/svm.c -+++ b/arch/x86/kvm/svm.c -@@ -3516,7 +3516,11 @@ static void reload_tss(struct kvm_vcpu *vcpu) - int cpu = raw_smp_processor_id(); - - struct svm_cpu_data *sd = per_cpu(svm_data, cpu); -+ -+ pax_open_kernel(); - sd->tss_desc->type = 9; /* available 32/64-bit TSS */ -+ pax_close_kernel(); -+ - load_TR_desc(); - } - -@@ -3894,6 +3898,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) - #endif - #endif - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ __set_fs(current_thread_info()->addr_limit); -+#endif -+ - reload_tss(vcpu); - - local_irq_disable(); -diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c -index ff66a3b..48ad872 100644 ---- a/arch/x86/kvm/vmx.c -+++ b/arch/x86/kvm/vmx.c -@@ -1331,7 +1331,11 @@ static void reload_tss(void) - struct desc_struct *descs; - - descs = (void *)gdt->address; -+ -+ pax_open_kernel(); - descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ -+ pax_close_kernel(); -+ - load_TR_desc(); - } - -@@ -1541,6 +1545,10 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) - vmcs_writel(HOST_TR_BASE, kvm_read_tr_base()); /* 22.2.4 */ - vmcs_writel(HOST_GDTR_BASE, gdt->address); /* 22.2.4 */ - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */ -+#endif -+ - rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp); - vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */ - vmx->loaded_vmcs->cpu = cpu; -@@ -2674,8 +2682,11 @@ static __init int hardware_setup(void) - if (!cpu_has_vmx_flexpriority()) - flexpriority_enabled = 0; - -- if (!cpu_has_vmx_tpr_shadow()) -- kvm_x86_ops->update_cr8_intercept = NULL; -+ if (!cpu_has_vmx_tpr_shadow()) { -+ pax_open_kernel(); -+ *(void **)&kvm_x86_ops->update_cr8_intercept = NULL; -+ pax_close_kernel(); -+ } - - if (enable_ept && !cpu_has_vmx_ept_2m_page()) - kvm_disable_largepages(); -@@ -3745,7 +3756,10 @@ static void vmx_set_constant_host_state(void) - - vmcs_writel(HOST_CR0, read_cr0() | X86_CR0_TS); /* 22.2.3 */ - vmcs_writel(HOST_CR4, read_cr4()); /* 22.2.3, 22.2.5 */ -+ -+#ifndef CONFIG_PAX_PER_CPU_PGD - vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */ -+#endif - - vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */ - #ifdef CONFIG_X86_64 -@@ -3767,7 +3781,7 @@ static void vmx_set_constant_host_state(void) - vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */ - - asm("mov $.Lkvm_vmx_return, %0" : "=r"(tmpl)); -- vmcs_writel(HOST_RIP, tmpl); /* 22.2.5 */ -+ vmcs_writel(HOST_RIP, ktla_ktva(tmpl)); /* 22.2.5 */ - - rdmsr(MSR_IA32_SYSENTER_CS, low32, high32); - vmcs_write32(HOST_IA32_SYSENTER_CS, low32); -@@ -6321,6 +6335,12 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) - "jmp .Lkvm_vmx_return \n\t" - ".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t" - ".Lkvm_vmx_return: " -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ "ljmp %[cs],$.Lkvm_vmx_return2\n\t" -+ ".Lkvm_vmx_return2: " -+#endif -+ - /* Save guest registers, load host registers, keep flags */ - "mov %0, %c[wordsize](%%"R"sp) \n\t" - "pop %0 \n\t" -@@ -6369,6 +6389,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) - #endif - [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)), - [wordsize]"i"(sizeof(ulong)) -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ ,[cs]"i"(__KERNEL_CS) -+#endif -+ - : "cc", "memory" - , R"ax", R"bx", R"di", R"si" - #ifdef CONFIG_X86_64 -@@ -6376,7 +6401,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) - #endif - ); - --#ifndef CONFIG_X86_64 -+#ifdef CONFIG_X86_32 - /* - * The sysexit path does not restore ds/es, so we must set them to - * a reasonable value ourselves. -@@ -6385,8 +6410,18 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) - * may be executed in interrupt context, which saves and restore segments - * around it, nullifying its effect. - */ -- loadsegment(ds, __USER_DS); -- loadsegment(es, __USER_DS); -+ loadsegment(ds, __KERNEL_DS); -+ loadsegment(es, __KERNEL_DS); -+ loadsegment(ss, __KERNEL_DS); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ loadsegment(fs, __KERNEL_PERCPU); -+#endif -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ __set_fs(current_thread_info()->addr_limit); -+#endif -+ - #endif - - vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP) -diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c -index a201790..9ac0c3c 100644 ---- a/arch/x86/kvm/x86.c -+++ b/arch/x86/kvm/x86.c -@@ -1379,8 +1379,8 @@ static int xen_hvm_config(struct kvm_vcpu *vcpu, u64 data) - { - struct kvm *kvm = vcpu->kvm; - int lm = is_long_mode(vcpu); -- u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64 -- : (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32; -+ u8 __user *blob_addr = lm ? (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_64 -+ : (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_32; - u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64 - : kvm->arch.xen_hvm_config.blob_size_32; - u32 page_num = data & ~PAGE_MASK; -@@ -2243,6 +2243,8 @@ long kvm_arch_dev_ioctl(struct file *filp, - if (n < msr_list.nmsrs) - goto out; - r = -EFAULT; -+ if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save)) -+ goto out; - if (copy_to_user(user_msr_list->indices, &msrs_to_save, - num_msrs_to_save * sizeof(u32))) - goto out; -@@ -2368,7 +2370,7 @@ static int kvm_vcpu_ioctl_set_lapic(struct kvm_vcpu *vcpu, - static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, - struct kvm_interrupt *irq) - { -- if (irq->irq < 0 || irq->irq >= 256) -+ if (irq->irq >= 256) - return -EINVAL; - if (irqchip_in_kernel(vcpu->kvm)) - return -ENXIO; -@@ -4889,7 +4891,7 @@ static void kvm_set_mmio_spte_mask(void) - kvm_mmu_set_mmio_spte_mask(mask); - } - --int kvm_arch_init(void *opaque) -+int kvm_arch_init(const void *opaque) - { - int r; - struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque; -diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c -index 642d880..cc9ebac 100644 ---- a/arch/x86/lguest/boot.c -+++ b/arch/x86/lguest/boot.c -@@ -1116,12 +1116,12 @@ static u32 lguest_apic_safe_wait_icr_idle(void) - - static void set_lguest_basic_apic_ops(void) - { -- apic->read = lguest_apic_read; -- apic->write = lguest_apic_write; -- apic->icr_read = lguest_apic_icr_read; -- apic->icr_write = lguest_apic_icr_write; -- apic->wait_icr_idle = lguest_apic_wait_icr_idle; -- apic->safe_wait_icr_idle = lguest_apic_safe_wait_icr_idle; -+ *(void **)&apic->read = lguest_apic_read; -+ *(void **)&apic->write = lguest_apic_write; -+ *(void **)&apic->icr_read = lguest_apic_icr_read; -+ *(void **)&apic->icr_write = lguest_apic_icr_write; -+ *(void **)&apic->wait_icr_idle = lguest_apic_wait_icr_idle; -+ *(void **)&apic->safe_wait_icr_idle = lguest_apic_safe_wait_icr_idle; - }; - #endif - -@@ -1200,9 +1200,10 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count) - * Rebooting also tells the Host we're finished, but the RESTART flag tells the - * Launcher to reboot us. - */ --static void lguest_restart(char *reason) -+static __noreturn void lguest_restart(char *reason) - { - hcall(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART, 0, 0); -+ BUG(); - } - - /*G:050 -diff --git a/arch/x86/lib/atomic64_386_32.S b/arch/x86/lib/atomic64_386_32.S -index 00933d5..3a64af9 100644 ---- a/arch/x86/lib/atomic64_386_32.S -+++ b/arch/x86/lib/atomic64_386_32.S -@@ -48,6 +48,10 @@ BEGIN(read) - movl (v), %eax - movl 4(v), %edx - RET_ENDP -+BEGIN(read_unchecked) -+ movl (v), %eax -+ movl 4(v), %edx -+RET_ENDP - #undef v - - #define v %esi -@@ -55,6 +59,10 @@ BEGIN(set) - movl %ebx, (v) - movl %ecx, 4(v) - RET_ENDP -+BEGIN(set_unchecked) -+ movl %ebx, (v) -+ movl %ecx, 4(v) -+RET_ENDP - #undef v - - #define v %esi -@@ -70,6 +78,20 @@ RET_ENDP - BEGIN(add) - addl %eax, (v) - adcl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 0f -+ subl %eax, (v) -+ sbbl %edx, 4(v) -+ int $4 -+0: -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+RET_ENDP -+BEGIN(add_unchecked) -+ addl %eax, (v) -+ adcl %edx, 4(v) - RET_ENDP - #undef v - -@@ -77,6 +99,24 @@ RET_ENDP - BEGIN(add_return) - addl (v), %eax - adcl 4(v), %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ -+ movl %eax, (v) -+ movl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+2: -+#endif -+ -+RET_ENDP -+BEGIN(add_return_unchecked) -+ addl (v), %eax -+ adcl 4(v), %edx - movl %eax, (v) - movl %edx, 4(v) - RET_ENDP -@@ -86,6 +126,20 @@ RET_ENDP - BEGIN(sub) - subl %eax, (v) - sbbl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 0f -+ addl %eax, (v) -+ adcl %edx, 4(v) -+ int $4 -+0: -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+RET_ENDP -+BEGIN(sub_unchecked) -+ subl %eax, (v) -+ sbbl %edx, 4(v) - RET_ENDP - #undef v - -@@ -96,6 +150,27 @@ BEGIN(sub_return) - sbbl $0, %edx - addl (v), %eax - adcl 4(v), %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ -+ movl %eax, (v) -+ movl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+2: -+#endif -+ -+RET_ENDP -+BEGIN(sub_return_unchecked) -+ negl %edx -+ negl %eax -+ sbbl $0, %edx -+ addl (v), %eax -+ adcl 4(v), %edx - movl %eax, (v) - movl %edx, 4(v) - RET_ENDP -@@ -105,6 +180,20 @@ RET_ENDP - BEGIN(inc) - addl $1, (v) - adcl $0, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 0f -+ subl $1, (v) -+ sbbl $0, 4(v) -+ int $4 -+0: -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+RET_ENDP -+BEGIN(inc_unchecked) -+ addl $1, (v) -+ adcl $0, 4(v) - RET_ENDP - #undef v - -@@ -114,6 +203,26 @@ BEGIN(inc_return) - movl 4(v), %edx - addl $1, %eax - adcl $0, %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ -+ movl %eax, (v) -+ movl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+2: -+#endif -+ -+RET_ENDP -+BEGIN(inc_return_unchecked) -+ movl (v), %eax -+ movl 4(v), %edx -+ addl $1, %eax -+ adcl $0, %edx - movl %eax, (v) - movl %edx, 4(v) - RET_ENDP -@@ -123,6 +232,20 @@ RET_ENDP - BEGIN(dec) - subl $1, (v) - sbbl $0, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 0f -+ addl $1, (v) -+ adcl $0, 4(v) -+ int $4 -+0: -+ _ASM_EXTABLE(0b, 0b) -+#endif -+ -+RET_ENDP -+BEGIN(dec_unchecked) -+ subl $1, (v) -+ sbbl $0, 4(v) - RET_ENDP - #undef v - -@@ -132,6 +255,26 @@ BEGIN(dec_return) - movl 4(v), %edx - subl $1, %eax - sbbl $0, %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ -+ movl %eax, (v) -+ movl %edx, 4(v) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+2: -+#endif -+ -+RET_ENDP -+BEGIN(dec_return_unchecked) -+ movl (v), %eax -+ movl 4(v), %edx -+ subl $1, %eax -+ sbbl $0, %edx - movl %eax, (v) - movl %edx, 4(v) - RET_ENDP -@@ -143,6 +286,13 @@ BEGIN(add_unless) - adcl %edx, %edi - addl (v), %eax - adcl 4(v), %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ - cmpl %eax, %ecx - je 3f - 1: -@@ -168,6 +318,13 @@ BEGIN(inc_not_zero) - 1: - addl $1, %eax - adcl $0, %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ - movl %eax, (v) - movl %edx, 4(v) - movl $1, %eax -@@ -186,6 +343,13 @@ BEGIN(dec_if_positive) - movl 4(v), %edx - subl $1, %eax - sbbl $0, %edx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 1f) -+#endif -+ - js 1f - movl %eax, (v) - movl %edx, 4(v) -diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S -index f5cc9eb..51fa319 100644 ---- a/arch/x86/lib/atomic64_cx8_32.S -+++ b/arch/x86/lib/atomic64_cx8_32.S -@@ -35,10 +35,20 @@ ENTRY(atomic64_read_cx8) - CFI_STARTPROC - - read64 %ecx -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(atomic64_read_cx8) - -+ENTRY(atomic64_read_unchecked_cx8) -+ CFI_STARTPROC -+ -+ read64 %ecx -+ pax_force_retaddr -+ ret -+ CFI_ENDPROC -+ENDPROC(atomic64_read_unchecked_cx8) -+ - ENTRY(atomic64_set_cx8) - CFI_STARTPROC - -@@ -48,10 +58,25 @@ ENTRY(atomic64_set_cx8) - cmpxchg8b (%esi) - jne 1b - -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(atomic64_set_cx8) - -+ENTRY(atomic64_set_unchecked_cx8) -+ CFI_STARTPROC -+ -+1: -+/* we don't need LOCK_PREFIX since aligned 64-bit writes -+ * are atomic on 586 and newer */ -+ cmpxchg8b (%esi) -+ jne 1b -+ -+ pax_force_retaddr -+ ret -+ CFI_ENDPROC -+ENDPROC(atomic64_set_unchecked_cx8) -+ - ENTRY(atomic64_xchg_cx8) - CFI_STARTPROC - -@@ -60,12 +85,13 @@ ENTRY(atomic64_xchg_cx8) - cmpxchg8b (%esi) - jne 1b - -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(atomic64_xchg_cx8) - --.macro addsub_return func ins insc --ENTRY(atomic64_\func\()_return_cx8) -+.macro addsub_return func ins insc unchecked="" -+ENTRY(atomic64_\func\()_return\unchecked\()_cx8) - CFI_STARTPROC - SAVE ebp - SAVE ebx -@@ -82,27 +108,44 @@ ENTRY(atomic64_\func\()_return_cx8) - movl %edx, %ecx - \ins\()l %esi, %ebx - \insc\()l %edi, %ecx -+ -+.ifb \unchecked -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+2: -+ _ASM_EXTABLE(2b, 3f) -+#endif -+.endif -+ - LOCK_PREFIX - cmpxchg8b (%ebp) - jne 1b -- --10: - movl %ebx, %eax - movl %ecx, %edx -+ -+.ifb \unchecked -+#ifdef CONFIG_PAX_REFCOUNT -+3: -+#endif -+.endif -+ - RESTORE edi - RESTORE esi - RESTORE ebx - RESTORE ebp -+ pax_force_retaddr - ret - CFI_ENDPROC --ENDPROC(atomic64_\func\()_return_cx8) -+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8) - .endm - - addsub_return add add adc - addsub_return sub sub sbb -+addsub_return add add adc _unchecked -+addsub_return sub sub sbb _unchecked - --.macro incdec_return func ins insc --ENTRY(atomic64_\func\()_return_cx8) -+.macro incdec_return func ins insc unchecked="" -+ENTRY(atomic64_\func\()_return\unchecked\()_cx8) - CFI_STARTPROC - SAVE ebx - -@@ -112,21 +155,39 @@ ENTRY(atomic64_\func\()_return_cx8) - movl %edx, %ecx - \ins\()l $1, %ebx - \insc\()l $0, %ecx -+ -+.ifb \unchecked -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+2: -+ _ASM_EXTABLE(2b, 3f) -+#endif -+.endif -+ - LOCK_PREFIX - cmpxchg8b (%esi) - jne 1b - --10: - movl %ebx, %eax - movl %ecx, %edx -+ -+.ifb \unchecked -+#ifdef CONFIG_PAX_REFCOUNT -+3: -+#endif -+.endif -+ - RESTORE ebx -+ pax_force_retaddr - ret - CFI_ENDPROC --ENDPROC(atomic64_\func\()_return_cx8) -+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8) - .endm - - incdec_return inc add adc - incdec_return dec sub sbb -+incdec_return inc add adc _unchecked -+incdec_return dec sub sbb _unchecked - - ENTRY(atomic64_dec_if_positive_cx8) - CFI_STARTPROC -@@ -138,6 +199,13 @@ ENTRY(atomic64_dec_if_positive_cx8) - movl %edx, %ecx - subl $1, %ebx - sbb $0, %ecx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 2f) -+#endif -+ - js 2f - LOCK_PREFIX - cmpxchg8b (%esi) -@@ -147,6 +215,7 @@ ENTRY(atomic64_dec_if_positive_cx8) - movl %ebx, %eax - movl %ecx, %edx - RESTORE ebx -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(atomic64_dec_if_positive_cx8) -@@ -171,6 +240,13 @@ ENTRY(atomic64_add_unless_cx8) - movl %edx, %ecx - addl %ebp, %ebx - adcl %edi, %ecx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 3f) -+#endif -+ - LOCK_PREFIX - cmpxchg8b (%esi) - jne 1b -@@ -181,6 +257,7 @@ ENTRY(atomic64_add_unless_cx8) - CFI_ADJUST_CFA_OFFSET -8 - RESTORE ebx - RESTORE ebp -+ pax_force_retaddr - ret - 4: - cmpl %edx, 4(%esp) -@@ -203,6 +280,13 @@ ENTRY(atomic64_inc_not_zero_cx8) - xorl %ecx, %ecx - addl $1, %ebx - adcl %edx, %ecx -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ into -+1234: -+ _ASM_EXTABLE(1234b, 3f) -+#endif -+ - LOCK_PREFIX - cmpxchg8b (%esi) - jne 1b -@@ -210,6 +294,7 @@ ENTRY(atomic64_inc_not_zero_cx8) - movl $1, %eax - 3: - RESTORE ebx -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(atomic64_inc_not_zero_cx8) -diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S -index 2af5df3..62b1a5a 100644 ---- a/arch/x86/lib/checksum_32.S -+++ b/arch/x86/lib/checksum_32.S -@@ -29,7 +29,8 @@ - #include - #include - #include -- -+#include -+ - /* - * computes a partial checksum, e.g. for TCP/UDP fragments - */ -@@ -293,9 +294,24 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst, - - #define ARGBASE 16 - #define FP 12 -- --ENTRY(csum_partial_copy_generic) -+ -+ENTRY(csum_partial_copy_generic_to_user) - CFI_STARTPROC -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pushl_cfi %gs -+ popl_cfi %es -+ jmp csum_partial_copy_generic -+#endif -+ -+ENTRY(csum_partial_copy_generic_from_user) -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pushl_cfi %gs -+ popl_cfi %ds -+#endif -+ -+ENTRY(csum_partial_copy_generic) - subl $4,%esp - CFI_ADJUST_CFA_OFFSET 4 - pushl_cfi %edi -@@ -317,7 +333,7 @@ ENTRY(csum_partial_copy_generic) - jmp 4f - SRC(1: movw (%esi), %bx ) - addl $2, %esi --DST( movw %bx, (%edi) ) -+DST( movw %bx, %es:(%edi) ) - addl $2, %edi - addw %bx, %ax - adcl $0, %eax -@@ -329,30 +345,30 @@ DST( movw %bx, (%edi) ) - SRC(1: movl (%esi), %ebx ) - SRC( movl 4(%esi), %edx ) - adcl %ebx, %eax --DST( movl %ebx, (%edi) ) -+DST( movl %ebx, %es:(%edi) ) - adcl %edx, %eax --DST( movl %edx, 4(%edi) ) -+DST( movl %edx, %es:4(%edi) ) - - SRC( movl 8(%esi), %ebx ) - SRC( movl 12(%esi), %edx ) - adcl %ebx, %eax --DST( movl %ebx, 8(%edi) ) -+DST( movl %ebx, %es:8(%edi) ) - adcl %edx, %eax --DST( movl %edx, 12(%edi) ) -+DST( movl %edx, %es:12(%edi) ) - - SRC( movl 16(%esi), %ebx ) - SRC( movl 20(%esi), %edx ) - adcl %ebx, %eax --DST( movl %ebx, 16(%edi) ) -+DST( movl %ebx, %es:16(%edi) ) - adcl %edx, %eax --DST( movl %edx, 20(%edi) ) -+DST( movl %edx, %es:20(%edi) ) - - SRC( movl 24(%esi), %ebx ) - SRC( movl 28(%esi), %edx ) - adcl %ebx, %eax --DST( movl %ebx, 24(%edi) ) -+DST( movl %ebx, %es:24(%edi) ) - adcl %edx, %eax --DST( movl %edx, 28(%edi) ) -+DST( movl %edx, %es:28(%edi) ) - - lea 32(%esi), %esi - lea 32(%edi), %edi -@@ -366,7 +382,7 @@ DST( movl %edx, 28(%edi) ) - shrl $2, %edx # This clears CF - SRC(3: movl (%esi), %ebx ) - adcl %ebx, %eax --DST( movl %ebx, (%edi) ) -+DST( movl %ebx, %es:(%edi) ) - lea 4(%esi), %esi - lea 4(%edi), %edi - dec %edx -@@ -378,12 +394,12 @@ DST( movl %ebx, (%edi) ) - jb 5f - SRC( movw (%esi), %cx ) - leal 2(%esi), %esi --DST( movw %cx, (%edi) ) -+DST( movw %cx, %es:(%edi) ) - leal 2(%edi), %edi - je 6f - shll $16,%ecx - SRC(5: movb (%esi), %cl ) --DST( movb %cl, (%edi) ) -+DST( movb %cl, %es:(%edi) ) - 6: addl %ecx, %eax - adcl $0, %eax - 7: -@@ -394,7 +410,7 @@ DST( movb %cl, (%edi) ) - - 6001: - movl ARGBASE+20(%esp), %ebx # src_err_ptr -- movl $-EFAULT, (%ebx) -+ movl $-EFAULT, %ss:(%ebx) - - # zero the complete destination - computing the rest - # is too much work -@@ -407,11 +423,15 @@ DST( movb %cl, (%edi) ) - - 6002: - movl ARGBASE+24(%esp), %ebx # dst_err_ptr -- movl $-EFAULT,(%ebx) -+ movl $-EFAULT,%ss:(%ebx) - jmp 5000b - - .previous - -+ pushl_cfi %ss -+ popl_cfi %ds -+ pushl_cfi %ss -+ popl_cfi %es - popl_cfi %ebx - CFI_RESTORE ebx - popl_cfi %esi -@@ -421,26 +441,43 @@ DST( movb %cl, (%edi) ) - popl_cfi %ecx # equivalent to addl $4,%esp - ret - CFI_ENDPROC --ENDPROC(csum_partial_copy_generic) -+ENDPROC(csum_partial_copy_generic_to_user) - - #else - - /* Version for PentiumII/PPro */ - - #define ROUND1(x) \ -+ nop; nop; nop; \ - SRC(movl x(%esi), %ebx ) ; \ - addl %ebx, %eax ; \ -- DST(movl %ebx, x(%edi) ) ; -+ DST(movl %ebx, %es:x(%edi)) ; - - #define ROUND(x) \ -+ nop; nop; nop; \ - SRC(movl x(%esi), %ebx ) ; \ - adcl %ebx, %eax ; \ -- DST(movl %ebx, x(%edi) ) ; -+ DST(movl %ebx, %es:x(%edi)) ; - - #define ARGBASE 12 -- --ENTRY(csum_partial_copy_generic) -+ -+ENTRY(csum_partial_copy_generic_to_user) - CFI_STARTPROC -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pushl_cfi %gs -+ popl_cfi %es -+ jmp csum_partial_copy_generic -+#endif -+ -+ENTRY(csum_partial_copy_generic_from_user) -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pushl_cfi %gs -+ popl_cfi %ds -+#endif -+ -+ENTRY(csum_partial_copy_generic) - pushl_cfi %ebx - CFI_REL_OFFSET ebx, 0 - pushl_cfi %edi -@@ -461,7 +498,7 @@ ENTRY(csum_partial_copy_generic) - subl %ebx, %edi - lea -1(%esi),%edx - andl $-32,%edx -- lea 3f(%ebx,%ebx), %ebx -+ lea 3f(%ebx,%ebx,2), %ebx - testl %esi, %esi - jmp *%ebx - 1: addl $64,%esi -@@ -482,19 +519,19 @@ ENTRY(csum_partial_copy_generic) - jb 5f - SRC( movw (%esi), %dx ) - leal 2(%esi), %esi --DST( movw %dx, (%edi) ) -+DST( movw %dx, %es:(%edi) ) - leal 2(%edi), %edi - je 6f - shll $16,%edx - 5: - SRC( movb (%esi), %dl ) --DST( movb %dl, (%edi) ) -+DST( movb %dl, %es:(%edi) ) - 6: addl %edx, %eax - adcl $0, %eax - 7: - .section .fixup, "ax" - 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr -- movl $-EFAULT, (%ebx) -+ movl $-EFAULT, %ss:(%ebx) - # zero the complete destination (computing the rest is too much work) - movl ARGBASE+8(%esp),%edi # dst - movl ARGBASE+12(%esp),%ecx # len -@@ -502,10 +539,17 @@ DST( movb %dl, (%edi) ) - rep; stosb - jmp 7b - 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr -- movl $-EFAULT, (%ebx) -+ movl $-EFAULT, %ss:(%ebx) - jmp 7b - .previous - -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ pushl_cfi %ss -+ popl_cfi %ds -+ pushl_cfi %ss -+ popl_cfi %es -+#endif -+ - popl_cfi %esi - CFI_RESTORE esi - popl_cfi %edi -@@ -514,7 +558,7 @@ DST( movb %dl, (%edi) ) - CFI_RESTORE ebx - ret - CFI_ENDPROC --ENDPROC(csum_partial_copy_generic) -+ENDPROC(csum_partial_copy_generic_to_user) - - #undef ROUND - #undef ROUND1 -diff --git a/arch/x86/lib/clear_page_64.S b/arch/x86/lib/clear_page_64.S -index f2145cf..cea889d 100644 ---- a/arch/x86/lib/clear_page_64.S -+++ b/arch/x86/lib/clear_page_64.S -@@ -11,6 +11,7 @@ ENTRY(clear_page_c) - movl $4096/8,%ecx - xorl %eax,%eax - rep stosq -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(clear_page_c) -@@ -20,6 +21,7 @@ ENTRY(clear_page_c_e) - movl $4096,%ecx - xorl %eax,%eax - rep stosb -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(clear_page_c_e) -@@ -43,6 +45,7 @@ ENTRY(clear_page) - leaq 64(%rdi),%rdi - jnz .Lloop - nop -+ pax_force_retaddr - ret - CFI_ENDPROC - .Lclear_page_end: -@@ -58,7 +61,7 @@ ENDPROC(clear_page) - - #include - -- .section .altinstr_replacement,"ax" -+ .section .altinstr_replacement,"a" - 1: .byte 0xeb /* jmp */ - .byte (clear_page_c - clear_page) - (2f - 1b) /* offset */ - 2: .byte 0xeb /* jmp */ -diff --git a/arch/x86/lib/cmpxchg16b_emu.S b/arch/x86/lib/cmpxchg16b_emu.S -index 1e572c5..2a162cd 100644 ---- a/arch/x86/lib/cmpxchg16b_emu.S -+++ b/arch/x86/lib/cmpxchg16b_emu.S -@@ -53,11 +53,13 @@ this_cpu_cmpxchg16b_emu: - - popf - mov $1, %al -+ pax_force_retaddr - ret - - not_same: - popf - xor %al,%al -+ pax_force_retaddr - ret - - CFI_ENDPROC -diff --git a/arch/x86/lib/copy_page_64.S b/arch/x86/lib/copy_page_64.S -index 6b34d04..dccb07f 100644 ---- a/arch/x86/lib/copy_page_64.S -+++ b/arch/x86/lib/copy_page_64.S -@@ -9,6 +9,7 @@ copy_page_c: - CFI_STARTPROC - movl $4096/8,%ecx - rep movsq -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(copy_page_c) -@@ -20,12 +21,14 @@ ENDPROC(copy_page_c) - - ENTRY(copy_page) - CFI_STARTPROC -- subq $2*8,%rsp -- CFI_ADJUST_CFA_OFFSET 2*8 -+ subq $3*8,%rsp -+ CFI_ADJUST_CFA_OFFSET 3*8 - movq %rbx,(%rsp) - CFI_REL_OFFSET rbx, 0 - movq %r12,1*8(%rsp) - CFI_REL_OFFSET r12, 1*8 -+ movq %r13,2*8(%rsp) -+ CFI_REL_OFFSET r13, 2*8 - - movl $(4096/64)-5,%ecx - .p2align 4 -@@ -37,7 +40,7 @@ ENTRY(copy_page) - movq 16 (%rsi), %rdx - movq 24 (%rsi), %r8 - movq 32 (%rsi), %r9 -- movq 40 (%rsi), %r10 -+ movq 40 (%rsi), %r13 - movq 48 (%rsi), %r11 - movq 56 (%rsi), %r12 - -@@ -48,7 +51,7 @@ ENTRY(copy_page) - movq %rdx, 16 (%rdi) - movq %r8, 24 (%rdi) - movq %r9, 32 (%rdi) -- movq %r10, 40 (%rdi) -+ movq %r13, 40 (%rdi) - movq %r11, 48 (%rdi) - movq %r12, 56 (%rdi) - -@@ -67,7 +70,7 @@ ENTRY(copy_page) - movq 16 (%rsi), %rdx - movq 24 (%rsi), %r8 - movq 32 (%rsi), %r9 -- movq 40 (%rsi), %r10 -+ movq 40 (%rsi), %r13 - movq 48 (%rsi), %r11 - movq 56 (%rsi), %r12 - -@@ -76,7 +79,7 @@ ENTRY(copy_page) - movq %rdx, 16 (%rdi) - movq %r8, 24 (%rdi) - movq %r9, 32 (%rdi) -- movq %r10, 40 (%rdi) -+ movq %r13, 40 (%rdi) - movq %r11, 48 (%rdi) - movq %r12, 56 (%rdi) - -@@ -89,8 +92,11 @@ ENTRY(copy_page) - CFI_RESTORE rbx - movq 1*8(%rsp),%r12 - CFI_RESTORE r12 -- addq $2*8,%rsp -- CFI_ADJUST_CFA_OFFSET -2*8 -+ movq 2*8(%rsp),%r13 -+ CFI_RESTORE r13 -+ addq $3*8,%rsp -+ CFI_ADJUST_CFA_OFFSET -3*8 -+ pax_force_retaddr - ret - .Lcopy_page_end: - CFI_ENDPROC -@@ -101,7 +107,7 @@ ENDPROC(copy_page) - - #include - -- .section .altinstr_replacement,"ax" -+ .section .altinstr_replacement,"a" - 1: .byte 0xeb /* jmp */ - .byte (copy_page_c - copy_page) - (2f - 1b) /* offset */ - 2: -diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S -index 5b2995f..78e7644 100644 ---- a/arch/x86/lib/copy_user_64.S -+++ b/arch/x86/lib/copy_user_64.S -@@ -17,6 +17,7 @@ - #include - #include - #include -+#include - - /* - * By placing feature2 after feature1 in altinstructions section, we logically -@@ -30,7 +31,7 @@ - .byte 0xe9 /* 32bit jump */ - .long \orig-1f /* by default jump to orig */ - 1: -- .section .altinstr_replacement,"ax" -+ .section .altinstr_replacement,"a" - 2: .byte 0xe9 /* near jump with 32bit immediate */ - .long \alt1-1b /* offset */ /* or alternatively to alt1 */ - 3: .byte 0xe9 /* near jump with 32bit immediate */ -@@ -69,47 +70,20 @@ - #endif - .endm - --/* Standard copy_to_user with segment limit checking */ --ENTRY(_copy_to_user) -- CFI_STARTPROC -- GET_THREAD_INFO(%rax) -- movq %rdi,%rcx -- addq %rdx,%rcx -- jc bad_to_user -- cmpq TI_addr_limit(%rax),%rcx -- ja bad_to_user -- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \ -- copy_user_generic_unrolled,copy_user_generic_string, \ -- copy_user_enhanced_fast_string -- CFI_ENDPROC --ENDPROC(_copy_to_user) -- --/* Standard copy_from_user with segment limit checking */ --ENTRY(_copy_from_user) -- CFI_STARTPROC -- GET_THREAD_INFO(%rax) -- movq %rsi,%rcx -- addq %rdx,%rcx -- jc bad_from_user -- cmpq TI_addr_limit(%rax),%rcx -- ja bad_from_user -- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \ -- copy_user_generic_unrolled,copy_user_generic_string, \ -- copy_user_enhanced_fast_string -- CFI_ENDPROC --ENDPROC(_copy_from_user) -- - .section .fixup,"ax" - /* must zero dest */ - ENTRY(bad_from_user) - bad_from_user: - CFI_STARTPROC -+ testl %edx,%edx -+ js bad_to_user - movl %edx,%ecx - xorl %eax,%eax - rep - stosb - bad_to_user: - movl %edx,%eax -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(bad_from_user) -@@ -139,19 +113,19 @@ ENTRY(copy_user_generic_unrolled) - jz 17f - 1: movq (%rsi),%r8 - 2: movq 1*8(%rsi),%r9 --3: movq 2*8(%rsi),%r10 -+3: movq 2*8(%rsi),%rax - 4: movq 3*8(%rsi),%r11 - 5: movq %r8,(%rdi) - 6: movq %r9,1*8(%rdi) --7: movq %r10,2*8(%rdi) -+7: movq %rax,2*8(%rdi) - 8: movq %r11,3*8(%rdi) - 9: movq 4*8(%rsi),%r8 - 10: movq 5*8(%rsi),%r9 --11: movq 6*8(%rsi),%r10 -+11: movq 6*8(%rsi),%rax - 12: movq 7*8(%rsi),%r11 - 13: movq %r8,4*8(%rdi) - 14: movq %r9,5*8(%rdi) --15: movq %r10,6*8(%rdi) -+15: movq %rax,6*8(%rdi) - 16: movq %r11,7*8(%rdi) - leaq 64(%rsi),%rsi - leaq 64(%rdi),%rdi -@@ -177,6 +151,7 @@ ENTRY(copy_user_generic_unrolled) - decl %ecx - jnz 21b - 23: xor %eax,%eax -+ pax_force_retaddr - ret - - .section .fixup,"ax" -@@ -246,6 +221,7 @@ ENTRY(copy_user_generic_string) - 3: rep - movsb - 4: xorl %eax,%eax -+ pax_force_retaddr - ret - - .section .fixup,"ax" -@@ -279,6 +255,7 @@ ENTRY(copy_user_enhanced_fast_string) - 1: rep - movsb - 2: xorl %eax,%eax -+ pax_force_retaddr - ret - - .section .fixup,"ax" -diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S -index cacddc7..09d49e4 100644 ---- a/arch/x86/lib/copy_user_nocache_64.S -+++ b/arch/x86/lib/copy_user_nocache_64.S -@@ -8,6 +8,7 @@ - - #include - #include -+#include - - #define FIX_ALIGNMENT 1 - -@@ -15,6 +16,7 @@ - #include - #include - #include -+#include - - .macro ALIGN_DESTINATION - #ifdef FIX_ALIGNMENT -@@ -48,6 +50,15 @@ - */ - ENTRY(__copy_user_nocache) - CFI_STARTPROC -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ mov $PAX_USER_SHADOW_BASE,%rcx -+ cmp %rcx,%rsi -+ jae 1f -+ add %rcx,%rsi -+1: -+#endif -+ - cmpl $8,%edx - jb 20f /* less then 8 bytes, go to byte copy loop */ - ALIGN_DESTINATION -@@ -57,19 +68,19 @@ ENTRY(__copy_user_nocache) - jz 17f - 1: movq (%rsi),%r8 - 2: movq 1*8(%rsi),%r9 --3: movq 2*8(%rsi),%r10 -+3: movq 2*8(%rsi),%rax - 4: movq 3*8(%rsi),%r11 - 5: movnti %r8,(%rdi) - 6: movnti %r9,1*8(%rdi) --7: movnti %r10,2*8(%rdi) -+7: movnti %rax,2*8(%rdi) - 8: movnti %r11,3*8(%rdi) - 9: movq 4*8(%rsi),%r8 - 10: movq 5*8(%rsi),%r9 --11: movq 6*8(%rsi),%r10 -+11: movq 6*8(%rsi),%rax - 12: movq 7*8(%rsi),%r11 - 13: movnti %r8,4*8(%rdi) - 14: movnti %r9,5*8(%rdi) --15: movnti %r10,6*8(%rdi) -+15: movnti %rax,6*8(%rdi) - 16: movnti %r11,7*8(%rdi) - leaq 64(%rsi),%rsi - leaq 64(%rdi),%rdi -@@ -96,6 +107,7 @@ ENTRY(__copy_user_nocache) - jnz 21b - 23: xorl %eax,%eax - sfence -+ pax_force_retaddr - ret - - .section .fixup,"ax" -diff --git a/arch/x86/lib/csum-copy_64.S b/arch/x86/lib/csum-copy_64.S -index 2419d5f..953ee51 100644 ---- a/arch/x86/lib/csum-copy_64.S -+++ b/arch/x86/lib/csum-copy_64.S -@@ -9,6 +9,7 @@ - #include - #include - #include -+#include - - /* - * Checksum copy with exception handling. -@@ -220,6 +221,7 @@ ENTRY(csum_partial_copy_generic) - CFI_RESTORE rbp - addq $7*8, %rsp - CFI_ADJUST_CFA_OFFSET -7*8 -+ pax_force_retaddr 0, 1 - ret - CFI_RESTORE_STATE - -diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c -index 25b7ae8..169fafc 100644 ---- a/arch/x86/lib/csum-wrappers_64.c -+++ b/arch/x86/lib/csum-wrappers_64.c -@@ -52,7 +52,7 @@ csum_partial_copy_from_user(const void __user *src, void *dst, - len -= 2; - } - } -- isum = csum_partial_copy_generic((__force const void *)src, -+ isum = csum_partial_copy_generic((const void __force_kernel *)____m(src), - dst, len, isum, errp, NULL); - if (unlikely(*errp)) - goto out_err; -@@ -105,7 +105,7 @@ csum_partial_copy_to_user(const void *src, void __user *dst, - } - - *errp = 0; -- return csum_partial_copy_generic(src, (void __force *)dst, -+ return csum_partial_copy_generic(src, (void __force_kernel *)____m(dst), - len, isum, NULL, errp); - } - EXPORT_SYMBOL(csum_partial_copy_to_user); -diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S -index b33b1fb..219f389 100644 ---- a/arch/x86/lib/getuser.S -+++ b/arch/x86/lib/getuser.S -@@ -33,15 +33,38 @@ - #include - #include - #include -+#include -+#include -+#include -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define __copyuser_seg gs; -+#else -+#define __copyuser_seg -+#endif - - .text - ENTRY(__get_user_1) - CFI_STARTPROC -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user --1: movzb (%_ASM_AX),%edx -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_DX -+ cmp %_ASM_DX,%_ASM_AX -+ jae 1234f -+ add %_ASM_DX,%_ASM_AX -+1234: -+#endif -+ -+#endif -+ -+1: __copyuser_seg movzb (%_ASM_AX),%edx - xor %eax,%eax -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(__get_user_1) -@@ -49,12 +72,26 @@ ENDPROC(__get_user_1) - ENTRY(__get_user_2) - CFI_STARTPROC - add $1,%_ASM_AX -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) - jc bad_get_user - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user --2: movzwl -1(%_ASM_AX),%edx -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_DX -+ cmp %_ASM_DX,%_ASM_AX -+ jae 1234f -+ add %_ASM_DX,%_ASM_AX -+1234: -+#endif -+ -+#endif -+ -+2: __copyuser_seg movzwl -1(%_ASM_AX),%edx - xor %eax,%eax -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(__get_user_2) -@@ -62,12 +99,26 @@ ENDPROC(__get_user_2) - ENTRY(__get_user_4) - CFI_STARTPROC - add $3,%_ASM_AX -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) - jc bad_get_user - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user --3: mov -3(%_ASM_AX),%edx -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_DX -+ cmp %_ASM_DX,%_ASM_AX -+ jae 1234f -+ add %_ASM_DX,%_ASM_AX -+1234: -+#endif -+ -+#endif -+ -+3: __copyuser_seg mov -3(%_ASM_AX),%edx - xor %eax,%eax -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(__get_user_4) -@@ -80,8 +131,18 @@ ENTRY(__get_user_8) - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user -+ -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+ mov $PAX_USER_SHADOW_BASE,%_ASM_DX -+ cmp %_ASM_DX,%_ASM_AX -+ jae 1234f -+ add %_ASM_DX,%_ASM_AX -+1234: -+#endif -+ - 4: movq -7(%_ASM_AX),%_ASM_DX - xor %eax,%eax -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(__get_user_8) -@@ -91,6 +152,7 @@ bad_get_user: - CFI_STARTPROC - xor %edx,%edx - mov $(-EFAULT),%_ASM_AX -+ pax_force_retaddr - ret - CFI_ENDPROC - END(bad_get_user) -diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c -index b1e6c4b..21ae8fc 100644 ---- a/arch/x86/lib/insn.c -+++ b/arch/x86/lib/insn.c -@@ -21,6 +21,11 @@ - #include - #include - #include -+#ifdef __KERNEL__ -+#include -+#else -+#define ktla_ktva(addr) addr -+#endif - - /* Verify next sizeof(t) bytes can be on the same instruction */ - #define validate_next(t, insn, n) \ -@@ -49,8 +54,8 @@ - void insn_init(struct insn *insn, const void *kaddr, int x86_64) - { - memset(insn, 0, sizeof(*insn)); -- insn->kaddr = kaddr; -- insn->next_byte = kaddr; -+ insn->kaddr = ktla_ktva(kaddr); -+ insn->next_byte = ktla_ktva(kaddr); - insn->x86_64 = x86_64 ? 1 : 0; - insn->opnd_bytes = 4; - if (x86_64) -diff --git a/arch/x86/lib/iomap_copy_64.S b/arch/x86/lib/iomap_copy_64.S -index 05a95e7..326f2fa 100644 ---- a/arch/x86/lib/iomap_copy_64.S -+++ b/arch/x86/lib/iomap_copy_64.S -@@ -17,6 +17,7 @@ - - #include - #include -+#include - - /* - * override generic version in lib/iomap_copy.c -@@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy) - CFI_STARTPROC - movl %edx,%ecx - rep movsd -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(__iowrite32_copy) -diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S -index 1c273be..da9cc0e 100644 ---- a/arch/x86/lib/memcpy_64.S -+++ b/arch/x86/lib/memcpy_64.S -@@ -33,6 +33,7 @@ - rep movsq - movl %edx, %ecx - rep movsb -+ pax_force_retaddr - ret - .Lmemcpy_e: - .previous -@@ -49,6 +50,7 @@ - movq %rdi, %rax - movq %rdx, %rcx - rep movsb -+ pax_force_retaddr - ret - .Lmemcpy_e_e: - .previous -@@ -76,13 +78,13 @@ ENTRY(memcpy) - */ - movq 0*8(%rsi), %r8 - movq 1*8(%rsi), %r9 -- movq 2*8(%rsi), %r10 -+ movq 2*8(%rsi), %rcx - movq 3*8(%rsi), %r11 - leaq 4*8(%rsi), %rsi - - movq %r8, 0*8(%rdi) - movq %r9, 1*8(%rdi) -- movq %r10, 2*8(%rdi) -+ movq %rcx, 2*8(%rdi) - movq %r11, 3*8(%rdi) - leaq 4*8(%rdi), %rdi - jae .Lcopy_forward_loop -@@ -105,12 +107,12 @@ ENTRY(memcpy) - subq $0x20, %rdx - movq -1*8(%rsi), %r8 - movq -2*8(%rsi), %r9 -- movq -3*8(%rsi), %r10 -+ movq -3*8(%rsi), %rcx - movq -4*8(%rsi), %r11 - leaq -4*8(%rsi), %rsi - movq %r8, -1*8(%rdi) - movq %r9, -2*8(%rdi) -- movq %r10, -3*8(%rdi) -+ movq %rcx, -3*8(%rdi) - movq %r11, -4*8(%rdi) - leaq -4*8(%rdi), %rdi - jae .Lcopy_backward_loop -@@ -130,12 +132,13 @@ ENTRY(memcpy) - */ - movq 0*8(%rsi), %r8 - movq 1*8(%rsi), %r9 -- movq -2*8(%rsi, %rdx), %r10 -+ movq -2*8(%rsi, %rdx), %rcx - movq -1*8(%rsi, %rdx), %r11 - movq %r8, 0*8(%rdi) - movq %r9, 1*8(%rdi) -- movq %r10, -2*8(%rdi, %rdx) -+ movq %rcx, -2*8(%rdi, %rdx) - movq %r11, -1*8(%rdi, %rdx) -+ pax_force_retaddr - retq - .p2align 4 - .Lless_16bytes: -@@ -148,6 +151,7 @@ ENTRY(memcpy) - movq -1*8(%rsi, %rdx), %r9 - movq %r8, 0*8(%rdi) - movq %r9, -1*8(%rdi, %rdx) -+ pax_force_retaddr - retq - .p2align 4 - .Lless_8bytes: -@@ -161,6 +165,7 @@ ENTRY(memcpy) - movl -4(%rsi, %rdx), %r8d - movl %ecx, (%rdi) - movl %r8d, -4(%rdi, %rdx) -+ pax_force_retaddr - retq - .p2align 4 - .Lless_3bytes: -@@ -179,6 +184,7 @@ ENTRY(memcpy) - movb %cl, (%rdi) - - .Lend: -+ pax_force_retaddr - retq - CFI_ENDPROC - ENDPROC(memcpy) -diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S -index ee16461..c39c199 100644 ---- a/arch/x86/lib/memmove_64.S -+++ b/arch/x86/lib/memmove_64.S -@@ -61,13 +61,13 @@ ENTRY(memmove) - 5: - sub $0x20, %rdx - movq 0*8(%rsi), %r11 -- movq 1*8(%rsi), %r10 -+ movq 1*8(%rsi), %rcx - movq 2*8(%rsi), %r9 - movq 3*8(%rsi), %r8 - leaq 4*8(%rsi), %rsi - - movq %r11, 0*8(%rdi) -- movq %r10, 1*8(%rdi) -+ movq %rcx, 1*8(%rdi) - movq %r9, 2*8(%rdi) - movq %r8, 3*8(%rdi) - leaq 4*8(%rdi), %rdi -@@ -81,10 +81,10 @@ ENTRY(memmove) - 4: - movq %rdx, %rcx - movq -8(%rsi, %rdx), %r11 -- lea -8(%rdi, %rdx), %r10 -+ lea -8(%rdi, %rdx), %r9 - shrq $3, %rcx - rep movsq -- movq %r11, (%r10) -+ movq %r11, (%r9) - jmp 13f - .Lmemmove_end_forward: - -@@ -95,14 +95,14 @@ ENTRY(memmove) - 7: - movq %rdx, %rcx - movq (%rsi), %r11 -- movq %rdi, %r10 -+ movq %rdi, %r9 - leaq -8(%rsi, %rdx), %rsi - leaq -8(%rdi, %rdx), %rdi - shrq $3, %rcx - std - rep movsq - cld -- movq %r11, (%r10) -+ movq %r11, (%r9) - jmp 13f - - /* -@@ -127,13 +127,13 @@ ENTRY(memmove) - 8: - subq $0x20, %rdx - movq -1*8(%rsi), %r11 -- movq -2*8(%rsi), %r10 -+ movq -2*8(%rsi), %rcx - movq -3*8(%rsi), %r9 - movq -4*8(%rsi), %r8 - leaq -4*8(%rsi), %rsi - - movq %r11, -1*8(%rdi) -- movq %r10, -2*8(%rdi) -+ movq %rcx, -2*8(%rdi) - movq %r9, -3*8(%rdi) - movq %r8, -4*8(%rdi) - leaq -4*8(%rdi), %rdi -@@ -151,11 +151,11 @@ ENTRY(memmove) - * Move data from 16 bytes to 31 bytes. - */ - movq 0*8(%rsi), %r11 -- movq 1*8(%rsi), %r10 -+ movq 1*8(%rsi), %rcx - movq -2*8(%rsi, %rdx), %r9 - movq -1*8(%rsi, %rdx), %r8 - movq %r11, 0*8(%rdi) -- movq %r10, 1*8(%rdi) -+ movq %rcx, 1*8(%rdi) - movq %r9, -2*8(%rdi, %rdx) - movq %r8, -1*8(%rdi, %rdx) - jmp 13f -@@ -167,9 +167,9 @@ ENTRY(memmove) - * Move data from 8 bytes to 15 bytes. - */ - movq 0*8(%rsi), %r11 -- movq -1*8(%rsi, %rdx), %r10 -+ movq -1*8(%rsi, %rdx), %r9 - movq %r11, 0*8(%rdi) -- movq %r10, -1*8(%rdi, %rdx) -+ movq %r9, -1*8(%rdi, %rdx) - jmp 13f - 10: - cmpq $4, %rdx -@@ -178,9 +178,9 @@ ENTRY(memmove) - * Move data from 4 bytes to 7 bytes. - */ - movl (%rsi), %r11d -- movl -4(%rsi, %rdx), %r10d -+ movl -4(%rsi, %rdx), %r9d - movl %r11d, (%rdi) -- movl %r10d, -4(%rdi, %rdx) -+ movl %r9d, -4(%rdi, %rdx) - jmp 13f - 11: - cmp $2, %rdx -@@ -189,9 +189,9 @@ ENTRY(memmove) - * Move data from 2 bytes to 3 bytes. - */ - movw (%rsi), %r11w -- movw -2(%rsi, %rdx), %r10w -+ movw -2(%rsi, %rdx), %r9w - movw %r11w, (%rdi) -- movw %r10w, -2(%rdi, %rdx) -+ movw %r9w, -2(%rdi, %rdx) - jmp 13f - 12: - cmp $1, %rdx -@@ -202,6 +202,7 @@ ENTRY(memmove) - movb (%rsi), %r11b - movb %r11b, (%rdi) - 13: -+ pax_force_retaddr - retq - CFI_ENDPROC - -@@ -210,6 +211,7 @@ ENTRY(memmove) - /* Forward moving data. */ - movq %rdx, %rcx - rep movsb -+ pax_force_retaddr - retq - .Lmemmove_end_forward_efs: - .previous -diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S -index 2dcb380..963660a 100644 ---- a/arch/x86/lib/memset_64.S -+++ b/arch/x86/lib/memset_64.S -@@ -30,6 +30,7 @@ - movl %edx,%ecx - rep stosb - movq %r9,%rax -+ pax_force_retaddr - ret - .Lmemset_e: - .previous -@@ -52,6 +53,7 @@ - movq %rdx,%rcx - rep stosb - movq %r9,%rax -+ pax_force_retaddr - ret - .Lmemset_e_e: - .previous -@@ -59,7 +61,7 @@ - ENTRY(memset) - ENTRY(__memset) - CFI_STARTPROC -- movq %rdi,%r10 -+ movq %rdi,%r11 - - /* expand byte value */ - movzbl %sil,%ecx -@@ -117,7 +119,8 @@ ENTRY(__memset) - jnz .Lloop_1 - - .Lende: -- movq %r10,%rax -+ movq %r11,%rax -+ pax_force_retaddr - ret - - CFI_RESTORE_STATE -diff --git a/arch/x86/lib/mmx_32.c b/arch/x86/lib/mmx_32.c -index c9f2d9b..e7fd2c0 100644 ---- a/arch/x86/lib/mmx_32.c -+++ b/arch/x86/lib/mmx_32.c -@@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len) - { - void *p; - int i; -+ unsigned long cr0; - - if (unlikely(in_interrupt())) - return __memcpy(to, from, len); -@@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void *from, size_t len) - kernel_fpu_begin(); - - __asm__ __volatile__ ( -- "1: prefetch (%0)\n" /* This set is 28 bytes */ -- " prefetch 64(%0)\n" -- " prefetch 128(%0)\n" -- " prefetch 192(%0)\n" -- " prefetch 256(%0)\n" -+ "1: prefetch (%1)\n" /* This set is 28 bytes */ -+ " prefetch 64(%1)\n" -+ " prefetch 128(%1)\n" -+ " prefetch 192(%1)\n" -+ " prefetch 256(%1)\n" - "2: \n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ "3: \n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" - _ASM_EXTABLE(1b, 3b) -- : : "r" (from)); -+ : "=&r" (cr0) : "r" (from) : "ax"); - - for ( ; i > 5; i--) { - __asm__ __volatile__ ( -- "1: prefetch 320(%0)\n" -- "2: movq (%0), %%mm0\n" -- " movq 8(%0), %%mm1\n" -- " movq 16(%0), %%mm2\n" -- " movq 24(%0), %%mm3\n" -- " movq %%mm0, (%1)\n" -- " movq %%mm1, 8(%1)\n" -- " movq %%mm2, 16(%1)\n" -- " movq %%mm3, 24(%1)\n" -- " movq 32(%0), %%mm0\n" -- " movq 40(%0), %%mm1\n" -- " movq 48(%0), %%mm2\n" -- " movq 56(%0), %%mm3\n" -- " movq %%mm0, 32(%1)\n" -- " movq %%mm1, 40(%1)\n" -- " movq %%mm2, 48(%1)\n" -- " movq %%mm3, 56(%1)\n" -+ "1: prefetch 320(%1)\n" -+ "2: movq (%1), %%mm0\n" -+ " movq 8(%1), %%mm1\n" -+ " movq 16(%1), %%mm2\n" -+ " movq 24(%1), %%mm3\n" -+ " movq %%mm0, (%2)\n" -+ " movq %%mm1, 8(%2)\n" -+ " movq %%mm2, 16(%2)\n" -+ " movq %%mm3, 24(%2)\n" -+ " movq 32(%1), %%mm0\n" -+ " movq 40(%1), %%mm1\n" -+ " movq 48(%1), %%mm2\n" -+ " movq 56(%1), %%mm3\n" -+ " movq %%mm0, 32(%2)\n" -+ " movq %%mm1, 40(%2)\n" -+ " movq %%mm2, 48(%2)\n" -+ " movq %%mm3, 56(%2)\n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ "3:\n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" - _ASM_EXTABLE(1b, 3b) -- : : "r" (from), "r" (to) : "memory"); -+ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); - - from += 64; - to += 64; -@@ -158,6 +187,7 @@ static void fast_clear_page(void *page) - static void fast_copy_page(void *to, void *from) - { - int i; -+ unsigned long cr0; - - kernel_fpu_begin(); - -@@ -166,42 +196,70 @@ static void fast_copy_page(void *to, void *from) - * but that is for later. -AV - */ - __asm__ __volatile__( -- "1: prefetch (%0)\n" -- " prefetch 64(%0)\n" -- " prefetch 128(%0)\n" -- " prefetch 192(%0)\n" -- " prefetch 256(%0)\n" -+ "1: prefetch (%1)\n" -+ " prefetch 64(%1)\n" -+ " prefetch 128(%1)\n" -+ " prefetch 192(%1)\n" -+ " prefetch 256(%1)\n" - "2: \n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ "3: \n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" -- _ASM_EXTABLE(1b, 3b) : : "r" (from)); -+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); - - for (i = 0; i < (4096-320)/64; i++) { - __asm__ __volatile__ ( -- "1: prefetch 320(%0)\n" -- "2: movq (%0), %%mm0\n" -- " movntq %%mm0, (%1)\n" -- " movq 8(%0), %%mm1\n" -- " movntq %%mm1, 8(%1)\n" -- " movq 16(%0), %%mm2\n" -- " movntq %%mm2, 16(%1)\n" -- " movq 24(%0), %%mm3\n" -- " movntq %%mm3, 24(%1)\n" -- " movq 32(%0), %%mm4\n" -- " movntq %%mm4, 32(%1)\n" -- " movq 40(%0), %%mm5\n" -- " movntq %%mm5, 40(%1)\n" -- " movq 48(%0), %%mm6\n" -- " movntq %%mm6, 48(%1)\n" -- " movq 56(%0), %%mm7\n" -- " movntq %%mm7, 56(%1)\n" -+ "1: prefetch 320(%1)\n" -+ "2: movq (%1), %%mm0\n" -+ " movntq %%mm0, (%2)\n" -+ " movq 8(%1), %%mm1\n" -+ " movntq %%mm1, 8(%2)\n" -+ " movq 16(%1), %%mm2\n" -+ " movntq %%mm2, 16(%2)\n" -+ " movq 24(%1), %%mm3\n" -+ " movntq %%mm3, 24(%2)\n" -+ " movq 32(%1), %%mm4\n" -+ " movntq %%mm4, 32(%2)\n" -+ " movq 40(%1), %%mm5\n" -+ " movntq %%mm5, 40(%2)\n" -+ " movq 48(%1), %%mm6\n" -+ " movntq %%mm6, 48(%2)\n" -+ " movq 56(%1), %%mm7\n" -+ " movntq %%mm7, 56(%2)\n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ "3:\n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" -- _ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory"); -+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); - - from += 64; - to += 64; -@@ -280,47 +338,76 @@ static void fast_clear_page(void *page) - static void fast_copy_page(void *to, void *from) - { - int i; -+ unsigned long cr0; - - kernel_fpu_begin(); - - __asm__ __volatile__ ( -- "1: prefetch (%0)\n" -- " prefetch 64(%0)\n" -- " prefetch 128(%0)\n" -- " prefetch 192(%0)\n" -- " prefetch 256(%0)\n" -+ "1: prefetch (%1)\n" -+ " prefetch 64(%1)\n" -+ " prefetch 128(%1)\n" -+ " prefetch 192(%1)\n" -+ " prefetch 256(%1)\n" - "2: \n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ "3: \n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" -- _ASM_EXTABLE(1b, 3b) : : "r" (from)); -+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); - - for (i = 0; i < 4096/64; i++) { - __asm__ __volatile__ ( -- "1: prefetch 320(%0)\n" -- "2: movq (%0), %%mm0\n" -- " movq 8(%0), %%mm1\n" -- " movq 16(%0), %%mm2\n" -- " movq 24(%0), %%mm3\n" -- " movq %%mm0, (%1)\n" -- " movq %%mm1, 8(%1)\n" -- " movq %%mm2, 16(%1)\n" -- " movq %%mm3, 24(%1)\n" -- " movq 32(%0), %%mm0\n" -- " movq 40(%0), %%mm1\n" -- " movq 48(%0), %%mm2\n" -- " movq 56(%0), %%mm3\n" -- " movq %%mm0, 32(%1)\n" -- " movq %%mm1, 40(%1)\n" -- " movq %%mm2, 48(%1)\n" -- " movq %%mm3, 56(%1)\n" -+ "1: prefetch 320(%1)\n" -+ "2: movq (%1), %%mm0\n" -+ " movq 8(%1), %%mm1\n" -+ " movq 16(%1), %%mm2\n" -+ " movq 24(%1), %%mm3\n" -+ " movq %%mm0, (%2)\n" -+ " movq %%mm1, 8(%2)\n" -+ " movq %%mm2, 16(%2)\n" -+ " movq %%mm3, 24(%2)\n" -+ " movq 32(%1), %%mm0\n" -+ " movq 40(%1), %%mm1\n" -+ " movq 48(%1), %%mm2\n" -+ " movq 56(%1), %%mm3\n" -+ " movq %%mm0, 32(%2)\n" -+ " movq %%mm1, 40(%2)\n" -+ " movq %%mm2, 48(%2)\n" -+ " movq %%mm3, 56(%2)\n" - ".section .fixup, \"ax\"\n" -- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ "3:\n" -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %%cr0, %0\n" -+ " movl %0, %%eax\n" -+ " andl $0xFFFEFFFF, %%eax\n" -+ " movl %%eax, %%cr0\n" -+#endif -+ -+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ " movl %0, %%cr0\n" -+#endif -+ - " jmp 2b\n" - ".previous\n" - _ASM_EXTABLE(1b, 3b) -- : : "r" (from), "r" (to) : "memory"); -+ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); - - from += 64; - to += 64; -diff --git a/arch/x86/lib/msr-reg.S b/arch/x86/lib/msr-reg.S -index f6d13ee..aca5f0b 100644 ---- a/arch/x86/lib/msr-reg.S -+++ b/arch/x86/lib/msr-reg.S -@@ -3,6 +3,7 @@ - #include - #include - #include -+#include - - #ifdef CONFIG_X86_64 - /* -@@ -16,7 +17,7 @@ ENTRY(\op\()_safe_regs) - CFI_STARTPROC - pushq_cfi %rbx - pushq_cfi %rbp -- movq %rdi, %r10 /* Save pointer */ -+ movq %rdi, %r9 /* Save pointer */ - xorl %r11d, %r11d /* Return value */ - movl (%rdi), %eax - movl 4(%rdi), %ecx -@@ -27,16 +28,17 @@ ENTRY(\op\()_safe_regs) - movl 28(%rdi), %edi - CFI_REMEMBER_STATE - 1: \op --2: movl %eax, (%r10) -+2: movl %eax, (%r9) - movl %r11d, %eax /* Return value */ -- movl %ecx, 4(%r10) -- movl %edx, 8(%r10) -- movl %ebx, 12(%r10) -- movl %ebp, 20(%r10) -- movl %esi, 24(%r10) -- movl %edi, 28(%r10) -+ movl %ecx, 4(%r9) -+ movl %edx, 8(%r9) -+ movl %ebx, 12(%r9) -+ movl %ebp, 20(%r9) -+ movl %esi, 24(%r9) -+ movl %edi, 28(%r9) - popq_cfi %rbp - popq_cfi %rbx -+ pax_force_retaddr - ret - 3: - CFI_RESTORE_STATE -diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S -index 7f951c8..ebd573a 100644 ---- a/arch/x86/lib/putuser.S -+++ b/arch/x86/lib/putuser.S -@@ -15,7 +15,9 @@ - #include - #include - #include -- -+#include -+#include -+#include - - /* - * __put_user_X -@@ -29,52 +31,119 @@ - * as they get called from within inline assembly. - */ - --#define ENTER CFI_STARTPROC ; \ -- GET_THREAD_INFO(%_ASM_BX) --#define EXIT ret ; \ -+#define ENTER CFI_STARTPROC -+#define EXIT pax_force_retaddr; ret ; \ - CFI_ENDPROC - -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define _DEST %_ASM_CX,%_ASM_BX -+#else -+#define _DEST %_ASM_CX -+#endif -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#define __copyuser_seg gs; -+#else -+#define __copyuser_seg -+#endif -+ - .text - ENTRY(__put_user_1) - ENTER -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) -+ GET_THREAD_INFO(%_ASM_BX) - cmp TI_addr_limit(%_ASM_BX),%_ASM_CX - jae bad_put_user --1: movb %al,(%_ASM_CX) -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_BX -+ cmp %_ASM_BX,%_ASM_CX -+ jb 1234f -+ xor %ebx,%ebx -+1234: -+#endif -+ -+#endif -+ -+1: __copyuser_seg movb %al,(_DEST) - xor %eax,%eax - EXIT - ENDPROC(__put_user_1) - - ENTRY(__put_user_2) - ENTER -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) -+ GET_THREAD_INFO(%_ASM_BX) - mov TI_addr_limit(%_ASM_BX),%_ASM_BX - sub $1,%_ASM_BX - cmp %_ASM_BX,%_ASM_CX - jae bad_put_user --2: movw %ax,(%_ASM_CX) -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_BX -+ cmp %_ASM_BX,%_ASM_CX -+ jb 1234f -+ xor %ebx,%ebx -+1234: -+#endif -+ -+#endif -+ -+2: __copyuser_seg movw %ax,(_DEST) - xor %eax,%eax - EXIT - ENDPROC(__put_user_2) - - ENTRY(__put_user_4) - ENTER -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) -+ GET_THREAD_INFO(%_ASM_BX) - mov TI_addr_limit(%_ASM_BX),%_ASM_BX - sub $3,%_ASM_BX - cmp %_ASM_BX,%_ASM_CX - jae bad_put_user --3: movl %eax,(%_ASM_CX) -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_BX -+ cmp %_ASM_BX,%_ASM_CX -+ jb 1234f -+ xor %ebx,%ebx -+1234: -+#endif -+ -+#endif -+ -+3: __copyuser_seg movl %eax,(_DEST) - xor %eax,%eax - EXIT - ENDPROC(__put_user_4) - - ENTRY(__put_user_8) - ENTER -+ -+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) -+ GET_THREAD_INFO(%_ASM_BX) - mov TI_addr_limit(%_ASM_BX),%_ASM_BX - sub $7,%_ASM_BX - cmp %_ASM_BX,%_ASM_CX - jae bad_put_user --4: mov %_ASM_AX,(%_ASM_CX) -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ mov $PAX_USER_SHADOW_BASE,%_ASM_BX -+ cmp %_ASM_BX,%_ASM_CX -+ jb 1234f -+ xor %ebx,%ebx -+1234: -+#endif -+ -+#endif -+ -+4: __copyuser_seg mov %_ASM_AX,(_DEST) - #ifdef CONFIG_X86_32 --5: movl %edx,4(%_ASM_CX) -+5: __copyuser_seg movl %edx,4(_DEST) - #endif - xor %eax,%eax - EXIT -diff --git a/arch/x86/lib/rwlock.S b/arch/x86/lib/rwlock.S -index 1cad221..de671ee 100644 ---- a/arch/x86/lib/rwlock.S -+++ b/arch/x86/lib/rwlock.S -@@ -16,13 +16,34 @@ ENTRY(__write_lock_failed) - FRAME - 0: LOCK_PREFIX - WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 1234f -+ LOCK_PREFIX -+ WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr) -+ int $4 -+1234: -+ _ASM_EXTABLE(1234b, 1234b) -+#endif -+ - 1: rep; nop - cmpl $WRITE_LOCK_CMP, (%__lock_ptr) - jne 1b - LOCK_PREFIX - WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 1234f -+ LOCK_PREFIX -+ WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr) -+ int $4 -+1234: -+ _ASM_EXTABLE(1234b, 1234b) -+#endif -+ - jnz 0b - ENDFRAME -+ pax_force_retaddr - ret - CFI_ENDPROC - END(__write_lock_failed) -@@ -32,13 +53,34 @@ ENTRY(__read_lock_failed) - FRAME - 0: LOCK_PREFIX - READ_LOCK_SIZE(inc) (%__lock_ptr) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 1234f -+ LOCK_PREFIX -+ READ_LOCK_SIZE(dec) (%__lock_ptr) -+ int $4 -+1234: -+ _ASM_EXTABLE(1234b, 1234b) -+#endif -+ - 1: rep; nop - READ_LOCK_SIZE(cmp) $1, (%__lock_ptr) - js 1b - LOCK_PREFIX - READ_LOCK_SIZE(dec) (%__lock_ptr) -+ -+#ifdef CONFIG_PAX_REFCOUNT -+ jno 1234f -+ LOCK_PREFIX -+ READ_LOCK_SIZE(inc) (%__lock_ptr) -+ int $4 -+1234: -+ _ASM_EXTABLE(1234b, 1234b) -+#endif -+ - js 0b - ENDFRAME -+ pax_force_retaddr - ret - CFI_ENDPROC - END(__read_lock_failed) -diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S -index 5dff5f0..cadebf4 100644 ---- a/arch/x86/lib/rwsem.S -+++ b/arch/x86/lib/rwsem.S -@@ -94,6 +94,7 @@ ENTRY(call_rwsem_down_read_failed) - __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) - CFI_RESTORE __ASM_REG(dx) - restore_common_regs -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(call_rwsem_down_read_failed) -@@ -104,6 +105,7 @@ ENTRY(call_rwsem_down_write_failed) - movq %rax,%rdi - call rwsem_down_write_failed - restore_common_regs -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(call_rwsem_down_write_failed) -@@ -117,7 +119,8 @@ ENTRY(call_rwsem_wake) - movq %rax,%rdi - call rwsem_wake - restore_common_regs --1: ret -+1: pax_force_retaddr -+ ret - CFI_ENDPROC - ENDPROC(call_rwsem_wake) - -@@ -131,6 +134,7 @@ ENTRY(call_rwsem_downgrade_wake) - __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) - CFI_RESTORE __ASM_REG(dx) - restore_common_regs -+ pax_force_retaddr - ret - CFI_ENDPROC - ENDPROC(call_rwsem_downgrade_wake) -diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S -index a63efd6..ccecad8 100644 ---- a/arch/x86/lib/thunk_64.S -+++ b/arch/x86/lib/thunk_64.S -@@ -8,6 +8,7 @@ - #include - #include - #include -+#include - - /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ - .macro THUNK name, func, put_ret_addr_in_rdi=0 -@@ -41,5 +42,6 @@ - SAVE_ARGS - restore: - RESTORE_ARGS -+ pax_force_retaddr - ret - CFI_ENDPROC -diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c -index 1781b2f..90368dd 100644 ---- a/arch/x86/lib/usercopy_32.c -+++ b/arch/x86/lib/usercopy_32.c -@@ -42,10 +42,12 @@ do { \ - int __d0; \ - might_fault(); \ - __asm__ __volatile__( \ -+ __COPYUSER_SET_ES \ - "0: rep; stosl\n" \ - " movl %2,%0\n" \ - "1: rep; stosb\n" \ - "2:\n" \ -+ __COPYUSER_RESTORE_ES \ - ".section .fixup,\"ax\"\n" \ - "3: lea 0(%2,%0,4),%0\n" \ - " jmp 2b\n" \ -@@ -97,7 +99,7 @@ EXPORT_SYMBOL(__clear_user); - - #ifdef CONFIG_X86_INTEL_USERCOPY - static unsigned long --__copy_user_intel(void __user *to, const void *from, unsigned long size) -+__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size) - { - int d0, d1; - __asm__ __volatile__( -@@ -109,36 +111,36 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) - " .align 2,0x90\n" - "3: movl 0(%4), %%eax\n" - "4: movl 4(%4), %%edx\n" -- "5: movl %%eax, 0(%3)\n" -- "6: movl %%edx, 4(%3)\n" -+ "5: "__copyuser_seg" movl %%eax, 0(%3)\n" -+ "6: "__copyuser_seg" movl %%edx, 4(%3)\n" - "7: movl 8(%4), %%eax\n" - "8: movl 12(%4),%%edx\n" -- "9: movl %%eax, 8(%3)\n" -- "10: movl %%edx, 12(%3)\n" -+ "9: "__copyuser_seg" movl %%eax, 8(%3)\n" -+ "10: "__copyuser_seg" movl %%edx, 12(%3)\n" - "11: movl 16(%4), %%eax\n" - "12: movl 20(%4), %%edx\n" -- "13: movl %%eax, 16(%3)\n" -- "14: movl %%edx, 20(%3)\n" -+ "13: "__copyuser_seg" movl %%eax, 16(%3)\n" -+ "14: "__copyuser_seg" movl %%edx, 20(%3)\n" - "15: movl 24(%4), %%eax\n" - "16: movl 28(%4), %%edx\n" -- "17: movl %%eax, 24(%3)\n" -- "18: movl %%edx, 28(%3)\n" -+ "17: "__copyuser_seg" movl %%eax, 24(%3)\n" -+ "18: "__copyuser_seg" movl %%edx, 28(%3)\n" - "19: movl 32(%4), %%eax\n" - "20: movl 36(%4), %%edx\n" -- "21: movl %%eax, 32(%3)\n" -- "22: movl %%edx, 36(%3)\n" -+ "21: "__copyuser_seg" movl %%eax, 32(%3)\n" -+ "22: "__copyuser_seg" movl %%edx, 36(%3)\n" - "23: movl 40(%4), %%eax\n" - "24: movl 44(%4), %%edx\n" -- "25: movl %%eax, 40(%3)\n" -- "26: movl %%edx, 44(%3)\n" -+ "25: "__copyuser_seg" movl %%eax, 40(%3)\n" -+ "26: "__copyuser_seg" movl %%edx, 44(%3)\n" - "27: movl 48(%4), %%eax\n" - "28: movl 52(%4), %%edx\n" -- "29: movl %%eax, 48(%3)\n" -- "30: movl %%edx, 52(%3)\n" -+ "29: "__copyuser_seg" movl %%eax, 48(%3)\n" -+ "30: "__copyuser_seg" movl %%edx, 52(%3)\n" - "31: movl 56(%4), %%eax\n" - "32: movl 60(%4), %%edx\n" -- "33: movl %%eax, 56(%3)\n" -- "34: movl %%edx, 60(%3)\n" -+ "33: "__copyuser_seg" movl %%eax, 56(%3)\n" -+ "34: "__copyuser_seg" movl %%edx, 60(%3)\n" - " addl $-64, %0\n" - " addl $64, %4\n" - " addl $64, %3\n" -@@ -148,10 +150,12 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) - " shrl $2, %0\n" - " andl $3, %%eax\n" - " cld\n" -+ __COPYUSER_SET_ES - "99: rep; movsl\n" - "36: movl %%eax, %0\n" - "37: rep; movsb\n" - "100:\n" -+ __COPYUSER_RESTORE_ES - ".section .fixup,\"ax\"\n" - "101: lea 0(%%eax,%0,4),%0\n" - " jmp 100b\n" -@@ -201,46 +205,150 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) - } - - static unsigned long -+__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size) -+{ -+ int d0, d1; -+ __asm__ __volatile__( -+ " .align 2,0x90\n" -+ "1: "__copyuser_seg" movl 32(%4), %%eax\n" -+ " cmpl $67, %0\n" -+ " jbe 3f\n" -+ "2: "__copyuser_seg" movl 64(%4), %%eax\n" -+ " .align 2,0x90\n" -+ "3: "__copyuser_seg" movl 0(%4), %%eax\n" -+ "4: "__copyuser_seg" movl 4(%4), %%edx\n" -+ "5: movl %%eax, 0(%3)\n" -+ "6: movl %%edx, 4(%3)\n" -+ "7: "__copyuser_seg" movl 8(%4), %%eax\n" -+ "8: "__copyuser_seg" movl 12(%4),%%edx\n" -+ "9: movl %%eax, 8(%3)\n" -+ "10: movl %%edx, 12(%3)\n" -+ "11: "__copyuser_seg" movl 16(%4), %%eax\n" -+ "12: "__copyuser_seg" movl 20(%4), %%edx\n" -+ "13: movl %%eax, 16(%3)\n" -+ "14: movl %%edx, 20(%3)\n" -+ "15: "__copyuser_seg" movl 24(%4), %%eax\n" -+ "16: "__copyuser_seg" movl 28(%4), %%edx\n" -+ "17: movl %%eax, 24(%3)\n" -+ "18: movl %%edx, 28(%3)\n" -+ "19: "__copyuser_seg" movl 32(%4), %%eax\n" -+ "20: "__copyuser_seg" movl 36(%4), %%edx\n" -+ "21: movl %%eax, 32(%3)\n" -+ "22: movl %%edx, 36(%3)\n" -+ "23: "__copyuser_seg" movl 40(%4), %%eax\n" -+ "24: "__copyuser_seg" movl 44(%4), %%edx\n" -+ "25: movl %%eax, 40(%3)\n" -+ "26: movl %%edx, 44(%3)\n" -+ "27: "__copyuser_seg" movl 48(%4), %%eax\n" -+ "28: "__copyuser_seg" movl 52(%4), %%edx\n" -+ "29: movl %%eax, 48(%3)\n" -+ "30: movl %%edx, 52(%3)\n" -+ "31: "__copyuser_seg" movl 56(%4), %%eax\n" -+ "32: "__copyuser_seg" movl 60(%4), %%edx\n" -+ "33: movl %%eax, 56(%3)\n" -+ "34: movl %%edx, 60(%3)\n" -+ " addl $-64, %0\n" -+ " addl $64, %4\n" -+ " addl $64, %3\n" -+ " cmpl $63, %0\n" -+ " ja 1b\n" -+ "35: movl %0, %%eax\n" -+ " shrl $2, %0\n" -+ " andl $3, %%eax\n" -+ " cld\n" -+ "99: rep; "__copyuser_seg" movsl\n" -+ "36: movl %%eax, %0\n" -+ "37: rep; "__copyuser_seg" movsb\n" -+ "100:\n" -+ ".section .fixup,\"ax\"\n" -+ "101: lea 0(%%eax,%0,4),%0\n" -+ " jmp 100b\n" -+ ".previous\n" -+ _ASM_EXTABLE(1b,100b) -+ _ASM_EXTABLE(2b,100b) -+ _ASM_EXTABLE(3b,100b) -+ _ASM_EXTABLE(4b,100b) -+ _ASM_EXTABLE(5b,100b) -+ _ASM_EXTABLE(6b,100b) -+ _ASM_EXTABLE(7b,100b) -+ _ASM_EXTABLE(8b,100b) -+ _ASM_EXTABLE(9b,100b) -+ _ASM_EXTABLE(10b,100b) -+ _ASM_EXTABLE(11b,100b) -+ _ASM_EXTABLE(12b,100b) -+ _ASM_EXTABLE(13b,100b) -+ _ASM_EXTABLE(14b,100b) -+ _ASM_EXTABLE(15b,100b) -+ _ASM_EXTABLE(16b,100b) -+ _ASM_EXTABLE(17b,100b) -+ _ASM_EXTABLE(18b,100b) -+ _ASM_EXTABLE(19b,100b) -+ _ASM_EXTABLE(20b,100b) -+ _ASM_EXTABLE(21b,100b) -+ _ASM_EXTABLE(22b,100b) -+ _ASM_EXTABLE(23b,100b) -+ _ASM_EXTABLE(24b,100b) -+ _ASM_EXTABLE(25b,100b) -+ _ASM_EXTABLE(26b,100b) -+ _ASM_EXTABLE(27b,100b) -+ _ASM_EXTABLE(28b,100b) -+ _ASM_EXTABLE(29b,100b) -+ _ASM_EXTABLE(30b,100b) -+ _ASM_EXTABLE(31b,100b) -+ _ASM_EXTABLE(32b,100b) -+ _ASM_EXTABLE(33b,100b) -+ _ASM_EXTABLE(34b,100b) -+ _ASM_EXTABLE(35b,100b) -+ _ASM_EXTABLE(36b,100b) -+ _ASM_EXTABLE(37b,100b) -+ _ASM_EXTABLE(99b,101b) -+ : "=&c"(size), "=&D" (d0), "=&S" (d1) -+ : "1"(to), "2"(from), "0"(size) -+ : "eax", "edx", "memory"); -+ return size; -+} -+ -+static unsigned long __size_overflow(3) - __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) - { - int d0, d1; - __asm__ __volatile__( - " .align 2,0x90\n" -- "0: movl 32(%4), %%eax\n" -+ "0: "__copyuser_seg" movl 32(%4), %%eax\n" - " cmpl $67, %0\n" - " jbe 2f\n" -- "1: movl 64(%4), %%eax\n" -+ "1: "__copyuser_seg" movl 64(%4), %%eax\n" - " .align 2,0x90\n" -- "2: movl 0(%4), %%eax\n" -- "21: movl 4(%4), %%edx\n" -+ "2: "__copyuser_seg" movl 0(%4), %%eax\n" -+ "21: "__copyuser_seg" movl 4(%4), %%edx\n" - " movl %%eax, 0(%3)\n" - " movl %%edx, 4(%3)\n" -- "3: movl 8(%4), %%eax\n" -- "31: movl 12(%4),%%edx\n" -+ "3: "__copyuser_seg" movl 8(%4), %%eax\n" -+ "31: "__copyuser_seg" movl 12(%4),%%edx\n" - " movl %%eax, 8(%3)\n" - " movl %%edx, 12(%3)\n" -- "4: movl 16(%4), %%eax\n" -- "41: movl 20(%4), %%edx\n" -+ "4: "__copyuser_seg" movl 16(%4), %%eax\n" -+ "41: "__copyuser_seg" movl 20(%4), %%edx\n" - " movl %%eax, 16(%3)\n" - " movl %%edx, 20(%3)\n" -- "10: movl 24(%4), %%eax\n" -- "51: movl 28(%4), %%edx\n" -+ "10: "__copyuser_seg" movl 24(%4), %%eax\n" -+ "51: "__copyuser_seg" movl 28(%4), %%edx\n" - " movl %%eax, 24(%3)\n" - " movl %%edx, 28(%3)\n" -- "11: movl 32(%4), %%eax\n" -- "61: movl 36(%4), %%edx\n" -+ "11: "__copyuser_seg" movl 32(%4), %%eax\n" -+ "61: "__copyuser_seg" movl 36(%4), %%edx\n" - " movl %%eax, 32(%3)\n" - " movl %%edx, 36(%3)\n" -- "12: movl 40(%4), %%eax\n" -- "71: movl 44(%4), %%edx\n" -+ "12: "__copyuser_seg" movl 40(%4), %%eax\n" -+ "71: "__copyuser_seg" movl 44(%4), %%edx\n" - " movl %%eax, 40(%3)\n" - " movl %%edx, 44(%3)\n" -- "13: movl 48(%4), %%eax\n" -- "81: movl 52(%4), %%edx\n" -+ "13: "__copyuser_seg" movl 48(%4), %%eax\n" -+ "81: "__copyuser_seg" movl 52(%4), %%edx\n" - " movl %%eax, 48(%3)\n" - " movl %%edx, 52(%3)\n" -- "14: movl 56(%4), %%eax\n" -- "91: movl 60(%4), %%edx\n" -+ "14: "__copyuser_seg" movl 56(%4), %%eax\n" -+ "91: "__copyuser_seg" movl 60(%4), %%edx\n" - " movl %%eax, 56(%3)\n" - " movl %%edx, 60(%3)\n" - " addl $-64, %0\n" -@@ -252,9 +360,9 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) - " shrl $2, %0\n" - " andl $3, %%eax\n" - " cld\n" -- "6: rep; movsl\n" -+ "6: rep; "__copyuser_seg" movsl\n" - " movl %%eax,%0\n" -- "7: rep; movsb\n" -+ "7: rep; "__copyuser_seg" movsb\n" - "8:\n" - ".section .fixup,\"ax\"\n" - "9: lea 0(%%eax,%0,4),%0\n" -@@ -297,48 +405,48 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) - * hyoshiok@miraclelinux.com - */ - --static unsigned long __copy_user_zeroing_intel_nocache(void *to, -+static unsigned long __size_overflow(3) __copy_user_zeroing_intel_nocache(void *to, - const void __user *from, unsigned long size) - { - int d0, d1; - - __asm__ __volatile__( - " .align 2,0x90\n" -- "0: movl 32(%4), %%eax\n" -+ "0: "__copyuser_seg" movl 32(%4), %%eax\n" - " cmpl $67, %0\n" - " jbe 2f\n" -- "1: movl 64(%4), %%eax\n" -+ "1: "__copyuser_seg" movl 64(%4), %%eax\n" - " .align 2,0x90\n" -- "2: movl 0(%4), %%eax\n" -- "21: movl 4(%4), %%edx\n" -+ "2: "__copyuser_seg" movl 0(%4), %%eax\n" -+ "21: "__copyuser_seg" movl 4(%4), %%edx\n" - " movnti %%eax, 0(%3)\n" - " movnti %%edx, 4(%3)\n" -- "3: movl 8(%4), %%eax\n" -- "31: movl 12(%4),%%edx\n" -+ "3: "__copyuser_seg" movl 8(%4), %%eax\n" -+ "31: "__copyuser_seg" movl 12(%4),%%edx\n" - " movnti %%eax, 8(%3)\n" - " movnti %%edx, 12(%3)\n" -- "4: movl 16(%4), %%eax\n" -- "41: movl 20(%4), %%edx\n" -+ "4: "__copyuser_seg" movl 16(%4), %%eax\n" -+ "41: "__copyuser_seg" movl 20(%4), %%edx\n" - " movnti %%eax, 16(%3)\n" - " movnti %%edx, 20(%3)\n" -- "10: movl 24(%4), %%eax\n" -- "51: movl 28(%4), %%edx\n" -+ "10: "__copyuser_seg" movl 24(%4), %%eax\n" -+ "51: "__copyuser_seg" movl 28(%4), %%edx\n" - " movnti %%eax, 24(%3)\n" - " movnti %%edx, 28(%3)\n" -- "11: movl 32(%4), %%eax\n" -- "61: movl 36(%4), %%edx\n" -+ "11: "__copyuser_seg" movl 32(%4), %%eax\n" -+ "61: "__copyuser_seg" movl 36(%4), %%edx\n" - " movnti %%eax, 32(%3)\n" - " movnti %%edx, 36(%3)\n" -- "12: movl 40(%4), %%eax\n" -- "71: movl 44(%4), %%edx\n" -+ "12: "__copyuser_seg" movl 40(%4), %%eax\n" -+ "71: "__copyuser_seg" movl 44(%4), %%edx\n" - " movnti %%eax, 40(%3)\n" - " movnti %%edx, 44(%3)\n" -- "13: movl 48(%4), %%eax\n" -- "81: movl 52(%4), %%edx\n" -+ "13: "__copyuser_seg" movl 48(%4), %%eax\n" -+ "81: "__copyuser_seg" movl 52(%4), %%edx\n" - " movnti %%eax, 48(%3)\n" - " movnti %%edx, 52(%3)\n" -- "14: movl 56(%4), %%eax\n" -- "91: movl 60(%4), %%edx\n" -+ "14: "__copyuser_seg" movl 56(%4), %%eax\n" -+ "91: "__copyuser_seg" movl 60(%4), %%edx\n" - " movnti %%eax, 56(%3)\n" - " movnti %%edx, 60(%3)\n" - " addl $-64, %0\n" -@@ -351,9 +459,9 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to, - " shrl $2, %0\n" - " andl $3, %%eax\n" - " cld\n" -- "6: rep; movsl\n" -+ "6: rep; "__copyuser_seg" movsl\n" - " movl %%eax,%0\n" -- "7: rep; movsb\n" -+ "7: rep; "__copyuser_seg" movsb\n" - "8:\n" - ".section .fixup,\"ax\"\n" - "9: lea 0(%%eax,%0,4),%0\n" -@@ -391,48 +499,48 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to, - return size; - } - --static unsigned long __copy_user_intel_nocache(void *to, -+static unsigned long __size_overflow(3) __copy_user_intel_nocache(void *to, - const void __user *from, unsigned long size) - { - int d0, d1; - - __asm__ __volatile__( - " .align 2,0x90\n" -- "0: movl 32(%4), %%eax\n" -+ "0: "__copyuser_seg" movl 32(%4), %%eax\n" - " cmpl $67, %0\n" - " jbe 2f\n" -- "1: movl 64(%4), %%eax\n" -+ "1: "__copyuser_seg" movl 64(%4), %%eax\n" - " .align 2,0x90\n" -- "2: movl 0(%4), %%eax\n" -- "21: movl 4(%4), %%edx\n" -+ "2: "__copyuser_seg" movl 0(%4), %%eax\n" -+ "21: "__copyuser_seg" movl 4(%4), %%edx\n" - " movnti %%eax, 0(%3)\n" - " movnti %%edx, 4(%3)\n" -- "3: movl 8(%4), %%eax\n" -- "31: movl 12(%4),%%edx\n" -+ "3: "__copyuser_seg" movl 8(%4), %%eax\n" -+ "31: "__copyuser_seg" movl 12(%4),%%edx\n" - " movnti %%eax, 8(%3)\n" - " movnti %%edx, 12(%3)\n" -- "4: movl 16(%4), %%eax\n" -- "41: movl 20(%4), %%edx\n" -+ "4: "__copyuser_seg" movl 16(%4), %%eax\n" -+ "41: "__copyuser_seg" movl 20(%4), %%edx\n" - " movnti %%eax, 16(%3)\n" - " movnti %%edx, 20(%3)\n" -- "10: movl 24(%4), %%eax\n" -- "51: movl 28(%4), %%edx\n" -+ "10: "__copyuser_seg" movl 24(%4), %%eax\n" -+ "51: "__copyuser_seg" movl 28(%4), %%edx\n" - " movnti %%eax, 24(%3)\n" - " movnti %%edx, 28(%3)\n" -- "11: movl 32(%4), %%eax\n" -- "61: movl 36(%4), %%edx\n" -+ "11: "__copyuser_seg" movl 32(%4), %%eax\n" -+ "61: "__copyuser_seg" movl 36(%4), %%edx\n" - " movnti %%eax, 32(%3)\n" - " movnti %%edx, 36(%3)\n" -- "12: movl 40(%4), %%eax\n" -- "71: movl 44(%4), %%edx\n" -+ "12: "__copyuser_seg" movl 40(%4), %%eax\n" -+ "71: "__copyuser_seg" movl 44(%4), %%edx\n" - " movnti %%eax, 40(%3)\n" - " movnti %%edx, 44(%3)\n" -- "13: movl 48(%4), %%eax\n" -- "81: movl 52(%4), %%edx\n" -+ "13: "__copyuser_seg" movl 48(%4), %%eax\n" -+ "81: "__copyuser_seg" movl 52(%4), %%edx\n" - " movnti %%eax, 48(%3)\n" - " movnti %%edx, 52(%3)\n" -- "14: movl 56(%4), %%eax\n" -- "91: movl 60(%4), %%edx\n" -+ "14: "__copyuser_seg" movl 56(%4), %%eax\n" -+ "91: "__copyuser_seg" movl 60(%4), %%edx\n" - " movnti %%eax, 56(%3)\n" - " movnti %%edx, 60(%3)\n" - " addl $-64, %0\n" -@@ -445,9 +553,9 @@ static unsigned long __copy_user_intel_nocache(void *to, - " shrl $2, %0\n" - " andl $3, %%eax\n" - " cld\n" -- "6: rep; movsl\n" -+ "6: rep; "__copyuser_seg" movsl\n" - " movl %%eax,%0\n" -- "7: rep; movsb\n" -+ "7: rep; "__copyuser_seg" movsb\n" - "8:\n" - ".section .fixup,\"ax\"\n" - "9: lea 0(%%eax,%0,4),%0\n" -@@ -487,32 +595,36 @@ static unsigned long __copy_user_intel_nocache(void *to, - */ - unsigned long __copy_user_zeroing_intel(void *to, const void __user *from, - unsigned long size); --unsigned long __copy_user_intel(void __user *to, const void *from, -+unsigned long __generic_copy_to_user_intel(void __user *to, const void *from, -+ unsigned long size); -+unsigned long __generic_copy_from_user_intel(void *to, const void __user *from, - unsigned long size); - unsigned long __copy_user_zeroing_intel_nocache(void *to, - const void __user *from, unsigned long size); - #endif /* CONFIG_X86_INTEL_USERCOPY */ - - /* Generic arbitrary sized copy. */ --#define __copy_user(to, from, size) \ -+#define __copy_user(to, from, size, prefix, set, restore) \ - do { \ - int __d0, __d1, __d2; \ - __asm__ __volatile__( \ -+ set \ - " cmp $7,%0\n" \ - " jbe 1f\n" \ - " movl %1,%0\n" \ - " negl %0\n" \ - " andl $7,%0\n" \ - " subl %0,%3\n" \ -- "4: rep; movsb\n" \ -+ "4: rep; "prefix"movsb\n" \ - " movl %3,%0\n" \ - " shrl $2,%0\n" \ - " andl $3,%3\n" \ - " .align 2,0x90\n" \ -- "0: rep; movsl\n" \ -+ "0: rep; "prefix"movsl\n" \ - " movl %3,%0\n" \ -- "1: rep; movsb\n" \ -+ "1: rep; "prefix"movsb\n" \ - "2:\n" \ -+ restore \ - ".section .fixup,\"ax\"\n" \ - "5: addl %3,%0\n" \ - " jmp 2b\n" \ -@@ -537,14 +649,14 @@ do { \ - " negl %0\n" \ - " andl $7,%0\n" \ - " subl %0,%3\n" \ -- "4: rep; movsb\n" \ -+ "4: rep; "__copyuser_seg"movsb\n" \ - " movl %3,%0\n" \ - " shrl $2,%0\n" \ - " andl $3,%3\n" \ - " .align 2,0x90\n" \ -- "0: rep; movsl\n" \ -+ "0: rep; "__copyuser_seg"movsl\n" \ - " movl %3,%0\n" \ -- "1: rep; movsb\n" \ -+ "1: rep; "__copyuser_seg"movsb\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "5: addl %3,%0\n" \ -@@ -627,9 +739,9 @@ survive: - } - #endif - if (movsl_is_ok(to, from, n)) -- __copy_user(to, from, n); -+ __copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES); - else -- n = __copy_user_intel(to, from, n); -+ n = __generic_copy_to_user_intel(to, from, n); - return n; - } - EXPORT_SYMBOL(__copy_to_user_ll); -@@ -649,10 +761,9 @@ unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from, - unsigned long n) - { - if (movsl_is_ok(to, from, n)) -- __copy_user(to, from, n); -+ __copy_user(to, from, n, __copyuser_seg, "", ""); - else -- n = __copy_user_intel((void __user *)to, -- (const void *)from, n); -+ n = __generic_copy_from_user_intel(to, from, n); - return n; - } - EXPORT_SYMBOL(__copy_from_user_ll_nozero); -@@ -679,65 +790,50 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr - if (n > 64 && cpu_has_xmm2) - n = __copy_user_intel_nocache(to, from, n); - else -- __copy_user(to, from, n); -+ __copy_user(to, from, n, __copyuser_seg, "", ""); - #else -- __copy_user(to, from, n); -+ __copy_user(to, from, n, __copyuser_seg, "", ""); - #endif - return n; - } - EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero); - --/** -- * copy_to_user: - Copy a block of data into user space. -- * @to: Destination address, in user space. -- * @from: Source address, in kernel space. -- * @n: Number of bytes to copy. -- * -- * Context: User context only. This function may sleep. -- * -- * Copy data from kernel space to user space. -- * -- * Returns number of bytes that could not be copied. -- * On success, this will be zero. -- */ --unsigned long --copy_to_user(void __user *to, const void *from, unsigned long n) -+void copy_from_user_overflow(void) - { -- if (access_ok(VERIFY_WRITE, to, n)) -- n = __copy_to_user(to, from, n); -- return n; -+ WARN(1, "Buffer overflow detected!\n"); - } --EXPORT_SYMBOL(copy_to_user); -+EXPORT_SYMBOL(copy_from_user_overflow); - --/** -- * copy_from_user: - Copy a block of data from user space. -- * @to: Destination address, in kernel space. -- * @from: Source address, in user space. -- * @n: Number of bytes to copy. -- * -- * Context: User context only. This function may sleep. -- * -- * Copy data from user space to kernel space. -- * -- * Returns number of bytes that could not be copied. -- * On success, this will be zero. -- * -- * If some data could not be copied, this function will pad the copied -- * data to the requested size using zero bytes. -- */ --unsigned long --_copy_from_user(void *to, const void __user *from, unsigned long n) -+void copy_to_user_overflow(void) - { -- if (access_ok(VERIFY_READ, from, n)) -- n = __copy_from_user(to, from, n); -- else -- memset(to, 0, n); -- return n; -+ WARN(1, "Buffer overflow detected!\n"); - } --EXPORT_SYMBOL(_copy_from_user); -+EXPORT_SYMBOL(copy_to_user_overflow); - --void copy_from_user_overflow(void) -+#ifdef CONFIG_PAX_MEMORY_UDEREF -+void __set_fs(mm_segment_t x) - { -- WARN(1, "Buffer overflow detected!\n"); -+ switch (x.seg) { -+ case 0: -+ loadsegment(gs, 0); -+ break; -+ case TASK_SIZE_MAX: -+ loadsegment(gs, __USER_DS); -+ break; -+ case -1UL: -+ loadsegment(gs, __KERNEL_DS); -+ break; -+ default: -+ BUG(); -+ } -+ return; - } --EXPORT_SYMBOL(copy_from_user_overflow); -+EXPORT_SYMBOL(__set_fs); -+ -+void set_fs(mm_segment_t x) -+{ -+ current_thread_info()->addr_limit = x; -+ __set_fs(x); -+} -+EXPORT_SYMBOL(set_fs); -+#endif -diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c -index e5b130b..7d33980 100644 ---- a/arch/x86/lib/usercopy_64.c -+++ b/arch/x86/lib/usercopy_64.c -@@ -38,7 +38,7 @@ unsigned long __clear_user(void __user *addr, unsigned long size) - _ASM_EXTABLE(0b,3b) - _ASM_EXTABLE(1b,2b) - : [size8] "=&c"(size), [dst] "=&D" (__d0) -- : [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(addr), -+ : [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(____m(addr)), - [zero] "r" (0UL), [eight] "r" (8UL)); - return size; - } -@@ -52,12 +52,11 @@ unsigned long clear_user(void __user *to, unsigned long n) - } - EXPORT_SYMBOL(clear_user); - --unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len) -+unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len) - { -- if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { -- return copy_user_generic((__force void *)to, (__force void *)from, len); -- } -- return len; -+ if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) -+ return copy_user_generic((void __force_kernel *)____m(to), (void __force_kernel *)____m(from), len); -+ return len; - } - EXPORT_SYMBOL(copy_in_user); - -@@ -67,7 +66,7 @@ EXPORT_SYMBOL(copy_in_user); - * it is not necessary to optimize tail handling. - */ - unsigned long --copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) -+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) - { - char c; - unsigned zero_len; -@@ -84,3 +83,15 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) - break; - return len; - } -+ -+void copy_from_user_overflow(void) -+{ -+ WARN(1, "Buffer overflow detected!\n"); -+} -+EXPORT_SYMBOL(copy_from_user_overflow); -+ -+void copy_to_user_overflow(void) -+{ -+ WARN(1, "Buffer overflow detected!\n"); -+} -+EXPORT_SYMBOL(copy_to_user_overflow); -diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c -index 903ec1e..c4166b2 100644 ---- a/arch/x86/mm/extable.c -+++ b/arch/x86/mm/extable.c -@@ -6,12 +6,24 @@ - static inline unsigned long - ex_insn_addr(const struct exception_table_entry *x) - { -- return (unsigned long)&x->insn + x->insn; -+ unsigned long reloc = 0; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ -+ return (unsigned long)&x->insn + x->insn + reloc; - } - static inline unsigned long - ex_fixup_addr(const struct exception_table_entry *x) - { -- return (unsigned long)&x->fixup + x->fixup; -+ unsigned long reloc = 0; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ -+ return (unsigned long)&x->fixup + x->fixup + reloc; - } - - int fixup_exception(struct pt_regs *regs) -@@ -20,7 +32,7 @@ int fixup_exception(struct pt_regs *regs) - unsigned long new_ip; - - #ifdef CONFIG_PNPBIOS -- if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) { -+ if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) { - extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp; - extern u32 pnp_bios_is_utter_crap; - pnp_bios_is_utter_crap = 1; -@@ -145,6 +157,13 @@ void sort_extable(struct exception_table_entry *start, - i += 4; - p->fixup -= i; - i += 4; -+ -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ BUILD_BUG_ON(!IS_ENABLED(CONFIG_BUILDTIME_EXTABLE_SORT)); -+ p->insn -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+ p->fixup -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; -+#endif -+ - } - } - -diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c -index c6b10e2..808360d 100644 ---- a/arch/x86/mm/fault.c -+++ b/arch/x86/mm/fault.c -@@ -13,11 +13,18 @@ - #include /* perf_sw_event */ - #include /* hstate_index_to_shift */ - #include /* prefetchw */ -+#include -+#include - - #include /* dotraplinkage, ... */ - #include /* pgd_*(), ... */ - #include /* kmemcheck_*(), ... */ - #include /* VSYSCALL_START */ -+#include -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+#include -+#endif - - /* - * Page fault error code bits: -@@ -55,7 +62,7 @@ static inline int __kprobes notify_page_fault(struct pt_regs *regs) - int ret = 0; - - /* kprobe_running() needs smp_processor_id() */ -- if (kprobes_built_in() && !user_mode_vm(regs)) { -+ if (kprobes_built_in() && !user_mode(regs)) { - preempt_disable(); - if (kprobe_running() && kprobe_fault_handler(regs, 14)) - ret = 1; -@@ -116,7 +123,10 @@ check_prefetch_opcode(struct pt_regs *regs, unsigned char *instr, - return !instr_lo || (instr_lo>>1) == 1; - case 0x00: - /* Prefetch instruction is 0x0F0D or 0x0F18 */ -- if (probe_kernel_address(instr, opcode)) -+ if (user_mode(regs)) { -+ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) -+ return 0; -+ } else if (probe_kernel_address(instr, opcode)) - return 0; - - *prefetch = (instr_lo == 0xF) && -@@ -150,7 +160,10 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr) - while (instr < max_instr) { - unsigned char opcode; - -- if (probe_kernel_address(instr, opcode)) -+ if (user_mode(regs)) { -+ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) -+ break; -+ } else if (probe_kernel_address(instr, opcode)) - break; - - instr++; -@@ -181,6 +194,34 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address, - force_sig_info(si_signo, &info, tsk); - } - -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address); -+#endif -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+static int pax_handle_fetch_fault(struct pt_regs *regs); -+#endif -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address) -+{ -+ pgd_t *pgd; -+ pud_t *pud; -+ pmd_t *pmd; -+ -+ pgd = pgd_offset(mm, address); -+ if (!pgd_present(*pgd)) -+ return NULL; -+ pud = pud_offset(pgd, address); -+ if (!pud_present(*pud)) -+ return NULL; -+ pmd = pmd_offset(pud, address); -+ if (!pmd_present(*pmd)) -+ return NULL; -+ return pmd; -+} -+#endif -+ - DEFINE_SPINLOCK(pgd_lock); - LIST_HEAD(pgd_list); - -@@ -231,10 +272,22 @@ void vmalloc_sync_all(void) - for (address = VMALLOC_START & PMD_MASK; - address >= TASK_SIZE && address < FIXADDR_TOP; - address += PMD_SIZE) { -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ unsigned long cpu; -+#else - struct page *page; -+#endif - - spin_lock(&pgd_lock); -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { -+ pgd_t *pgd = get_cpu_pgd(cpu); -+ pmd_t *ret; -+#else - list_for_each_entry(page, &pgd_list, lru) { -+ pgd_t *pgd = page_address(page); - spinlock_t *pgt_lock; - pmd_t *ret; - -@@ -242,8 +295,13 @@ void vmalloc_sync_all(void) - pgt_lock = &pgd_page_get_mm(page)->page_table_lock; - - spin_lock(pgt_lock); -- ret = vmalloc_sync_one(page_address(page), address); -+#endif -+ -+ ret = vmalloc_sync_one(pgd, address); -+ -+#ifndef CONFIG_PAX_PER_CPU_PGD - spin_unlock(pgt_lock); -+#endif - - if (!ret) - break; -@@ -277,6 +335,11 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) - * an interrupt in the middle of a task switch.. - */ - pgd_paddr = read_cr3(); -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (pgd_paddr & PHYSICAL_PAGE_MASK)); -+#endif -+ - pmd_k = vmalloc_sync_one(__va(pgd_paddr), address); - if (!pmd_k) - return -1; -@@ -372,7 +435,14 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) - * happen within a race in page table update. In the later - * case just flush: - */ -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (read_cr3() & PHYSICAL_PAGE_MASK)); -+ pgd = pgd_offset_cpu(smp_processor_id(), address); -+#else - pgd = pgd_offset(current->active_mm, address); -+#endif -+ - pgd_ref = pgd_offset_k(address); - if (pgd_none(*pgd_ref)) - return -1; -@@ -540,7 +610,7 @@ static int is_errata93(struct pt_regs *regs, unsigned long address) - static int is_errata100(struct pt_regs *regs, unsigned long address) - { - #ifdef CONFIG_X86_64 -- if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32)) -+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32)) - return 1; - #endif - return 0; -@@ -567,7 +637,7 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address) - } - - static const char nx_warning[] = KERN_CRIT --"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n"; -+"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n"; - - static void - show_fault_oops(struct pt_regs *regs, unsigned long error_code, -@@ -576,15 +646,26 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, - if (!oops_may_print()) - return; - -- if (error_code & PF_INSTR) { -+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) { - unsigned int level; - - pte_t *pte = lookup_address(address, &level); - - if (pte && pte_present(*pte) && !pte_exec(*pte)) -- printk(nx_warning, from_kuid(&init_user_ns, current_uid())); -+ printk(nx_warning, from_kuid(&init_user_ns, current_uid()), current->comm, task_pid_nr(current)); - } - -+#ifdef CONFIG_PAX_KERNEXEC -+ if (init_mm.start_code <= address && address < init_mm.end_code) { -+ if (current->signal->curr_ip) -+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", -+ ¤t->signal->curr_ip, current->comm, task_pid_nr(current), current_uid(), current_euid()); -+ else -+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", -+ current->comm, task_pid_nr(current), current_uid(), current_euid()); -+ } -+#endif -+ - printk(KERN_ALERT "BUG: unable to handle kernel "); - if (address < PAGE_SIZE) - printk(KERN_CONT "NULL pointer dereference"); -@@ -751,6 +832,21 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code, - if (address >= TASK_SIZE) - error_code |= PF_PROT; - -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+ if (pax_is_fetch_fault(regs, error_code, address)) { -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+ switch (pax_handle_fetch_fault(regs)) { -+ case 2: -+ return; -+ } -+#endif -+ -+ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); -+ do_group_exit(SIGKILL); -+ } -+#endif -+ - if (likely(show_unhandled_signals)) - show_signal_msg(regs, error_code, address, tsk); - -@@ -846,7 +942,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address, - if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) { - printk(KERN_ERR - "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n", -- tsk->comm, tsk->pid, address); -+ tsk->comm, task_pid_nr(tsk), address); - code = BUS_MCEERR_AR; - } - #endif -@@ -902,6 +998,99 @@ static int spurious_fault_check(unsigned long error_code, pte_t *pte) - return 1; - } - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) -+static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code) -+{ -+ pte_t *pte; -+ pmd_t *pmd; -+ spinlock_t *ptl; -+ unsigned char pte_mask; -+ -+ if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) || -+ !(mm->pax_flags & MF_PAX_PAGEEXEC)) -+ return 0; -+ -+ /* PaX: it's our fault, let's handle it if we can */ -+ -+ /* PaX: take a look at read faults before acquiring any locks */ -+ if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) { -+ /* instruction fetch attempt from a protected page in user mode */ -+ up_read(&mm->mmap_sem); -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+ switch (pax_handle_fetch_fault(regs)) { -+ case 2: -+ return 1; -+ } -+#endif -+ -+ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); -+ do_group_exit(SIGKILL); -+ } -+ -+ pmd = pax_get_pmd(mm, address); -+ if (unlikely(!pmd)) -+ return 0; -+ -+ pte = pte_offset_map_lock(mm, pmd, address, &ptl); -+ if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) { -+ pte_unmap_unlock(pte, ptl); -+ return 0; -+ } -+ -+ if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) { -+ /* write attempt to a protected page in user mode */ -+ pte_unmap_unlock(pte, ptl); -+ return 0; -+ } -+ -+#ifdef CONFIG_SMP -+ if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask))) -+#else -+ if (likely(address > get_limit(regs->cs))) -+#endif -+ { -+ set_pte(pte, pte_mkread(*pte)); -+ __flush_tlb_one(address); -+ pte_unmap_unlock(pte, ptl); -+ up_read(&mm->mmap_sem); -+ return 1; -+ } -+ -+ pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1)); -+ -+ /* -+ * PaX: fill DTLB with user rights and retry -+ */ -+ __asm__ __volatile__ ( -+ "orb %2,(%1)\n" -+#if defined(CONFIG_M586) || defined(CONFIG_M586TSC) -+/* -+ * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's -+ * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any* -+ * page fault when examined during a TLB load attempt. this is true not only -+ * for PTEs holding a non-present entry but also present entries that will -+ * raise a page fault (such as those set up by PaX, or the copy-on-write -+ * mechanism). in effect it means that we do *not* need to flush the TLBs -+ * for our target pages since their PTEs are simply not in the TLBs at all. -+ -+ * the best thing in omitting it is that we gain around 15-20% speed in the -+ * fast path of the page fault handler and can get rid of tracing since we -+ * can no longer flush unintended entries. -+ */ -+ "invlpg (%0)\n" -+#endif -+ __copyuser_seg"testb $0,(%0)\n" -+ "xorb %3,(%1)\n" -+ : -+ : "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER) -+ : "memory", "cc"); -+ pte_unmap_unlock(pte, ptl); -+ up_read(&mm->mmap_sem); -+ return 1; -+} -+#endif -+ - /* - * Handle a spurious fault caused by a stale TLB entry. - * -@@ -974,6 +1163,9 @@ int show_unhandled_signals = 1; - static inline int - access_error(unsigned long error_code, struct vm_area_struct *vma) - { -+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC)) -+ return 1; -+ - if (error_code & PF_WRITE) { - /* write, present and write, not present: */ - if (unlikely(!(vma->vm_flags & VM_WRITE))) -@@ -1007,19 +1199,34 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code) - { - struct vm_area_struct *vma; - struct task_struct *tsk; -- unsigned long address; - struct mm_struct *mm; - int fault; - int write = error_code & PF_WRITE; - unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | - (write ? FAULT_FLAG_WRITE : 0); - -+ /* Get the faulting address: */ -+ unsigned long address = read_cr2(); -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ if (!user_mode(regs) && address < 2 * PAX_USER_SHADOW_BASE) { -+ if (!search_exception_tables(regs->ip)) { -+ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); -+ bad_area_nosemaphore(regs, error_code, address); -+ return; -+ } -+ if (address < PAX_USER_SHADOW_BASE) { -+ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); -+ printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip); -+ show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR); -+ } else -+ address -= PAX_USER_SHADOW_BASE; -+ } -+#endif -+ - tsk = current; - mm = tsk->mm; - -- /* Get the faulting address: */ -- address = read_cr2(); -- - /* - * Detect and handle instructions that would cause a page fault for - * both a tracked kernel page and a userspace page. -@@ -1079,7 +1286,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code) - * User-mode registers count as a user access even for any - * potential system fault or CPU buglet: - */ -- if (user_mode_vm(regs)) { -+ if (user_mode(regs)) { - local_irq_enable(); - error_code |= PF_USER; - } else { -@@ -1134,6 +1341,11 @@ retry: - might_sleep(); - } - -+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) -+ if (pax_handle_pageexec_fault(regs, mm, address, error_code)) -+ return; -+#endif -+ - vma = find_vma(mm, address); - if (unlikely(!vma)) { - bad_area(regs, error_code, address); -@@ -1145,18 +1357,24 @@ retry: - bad_area(regs, error_code, address); - return; - } -- if (error_code & PF_USER) { -- /* -- * Accessing the stack below %sp is always a bug. -- * The large cushion allows instructions like enter -- * and pusha to work. ("enter $65535, $31" pushes -- * 32 pointers and then decrements %sp by 65535.) -- */ -- if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) { -- bad_area(regs, error_code, address); -- return; -- } -+ /* -+ * Accessing the stack below %sp is always a bug. -+ * The large cushion allows instructions like enter -+ * and pusha to work. ("enter $65535, $31" pushes -+ * 32 pointers and then decrements %sp by 65535.) -+ */ -+ if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) { -+ bad_area(regs, error_code, address); -+ return; - } -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) { -+ bad_area(regs, error_code, address); -+ return; -+ } -+#endif -+ - if (unlikely(expand_stack(vma, address))) { - bad_area(regs, error_code, address); - return; -@@ -1211,3 +1429,292 @@ good_area: - - up_read(&mm->mmap_sem); - } -+ -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address) -+{ -+ struct mm_struct *mm = current->mm; -+ unsigned long ip = regs->ip; -+ -+ if (v8086_mode(regs)) -+ ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff); -+ -+#ifdef CONFIG_PAX_PAGEEXEC -+ if (mm->pax_flags & MF_PAX_PAGEEXEC) { -+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) -+ return true; -+ if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address) -+ return true; -+ return false; -+ } -+#endif -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) { -+ if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address)) -+ return true; -+ return false; -+ } -+#endif -+ -+ return false; -+} -+#endif -+ -+#ifdef CONFIG_PAX_EMUTRAMP -+static int pax_handle_fetch_fault_32(struct pt_regs *regs) -+{ -+ int err; -+ -+ do { /* PaX: libffi trampoline emulation */ -+ unsigned char mov, jmp; -+ unsigned int addr1, addr2; -+ -+#ifdef CONFIG_X86_64 -+ if ((regs->ip + 9) >> 32) -+ break; -+#endif -+ -+ err = get_user(mov, (unsigned char __user *)regs->ip); -+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); -+ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); -+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); -+ -+ if (err) -+ break; -+ -+ if (mov == 0xB8 && jmp == 0xE9) { -+ regs->ax = addr1; -+ regs->ip = (unsigned int)(regs->ip + addr2 + 10); -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: gcc trampoline emulation #1 */ -+ unsigned char mov1, mov2; -+ unsigned short jmp; -+ unsigned int addr1, addr2; -+ -+#ifdef CONFIG_X86_64 -+ if ((regs->ip + 11) >> 32) -+ break; -+#endif -+ -+ err = get_user(mov1, (unsigned char __user *)regs->ip); -+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); -+ err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5)); -+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); -+ err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10)); -+ -+ if (err) -+ break; -+ -+ if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) { -+ regs->cx = addr1; -+ regs->ax = addr2; -+ regs->ip = addr2; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: gcc trampoline emulation #2 */ -+ unsigned char mov, jmp; -+ unsigned int addr1, addr2; -+ -+#ifdef CONFIG_X86_64 -+ if ((regs->ip + 9) >> 32) -+ break; -+#endif -+ -+ err = get_user(mov, (unsigned char __user *)regs->ip); -+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); -+ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); -+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); -+ -+ if (err) -+ break; -+ -+ if (mov == 0xB9 && jmp == 0xE9) { -+ regs->cx = addr1; -+ regs->ip = (unsigned int)(regs->ip + addr2 + 10); -+ return 2; -+ } -+ } while (0); -+ -+ return 1; /* PaX in action */ -+} -+ -+#ifdef CONFIG_X86_64 -+static int pax_handle_fetch_fault_64(struct pt_regs *regs) -+{ -+ int err; -+ -+ do { /* PaX: libffi trampoline emulation */ -+ unsigned short mov1, mov2, jmp1; -+ unsigned char stcclc, jmp2; -+ unsigned long addr1, addr2; -+ -+ err = get_user(mov1, (unsigned short __user *)regs->ip); -+ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); -+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); -+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); -+ err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20)); -+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21)); -+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23)); -+ -+ if (err) -+ break; -+ -+ if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) { -+ regs->r11 = addr1; -+ regs->r10 = addr2; -+ if (stcclc == 0xF8) -+ regs->flags &= ~X86_EFLAGS_CF; -+ else -+ regs->flags |= X86_EFLAGS_CF; -+ regs->ip = addr1; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: gcc trampoline emulation #1 */ -+ unsigned short mov1, mov2, jmp1; -+ unsigned char jmp2; -+ unsigned int addr1; -+ unsigned long addr2; -+ -+ err = get_user(mov1, (unsigned short __user *)regs->ip); -+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2)); -+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6)); -+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8)); -+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16)); -+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18)); -+ -+ if (err) -+ break; -+ -+ if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { -+ regs->r11 = addr1; -+ regs->r10 = addr2; -+ regs->ip = addr1; -+ return 2; -+ } -+ } while (0); -+ -+ do { /* PaX: gcc trampoline emulation #2 */ -+ unsigned short mov1, mov2, jmp1; -+ unsigned char jmp2; -+ unsigned long addr1, addr2; -+ -+ err = get_user(mov1, (unsigned short __user *)regs->ip); -+ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); -+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); -+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); -+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20)); -+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22)); -+ -+ if (err) -+ break; -+ -+ if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { -+ regs->r11 = addr1; -+ regs->r10 = addr2; -+ regs->ip = addr1; -+ return 2; -+ } -+ } while (0); -+ -+ return 1; /* PaX in action */ -+} -+#endif -+ -+/* -+ * PaX: decide what to do with offenders (regs->ip = fault address) -+ * -+ * returns 1 when task should be killed -+ * 2 when gcc trampoline was detected -+ */ -+static int pax_handle_fetch_fault(struct pt_regs *regs) -+{ -+ if (v8086_mode(regs)) -+ return 1; -+ -+ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) -+ return 1; -+ -+#ifdef CONFIG_X86_32 -+ return pax_handle_fetch_fault_32(regs); -+#else -+ if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) -+ return pax_handle_fetch_fault_32(regs); -+ else -+ return pax_handle_fetch_fault_64(regs); -+#endif -+} -+#endif -+ -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) -+{ -+ long i; -+ -+ printk(KERN_ERR "PAX: bytes at PC: "); -+ for (i = 0; i < 20; i++) { -+ unsigned char c; -+ if (get_user(c, (unsigned char __force_user *)pc+i)) -+ printk(KERN_CONT "?? "); -+ else -+ printk(KERN_CONT "%02x ", c); -+ } -+ printk("\n"); -+ -+ printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long)); -+ for (i = -1; i < 80 / (long)sizeof(long); i++) { -+ unsigned long c; -+ if (get_user(c, (unsigned long __force_user *)sp+i)) { -+#ifdef CONFIG_X86_32 -+ printk(KERN_CONT "???????? "); -+#else -+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) -+ printk(KERN_CONT "???????? ???????? "); -+ else -+ printk(KERN_CONT "???????????????? "); -+#endif -+ } else { -+#ifdef CONFIG_X86_64 -+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) { -+ printk(KERN_CONT "%08x ", (unsigned int)c); -+ printk(KERN_CONT "%08x ", (unsigned int)(c >> 32)); -+ } else -+#endif -+ printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c); -+ } -+ } -+ printk("\n"); -+} -+#endif -+ -+/** -+ * probe_kernel_write(): safely attempt to write to a location -+ * @dst: address to write to -+ * @src: pointer to the data that shall be written -+ * @size: size of the data chunk -+ * -+ * Safely write to address @dst from the buffer at @src. If a kernel fault -+ * happens, handle that and return -EFAULT. -+ */ -+long notrace probe_kernel_write(void *dst, const void *src, size_t size) -+{ -+ long ret; -+ mm_segment_t old_fs = get_fs(); -+ -+ set_fs(KERNEL_DS); -+ pagefault_disable(); -+ pax_open_kernel(); -+ ret = __copy_to_user_inatomic((void __force_user *)dst, src, size); -+ pax_close_kernel(); -+ pagefault_enable(); -+ set_fs(old_fs); -+ -+ return ret ? -EFAULT : 0; -+} -diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c -index dd74e46..7d26398 100644 ---- a/arch/x86/mm/gup.c -+++ b/arch/x86/mm/gup.c -@@ -255,7 +255,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, - addr = start; - len = (unsigned long) nr_pages << PAGE_SHIFT; - end = start + len; -- if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, -+ if (unlikely(!__access_ok(write ? VERIFY_WRITE : VERIFY_READ, - (void __user *)start, len))) - return 0; - -diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c -index 6f31ee5..8ee4164 100644 ---- a/arch/x86/mm/highmem_32.c -+++ b/arch/x86/mm/highmem_32.c -@@ -44,7 +44,11 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) - idx = type + KM_TYPE_NR*smp_processor_id(); - vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); - BUG_ON(!pte_none(*(kmap_pte-idx))); -+ -+ pax_open_kernel(); - set_pte(kmap_pte-idx, mk_pte(page, prot)); -+ pax_close_kernel(); -+ - arch_flush_lazy_mmu_mode(); - - return (void *)vaddr; -diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c -index b91e485..d00e7c9 100644 ---- a/arch/x86/mm/hugetlbpage.c -+++ b/arch/x86/mm/hugetlbpage.c -@@ -277,13 +277,20 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, - struct hstate *h = hstate_file(file); - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; -- unsigned long start_addr; -+ unsigned long start_addr, pax_task_size = TASK_SIZE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif -+ -+ pax_task_size -= PAGE_SIZE; - - if (len > mm->cached_hole_size) { -- start_addr = mm->free_area_cache; -+ start_addr = mm->free_area_cache; - } else { -- start_addr = TASK_UNMAPPED_BASE; -- mm->cached_hole_size = 0; -+ start_addr = mm->mmap_base; -+ mm->cached_hole_size = 0; - } - - full_search: -@@ -291,26 +298,27 @@ full_search: - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ -- if (TASK_SIZE - len < addr) { -+ if (pax_task_size - len < addr) { - /* - * Start a new search - just in case we missed - * some holes. - */ -- if (start_addr != TASK_UNMAPPED_BASE) { -- start_addr = TASK_UNMAPPED_BASE; -+ if (start_addr != mm->mmap_base) { -+ start_addr = mm->mmap_base; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } -- if (!vma || addr + len <= vma->vm_start) { -- mm->free_area_cache = addr + len; -- return addr; -- } -+ if (check_heap_stack_gap(vma, addr, len)) -+ break; - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - addr = ALIGN(vma->vm_end, huge_page_size(h)); - } -+ -+ mm->free_area_cache = addr + len; -+ return addr; - } - - static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, -@@ -321,9 +329,8 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; - unsigned long base = mm->mmap_base; -- unsigned long addr = addr0; -+ unsigned long addr; - unsigned long largest_hole = mm->cached_hole_size; -- unsigned long start_addr; - - /* don't allow allocations above current base */ - if (mm->free_area_cache > base) -@@ -333,16 +340,15 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, - largest_hole = 0; - mm->free_area_cache = base; - } --try_again: -- start_addr = mm->free_area_cache; - - /* make sure it can fit in the remaining address space */ - if (mm->free_area_cache < len) - goto fail; - - /* either no address requested or can't fit in requested address hole */ -- addr = (mm->free_area_cache - len) & huge_page_mask(h); -+ addr = mm->free_area_cache - len; - do { -+ addr &= huge_page_mask(h); - /* - * Lookup failure means no vma is above this address, - * i.e. return with success: -@@ -351,10 +357,10 @@ try_again: - if (!vma) - return addr; - -- if (addr + len <= vma->vm_start) { -+ if (check_heap_stack_gap(vma, addr, len)) { - /* remember the address as a hint for next time */ -- mm->cached_hole_size = largest_hole; -- return (mm->free_area_cache = addr); -+ mm->cached_hole_size = largest_hole; -+ return (mm->free_area_cache = addr); - } else if (mm->free_area_cache == vma->vm_end) { - /* pull free_area_cache down to the first hole */ - mm->free_area_cache = vma->vm_start; -@@ -363,29 +369,34 @@ try_again: - - /* remember the largest hole we saw so far */ - if (addr + largest_hole < vma->vm_start) -- largest_hole = vma->vm_start - addr; -+ largest_hole = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ -- addr = (vma->vm_start - len) & huge_page_mask(h); -- } while (len <= vma->vm_start); -+ addr = skip_heap_stack_gap(vma, len); -+ } while (!IS_ERR_VALUE(addr)); - - fail: - /* -- * if hint left us with no space for the requested -- * mapping then try again: -- */ -- if (start_addr != base) { -- mm->free_area_cache = base; -- largest_hole = 0; -- goto try_again; -- } -- /* - * A failed mmap() very likely causes application failure, - * so fall back to the bottom-up function here. This scenario - * can happen with large stack limits and large mmap() - * allocations. - */ -- mm->free_area_cache = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; -+ else -+#endif -+ -+ mm->mmap_base = TASK_UNMAPPED_BASE; -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ -+ mm->free_area_cache = mm->mmap_base; - mm->cached_hole_size = ~0UL; - addr = hugetlb_get_unmapped_area_bottomup(file, addr0, - len, pgoff, flags); -@@ -393,6 +404,7 @@ fail: - /* - * Restore the topdown base: - */ -+ mm->mmap_base = base; - mm->free_area_cache = base; - mm->cached_hole_size = ~0UL; - -@@ -406,10 +418,19 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - struct hstate *h = hstate_file(file); - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma; -+ unsigned long pax_task_size = TASK_SIZE; - - if (len & ~huge_page_mask(h)) - return -EINVAL; -- if (len > TASK_SIZE) -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif -+ -+ pax_task_size -= PAGE_SIZE; -+ -+ if (len > pax_task_size) - return -ENOMEM; - - if (flags & MAP_FIXED) { -@@ -421,8 +442,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - if (addr) { - addr = ALIGN(addr, huge_page_size(h)); - vma = find_vma(mm, addr); -- if (TASK_SIZE - len >= addr && -- (!vma || addr + len <= vma->vm_start)) -+ if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) - return addr; - } - if (mm->get_unmapped_area == arch_get_unmapped_area) -diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c -index d7aea41..0fc945b 100644 ---- a/arch/x86/mm/init.c -+++ b/arch/x86/mm/init.c -@@ -4,6 +4,7 @@ - #include - #include - #include /* for max_low_pfn */ -+#include - - #include - #include -@@ -16,6 +17,8 @@ - #include - #include - #include /* for MAX_DMA_PFN */ -+#include -+#include - - unsigned long __initdata pgt_buf_start; - unsigned long __meminitdata pgt_buf_end; -@@ -44,7 +47,7 @@ static void __init find_early_table_space(struct map_range *mr, int nr_range) - { - int i; - unsigned long puds = 0, pmds = 0, ptes = 0, tables; -- unsigned long start = 0, good_end; -+ unsigned long start = 0x100000, good_end; - phys_addr_t base; - - for (i = 0; i < nr_range; i++) { -@@ -321,10 +324,40 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, - * Access has to be given to non-kernel-ram areas as well, these contain the PCI - * mmio resources as well as potential bios/acpi data regions. - */ -+ -+#ifdef CONFIG_GRKERNSEC_KMEM -+static unsigned int ebda_start __read_only; -+static unsigned int ebda_end __read_only; -+#endif -+ - int devmem_is_allowed(unsigned long pagenr) - { -- if (pagenr < 256) -+#ifdef CONFIG_GRKERNSEC_KMEM -+ /* allow BDA */ -+ if (!pagenr) -+ return 1; -+ /* allow EBDA */ -+ if (pagenr >= ebda_start && pagenr < ebda_end) -+ return 1; -+ /* if tboot is in use, allow access to its hardcoded serial log range */ -+ if (tboot_enabled() && ((0x60000 >> PAGE_SHIFT) <= pagenr) && (pagenr < (0x68000 >> PAGE_SHIFT))) -+ return 1; -+#else -+ if (!pagenr) - return 1; -+#ifdef CONFIG_VM86 -+ if (pagenr < (ISA_START_ADDRESS >> PAGE_SHIFT)) -+ return 1; -+#endif -+#endif -+ -+ if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT)) -+ return 1; -+#ifdef CONFIG_GRKERNSEC_KMEM -+ /* throw out everything else below 1MB */ -+ if (pagenr <= 256) -+ return 0; -+#endif - if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) - return 0; - if (!page_is_ram(pagenr)) -@@ -381,8 +414,117 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) - #endif - } - -+#ifdef CONFIG_GRKERNSEC_KMEM -+static inline void gr_init_ebda(void) -+{ -+ unsigned int ebda_addr; -+ unsigned int ebda_size = 0; -+ -+ ebda_addr = get_bios_ebda(); -+ if (ebda_addr) { -+ ebda_size = *(unsigned char *)phys_to_virt(ebda_addr); -+ ebda_size <<= 10; -+ } -+ if (ebda_addr && ebda_size) { -+ ebda_start = ebda_addr >> PAGE_SHIFT; -+ ebda_end = min((unsigned int)PAGE_ALIGN(ebda_addr + ebda_size), (unsigned int)0xa0000) >> PAGE_SHIFT; -+ } else { -+ ebda_start = 0x9f000 >> PAGE_SHIFT; -+ ebda_end = 0xa0000 >> PAGE_SHIFT; -+ } -+} -+#else -+static inline void gr_init_ebda(void) { } -+#endif -+ - void free_initmem(void) - { -+#ifdef CONFIG_PAX_KERNEXEC -+#ifdef CONFIG_X86_32 -+ /* PaX: limit KERNEL_CS to actual size */ -+ unsigned long addr, limit; -+ struct desc_struct d; -+ int cpu; -+#else -+ pgd_t *pgd; -+ pud_t *pud; -+ pmd_t *pmd; -+ unsigned long addr, end; -+#endif -+#endif -+ -+ gr_init_ebda(); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+#ifdef CONFIG_X86_32 -+ limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext; -+ limit = (limit - 1UL) >> PAGE_SHIFT; -+ -+ memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE); -+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) { -+ pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC); -+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S); -+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEXEC_KERNEL_CS, &d, DESCTYPE_S); -+ } -+ -+ /* PaX: make KERNEL_CS read-only */ -+ addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text)); -+ if (!paravirt_enabled()) -+ set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT); -+/* -+ for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) { -+ pgd = pgd_offset_k(addr); -+ pud = pud_offset(pgd, addr); -+ pmd = pmd_offset(pud, addr); -+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); -+ } -+*/ -+#ifdef CONFIG_X86_PAE -+ set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT); -+/* -+ for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) { -+ pgd = pgd_offset_k(addr); -+ pud = pud_offset(pgd, addr); -+ pmd = pmd_offset(pud, addr); -+ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); -+ } -+*/ -+#endif -+ -+#ifdef CONFIG_MODULES -+ set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT); -+#endif -+ -+#else -+ /* PaX: make kernel code/rodata read-only, rest non-executable */ -+ for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) { -+ pgd = pgd_offset_k(addr); -+ pud = pud_offset(pgd, addr); -+ pmd = pmd_offset(pud, addr); -+ if (!pmd_present(*pmd)) -+ continue; -+ if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata) -+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); -+ else -+ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); -+ } -+ -+ addr = (unsigned long)__va(__pa(__START_KERNEL_map)); -+ end = addr + KERNEL_IMAGE_SIZE; -+ for (; addr < end; addr += PMD_SIZE) { -+ pgd = pgd_offset_k(addr); -+ pud = pud_offset(pgd, addr); -+ pmd = pmd_offset(pud, addr); -+ if (!pmd_present(*pmd)) -+ continue; -+ if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata))) -+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); -+ } -+#endif -+ -+ flush_tlb_all(); -+#endif -+ - free_init_pages("unused kernel memory", - (unsigned long)(&__init_begin), - (unsigned long)(&__init_end)); -diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c -index 575d86f..4987469 100644 ---- a/arch/x86/mm/init_32.c -+++ b/arch/x86/mm/init_32.c -@@ -73,36 +73,6 @@ static __init void *alloc_low_page(void) - } - - /* -- * Creates a middle page table and puts a pointer to it in the -- * given global directory entry. This only returns the gd entry -- * in non-PAE compilation mode, since the middle layer is folded. -- */ --static pmd_t * __init one_md_table_init(pgd_t *pgd) --{ -- pud_t *pud; -- pmd_t *pmd_table; -- --#ifdef CONFIG_X86_PAE -- if (!(pgd_val(*pgd) & _PAGE_PRESENT)) { -- if (after_bootmem) -- pmd_table = (pmd_t *)alloc_bootmem_pages(PAGE_SIZE); -- else -- pmd_table = (pmd_t *)alloc_low_page(); -- paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT); -- set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); -- pud = pud_offset(pgd, 0); -- BUG_ON(pmd_table != pmd_offset(pud, 0)); -- -- return pmd_table; -- } --#endif -- pud = pud_offset(pgd, 0); -- pmd_table = pmd_offset(pud, 0); -- -- return pmd_table; --} -- --/* - * Create a page table and place a pointer to it in a middle page - * directory entry: - */ -@@ -122,13 +92,28 @@ static pte_t * __init one_page_table_init(pmd_t *pmd) - page_table = (pte_t *)alloc_low_page(); - - paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT); -+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) -+ set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE)); -+#else - set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); -+#endif - BUG_ON(page_table != pte_offset_kernel(pmd, 0)); - } - - return pte_offset_kernel(pmd, 0); - } - -+static pmd_t * __init one_md_table_init(pgd_t *pgd) -+{ -+ pud_t *pud; -+ pmd_t *pmd_table; -+ -+ pud = pud_offset(pgd, 0); -+ pmd_table = pmd_offset(pud, 0); -+ -+ return pmd_table; -+} -+ - pmd_t * __init populate_extra_pmd(unsigned long vaddr) - { - int pgd_idx = pgd_index(vaddr); -@@ -202,6 +187,7 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) - int pgd_idx, pmd_idx; - unsigned long vaddr; - pgd_t *pgd; -+ pud_t *pud; - pmd_t *pmd; - pte_t *pte = NULL; - -@@ -211,8 +197,13 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) - pgd = pgd_base + pgd_idx; - - for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) { -- pmd = one_md_table_init(pgd); -- pmd = pmd + pmd_index(vaddr); -+ pud = pud_offset(pgd, vaddr); -+ pmd = pmd_offset(pud, vaddr); -+ -+#ifdef CONFIG_X86_PAE -+ paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT); -+#endif -+ - for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); - pmd++, pmd_idx++) { - pte = page_table_kmap_check(one_page_table_init(pmd), -@@ -224,11 +215,20 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) - } - } - --static inline int is_kernel_text(unsigned long addr) -+static inline int is_kernel_text(unsigned long start, unsigned long end) - { -- if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end) -- return 1; -- return 0; -+ if ((start > ktla_ktva((unsigned long)_etext) || -+ end <= ktla_ktva((unsigned long)_stext)) && -+ (start > ktla_ktva((unsigned long)_einittext) || -+ end <= ktla_ktva((unsigned long)_sinittext)) && -+ -+#ifdef CONFIG_ACPI_SLEEP -+ (start > (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) && -+#endif -+ -+ (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000))) -+ return 0; -+ return 1; - } - - /* -@@ -245,9 +245,10 @@ kernel_physical_mapping_init(unsigned long start, - unsigned long last_map_addr = end; - unsigned long start_pfn, end_pfn; - pgd_t *pgd_base = swapper_pg_dir; -- int pgd_idx, pmd_idx, pte_ofs; -+ unsigned int pgd_idx, pmd_idx, pte_ofs; - unsigned long pfn; - pgd_t *pgd; -+ pud_t *pud; - pmd_t *pmd; - pte_t *pte; - unsigned pages_2m, pages_4k; -@@ -280,8 +281,13 @@ repeat: - pfn = start_pfn; - pgd_idx = pgd_index((pfn<> PAGE_SHIFT); -+#endif - - if (pfn >= end_pfn) - continue; -@@ -293,14 +299,13 @@ repeat: - #endif - for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn; - pmd++, pmd_idx++) { -- unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET; -+ unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET; - - /* - * Map with big pages if possible, otherwise - * create normal page tables: - */ - if (use_pse) { -- unsigned int addr2; - pgprot_t prot = PAGE_KERNEL_LARGE; - /* - * first pass will use the same initial -@@ -310,11 +315,7 @@ repeat: - __pgprot(PTE_IDENT_ATTR | - _PAGE_PSE); - -- addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE + -- PAGE_OFFSET + PAGE_SIZE-1; -- -- if (is_kernel_text(addr) || -- is_kernel_text(addr2)) -+ if (is_kernel_text(address, address + PMD_SIZE)) - prot = PAGE_KERNEL_LARGE_EXEC; - - pages_2m++; -@@ -331,7 +332,7 @@ repeat: - pte_ofs = pte_index((pfn<> 10, - -- (unsigned long)&_etext, (unsigned long)&_edata, -- ((unsigned long)&_edata - (unsigned long)&_etext) >> 10, -+ (unsigned long)&_sdata, (unsigned long)&_edata, -+ ((unsigned long)&_edata - (unsigned long)&_sdata) >> 10, - -- (unsigned long)&_text, (unsigned long)&_etext, -+ ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext), - ((unsigned long)&_etext - (unsigned long)&_text) >> 10); - - /* -@@ -882,6 +887,7 @@ void set_kernel_text_rw(void) - if (!kernel_set_to_readonly) - return; - -+ start = ktla_ktva(start); - pr_debug("Set kernel text: %lx - %lx for read write\n", - start, start+size); - -@@ -896,6 +902,7 @@ void set_kernel_text_ro(void) - if (!kernel_set_to_readonly) - return; - -+ start = ktla_ktva(start); - pr_debug("Set kernel text: %lx - %lx for read only\n", - start, start+size); - -@@ -924,6 +931,7 @@ void mark_rodata_ro(void) - unsigned long start = PFN_ALIGN(_text); - unsigned long size = PFN_ALIGN(_etext) - start; - -+ start = ktla_ktva(start); - set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT); - printk(KERN_INFO "Write protecting the kernel text: %luk\n", - size >> 10); -diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c -index ce42da7..678a54e 100644 ---- a/arch/x86/mm/init_64.c -+++ b/arch/x86/mm/init_64.c -@@ -74,7 +74,7 @@ early_param("gbpages", parse_direct_gbpages_on); - * around without checking the pgd every time. - */ - --pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP; -+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP); - EXPORT_SYMBOL_GPL(__supported_pte_mask); - - int force_personality32; -@@ -107,12 +107,22 @@ void sync_global_pgds(unsigned long start, unsigned long end) - - for (address = start; address <= end; address += PGDIR_SIZE) { - const pgd_t *pgd_ref = pgd_offset_k(address); -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ unsigned long cpu; -+#else - struct page *page; -+#endif - - if (pgd_none(*pgd_ref)) - continue; - - spin_lock(&pgd_lock); -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { -+ pgd_t *pgd = pgd_offset_cpu(cpu, address); -+#else - list_for_each_entry(page, &pgd_list, lru) { - pgd_t *pgd; - spinlock_t *pgt_lock; -@@ -121,6 +131,7 @@ void sync_global_pgds(unsigned long start, unsigned long end) - /* the pgt_lock only for Xen */ - pgt_lock = &pgd_page_get_mm(page)->page_table_lock; - spin_lock(pgt_lock); -+#endif - - if (pgd_none(*pgd)) - set_pgd(pgd, *pgd_ref); -@@ -128,7 +139,10 @@ void sync_global_pgds(unsigned long start, unsigned long end) - BUG_ON(pgd_page_vaddr(*pgd) - != pgd_page_vaddr(*pgd_ref)); - -+#ifndef CONFIG_PAX_PER_CPU_PGD - spin_unlock(pgt_lock); -+#endif -+ - } - spin_unlock(&pgd_lock); - } -@@ -161,7 +175,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsigned long vaddr) - { - if (pgd_none(*pgd)) { - pud_t *pud = (pud_t *)spp_getpage(); -- pgd_populate(&init_mm, pgd, pud); -+ pgd_populate_kernel(&init_mm, pgd, pud); - if (pud != pud_offset(pgd, 0)) - printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n", - pud, pud_offset(pgd, 0)); -@@ -173,7 +187,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsigned long vaddr) - { - if (pud_none(*pud)) { - pmd_t *pmd = (pmd_t *) spp_getpage(); -- pud_populate(&init_mm, pud, pmd); -+ pud_populate_kernel(&init_mm, pud, pmd); - if (pmd != pmd_offset(pud, 0)) - printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n", - pmd, pmd_offset(pud, 0)); -@@ -202,7 +216,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte) - pmd = fill_pmd(pud, vaddr); - pte = fill_pte(pmd, vaddr); - -+ pax_open_kernel(); - set_pte(pte, new_pte); -+ pax_close_kernel(); - - /* - * It's enough to flush this one mapping. -@@ -261,14 +277,12 @@ static void __init __init_extra_mapping(unsigned long phys, unsigned long size, - pgd = pgd_offset_k((unsigned long)__va(phys)); - if (pgd_none(*pgd)) { - pud = (pud_t *) spp_getpage(); -- set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE | -- _PAGE_USER)); -+ set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE)); - } - pud = pud_offset(pgd, (unsigned long)__va(phys)); - if (pud_none(*pud)) { - pmd = (pmd_t *) spp_getpage(); -- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | -- _PAGE_USER)); -+ set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE)); - } - pmd = pmd_offset(pud, phys); - BUG_ON(!pmd_none(*pmd)); -@@ -329,7 +343,7 @@ static __ref void *alloc_low_page(unsigned long *phys) - if (pfn >= pgt_buf_top) - panic("alloc_low_page: ran out of memory"); - -- adr = early_memremap(pfn * PAGE_SIZE, PAGE_SIZE); -+ adr = (void __force_kernel *)early_memremap(pfn * PAGE_SIZE, PAGE_SIZE); - clear_page(adr); - *phys = pfn * PAGE_SIZE; - return adr; -@@ -345,7 +359,7 @@ static __ref void *map_low_page(void *virt) - - phys = __pa(virt); - left = phys & (PAGE_SIZE - 1); -- adr = early_memremap(phys & PAGE_MASK, PAGE_SIZE); -+ adr = (void __force_kernel *)early_memremap(phys & PAGE_MASK, PAGE_SIZE); - adr = (void *)(((unsigned long)adr) | left); - - return adr; -@@ -553,7 +567,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, - unmap_low_page(pmd); - - spin_lock(&init_mm.page_table_lock); -- pud_populate(&init_mm, pud, __va(pmd_phys)); -+ pud_populate_kernel(&init_mm, pud, __va(pmd_phys)); - spin_unlock(&init_mm.page_table_lock); - } - __flush_tlb_all(); -@@ -599,7 +613,7 @@ kernel_physical_mapping_init(unsigned long start, - unmap_low_page(pud); - - spin_lock(&init_mm.page_table_lock); -- pgd_populate(&init_mm, pgd, __va(pud_phys)); -+ pgd_populate_kernel(&init_mm, pgd, __va(pud_phys)); - spin_unlock(&init_mm.page_table_lock); - pgd_changed = true; - } -@@ -691,6 +705,12 @@ void __init mem_init(void) - - pci_iommu_alloc(); - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY, -+ swapper_pg_dir + KERNEL_PGD_BOUNDARY, -+ KERNEL_PGD_PTRS); -+#endif -+ - /* clear_bss() already clear the empty_zero_page */ - - reservedpages = 0; -@@ -854,8 +874,8 @@ int kern_addr_valid(unsigned long addr) - static struct vm_area_struct gate_vma = { - .vm_start = VSYSCALL_START, - .vm_end = VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE), -- .vm_page_prot = PAGE_READONLY_EXEC, -- .vm_flags = VM_READ | VM_EXEC -+ .vm_page_prot = PAGE_READONLY, -+ .vm_flags = VM_READ - }; - - struct vm_area_struct *get_gate_vma(struct mm_struct *mm) -@@ -889,7 +909,7 @@ int in_gate_area_no_mm(unsigned long addr) - - const char *arch_vma_name(struct vm_area_struct *vma) - { -- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) -+ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) - return "[vdso]"; - if (vma == &gate_vma) - return "[vsyscall]"; -diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c -index 7b179b4..6bd1777 100644 ---- a/arch/x86/mm/iomap_32.c -+++ b/arch/x86/mm/iomap_32.c -@@ -64,7 +64,11 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot) - type = kmap_atomic_idx_push(); - idx = type + KM_TYPE_NR * smp_processor_id(); - vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); -+ -+ pax_open_kernel(); - set_pte(kmap_pte - idx, pfn_pte(pfn, prot)); -+ pax_close_kernel(); -+ - arch_flush_lazy_mmu_mode(); - - return (void *)vaddr; -diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c -index 78fe3f1..8293b6f 100644 ---- a/arch/x86/mm/ioremap.c -+++ b/arch/x86/mm/ioremap.c -@@ -97,7 +97,7 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr, - for (pfn = phys_addr >> PAGE_SHIFT; pfn <= last_pfn; pfn++) { - int is_ram = page_is_ram(pfn); - -- if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) -+ if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn)))) - return NULL; - WARN_ON_ONCE(is_ram); - } -@@ -315,6 +315,9 @@ void *xlate_dev_mem_ptr(unsigned long phys) - - /* If page is RAM, we can use __va. Otherwise ioremap and unmap. */ - if (page_is_ram(start >> PAGE_SHIFT)) -+#ifdef CONFIG_HIGHMEM -+ if ((start >> PAGE_SHIFT) < max_low_pfn) -+#endif - return __va(phys); - - addr = (void __force *)ioremap_cache(start, PAGE_SIZE); -@@ -344,7 +347,7 @@ static int __init early_ioremap_debug_setup(char *str) - early_param("early_ioremap_debug", early_ioremap_debug_setup); - - static __initdata int after_paging_init; --static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss; -+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE); - - static inline pmd_t * __init early_ioremap_pmd(unsigned long addr) - { -@@ -381,8 +384,7 @@ void __init early_ioremap_init(void) - slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i); - - pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)); -- memset(bm_pte, 0, sizeof(bm_pte)); -- pmd_populate_kernel(&init_mm, pmd, bm_pte); -+ pmd_populate_user(&init_mm, pmd, bm_pte); - - /* - * The boot-ioremap range spans multiple pmds, for which -diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c -index d87dd6d..bf3fa66 100644 ---- a/arch/x86/mm/kmemcheck/kmemcheck.c -+++ b/arch/x86/mm/kmemcheck/kmemcheck.c -@@ -622,9 +622,9 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address, - * memory (e.g. tracked pages)? For now, we need this to avoid - * invoking kmemcheck for PnP BIOS calls. - */ -- if (regs->flags & X86_VM_MASK) -+ if (v8086_mode(regs)) - return false; -- if (regs->cs != __KERNEL_CS) -+ if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS) - return false; - - pte = kmemcheck_pte_lookup(address); -diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c -index 845df68..1d8d29f 100644 ---- a/arch/x86/mm/mmap.c -+++ b/arch/x86/mm/mmap.c -@@ -52,7 +52,7 @@ static unsigned int stack_maxrandom_size(void) - * Leave an at least ~128 MB hole with possible stack randomization. - */ - #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size()) --#define MAX_GAP (TASK_SIZE/6*5) -+#define MAX_GAP (pax_task_size/6*5) - - static int mmap_is_legacy(void) - { -@@ -82,27 +82,40 @@ static unsigned long mmap_rnd(void) - return rnd << PAGE_SHIFT; - } - --static unsigned long mmap_base(void) -+static unsigned long mmap_base(struct mm_struct *mm) - { - unsigned long gap = rlimit(RLIMIT_STACK); -+ unsigned long pax_task_size = TASK_SIZE; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ pax_task_size = SEGMEXEC_TASK_SIZE; -+#endif - - if (gap < MIN_GAP) - gap = MIN_GAP; - else if (gap > MAX_GAP) - gap = MAX_GAP; - -- return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd()); -+ return PAGE_ALIGN(pax_task_size - gap - mmap_rnd()); - } - - /* - * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64 - * does, but not when emulating X86_32 - */ --static unsigned long mmap_legacy_base(void) -+static unsigned long mmap_legacy_base(struct mm_struct *mm) - { -- if (mmap_is_ia32()) -+ if (mmap_is_ia32()) { -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (mm->pax_flags & MF_PAX_SEGMEXEC) -+ return SEGMEXEC_TASK_UNMAPPED_BASE; -+ else -+#endif -+ - return TASK_UNMAPPED_BASE; -- else -+ } else - return TASK_UNMAPPED_BASE + mmap_rnd(); - } - -@@ -113,11 +126,23 @@ static unsigned long mmap_legacy_base(void) - void arch_pick_mmap_layout(struct mm_struct *mm) - { - if (mmap_is_legacy()) { -- mm->mmap_base = mmap_legacy_base(); -+ mm->mmap_base = mmap_legacy_base(mm); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base += mm->delta_mmap; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { -- mm->mmap_base = mmap_base(); -+ mm->mmap_base = mmap_base(mm); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (mm->pax_flags & MF_PAX_RANDMMAP) -+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; -+#endif -+ - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c -index dc0b727..dc9d71a 100644 ---- a/arch/x86/mm/mmio-mod.c -+++ b/arch/x86/mm/mmio-mod.c -@@ -194,7 +194,7 @@ static void pre(struct kmmio_probe *p, struct pt_regs *regs, - break; - default: - { -- unsigned char *ip = (unsigned char *)instptr; -+ unsigned char *ip = (unsigned char *)ktla_ktva(instptr); - my_trace->opcode = MMIO_UNKNOWN_OP; - my_trace->width = 0; - my_trace->value = (*ip) << 16 | *(ip + 1) << 8 | -@@ -234,7 +234,7 @@ static void post(struct kmmio_probe *p, unsigned long condition, - static void ioremap_trace_core(resource_size_t offset, unsigned long size, - void __iomem *addr) - { -- static atomic_t next_id; -+ static atomic_unchecked_t next_id; - struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL); - /* These are page-unaligned. */ - struct mmiotrace_map map = { -@@ -258,7 +258,7 @@ static void ioremap_trace_core(resource_size_t offset, unsigned long size, - .private = trace - }, - .phys = offset, -- .id = atomic_inc_return(&next_id) -+ .id = atomic_inc_return_unchecked(&next_id) - }; - map.map_id = trace->id; - -diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c -index b008656..773eac2 100644 ---- a/arch/x86/mm/pageattr-test.c -+++ b/arch/x86/mm/pageattr-test.c -@@ -36,7 +36,7 @@ enum { - - static int pte_testbit(pte_t pte) - { -- return pte_flags(pte) & _PAGE_UNUSED1; -+ return pte_flags(pte) & _PAGE_CPA_TEST; - } - - struct split_state { -diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c -index a718e0d..77419bc 100644 ---- a/arch/x86/mm/pageattr.c -+++ b/arch/x86/mm/pageattr.c -@@ -261,7 +261,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, - */ - #ifdef CONFIG_PCI_BIOS - if (pcibios_enabled && within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT)) -- pgprot_val(forbidden) |= _PAGE_NX; -+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; - #endif - - /* -@@ -269,9 +269,10 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, - * Does not cover __inittext since that is gone later on. On - * 64bit we do not enforce !NX on the low mapping - */ -- if (within(address, (unsigned long)_text, (unsigned long)_etext)) -- pgprot_val(forbidden) |= _PAGE_NX; -+ if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext))) -+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; - -+#ifdef CONFIG_DEBUG_RODATA - /* - * The .rodata section needs to be read-only. Using the pfn - * catches all aliases. -@@ -279,6 +280,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, - if (within(pfn, __pa((unsigned long)__start_rodata) >> PAGE_SHIFT, - __pa((unsigned long)__end_rodata) >> PAGE_SHIFT)) - pgprot_val(forbidden) |= _PAGE_RW; -+#endif - - #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) - /* -@@ -317,6 +319,13 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, - } - #endif - -+#ifdef CONFIG_PAX_KERNEXEC -+ if (within(pfn, __pa(ktla_ktva((unsigned long)&_text)), __pa((unsigned long)&_sdata))) { -+ pgprot_val(forbidden) |= _PAGE_RW; -+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; -+ } -+#endif -+ - prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden)); - - return prot; -@@ -369,23 +378,37 @@ EXPORT_SYMBOL_GPL(lookup_address); - static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte) - { - /* change init_mm */ -+ pax_open_kernel(); - set_pte_atomic(kpte, pte); -+ - #ifdef CONFIG_X86_32 - if (!SHARED_KERNEL_PMD) { -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ unsigned long cpu; -+#else - struct page *page; -+#endif - -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { -+ pgd_t *pgd = get_cpu_pgd(cpu); -+#else - list_for_each_entry(page, &pgd_list, lru) { -- pgd_t *pgd; -+ pgd_t *pgd = (pgd_t *)page_address(page); -+#endif -+ - pud_t *pud; - pmd_t *pmd; - -- pgd = (pgd_t *)page_address(page) + pgd_index(address); -+ pgd += pgd_index(address); - pud = pud_offset(pgd, address); - pmd = pmd_offset(pud, address); - set_pte_atomic((pte_t *)pmd, pte); - } - } - #endif -+ pax_close_kernel(); - } - - static int -diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c -index 3d68ef6..7f69136 100644 ---- a/arch/x86/mm/pat.c -+++ b/arch/x86/mm/pat.c -@@ -376,7 +376,7 @@ int free_memtype(u64 start, u64 end) - - if (!entry) { - printk(KERN_INFO "%s:%d freeing invalid memtype [mem %#010Lx-%#010Lx]\n", -- current->comm, current->pid, start, end - 1); -+ current->comm, task_pid_nr(current), start, end - 1); - return -EINVAL; - } - -@@ -506,8 +506,8 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) - - while (cursor < to) { - if (!devmem_is_allowed(pfn)) { -- printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx]\n", -- current->comm, from, to - 1); -+ printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx] (%#010Lx)\n", -+ current->comm, from, to - 1, cursor); - return 0; - } - cursor += PAGE_SIZE; -@@ -570,7 +570,7 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags) - if (ioremap_change_attr((unsigned long)__va(base), id_sz, flags) < 0) { - printk(KERN_INFO "%s:%d ioremap_change_attr failed %s " - "for [mem %#010Lx-%#010Lx]\n", -- current->comm, current->pid, -+ current->comm, task_pid_nr(current), - cattr_name(flags), - base, (unsigned long long)(base + size-1)); - return -EINVAL; -@@ -605,7 +605,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot, - flags = lookup_memtype(paddr); - if (want_flags != flags) { - printk(KERN_WARNING "%s:%d map pfn RAM range req %s for [mem %#010Lx-%#010Lx], got %s\n", -- current->comm, current->pid, -+ current->comm, task_pid_nr(current), - cattr_name(want_flags), - (unsigned long long)paddr, - (unsigned long long)(paddr + size - 1), -@@ -627,7 +627,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot, - free_memtype(paddr, paddr + size); - printk(KERN_ERR "%s:%d map pfn expected mapping type %s" - " for [mem %#010Lx-%#010Lx], got %s\n", -- current->comm, current->pid, -+ current->comm, task_pid_nr(current), - cattr_name(want_flags), - (unsigned long long)paddr, - (unsigned long long)(paddr + size - 1), -diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c -index 9f0614d..92ae64a 100644 ---- a/arch/x86/mm/pf_in.c -+++ b/arch/x86/mm/pf_in.c -@@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned long ins_addr) - int i; - enum reason_type rv = OTHERS; - -- p = (unsigned char *)ins_addr; -+ p = (unsigned char *)ktla_ktva(ins_addr); - p += skip_prefix(p, &prf); - p += get_opcode(p, &opcode); - -@@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(unsigned long ins_addr) - struct prefix_bits prf; - int i; - -- p = (unsigned char *)ins_addr; -+ p = (unsigned char *)ktla_ktva(ins_addr); - p += skip_prefix(p, &prf); - p += get_opcode(p, &opcode); - -@@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned long ins_addr) - struct prefix_bits prf; - int i; - -- p = (unsigned char *)ins_addr; -+ p = (unsigned char *)ktla_ktva(ins_addr); - p += skip_prefix(p, &prf); - p += get_opcode(p, &opcode); - -@@ -415,7 +415,7 @@ unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs) - struct prefix_bits prf; - int i; - -- p = (unsigned char *)ins_addr; -+ p = (unsigned char *)ktla_ktva(ins_addr); - p += skip_prefix(p, &prf); - p += get_opcode(p, &opcode); - for (i = 0; i < ARRAY_SIZE(reg_rop); i++) -@@ -470,7 +470,7 @@ unsigned long get_ins_imm_val(unsigned long ins_addr) - struct prefix_bits prf; - int i; - -- p = (unsigned char *)ins_addr; -+ p = (unsigned char *)ktla_ktva(ins_addr); - p += skip_prefix(p, &prf); - p += get_opcode(p, &opcode); - for (i = 0; i < ARRAY_SIZE(imm_wop); i++) -diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c -index 8573b83..4f3ed7e 100644 ---- a/arch/x86/mm/pgtable.c -+++ b/arch/x86/mm/pgtable.c -@@ -84,10 +84,64 @@ static inline void pgd_list_del(pgd_t *pgd) - list_del(&page->lru); - } - --#define UNSHARED_PTRS_PER_PGD \ -- (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT; - -+void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) -+{ -+ unsigned int count = USER_PGD_PTRS; -+ -+ while (count--) -+ *dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER); -+} -+#endif -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+void __clone_user_pgds(pgd_t *dst, const pgd_t *src) -+{ -+ unsigned int count = USER_PGD_PTRS; -+ -+ while (count--) { -+ pgd_t pgd; -+ -+#ifdef CONFIG_X86_64 -+ pgd = __pgd(pgd_val(*src++) | _PAGE_USER); -+#else -+ pgd = *src++; -+#endif -+ -+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) -+ pgd = __pgd(pgd_val(pgd) & clone_pgd_mask); -+#endif - -+ *dst++ = pgd; -+ } -+ -+} -+#endif -+ -+#ifdef CONFIG_X86_64 -+#define pxd_t pud_t -+#define pyd_t pgd_t -+#define paravirt_release_pxd(pfn) paravirt_release_pud(pfn) -+#define pxd_free(mm, pud) pud_free((mm), (pud)) -+#define pyd_populate(mm, pgd, pud) pgd_populate((mm), (pgd), (pud)) -+#define pyd_offset(mm, address) pgd_offset((mm), (address)) -+#define PYD_SIZE PGDIR_SIZE -+#else -+#define pxd_t pmd_t -+#define pyd_t pud_t -+#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn) -+#define pxd_free(mm, pud) pmd_free((mm), (pud)) -+#define pyd_populate(mm, pgd, pud) pud_populate((mm), (pgd), (pud)) -+#define pyd_offset(mm, address) pud_offset((mm), (address)) -+#define PYD_SIZE PUD_SIZE -+#endif -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+static inline void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) {} -+static inline void pgd_dtor(pgd_t *pgd) {} -+#else - static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm) - { - BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm)); -@@ -128,6 +182,7 @@ static void pgd_dtor(pgd_t *pgd) - pgd_list_del(pgd); - spin_unlock(&pgd_lock); - } -+#endif - - /* - * List of all pgd's needed for non-PAE so it can invalidate entries -@@ -140,7 +195,7 @@ static void pgd_dtor(pgd_t *pgd) - * -- wli - */ - --#ifdef CONFIG_X86_PAE -+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) - /* - * In PAE mode, we need to do a cr3 reload (=tlb flush) when - * updating the top-level pagetable entries to guarantee the -@@ -152,7 +207,7 @@ static void pgd_dtor(pgd_t *pgd) - * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate - * and initialize the kernel pmds here. - */ --#define PREALLOCATED_PMDS UNSHARED_PTRS_PER_PGD -+#define PREALLOCATED_PXDS (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) - - void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) - { -@@ -170,36 +225,38 @@ void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) - */ - flush_tlb_mm(mm); - } -+#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD) -+#define PREALLOCATED_PXDS USER_PGD_PTRS - #else /* !CONFIG_X86_PAE */ - - /* No need to prepopulate any pagetable entries in non-PAE modes. */ --#define PREALLOCATED_PMDS 0 -+#define PREALLOCATED_PXDS 0 - - #endif /* CONFIG_X86_PAE */ - --static void free_pmds(pmd_t *pmds[]) -+static void free_pxds(pxd_t *pxds[]) - { - int i; - -- for(i = 0; i < PREALLOCATED_PMDS; i++) -- if (pmds[i]) -- free_page((unsigned long)pmds[i]); -+ for(i = 0; i < PREALLOCATED_PXDS; i++) -+ if (pxds[i]) -+ free_page((unsigned long)pxds[i]); - } - --static int preallocate_pmds(pmd_t *pmds[]) -+static int preallocate_pxds(pxd_t *pxds[]) - { - int i; - bool failed = false; - -- for(i = 0; i < PREALLOCATED_PMDS; i++) { -- pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP); -- if (pmd == NULL) -+ for(i = 0; i < PREALLOCATED_PXDS; i++) { -+ pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP); -+ if (pxd == NULL) - failed = true; -- pmds[i] = pmd; -+ pxds[i] = pxd; - } - - if (failed) { -- free_pmds(pmds); -+ free_pxds(pxds); - return -ENOMEM; - } - -@@ -212,51 +269,55 @@ static int preallocate_pmds(pmd_t *pmds[]) - * preallocate which never got a corresponding vma will need to be - * freed manually. - */ --static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) -+static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp) - { - int i; - -- for(i = 0; i < PREALLOCATED_PMDS; i++) { -+ for(i = 0; i < PREALLOCATED_PXDS; i++) { - pgd_t pgd = pgdp[i]; - - if (pgd_val(pgd) != 0) { -- pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd); -+ pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd); - -- pgdp[i] = native_make_pgd(0); -+ set_pgd(pgdp + i, native_make_pgd(0)); - -- paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT); -- pmd_free(mm, pmd); -+ paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT); -+ pxd_free(mm, pxd); - } - } - } - --static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) -+static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[]) - { -- pud_t *pud; -+ pyd_t *pyd; - unsigned long addr; - int i; - -- if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */ -+ if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */ - return; - -- pud = pud_offset(pgd, 0); -+#ifdef CONFIG_X86_64 -+ pyd = pyd_offset(mm, 0L); -+#else -+ pyd = pyd_offset(pgd, 0L); -+#endif - -- for (addr = i = 0; i < PREALLOCATED_PMDS; -- i++, pud++, addr += PUD_SIZE) { -- pmd_t *pmd = pmds[i]; -+ for (addr = i = 0; i < PREALLOCATED_PXDS; -+ i++, pyd++, addr += PYD_SIZE) { -+ pxd_t *pxd = pxds[i]; - - if (i >= KERNEL_PGD_BOUNDARY) -- memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]), -- sizeof(pmd_t) * PTRS_PER_PMD); -+ memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]), -+ sizeof(pxd_t) * PTRS_PER_PMD); - -- pud_populate(mm, pud, pmd); -+ pyd_populate(mm, pyd, pxd); - } - } - - pgd_t *pgd_alloc(struct mm_struct *mm) - { - pgd_t *pgd; -- pmd_t *pmds[PREALLOCATED_PMDS]; -+ pxd_t *pxds[PREALLOCATED_PXDS]; - - pgd = (pgd_t *)__get_free_page(PGALLOC_GFP); - -@@ -265,11 +326,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) - - mm->pgd = pgd; - -- if (preallocate_pmds(pmds) != 0) -+ if (preallocate_pxds(pxds) != 0) - goto out_free_pgd; - - if (paravirt_pgd_alloc(mm) != 0) -- goto out_free_pmds; -+ goto out_free_pxds; - - /* - * Make sure that pre-populating the pmds is atomic with -@@ -279,14 +340,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) - spin_lock(&pgd_lock); - - pgd_ctor(mm, pgd); -- pgd_prepopulate_pmd(mm, pgd, pmds); -+ pgd_prepopulate_pxd(mm, pgd, pxds); - - spin_unlock(&pgd_lock); - - return pgd; - --out_free_pmds: -- free_pmds(pmds); -+out_free_pxds: -+ free_pxds(pxds); - out_free_pgd: - free_page((unsigned long)pgd); - out: -@@ -295,7 +356,7 @@ out: - - void pgd_free(struct mm_struct *mm, pgd_t *pgd) - { -- pgd_mop_up_pmds(mm, pgd); -+ pgd_mop_up_pxds(mm, pgd); - pgd_dtor(pgd); - paravirt_pgd_free(mm, pgd); - free_page((unsigned long)pgd); -diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c -index a69bcb8..19068ab 100644 ---- a/arch/x86/mm/pgtable_32.c -+++ b/arch/x86/mm/pgtable_32.c -@@ -47,10 +47,13 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval) - return; - } - pte = pte_offset_kernel(pmd, vaddr); -+ -+ pax_open_kernel(); - if (pte_val(pteval)) - set_pte_at(&init_mm, vaddr, pte, pteval); - else - pte_clear(&init_mm, vaddr, pte); -+ pax_close_kernel(); - - /* - * It's enough to flush this one mapping. -diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c -index 410531d..0f16030 100644 ---- a/arch/x86/mm/setup_nx.c -+++ b/arch/x86/mm/setup_nx.c -@@ -5,8 +5,10 @@ - #include - #include - -+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) - static int disable_nx __cpuinitdata; - -+#ifndef CONFIG_PAX_PAGEEXEC - /* - * noexec = on|off - * -@@ -28,12 +30,17 @@ static int __init noexec_setup(char *str) - return 0; - } - early_param("noexec", noexec_setup); -+#endif -+ -+#endif - - void __cpuinit x86_configure_nx(void) - { -+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) - if (cpu_has_nx && !disable_nx) - __supported_pte_mask |= _PAGE_NX; - else -+#endif - __supported_pte_mask &= ~_PAGE_NX; - } - -diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c -index 613cd83..3a21f1c 100644 ---- a/arch/x86/mm/tlb.c -+++ b/arch/x86/mm/tlb.c -@@ -48,7 +48,11 @@ void leave_mm(int cpu) - BUG(); - if (cpumask_test_cpu(cpu, mm_cpumask(active_mm))) { - cpumask_clear_cpu(cpu, mm_cpumask(active_mm)); -+ -+#ifndef CONFIG_PAX_PER_CPU_PGD - load_cr3(swapper_pg_dir); -+#endif -+ - } - } - EXPORT_SYMBOL_GPL(leave_mm); -diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S -index 877b9a1..a8ecf42 100644 ---- a/arch/x86/net/bpf_jit.S -+++ b/arch/x86/net/bpf_jit.S -@@ -9,6 +9,7 @@ - */ - #include - #include -+#include - - /* - * Calling convention : -@@ -35,6 +36,7 @@ sk_load_word_positive_offset: - jle bpf_slow_path_word - mov (SKBDATA,%rsi),%eax - bswap %eax /* ntohl() */ -+ pax_force_retaddr - ret - - sk_load_half: -@@ -52,6 +54,7 @@ sk_load_half_positive_offset: - jle bpf_slow_path_half - movzwl (SKBDATA,%rsi),%eax - rol $8,%ax # ntohs() -+ pax_force_retaddr - ret - - sk_load_byte: -@@ -66,6 +69,7 @@ sk_load_byte_positive_offset: - cmp %esi,%r9d /* if (offset >= hlen) goto bpf_slow_path_byte */ - jle bpf_slow_path_byte - movzbl (SKBDATA,%rsi),%eax -+ pax_force_retaddr - ret - - /** -@@ -87,6 +91,7 @@ sk_load_byte_msh_positive_offset: - movzbl (SKBDATA,%rsi),%ebx - and $15,%bl - shl $2,%bl -+ pax_force_retaddr - ret - - /* rsi contains offset and can be scratched */ -@@ -109,6 +114,7 @@ bpf_slow_path_word: - js bpf_error - mov -12(%rbp),%eax - bswap %eax -+ pax_force_retaddr - ret - - bpf_slow_path_half: -@@ -117,12 +123,14 @@ bpf_slow_path_half: - mov -12(%rbp),%ax - rol $8,%ax - movzwl %ax,%eax -+ pax_force_retaddr - ret - - bpf_slow_path_byte: - bpf_slow_path_common(1) - js bpf_error - movzbl -12(%rbp),%eax -+ pax_force_retaddr - ret - - bpf_slow_path_byte_msh: -@@ -133,6 +141,7 @@ bpf_slow_path_byte_msh: - and $15,%al - shl $2,%al - xchg %eax,%ebx -+ pax_force_retaddr - ret - - #define sk_negative_common(SIZE) \ -@@ -157,6 +166,7 @@ sk_load_word_negative_offset: - sk_negative_common(4) - mov (%rax), %eax - bswap %eax -+ pax_force_retaddr - ret - - bpf_slow_path_half_neg: -@@ -168,6 +178,7 @@ sk_load_half_negative_offset: - mov (%rax),%ax - rol $8,%ax - movzwl %ax,%eax -+ pax_force_retaddr - ret - - bpf_slow_path_byte_neg: -@@ -177,6 +188,7 @@ sk_load_byte_negative_offset: - .globl sk_load_byte_negative_offset - sk_negative_common(1) - movzbl (%rax), %eax -+ pax_force_retaddr - ret - - bpf_slow_path_byte_msh_neg: -@@ -190,6 +202,7 @@ sk_load_byte_msh_negative_offset: - and $15,%al - shl $2,%al - xchg %eax,%ebx -+ pax_force_retaddr - ret - - bpf_error: -@@ -197,4 +210,5 @@ bpf_error: - xor %eax,%eax - mov -8(%rbp),%rbx - leaveq -+ pax_force_retaddr - ret -diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c -index 33643a8..f6211a0 100644 ---- a/arch/x86/net/bpf_jit_comp.c -+++ b/arch/x86/net/bpf_jit_comp.c -@@ -11,6 +11,7 @@ - #include - #include - #include -+#include - - /* - * Conventions : -@@ -48,13 +49,87 @@ static inline u8 *emit_code(u8 *ptr, u32 bytes, unsigned int len) - return ptr + len; - } - -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+#define MAX_INSTR_CODE_SIZE 96 -+#else -+#define MAX_INSTR_CODE_SIZE 64 -+#endif -+ - #define EMIT(bytes, len) do { prog = emit_code(prog, bytes, len); } while (0) - - #define EMIT1(b1) EMIT(b1, 1) - #define EMIT2(b1, b2) EMIT((b1) + ((b2) << 8), 2) - #define EMIT3(b1, b2, b3) EMIT((b1) + ((b2) << 8) + ((b3) << 16), 3) - #define EMIT4(b1, b2, b3, b4) EMIT((b1) + ((b2) << 8) + ((b3) << 16) + ((b4) << 24), 4) -+ -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+/* original constant will appear in ecx */ -+#define DILUTE_CONST_SEQUENCE(_off, _key) \ -+do { \ -+ /* mov ecx, randkey */ \ -+ EMIT1(0xb9); \ -+ EMIT(_key, 4); \ -+ /* xor ecx, randkey ^ off */ \ -+ EMIT2(0x81, 0xf1); \ -+ EMIT((_key) ^ (_off), 4); \ -+} while (0) -+ -+#define EMIT1_off32(b1, _off) \ -+do { \ -+ switch (b1) { \ -+ case 0x05: /* add eax, imm32 */ \ -+ case 0x2d: /* sub eax, imm32 */ \ -+ case 0x25: /* and eax, imm32 */ \ -+ case 0x0d: /* or eax, imm32 */ \ -+ case 0xb8: /* mov eax, imm32 */ \ -+ case 0x3d: /* cmp eax, imm32 */ \ -+ case 0xa9: /* test eax, imm32 */ \ -+ DILUTE_CONST_SEQUENCE(_off, randkey); \ -+ EMIT2((b1) - 4, 0xc8); /* convert imm instruction to eax, ecx */\ -+ break; \ -+ case 0xbb: /* mov ebx, imm32 */ \ -+ DILUTE_CONST_SEQUENCE(_off, randkey); \ -+ /* mov ebx, ecx */ \ -+ EMIT2(0x89, 0xcb); \ -+ break; \ -+ case 0xbe: /* mov esi, imm32 */ \ -+ DILUTE_CONST_SEQUENCE(_off, randkey); \ -+ /* mov esi, ecx */ \ -+ EMIT2(0x89, 0xce); \ -+ break; \ -+ case 0xe9: /* jmp rel imm32 */ \ -+ EMIT1(b1); \ -+ EMIT(_off, 4); \ -+ /* prevent fall-through, we're not called if off = 0 */ \ -+ EMIT(0xcccccccc, 4); \ -+ EMIT(0xcccccccc, 4); \ -+ break; \ -+ default: \ -+ EMIT1(b1); \ -+ EMIT(_off, 4); \ -+ } \ -+} while (0) -+ -+#define EMIT2_off32(b1, b2, _off) \ -+do { \ -+ if ((b1) == 0x8d && (b2) == 0xb3) { /* lea esi, [rbx+imm32] */ \ -+ EMIT2(0x8d, 0xb3); /* lea esi, [rbx+randkey] */ \ -+ EMIT(randkey, 4); \ -+ EMIT2(0x8d, 0xb6); /* lea esi, [esi+off-randkey] */ \ -+ EMIT((_off) - randkey, 4); \ -+ } else if ((b1) == 0x69 && (b2) == 0xc0) { /* imul eax, imm32 */\ -+ DILUTE_CONST_SEQUENCE(_off, randkey); \ -+ /* imul eax, ecx */ \ -+ EMIT3(0x0f, 0xaf, 0xc1); \ -+ } else { \ -+ EMIT2(b1, b2); \ -+ EMIT(_off, 4); \ -+ } \ -+} while (0) -+#else - #define EMIT1_off32(b1, off) do { EMIT1(b1); EMIT(off, 4);} while (0) -+#define EMIT2_off32(b1, b2, off) do { EMIT2(b1, b2); EMIT(off, 4);} while (0) -+#endif - - #define CLEAR_A() EMIT2(0x31, 0xc0) /* xor %eax,%eax */ - #define CLEAR_X() EMIT2(0x31, 0xdb) /* xor %ebx,%ebx */ -@@ -89,6 +164,24 @@ do { \ - #define X86_JBE 0x76 - #define X86_JA 0x77 - -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+#define APPEND_FLOW_VERIFY() \ -+do { \ -+ /* mov ecx, randkey */ \ -+ EMIT1(0xb9); \ -+ EMIT(randkey, 4); \ -+ /* cmp ecx, randkey */ \ -+ EMIT2(0x81, 0xf9); \ -+ EMIT(randkey, 4); \ -+ /* jz after 8 int 3s */ \ -+ EMIT2(0x74, 0x08); \ -+ EMIT(0xcccccccc, 4); \ -+ EMIT(0xcccccccc, 4); \ -+} while (0) -+#else -+#define APPEND_FLOW_VERIFY() do { } while (0) -+#endif -+ - #define EMIT_COND_JMP(op, offset) \ - do { \ - if (is_near(offset)) \ -@@ -96,6 +189,7 @@ do { \ - else { \ - EMIT2(0x0f, op + 0x10); \ - EMIT(offset, 4); /* jxx .+off32 */ \ -+ APPEND_FLOW_VERIFY(); \ - } \ - } while (0) - -@@ -120,12 +214,17 @@ static inline void bpf_flush_icache(void *start, void *end) - set_fs(old_fs); - } - -+struct bpf_jit_work { -+ struct work_struct work; -+ void *image; -+}; -+ - #define CHOOSE_LOAD_FUNC(K, func) \ - ((int)K < 0 ? ((int)K >= SKF_LL_OFF ? func##_negative_offset : func) : func##_positive_offset) - - void bpf_jit_compile(struct sk_filter *fp) - { -- u8 temp[64]; -+ u8 temp[MAX_INSTR_CODE_SIZE]; - u8 *prog; - unsigned int proglen, oldproglen = 0; - int ilen, i; -@@ -138,6 +237,9 @@ void bpf_jit_compile(struct sk_filter *fp) - unsigned int *addrs; - const struct sock_filter *filter = fp->insns; - int flen = fp->len; -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+ unsigned int randkey; -+#endif - - if (!bpf_jit_enable) - return; -@@ -146,11 +248,19 @@ void bpf_jit_compile(struct sk_filter *fp) - if (addrs == NULL) - return; - -+ fp->work = kmalloc(sizeof(*fp->work), GFP_KERNEL); -+ if (!fp->work) -+ goto out; -+ -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+ randkey = get_random_int(); -+#endif -+ - /* Before first pass, make a rough estimation of addrs[] -- * each bpf instruction is translated to less than 64 bytes -+ * each bpf instruction is translated to less than MAX_INSTR_CODE_SIZE bytes - */ - for (proglen = 0, i = 0; i < flen; i++) { -- proglen += 64; -+ proglen += MAX_INSTR_CODE_SIZE; - addrs[i] = proglen; - } - cleanup_addr = proglen; /* epilogue address */ -@@ -258,10 +368,8 @@ void bpf_jit_compile(struct sk_filter *fp) - case BPF_S_ALU_MUL_K: /* A *= K */ - if (is_imm8(K)) - EMIT3(0x6b, 0xc0, K); /* imul imm8,%eax,%eax */ -- else { -- EMIT2(0x69, 0xc0); /* imul imm32,%eax */ -- EMIT(K, 4); -- } -+ else -+ EMIT2_off32(0x69, 0xc0, K); /* imul imm32,%eax */ - break; - case BPF_S_ALU_DIV_X: /* A /= X; */ - seen |= SEEN_XREG; -@@ -281,8 +389,14 @@ void bpf_jit_compile(struct sk_filter *fp) - EMIT4(0x31, 0xd2, 0xf7, 0xf3); /* xor %edx,%edx; div %ebx */ - break; - case BPF_S_ALU_DIV_K: /* A = reciprocal_divide(A, K); */ -+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN -+ DILUTE_CONST_SEQUENCE(K, randkey); -+ // imul rax, rcx -+ EMIT4(0x48, 0x0f, 0xaf, 0xc1); -+#else - EMIT3(0x48, 0x69, 0xc0); /* imul imm32,%rax,%rax */ - EMIT(K, 4); -+#endif - EMIT4(0x48, 0xc1, 0xe8, 0x20); /* shr $0x20,%rax */ - break; - case BPF_S_ALU_AND_X: -@@ -509,8 +623,7 @@ common_load_ind: seen |= SEEN_DATAREF | SEEN_XREG; - if (is_imm8(K)) { - EMIT3(0x8d, 0x73, K); /* lea imm8(%rbx), %esi */ - } else { -- EMIT2(0x8d, 0xb3); /* lea imm32(%rbx),%esi */ -- EMIT(K, 4); -+ EMIT2_off32(0x8d, 0xb3, K); /* lea imm32(%rbx),%esi */ - } - } else { - EMIT2(0x89,0xde); /* mov %ebx,%esi */ -@@ -593,17 +706,18 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; - break; - default: - /* hmm, too complex filter, give up with jit compiler */ -- goto out; -+ goto error; - } - ilen = prog - temp; - if (image) { - if (unlikely(proglen + ilen > oldproglen)) { - pr_err("bpb_jit_compile fatal error\n"); -- kfree(addrs); -- module_free(NULL, image); -- return; -+ module_free_exec(NULL, image); -+ goto error; - } -+ pax_open_kernel(); - memcpy(image + proglen, temp, ilen); -+ pax_close_kernel(); - } - proglen += ilen; - addrs[i] = proglen; -@@ -624,11 +738,9 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; - break; - } - if (proglen == oldproglen) { -- image = module_alloc(max_t(unsigned int, -- proglen, -- sizeof(struct work_struct))); -+ image = module_alloc_exec(proglen); - if (!image) -- goto out; -+ goto error; - } - oldproglen = proglen; - } -@@ -644,7 +756,10 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; - bpf_flush_icache(image, image + proglen); - - fp->bpf_func = (void *)image; -- } -+ } else -+error: -+ kfree(fp->work); -+ - out: - kfree(addrs); - return; -@@ -652,18 +767,20 @@ out: - - static void jit_free_defer(struct work_struct *arg) - { -- module_free(NULL, arg); -+ module_free_exec(NULL, ((struct bpf_jit_work *)arg)->image); -+ kfree(arg); - } - - /* run from softirq, we must use a work_struct to call -- * module_free() from process context -+ * module_free_exec() from process context - */ - void bpf_jit_free(struct sk_filter *fp) - { - if (fp->bpf_func != sk_run_filter) { -- struct work_struct *work = (struct work_struct *)fp->bpf_func; -+ struct work_struct *work = &fp->work->work; - - INIT_WORK(work, jit_free_defer); -+ fp->work->image = fp->bpf_func; - schedule_work(work); - } - } -diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c -index d6aa6e8..266395a 100644 ---- a/arch/x86/oprofile/backtrace.c -+++ b/arch/x86/oprofile/backtrace.c -@@ -46,11 +46,11 @@ dump_user_backtrace_32(struct stack_frame_ia32 *head) - struct stack_frame_ia32 *fp; - unsigned long bytes; - -- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead)); -+ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead)); - if (bytes != sizeof(bufhead)) - return NULL; - -- fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame); -+ fp = (struct stack_frame_ia32 __force_kernel *) compat_ptr(bufhead[0].next_frame); - - oprofile_add_trace(bufhead[0].return_address); - -@@ -92,7 +92,7 @@ static struct stack_frame *dump_user_backtrace(struct stack_frame *head) - struct stack_frame bufhead[2]; - unsigned long bytes; - -- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead)); -+ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead)); - if (bytes != sizeof(bufhead)) - return NULL; - -@@ -111,7 +111,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) - { - struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); - -- if (!user_mode_vm(regs)) { -+ if (!user_mode(regs)) { - unsigned long stack = kernel_stack_pointer(regs); - if (depth) - dump_trace(NULL, regs, (unsigned long *)stack, 0, -diff --git a/arch/x86/pci/mrst.c b/arch/x86/pci/mrst.c -index e14a2ff..3fd6b58 100644 ---- a/arch/x86/pci/mrst.c -+++ b/arch/x86/pci/mrst.c -@@ -238,7 +238,9 @@ int __init pci_mrst_init(void) - printk(KERN_INFO "Intel MID platform detected, using MID PCI ops\n"); - pci_mmcfg_late_init(); - pcibios_enable_irq = mrst_pci_irq_enable; -- pci_root_ops = pci_mrst_ops; -+ pax_open_kernel(); -+ memcpy((void *)&pci_root_ops, &pci_mrst_ops, sizeof(pci_mrst_ops)); -+ pax_close_kernel(); - pci_soc_mode = 1; - /* Continue with standard init */ - return 1; -diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c -index da8fe05..7ee6704 100644 ---- a/arch/x86/pci/pcbios.c -+++ b/arch/x86/pci/pcbios.c -@@ -79,50 +79,93 @@ union bios32 { - static struct { - unsigned long address; - unsigned short segment; --} bios32_indirect = { 0, __KERNEL_CS }; -+} bios32_indirect __read_only = { 0, __PCIBIOS_CS }; - - /* - * Returns the entry point for the given service, NULL on error - */ - --static unsigned long bios32_service(unsigned long service) -+static unsigned long __devinit bios32_service(unsigned long service) - { - unsigned char return_code; /* %al */ - unsigned long address; /* %ebx */ - unsigned long length; /* %ecx */ - unsigned long entry; /* %edx */ - unsigned long flags; -+ struct desc_struct d, *gdt; - - local_irq_save(flags); -- __asm__("lcall *(%%edi); cld" -+ -+ gdt = get_cpu_gdt_table(smp_processor_id()); -+ -+ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC); -+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); -+ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC); -+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); -+ -+ __asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld" - : "=a" (return_code), - "=b" (address), - "=c" (length), - "=d" (entry) - : "0" (service), - "1" (0), -- "D" (&bios32_indirect)); -+ "D" (&bios32_indirect), -+ "r"(__PCIBIOS_DS) -+ : "memory"); -+ -+ pax_open_kernel(); -+ gdt[GDT_ENTRY_PCIBIOS_CS].a = 0; -+ gdt[GDT_ENTRY_PCIBIOS_CS].b = 0; -+ gdt[GDT_ENTRY_PCIBIOS_DS].a = 0; -+ gdt[GDT_ENTRY_PCIBIOS_DS].b = 0; -+ pax_close_kernel(); -+ - local_irq_restore(flags); - - switch (return_code) { -- case 0: -- return address + entry; -- case 0x80: /* Not present */ -- printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); -- return 0; -- default: /* Shouldn't happen */ -- printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", -- service, return_code); -+ case 0: { -+ int cpu; -+ unsigned char flags; -+ -+ printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry); -+ if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) { -+ printk(KERN_WARNING "bios32_service: not valid\n"); - return 0; -+ } -+ address = address + PAGE_OFFSET; -+ length += 16UL; /* some BIOSs underreport this... */ -+ flags = 4; -+ if (length >= 64*1024*1024) { -+ length >>= PAGE_SHIFT; -+ flags |= 8; -+ } -+ -+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) { -+ gdt = get_cpu_gdt_table(cpu); -+ pack_descriptor(&d, address, length, 0x9b, flags); -+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); -+ pack_descriptor(&d, address, length, 0x93, flags); -+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); -+ } -+ return entry; -+ } -+ case 0x80: /* Not present */ -+ printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); -+ return 0; -+ default: /* Shouldn't happen */ -+ printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", -+ service, return_code); -+ return 0; - } - } - - static struct { - unsigned long address; - unsigned short segment; --} pci_indirect = { 0, __KERNEL_CS }; -+} pci_indirect __read_only = { 0, __PCIBIOS_CS }; - --static int pci_bios_present; -+static int pci_bios_present __read_only; - - static int __devinit check_pcibios(void) - { -@@ -131,11 +174,13 @@ static int __devinit check_pcibios(void) - unsigned long flags, pcibios_entry; - - if ((pcibios_entry = bios32_service(PCI_SERVICE))) { -- pci_indirect.address = pcibios_entry + PAGE_OFFSET; -+ pci_indirect.address = pcibios_entry; - - local_irq_save(flags); -- __asm__( -- "lcall *(%%edi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%edi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -144,7 +189,8 @@ static int __devinit check_pcibios(void) - "=b" (ebx), - "=c" (ecx) - : "1" (PCIBIOS_PCI_BIOS_PRESENT), -- "D" (&pci_indirect) -+ "D" (&pci_indirect), -+ "r" (__PCIBIOS_DS) - : "memory"); - local_irq_restore(flags); - -@@ -189,7 +235,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - - switch (len) { - case 1: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -198,7 +247,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - : "1" (PCIBIOS_READ_CONFIG_BYTE), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - /* - * Zero-extend the result beyond 8 bits, do not trust the - * BIOS having done it: -@@ -206,7 +256,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - *value &= 0xff; - break; - case 2: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -215,7 +268,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - : "1" (PCIBIOS_READ_CONFIG_WORD), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - /* - * Zero-extend the result beyond 16 bits, do not trust the - * BIOS having done it: -@@ -223,7 +277,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - *value &= 0xffff; - break; - case 4: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -232,7 +289,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, - : "1" (PCIBIOS_READ_CONFIG_DWORD), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - break; - } - -@@ -256,7 +314,10 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, - - switch (len) { - case 1: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -265,10 +326,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, - "c" (value), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - break; - case 2: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -277,10 +342,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, - "c" (value), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - break; - case 4: -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w6, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n\t" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -289,7 +358,8 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, - "c" (value), - "b" (bx), - "D" ((long)reg), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - break; - } - -@@ -394,10 +464,13 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void) - - DBG("PCI: Fetching IRQ routing table... "); - __asm__("push %%es\n\t" -+ "movw %w8, %%ds\n\t" - "push %%ds\n\t" - "pop %%es\n\t" -- "lcall *(%%esi); cld\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" - "pop %%es\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -408,7 +481,8 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void) - "1" (0), - "D" ((long) &opt), - "S" (&pci_indirect), -- "m" (opt) -+ "m" (opt), -+ "r" (__PCIBIOS_DS) - : "memory"); - DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map); - if (ret & 0xff00) -@@ -432,7 +506,10 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) - { - int ret; - -- __asm__("lcall *(%%esi); cld\n\t" -+ __asm__("movw %w5, %%ds\n\t" -+ "lcall *%%ss:(%%esi); cld\n\t" -+ "push %%ss\n\t" -+ "pop %%ds\n" - "jc 1f\n\t" - "xor %%ah, %%ah\n" - "1:" -@@ -440,7 +517,8 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) - : "0" (PCIBIOS_SET_PCI_HW_INT), - "b" ((dev->bus->number << 8) | dev->devfn), - "c" ((irq << 8) | (pin + 10)), -- "S" (&pci_indirect)); -+ "S" (&pci_indirect), -+ "r" (__PCIBIOS_DS)); - return !(ret & 0xff00); - } - EXPORT_SYMBOL(pcibios_set_irq_routing); -diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c -index 40e4469..1ab536e 100644 ---- a/arch/x86/platform/efi/efi_32.c -+++ b/arch/x86/platform/efi/efi_32.c -@@ -44,11 +44,22 @@ void efi_call_phys_prelog(void) - { - struct desc_ptr gdt_descr; - -+#ifdef CONFIG_PAX_KERNEXEC -+ struct desc_struct d; -+#endif -+ - local_irq_save(efi_rt_eflags); - - load_cr3(initial_page_table); - __flush_tlb_all(); - -+#ifdef CONFIG_PAX_KERNEXEC -+ pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC); -+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); -+ pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC); -+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); -+#endif -+ - gdt_descr.address = __pa(get_cpu_gdt_table(0)); - gdt_descr.size = GDT_SIZE - 1; - load_gdt(&gdt_descr); -@@ -58,6 +69,14 @@ void efi_call_phys_epilog(void) - { - struct desc_ptr gdt_descr; - -+#ifdef CONFIG_PAX_KERNEXEC -+ struct desc_struct d; -+ -+ memset(&d, 0, sizeof d); -+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); -+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); -+#endif -+ - gdt_descr.address = (unsigned long)get_cpu_gdt_table(0); - gdt_descr.size = GDT_SIZE - 1; - load_gdt(&gdt_descr); -diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S -index fbe66e6..eae5e38 100644 ---- a/arch/x86/platform/efi/efi_stub_32.S -+++ b/arch/x86/platform/efi/efi_stub_32.S -@@ -6,7 +6,9 @@ - */ - - #include -+#include - #include -+#include - - /* - * efi_call_phys(void *, ...) is a function with variable parameters. -@@ -20,7 +22,7 @@ - * service functions will comply with gcc calling convention, too. - */ - --.text -+__INIT - ENTRY(efi_call_phys) - /* - * 0. The function can only be called in Linux kernel. So CS has been -@@ -36,10 +38,24 @@ ENTRY(efi_call_phys) - * The mapping of lower virtual memory has been created in prelog and - * epilog. - */ -- movl $1f, %edx -- subl $__PAGE_OFFSET, %edx -- jmp *%edx -+#ifdef CONFIG_PAX_KERNEXEC -+ movl $(__KERNEXEC_EFI_DS), %edx -+ mov %edx, %ds -+ mov %edx, %es -+ mov %edx, %ss -+ addl $2f,(1f) -+ ljmp *(1f) -+ -+__INITDATA -+1: .long __LOAD_PHYSICAL_ADDR, __KERNEXEC_EFI_CS -+.previous -+ -+2: -+ subl $2b,(1b) -+#else -+ jmp 1f-__PAGE_OFFSET - 1: -+#endif - - /* - * 2. Now on the top of stack is the return -@@ -47,14 +63,8 @@ ENTRY(efi_call_phys) - * parameter 2, ..., param n. To make things easy, we save the return - * address of efi_call_phys in a global variable. - */ -- popl %edx -- movl %edx, saved_return_addr -- /* get the function pointer into ECX*/ -- popl %ecx -- movl %ecx, efi_rt_function_ptr -- movl $2f, %edx -- subl $__PAGE_OFFSET, %edx -- pushl %edx -+ popl (saved_return_addr) -+ popl (efi_rt_function_ptr) - - /* - * 3. Clear PG bit in %CR0. -@@ -73,9 +83,8 @@ ENTRY(efi_call_phys) - /* - * 5. Call the physical function. - */ -- jmp *%ecx -+ call *(efi_rt_function_ptr-__PAGE_OFFSET) - --2: - /* - * 6. After EFI runtime service returns, control will return to - * following instruction. We'd better readjust stack pointer first. -@@ -88,35 +97,36 @@ ENTRY(efi_call_phys) - movl %cr0, %edx - orl $0x80000000, %edx - movl %edx, %cr0 -- jmp 1f --1: -+ - /* - * 8. Now restore the virtual mode from flat mode by - * adding EIP with PAGE_OFFSET. - */ -- movl $1f, %edx -- jmp *%edx -+#ifdef CONFIG_PAX_KERNEXEC -+ movl $(__KERNEL_DS), %edx -+ mov %edx, %ds -+ mov %edx, %es -+ mov %edx, %ss -+ ljmp $(__KERNEL_CS),$1f -+#else -+ jmp 1f+__PAGE_OFFSET -+#endif - 1: - - /* - * 9. Balance the stack. And because EAX contain the return value, - * we'd better not clobber it. - */ -- leal efi_rt_function_ptr, %edx -- movl (%edx), %ecx -- pushl %ecx -+ pushl (efi_rt_function_ptr) - - /* -- * 10. Push the saved return address onto the stack and return. -+ * 10. Return to the saved return address. - */ -- leal saved_return_addr, %edx -- movl (%edx), %ecx -- pushl %ecx -- ret -+ jmpl *(saved_return_addr) - ENDPROC(efi_call_phys) - .previous - --.data -+__INITDATA - saved_return_addr: - .long 0 - efi_rt_function_ptr: -diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S -index 4c07cca..2c8427d 100644 ---- a/arch/x86/platform/efi/efi_stub_64.S -+++ b/arch/x86/platform/efi/efi_stub_64.S -@@ -7,6 +7,7 @@ - */ - - #include -+#include - - #define SAVE_XMM \ - mov %rsp, %rax; \ -@@ -40,6 +41,7 @@ ENTRY(efi_call0) - call *%rdi - addq $32, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call0) - -@@ -50,6 +52,7 @@ ENTRY(efi_call1) - call *%rdi - addq $32, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call1) - -@@ -60,6 +63,7 @@ ENTRY(efi_call2) - call *%rdi - addq $32, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call2) - -@@ -71,6 +75,7 @@ ENTRY(efi_call3) - call *%rdi - addq $32, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call3) - -@@ -83,6 +88,7 @@ ENTRY(efi_call4) - call *%rdi - addq $32, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call4) - -@@ -96,6 +102,7 @@ ENTRY(efi_call5) - call *%rdi - addq $48, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call5) - -@@ -112,5 +119,6 @@ ENTRY(efi_call6) - call *%rdi - addq $48, %rsp - RESTORE_XMM -+ pax_force_retaddr 0, 1 - ret - ENDPROC(efi_call6) -diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c -index fd41a92..9c33628 100644 ---- a/arch/x86/platform/mrst/mrst.c -+++ b/arch/x86/platform/mrst/mrst.c -@@ -78,13 +78,15 @@ struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX]; - EXPORT_SYMBOL_GPL(sfi_mrtc_array); - int sfi_mrtc_num; - --static void mrst_power_off(void) -+static __noreturn void mrst_power_off(void) - { -+ BUG(); - } - --static void mrst_reboot(void) -+static __noreturn void mrst_reboot(void) - { - intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); -+ BUG(); - } - - /* parse all the mtimer info to a static mtimer array */ -diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c -index 218cdb1..c1178eb 100644 ---- a/arch/x86/power/cpu.c -+++ b/arch/x86/power/cpu.c -@@ -132,7 +132,7 @@ static void do_fpu_end(void) - static void fix_processor_context(void) - { - int cpu = smp_processor_id(); -- struct tss_struct *t = &per_cpu(init_tss, cpu); -+ struct tss_struct *t = init_tss + cpu; - - set_tss_desc(cpu, t); /* - * This just modifies memory; should not be -@@ -142,8 +142,6 @@ static void fix_processor_context(void) - */ - - #ifdef CONFIG_X86_64 -- get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; -- - syscall_init(); /* This sets MSR_*STAR and related */ - #endif - load_TR_desc(); /* This does ltr */ -diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c -index cbca565..bae7133 100644 ---- a/arch/x86/realmode/init.c -+++ b/arch/x86/realmode/init.c -@@ -62,7 +62,13 @@ void __init setup_real_mode(void) - __va(real_mode_header->trampoline_header); - - #ifdef CONFIG_X86_32 -- trampoline_header->start = __pa(startup_32_smp); -+ trampoline_header->start = __pa(ktla_ktva(startup_32_smp)); -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ trampoline_header->start -= LOAD_PHYSICAL_ADDR; -+#endif -+ -+ trampoline_header->boot_cs = __BOOT_CS; - trampoline_header->gdt_limit = __BOOT_DS + 7; - trampoline_header->gdt_base = __pa(boot_gdt); - #else -diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile -index 8869287..d577672 100644 ---- a/arch/x86/realmode/rm/Makefile -+++ b/arch/x86/realmode/rm/Makefile -@@ -78,5 +78,8 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ -D_WAKEUP \ - $(call cc-option, -fno-unit-at-a-time)) \ - $(call cc-option, -fno-stack-protector) \ - $(call cc-option, -mpreferred-stack-boundary=2) -+ifdef CONSTIFY_PLUGIN -+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify -+endif - KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ - GCOV_PROFILE := n -diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S -index a28221d..93c40f1 100644 ---- a/arch/x86/realmode/rm/header.S -+++ b/arch/x86/realmode/rm/header.S -@@ -30,7 +30,9 @@ GLOBAL(real_mode_header) - #endif - /* APM/BIOS reboot */ - .long pa_machine_real_restart_asm --#ifdef CONFIG_X86_64 -+#ifdef CONFIG_X86_32 -+ .long __KERNEL_CS -+#else - .long __KERNEL32_CS - #endif - END(real_mode_header) -diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S -index c1b2791..f9e31c7 100644 ---- a/arch/x86/realmode/rm/trampoline_32.S -+++ b/arch/x86/realmode/rm/trampoline_32.S -@@ -25,6 +25,12 @@ - #include - #include "realmode.h" - -+#ifdef CONFIG_PAX_KERNEXEC -+#define ta(X) (X) -+#else -+#define ta(X) (pa_ ## X) -+#endif -+ - .text - .code16 - -@@ -39,8 +45,6 @@ ENTRY(trampoline_start) - - cli # We should be safe anyway - -- movl tr_start, %eax # where we need to go -- - movl $0xA5A5A5A5, trampoline_status - # write marker for master knows we're running - -@@ -56,7 +60,7 @@ ENTRY(trampoline_start) - movw $1, %dx # protected mode (PE) bit - lmsw %dx # into protected mode - -- ljmpl $__BOOT_CS, $pa_startup_32 -+ ljmpl *(trampoline_header) - - .section ".text32","ax" - .code32 -@@ -67,7 +71,7 @@ ENTRY(startup_32) # note: also used from wakeup_asm.S - .balign 8 - GLOBAL(trampoline_header) - tr_start: .space 4 -- tr_gdt_pad: .space 2 -+ tr_boot_cs: .space 2 - tr_gdt: .space 6 - END(trampoline_header) - -diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S -index bb360dc..3e5945f 100644 ---- a/arch/x86/realmode/rm/trampoline_64.S -+++ b/arch/x86/realmode/rm/trampoline_64.S -@@ -107,7 +107,7 @@ ENTRY(startup_32) - wrmsr - - # Enable paging and in turn activate Long Mode -- movl $(X86_CR0_PG | X86_CR0_WP | X86_CR0_PE), %eax -+ movl $(X86_CR0_PG | X86_CR0_PE), %eax - movl %eax, %cr0 - - /* -diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c -index 5a1847d..deccb30 100644 ---- a/arch/x86/tools/relocs.c -+++ b/arch/x86/tools/relocs.c -@@ -12,10 +12,13 @@ - #include - #include - -+#include "../../../include/generated/autoconf.h" -+ - static void die(char *fmt, ...); - - #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - static Elf32_Ehdr ehdr; -+static Elf32_Phdr *phdr; - static unsigned long reloc_count, reloc_idx; - static unsigned long *relocs; - static unsigned long reloc16_count, reloc16_idx; -@@ -330,9 +333,39 @@ static void read_ehdr(FILE *fp) - } - } - -+static void read_phdrs(FILE *fp) -+{ -+ unsigned int i; -+ -+ phdr = calloc(ehdr.e_phnum, sizeof(Elf32_Phdr)); -+ if (!phdr) { -+ die("Unable to allocate %d program headers\n", -+ ehdr.e_phnum); -+ } -+ if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) { -+ die("Seek to %d failed: %s\n", -+ ehdr.e_phoff, strerror(errno)); -+ } -+ if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) { -+ die("Cannot read ELF program headers: %s\n", -+ strerror(errno)); -+ } -+ for(i = 0; i < ehdr.e_phnum; i++) { -+ phdr[i].p_type = elf32_to_cpu(phdr[i].p_type); -+ phdr[i].p_offset = elf32_to_cpu(phdr[i].p_offset); -+ phdr[i].p_vaddr = elf32_to_cpu(phdr[i].p_vaddr); -+ phdr[i].p_paddr = elf32_to_cpu(phdr[i].p_paddr); -+ phdr[i].p_filesz = elf32_to_cpu(phdr[i].p_filesz); -+ phdr[i].p_memsz = elf32_to_cpu(phdr[i].p_memsz); -+ phdr[i].p_flags = elf32_to_cpu(phdr[i].p_flags); -+ phdr[i].p_align = elf32_to_cpu(phdr[i].p_align); -+ } -+ -+} -+ - static void read_shdrs(FILE *fp) - { -- int i; -+ unsigned int i; - Elf32_Shdr shdr; - - secs = calloc(ehdr.e_shnum, sizeof(struct section)); -@@ -367,7 +400,7 @@ static void read_shdrs(FILE *fp) - - static void read_strtabs(FILE *fp) - { -- int i; -+ unsigned int i; - for (i = 0; i < ehdr.e_shnum; i++) { - struct section *sec = &secs[i]; - if (sec->shdr.sh_type != SHT_STRTAB) { -@@ -392,7 +425,7 @@ static void read_strtabs(FILE *fp) - - static void read_symtabs(FILE *fp) - { -- int i,j; -+ unsigned int i,j; - for (i = 0; i < ehdr.e_shnum; i++) { - struct section *sec = &secs[i]; - if (sec->shdr.sh_type != SHT_SYMTAB) { -@@ -423,9 +456,11 @@ static void read_symtabs(FILE *fp) - } - - --static void read_relocs(FILE *fp) -+static void read_relocs(FILE *fp, int use_real_mode) - { -- int i,j; -+ unsigned int i,j; -+ uint32_t base; -+ - for (i = 0; i < ehdr.e_shnum; i++) { - struct section *sec = &secs[i]; - if (sec->shdr.sh_type != SHT_REL) { -@@ -445,9 +480,22 @@ static void read_relocs(FILE *fp) - die("Cannot read symbol table: %s\n", - strerror(errno)); - } -+ base = 0; -+ -+#ifdef CONFIG_X86_32 -+ for (j = 0; !use_real_mode && j < ehdr.e_phnum; j++) { -+ if (phdr[j].p_type != PT_LOAD ) -+ continue; -+ if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz) -+ continue; -+ base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr; -+ break; -+ } -+#endif -+ - for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) { - Elf32_Rel *rel = &sec->reltab[j]; -- rel->r_offset = elf32_to_cpu(rel->r_offset); -+ rel->r_offset = elf32_to_cpu(rel->r_offset) + base; - rel->r_info = elf32_to_cpu(rel->r_info); - } - } -@@ -456,13 +504,13 @@ static void read_relocs(FILE *fp) - - static void print_absolute_symbols(void) - { -- int i; -+ unsigned int i; - printf("Absolute symbols\n"); - printf(" Num: Value Size Type Bind Visibility Name\n"); - for (i = 0; i < ehdr.e_shnum; i++) { - struct section *sec = &secs[i]; - char *sym_strtab; -- int j; -+ unsigned int j; - - if (sec->shdr.sh_type != SHT_SYMTAB) { - continue; -@@ -489,14 +537,14 @@ static void print_absolute_symbols(void) - - static void print_absolute_relocs(void) - { -- int i, printed = 0; -+ unsigned int i, printed = 0; - - for (i = 0; i < ehdr.e_shnum; i++) { - struct section *sec = &secs[i]; - struct section *sec_applies, *sec_symtab; - char *sym_strtab; - Elf32_Sym *sh_symtab; -- int j; -+ unsigned int j; - if (sec->shdr.sh_type != SHT_REL) { - continue; - } -@@ -558,13 +606,13 @@ static void print_absolute_relocs(void) - static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym), - int use_real_mode) - { -- int i; -+ unsigned int i; - /* Walk through the relocations */ - for (i = 0; i < ehdr.e_shnum; i++) { - char *sym_strtab; - Elf32_Sym *sh_symtab; - struct section *sec_applies, *sec_symtab; -- int j; -+ unsigned int j; - struct section *sec = &secs[i]; - - if (sec->shdr.sh_type != SHT_REL) { -@@ -588,6 +636,24 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym), - sym = &sh_symtab[ELF32_R_SYM(rel->r_info)]; - r_type = ELF32_R_TYPE(rel->r_info); - -+ if (!use_real_mode) { -+ /* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */ -+ if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load")) -+ continue; -+ -+#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32) -+ /* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */ -+ if (!strcmp(sec_name(sym->st_shndx), ".text.end") && !strcmp(sym_name(sym_strtab, sym), "_etext")) -+ continue; -+ if (!strcmp(sec_name(sym->st_shndx), ".init.text")) -+ continue; -+ if (!strcmp(sec_name(sym->st_shndx), ".exit.text")) -+ continue; -+ if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR")) -+ continue; -+#endif -+ } -+ - shn_abs = sym->st_shndx == SHN_ABS; - - switch (r_type) { -@@ -681,7 +747,7 @@ static int write32(unsigned int v, FILE *f) - - static void emit_relocs(int as_text, int use_real_mode) - { -- int i; -+ unsigned int i; - /* Count how many relocations I have and allocate space for them. */ - reloc_count = 0; - walk_relocs(count_reloc, use_real_mode); -@@ -808,10 +874,11 @@ int main(int argc, char **argv) - fname, strerror(errno)); - } - read_ehdr(fp); -+ read_phdrs(fp); - read_shdrs(fp); - read_strtabs(fp); - read_symtabs(fp); -- read_relocs(fp); -+ read_relocs(fp, use_real_mode); - if (show_absolute_syms) { - print_absolute_symbols(); - return 0; -diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile -index fd14be1..e3c79c0 100644 ---- a/arch/x86/vdso/Makefile -+++ b/arch/x86/vdso/Makefile -@@ -181,7 +181,7 @@ quiet_cmd_vdso = VDSO $@ - -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \ - sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@' - --VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) -+VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) - GCOV_PROFILE := n - - # -diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c -index 0faad64..39ef157 100644 ---- a/arch/x86/vdso/vdso32-setup.c -+++ b/arch/x86/vdso/vdso32-setup.c -@@ -25,6 +25,7 @@ - #include - #include - #include -+#include - - enum { - VDSO_DISABLED = 0, -@@ -226,7 +227,7 @@ static inline void map_compat_vdso(int map) - void enable_sep_cpu(void) - { - int cpu = get_cpu(); -- struct tss_struct *tss = &per_cpu(init_tss, cpu); -+ struct tss_struct *tss = init_tss + cpu; - - if (!boot_cpu_has(X86_FEATURE_SEP)) { - put_cpu(); -@@ -249,7 +250,7 @@ static int __init gate_vma_init(void) - gate_vma.vm_start = FIXADDR_USER_START; - gate_vma.vm_end = FIXADDR_USER_END; - gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; -- gate_vma.vm_page_prot = __P101; -+ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags); - - return 0; - } -@@ -330,14 +331,14 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) - if (compat) - addr = VDSO_HIGH_BASE; - else { -- addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0); -+ addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, MAP_EXECUTABLE); - if (IS_ERR_VALUE(addr)) { - ret = addr; - goto up_fail; - } - } - -- current->mm->context.vdso = (void *)addr; -+ current->mm->context.vdso = addr; - - if (compat_uses_vma || !compat) { - /* -@@ -353,11 +354,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) - } - - current_thread_info()->sysenter_return = -- VDSO32_SYMBOL(addr, SYSENTER_RETURN); -+ (__force void __user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN); - - up_fail: - if (ret) -- current->mm->context.vdso = NULL; -+ current->mm->context.vdso = 0; - - up_write(&mm->mmap_sem); - -@@ -404,8 +405,14 @@ __initcall(ia32_binfmt_init); - - const char *arch_vma_name(struct vm_area_struct *vma) - { -- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) -+ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) - return "[vdso]"; -+ -+#ifdef CONFIG_PAX_SEGMEXEC -+ if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso) -+ return "[vdso]"; -+#endif -+ - return NULL; - } - -@@ -415,7 +422,7 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm) - * Check to see if the corresponding task was created in compat vdso - * mode. - */ -- if (mm && mm->context.vdso == (void *)VDSO_HIGH_BASE) -+ if (mm && mm->context.vdso == VDSO_HIGH_BASE) - return &gate_vma; - return NULL; - } -diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c -index 00aaf04..4a26505 100644 ---- a/arch/x86/vdso/vma.c -+++ b/arch/x86/vdso/vma.c -@@ -16,8 +16,6 @@ - #include - #include - --unsigned int __read_mostly vdso_enabled = 1; -- - extern char vdso_start[], vdso_end[]; - extern unsigned short vdso_sync_cpuid; - -@@ -141,7 +139,6 @@ static unsigned long vdso_addr(unsigned long start, unsigned len) - * unaligned here as a result of stack start randomization. - */ - addr = PAGE_ALIGN(addr); -- addr = align_addr(addr, NULL, ALIGN_VDSO); - - return addr; - } -@@ -154,30 +151,31 @@ static int setup_additional_pages(struct linux_binprm *bprm, - unsigned size) - { - struct mm_struct *mm = current->mm; -- unsigned long addr; -+ unsigned long addr = 0; - int ret; - -- if (!vdso_enabled) -- return 0; -- - down_write(&mm->mmap_sem); -+ -+#ifdef CONFIG_PAX_RANDMMAP -+ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) -+#endif -+ - addr = vdso_addr(mm->start_stack, size); -+ addr = align_addr(addr, NULL, ALIGN_VDSO); - addr = get_unmapped_area(NULL, addr, size, 0, 0); - if (IS_ERR_VALUE(addr)) { - ret = addr; - goto up_fail; - } - -- current->mm->context.vdso = (void *)addr; -+ mm->context.vdso = addr; - - ret = install_special_mapping(mm, addr, size, - VM_READ|VM_EXEC| - VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC, - pages); -- if (ret) { -- current->mm->context.vdso = NULL; -- goto up_fail; -- } -+ if (ret) -+ mm->context.vdso = 0; - - up_fail: - up_write(&mm->mmap_sem); -@@ -197,10 +195,3 @@ int x32_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) - vdsox32_size); - } - #endif -- --static __init int vdso_setup(char *s) --{ -- vdso_enabled = simple_strtoul(s, NULL, 0); -- return 0; --} --__setup("vdso=", vdso_setup); -diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c -index c1461de..355f120 100644 ---- a/arch/x86/xen/enlighten.c -+++ b/arch/x86/xen/enlighten.c -@@ -98,8 +98,6 @@ EXPORT_SYMBOL_GPL(xen_start_info); - - struct shared_info xen_dummy_shared_info; - --void *xen_initial_gdt; -- - RESERVE_BRK(shared_info_page_brk, PAGE_SIZE); - __read_mostly int xen_have_vector_callback; - EXPORT_SYMBOL_GPL(xen_have_vector_callback); -@@ -917,21 +915,21 @@ static u32 xen_safe_apic_wait_icr_idle(void) - - static void set_xen_basic_apic_ops(void) - { -- apic->read = xen_apic_read; -- apic->write = xen_apic_write; -- apic->icr_read = xen_apic_icr_read; -- apic->icr_write = xen_apic_icr_write; -- apic->wait_icr_idle = xen_apic_wait_icr_idle; -- apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; -- apic->set_apic_id = xen_set_apic_id; -- apic->get_apic_id = xen_get_apic_id; -+ *(void **)&apic->read = xen_apic_read; -+ *(void **)&apic->write = xen_apic_write; -+ *(void **)&apic->icr_read = xen_apic_icr_read; -+ *(void **)&apic->icr_write = xen_apic_icr_write; -+ *(void **)&apic->wait_icr_idle = xen_apic_wait_icr_idle; -+ *(void **)&apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; -+ *(void **)&apic->set_apic_id = xen_set_apic_id; -+ *(void **)&apic->get_apic_id = xen_get_apic_id; - - #ifdef CONFIG_SMP -- apic->send_IPI_allbutself = xen_send_IPI_allbutself; -- apic->send_IPI_mask_allbutself = xen_send_IPI_mask_allbutself; -- apic->send_IPI_mask = xen_send_IPI_mask; -- apic->send_IPI_all = xen_send_IPI_all; -- apic->send_IPI_self = xen_send_IPI_self; -+ *(void **)&apic->send_IPI_allbutself = xen_send_IPI_allbutself; -+ *(void **)&apic->send_IPI_mask_allbutself = xen_send_IPI_mask_allbutself; -+ *(void **)&apic->send_IPI_mask = xen_send_IPI_mask; -+ *(void **)&apic->send_IPI_all = xen_send_IPI_all; -+ *(void **)&apic->send_IPI_self = xen_send_IPI_self; - #endif - } - -@@ -1221,30 +1219,30 @@ static const struct pv_apic_ops xen_apic_ops __initconst = { - #endif - }; - --static void xen_reboot(int reason) -+static __noreturn void xen_reboot(int reason) - { - struct sched_shutdown r = { .reason = reason }; - -- if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r)) -- BUG(); -+ HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); -+ BUG(); - } - --static void xen_restart(char *msg) -+static __noreturn void xen_restart(char *msg) - { - xen_reboot(SHUTDOWN_reboot); - } - --static void xen_emergency_restart(void) -+static __noreturn void xen_emergency_restart(void) - { - xen_reboot(SHUTDOWN_reboot); - } - --static void xen_machine_halt(void) -+static __noreturn void xen_machine_halt(void) - { - xen_reboot(SHUTDOWN_poweroff); - } - --static void xen_machine_power_off(void) -+static __noreturn void xen_machine_power_off(void) - { - if (pm_power_off) - pm_power_off(); -@@ -1347,7 +1345,17 @@ asmlinkage void __init xen_start_kernel(void) - __userpte_alloc_gfp &= ~__GFP_HIGHMEM; - - /* Work out if we support NX */ -- x86_configure_nx(); -+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) -+ if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 && -+ (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) { -+ unsigned l, h; -+ -+ __supported_pte_mask |= _PAGE_NX; -+ rdmsr(MSR_EFER, l, h); -+ l |= EFER_NX; -+ wrmsr(MSR_EFER, l, h); -+ } -+#endif - - xen_setup_features(); - -@@ -1378,13 +1386,6 @@ asmlinkage void __init xen_start_kernel(void) - - machine_ops = xen_machine_ops; - -- /* -- * The only reliable way to retain the initial address of the -- * percpu gdt_page is to remember it here, so we can go and -- * mark it RW later, when the initial percpu area is freed. -- */ -- xen_initial_gdt = &per_cpu(gdt_page, 0); -- - xen_smp_init(); - - #ifdef CONFIG_ACPI_NUMA -diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c -index dde1a3f..6b663e6 100644 ---- a/arch/x86/xen/mmu.c -+++ b/arch/x86/xen/mmu.c -@@ -1784,6 +1784,9 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, - convert_pfn_mfn(init_level4_pgt); - convert_pfn_mfn(level3_ident_pgt); - convert_pfn_mfn(level3_kernel_pgt); -+ convert_pfn_mfn(level3_vmalloc_start_pgt); -+ convert_pfn_mfn(level3_vmalloc_end_pgt); -+ convert_pfn_mfn(level3_vmemmap_pgt); - - l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd); - l2 = m2v(l3[pud_index(__START_KERNEL_map)].pud); -@@ -1802,7 +1805,11 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, - set_page_prot(init_level4_pgt, PAGE_KERNEL_RO); - set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO); - set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO); -+ set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO); -+ set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO); -+ set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO); - set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO); -+ set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO); - set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO); - set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO); - -@@ -1986,6 +1993,7 @@ static void __init xen_post_allocator_init(void) - pv_mmu_ops.set_pud = xen_set_pud; - #if PAGETABLE_LEVELS == 4 - pv_mmu_ops.set_pgd = xen_set_pgd; -+ pv_mmu_ops.set_pgd_batched = xen_set_pgd; - #endif - - /* This will work as long as patching hasn't happened yet -@@ -2067,6 +2075,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = { - .pud_val = PV_CALLEE_SAVE(xen_pud_val), - .make_pud = PV_CALLEE_SAVE(xen_make_pud), - .set_pgd = xen_set_pgd_hyper, -+ .set_pgd_batched = xen_set_pgd_hyper, - - .alloc_pud = xen_alloc_pmd_init, - .release_pud = xen_release_pmd_init, -diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c -index f58dca7..ad21f52 100644 ---- a/arch/x86/xen/smp.c -+++ b/arch/x86/xen/smp.c -@@ -229,11 +229,6 @@ static void __init xen_smp_prepare_boot_cpu(void) - { - BUG_ON(smp_processor_id() != 0); - native_smp_prepare_boot_cpu(); -- -- /* We've switched to the "real" per-cpu gdt, so make sure the -- old memory can be recycled */ -- make_lowmem_page_readwrite(xen_initial_gdt); -- - xen_filter_cpu_maps(); - xen_setup_vcpu_info_placement(); - } -@@ -300,12 +295,12 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) - gdt = get_cpu_gdt_table(cpu); - - ctxt->flags = VGCF_IN_KERNEL; -- ctxt->user_regs.ds = __USER_DS; -- ctxt->user_regs.es = __USER_DS; -+ ctxt->user_regs.ds = __KERNEL_DS; -+ ctxt->user_regs.es = __KERNEL_DS; - ctxt->user_regs.ss = __KERNEL_DS; - #ifdef CONFIG_X86_32 - ctxt->user_regs.fs = __KERNEL_PERCPU; -- ctxt->user_regs.gs = __KERNEL_STACK_CANARY; -+ savesegment(gs, ctxt->user_regs.gs); - #else - ctxt->gs_base_kernel = per_cpu_offset(cpu); - #endif -@@ -355,13 +350,12 @@ static int __cpuinit xen_cpu_up(unsigned int cpu, struct task_struct *idle) - int rc; - - per_cpu(current_task, cpu) = idle; -+ per_cpu(current_tinfo, cpu) = &idle->tinfo; - #ifdef CONFIG_X86_32 - irq_ctx_init(cpu); - #else - clear_tsk_thread_flag(idle, TIF_FORK); -- per_cpu(kernel_stack, cpu) = -- (unsigned long)task_stack_page(idle) - -- KERNEL_STACK_OFFSET + THREAD_SIZE; -+ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE; - #endif - xen_setup_runstate_info(cpu); - xen_setup_timer(cpu); -diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S -index 33ca6e4..0ded929 100644 ---- a/arch/x86/xen/xen-asm_32.S -+++ b/arch/x86/xen/xen-asm_32.S -@@ -84,14 +84,14 @@ ENTRY(xen_iret) - ESP_OFFSET=4 # bytes pushed onto stack - - /* -- * Store vcpu_info pointer for easy access. Do it this way to -- * avoid having to reload %fs -+ * Store vcpu_info pointer for easy access. - */ - #ifdef CONFIG_SMP -- GET_THREAD_INFO(%eax) -- movl %ss:TI_cpu(%eax), %eax -- movl %ss:__per_cpu_offset(,%eax,4), %eax -- mov %ss:xen_vcpu(%eax), %eax -+ push %fs -+ mov $(__KERNEL_PERCPU), %eax -+ mov %eax, %fs -+ mov PER_CPU_VAR(xen_vcpu), %eax -+ pop %fs - #else - movl %ss:xen_vcpu, %eax - #endif -diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S -index aaa7291..3f77960 100644 ---- a/arch/x86/xen/xen-head.S -+++ b/arch/x86/xen/xen-head.S -@@ -19,6 +19,17 @@ ENTRY(startup_xen) - #ifdef CONFIG_X86_32 - mov %esi,xen_start_info - mov $init_thread_union+THREAD_SIZE,%esp -+#ifdef CONFIG_SMP -+ movl $cpu_gdt_table,%edi -+ movl $__per_cpu_load,%eax -+ movw %ax,__KERNEL_PERCPU + 2(%edi) -+ rorl $16,%eax -+ movb %al,__KERNEL_PERCPU + 4(%edi) -+ movb %ah,__KERNEL_PERCPU + 7(%edi) -+ movl $__per_cpu_end - 1,%eax -+ subl $__per_cpu_start,%eax -+ movw %ax,__KERNEL_PERCPU + 0(%edi) -+#endif - #else - mov %rsi,xen_start_info - mov $init_thread_union+THREAD_SIZE,%rsp -diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h -index 202d4c1..99b072a 100644 ---- a/arch/x86/xen/xen-ops.h -+++ b/arch/x86/xen/xen-ops.h -@@ -10,8 +10,6 @@ - extern const char xen_hypervisor_callback[]; - extern const char xen_failsafe_callback[]; - --extern void *xen_initial_gdt; -- - struct trap_info; - void xen_copy_trap_info(struct trap_info *traps); - -diff --git a/arch/xtensa/variants/dc232b/include/variant/core.h b/arch/xtensa/variants/dc232b/include/variant/core.h -index 525bd3d..ef888b1 100644 ---- a/arch/xtensa/variants/dc232b/include/variant/core.h -+++ b/arch/xtensa/variants/dc232b/include/variant/core.h -@@ -119,9 +119,9 @@ - ----------------------------------------------------------------------*/ - - #define XCHAL_ICACHE_LINESIZE 32 /* I-cache line size in bytes */ --#define XCHAL_DCACHE_LINESIZE 32 /* D-cache line size in bytes */ - #define XCHAL_ICACHE_LINEWIDTH 5 /* log2(I line size in bytes) */ - #define XCHAL_DCACHE_LINEWIDTH 5 /* log2(D line size in bytes) */ -+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ - - #define XCHAL_ICACHE_SIZE 16384 /* I-cache size in bytes or 0 */ - #define XCHAL_DCACHE_SIZE 16384 /* D-cache size in bytes or 0 */ -diff --git a/arch/xtensa/variants/fsf/include/variant/core.h b/arch/xtensa/variants/fsf/include/variant/core.h -index 2f33760..835e50a 100644 ---- a/arch/xtensa/variants/fsf/include/variant/core.h -+++ b/arch/xtensa/variants/fsf/include/variant/core.h -@@ -11,6 +11,7 @@ - #ifndef _XTENSA_CORE_H - #define _XTENSA_CORE_H - -+#include - - /**************************************************************************** - Parameters Useful for Any Code, USER or PRIVILEGED -@@ -112,9 +113,9 @@ - ----------------------------------------------------------------------*/ - - #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */ --#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */ - #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */ - #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */ -+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ - - #define XCHAL_ICACHE_SIZE 8192 /* I-cache size in bytes or 0 */ - #define XCHAL_DCACHE_SIZE 8192 /* D-cache size in bytes or 0 */ -diff --git a/arch/xtensa/variants/s6000/include/variant/core.h b/arch/xtensa/variants/s6000/include/variant/core.h -index af00795..2bb8105 100644 ---- a/arch/xtensa/variants/s6000/include/variant/core.h -+++ b/arch/xtensa/variants/s6000/include/variant/core.h -@@ -11,6 +11,7 @@ - #ifndef _XTENSA_CORE_CONFIGURATION_H - #define _XTENSA_CORE_CONFIGURATION_H - -+#include - - /**************************************************************************** - Parameters Useful for Any Code, USER or PRIVILEGED -@@ -118,9 +119,9 @@ - ----------------------------------------------------------------------*/ - - #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */ --#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */ - #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */ - #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */ -+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ - - #define XCHAL_ICACHE_SIZE 32768 /* I-cache size in bytes or 0 */ - #define XCHAL_DCACHE_SIZE 32768 /* D-cache size in bytes or 0 */ -diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c -index 58916af..9cb880b 100644 ---- a/block/blk-iopoll.c -+++ b/block/blk-iopoll.c -@@ -77,7 +77,7 @@ void blk_iopoll_complete(struct blk_iopoll *iopoll) - } - EXPORT_SYMBOL(blk_iopoll_complete); - --static void blk_iopoll_softirq(struct softirq_action *h) -+static void blk_iopoll_softirq(void) - { - struct list_head *list = &__get_cpu_var(blk_cpu_iopoll); - int rearm = 0, budget = blk_iopoll_budget; -diff --git a/block/blk-map.c b/block/blk-map.c -index 623e1cd..ca1e109 100644 ---- a/block/blk-map.c -+++ b/block/blk-map.c -@@ -302,7 +302,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf, - if (!len || !kbuf) - return -EINVAL; - -- do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf); -+ do_copy = !blk_rq_aligned(q, addr, len) || object_starts_on_stack(kbuf); - if (do_copy) - bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading); - else -diff --git a/block/blk-softirq.c b/block/blk-softirq.c -index 467c8de..4bddc6d 100644 ---- a/block/blk-softirq.c -+++ b/block/blk-softirq.c -@@ -18,7 +18,7 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_done); - * Softirq action handler - move entries to local list and loop over them - * while passing them to the queue registered handler. - */ --static void blk_done_softirq(struct softirq_action *h) -+static void blk_done_softirq(void) - { - struct list_head *cpu_list, local_list; - -diff --git a/block/bsg.c b/block/bsg.c -index ff64ae3..593560c 100644 ---- a/block/bsg.c -+++ b/block/bsg.c -@@ -176,16 +176,24 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq, - struct sg_io_v4 *hdr, struct bsg_device *bd, - fmode_t has_write_perm) - { -+ unsigned char tmpcmd[sizeof(rq->__cmd)]; -+ unsigned char *cmdptr; -+ - if (hdr->request_len > BLK_MAX_CDB) { - rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL); - if (!rq->cmd) - return -ENOMEM; -- } -+ cmdptr = rq->cmd; -+ } else -+ cmdptr = tmpcmd; - -- if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request, -+ if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request, - hdr->request_len)) - return -EFAULT; - -+ if (cmdptr != rq->cmd) -+ memcpy(rq->cmd, cmdptr, hdr->request_len); -+ - if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) { - if (blk_verify_command(rq->cmd, has_write_perm)) - return -EPERM; -diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c -index 7c668c8..db3521c 100644 ---- a/block/compat_ioctl.c -+++ b/block/compat_ioctl.c -@@ -340,7 +340,7 @@ static int compat_fd_ioctl(struct block_device *bdev, fmode_t mode, - err |= __get_user(f->spec1, &uf->spec1); - err |= __get_user(f->fmt_gap, &uf->fmt_gap); - err |= __get_user(name, &uf->name); -- f->name = compat_ptr(name); -+ f->name = (void __force_kernel *)compat_ptr(name); - if (err) { - err = -EFAULT; - goto out; -diff --git a/block/partitions/efi.c b/block/partitions/efi.c -index 6296b40..417c00f 100644 ---- a/block/partitions/efi.c -+++ b/block/partitions/efi.c -@@ -234,14 +234,14 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state, - if (!gpt) - return NULL; - -- count = le32_to_cpu(gpt->num_partition_entries) * -- le32_to_cpu(gpt->sizeof_partition_entry); -- if (!count) -+ if (!le32_to_cpu(gpt->num_partition_entries)) - return NULL; -- pte = kzalloc(count, GFP_KERNEL); -+ pte = kcalloc(le32_to_cpu(gpt->num_partition_entries), le32_to_cpu(gpt->sizeof_partition_entry), GFP_KERNEL); - if (!pte) - return NULL; - -+ count = le32_to_cpu(gpt->num_partition_entries) * -+ le32_to_cpu(gpt->sizeof_partition_entry); - if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba), - (u8 *) pte, - count) < count) { -diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c -index 9a87daa..fb17486 100644 ---- a/block/scsi_ioctl.c -+++ b/block/scsi_ioctl.c -@@ -223,8 +223,20 @@ EXPORT_SYMBOL(blk_verify_command); - static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, - struct sg_io_hdr *hdr, fmode_t mode) - { -- if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) -+ unsigned char tmpcmd[sizeof(rq->__cmd)]; -+ unsigned char *cmdptr; -+ -+ if (rq->cmd != rq->__cmd) -+ cmdptr = rq->cmd; -+ else -+ cmdptr = tmpcmd; -+ -+ if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len)) - return -EFAULT; -+ -+ if (cmdptr != rq->cmd) -+ memcpy(rq->cmd, cmdptr, hdr->cmd_len); -+ - if (blk_verify_command(rq->cmd, mode & FMODE_WRITE)) - return -EPERM; - -@@ -433,6 +445,8 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, - int err; - unsigned int in_len, out_len, bytes, opcode, cmdlen; - char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; -+ unsigned char tmpcmd[sizeof(rq->__cmd)]; -+ unsigned char *cmdptr; - - if (!sic) - return -EINVAL; -@@ -466,9 +480,18 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, - */ - err = -EFAULT; - rq->cmd_len = cmdlen; -- if (copy_from_user(rq->cmd, sic->data, cmdlen)) -+ -+ if (rq->cmd != rq->__cmd) -+ cmdptr = rq->cmd; -+ else -+ cmdptr = tmpcmd; -+ -+ if (copy_from_user(cmdptr, sic->data, cmdlen)) - goto error; - -+ if (rq->cmd != cmdptr) -+ memcpy(rq->cmd, cmdptr, cmdlen); -+ - if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) - goto error; - -diff --git a/crypto/cryptd.c b/crypto/cryptd.c -index 7bdd61b..afec999 100644 ---- a/crypto/cryptd.c -+++ b/crypto/cryptd.c -@@ -63,7 +63,7 @@ struct cryptd_blkcipher_ctx { - - struct cryptd_blkcipher_request_ctx { - crypto_completion_t complete; --}; -+} __no_const; - - struct cryptd_hash_ctx { - struct crypto_shash *child; -@@ -80,7 +80,7 @@ struct cryptd_aead_ctx { - - struct cryptd_aead_request_ctx { - crypto_completion_t complete; --}; -+} __no_const; - - static void cryptd_queue_worker(struct work_struct *work); - -diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c -index e6defd8..c26a225 100644 ---- a/drivers/acpi/apei/cper.c -+++ b/drivers/acpi/apei/cper.c -@@ -38,12 +38,12 @@ - */ - u64 cper_next_record_id(void) - { -- static atomic64_t seq; -+ static atomic64_unchecked_t seq; - -- if (!atomic64_read(&seq)) -- atomic64_set(&seq, ((u64)get_seconds()) << 32); -+ if (!atomic64_read_unchecked(&seq)) -+ atomic64_set_unchecked(&seq, ((u64)get_seconds()) << 32); - -- return atomic64_inc_return(&seq); -+ return atomic64_inc_return_unchecked(&seq); - } - EXPORT_SYMBOL_GPL(cper_next_record_id); - -diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c -index 7586544..636a2f0 100644 ---- a/drivers/acpi/ec_sys.c -+++ b/drivers/acpi/ec_sys.c -@@ -12,6 +12,7 @@ - #include - #include - #include -+#include - #include "internal.h" - - MODULE_AUTHOR("Thomas Renninger "); -@@ -34,7 +35,7 @@ static ssize_t acpi_ec_read_io(struct file *f, char __user *buf, - * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private; - */ - unsigned int size = EC_SPACE_SIZE; -- u8 *data = (u8 *) buf; -+ u8 data; - loff_t init_off = *off; - int err = 0; - -@@ -47,9 +48,11 @@ static ssize_t acpi_ec_read_io(struct file *f, char __user *buf, - size = count; - - while (size) { -- err = ec_read(*off, &data[*off - init_off]); -+ err = ec_read(*off, &data); - if (err) - return err; -+ if (put_user(data, &buf[*off - init_off])) -+ return -EFAULT; - *off += 1; - size--; - } -@@ -65,7 +68,6 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf, - - unsigned int size = count; - loff_t init_off = *off; -- u8 *data = (u8 *) buf; - int err = 0; - - if (*off >= EC_SPACE_SIZE) -@@ -76,7 +78,9 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf, - } - - while (size) { -- u8 byte_write = data[*off - init_off]; -+ u8 byte_write; -+ if (get_user(byte_write, &buf[*off - init_off])) -+ return -EFAULT; - err = ec_write(*off, byte_write); - if (err) - return err; -diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c -index 251c7b62..000462d 100644 ---- a/drivers/acpi/proc.c -+++ b/drivers/acpi/proc.c -@@ -343,19 +343,13 @@ acpi_system_write_wakeup_device(struct file *file, - size_t count, loff_t * ppos) - { - struct list_head *node, *next; -- char strbuf[5]; -- char str[5] = ""; -- unsigned int len = count; -+ char strbuf[5] = {0}; - -- if (len > 4) -- len = 4; -- if (len < 0) -+ if (count > 4) -+ count = 4; -+ if (copy_from_user(strbuf, buffer, count)) - return -EFAULT; -- -- if (copy_from_user(strbuf, buffer, len)) -- return -EFAULT; -- strbuf[len] = '\0'; -- sscanf(strbuf, "%s", str); -+ strbuf[count] = '\0'; - - mutex_lock(&acpi_device_lock); - list_for_each_safe(node, next, &acpi_wakeup_device_list) { -@@ -364,7 +358,7 @@ acpi_system_write_wakeup_device(struct file *file, - if (!dev->wakeup.flags.valid) - continue; - -- if (!strncmp(dev->pnp.bus_id, str, 4)) { -+ if (!strncmp(dev->pnp.bus_id, strbuf, 4)) { - if (device_can_wakeup(&dev->dev)) { - bool enable = !device_may_wakeup(&dev->dev); - device_set_wakeup_enable(&dev->dev, enable); -diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c -index bebe17f..3d0c1d8 100644 ---- a/drivers/acpi/processor_driver.c -+++ b/drivers/acpi/processor_driver.c -@@ -552,7 +552,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) - return 0; - #endif - -- BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0)); -+ BUG_ON(pr->id >= nr_cpu_ids); - - /* - * Buggy BIOS check -diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c -index 8789aef..ffb3ec7 100644 ---- a/drivers/ata/libata-core.c -+++ b/drivers/ata/libata-core.c -@@ -4751,7 +4751,7 @@ void ata_qc_free(struct ata_queued_cmd *qc) - struct ata_port *ap; - unsigned int tag; - -- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ -+ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ - ap = qc->ap; - - qc->flags = 0; -@@ -4767,7 +4767,7 @@ void __ata_qc_complete(struct ata_queued_cmd *qc) - struct ata_port *ap; - struct ata_link *link; - -- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ -+ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ - WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); - ap = qc->ap; - link = qc->dev->link; -@@ -5829,6 +5829,7 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops) - return; - - spin_lock(&lock); -+ pax_open_kernel(); - - for (cur = ops->inherits; cur; cur = cur->inherits) { - void **inherit = (void **)cur; -@@ -5842,8 +5843,9 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops) - if (IS_ERR(*pp)) - *pp = NULL; - -- ops->inherits = NULL; -+ *(struct ata_port_operations **)&ops->inherits = NULL; - -+ pax_close_kernel(); - spin_unlock(&lock); - } - -diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c -index bfaa5cb..3ba1cc3 100644 ---- a/drivers/ata/pata_arasan_cf.c -+++ b/drivers/ata/pata_arasan_cf.c -@@ -854,7 +854,9 @@ static int __devinit arasan_cf_probe(struct platform_device *pdev) - /* Handle platform specific quirks */ - if (pdata->quirk) { - if (pdata->quirk & CF_BROKEN_PIO) { -- ap->ops->set_piomode = NULL; -+ pax_open_kernel(); -+ *(void **)&ap->ops->set_piomode = NULL; -+ pax_close_kernel(); - ap->pio_mask = 0; - } - if (pdata->quirk & CF_BROKEN_MWDMA) -diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c -index f9b983a..887b9d8 100644 ---- a/drivers/atm/adummy.c -+++ b/drivers/atm/adummy.c -@@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct sk_buff *skb) - vcc->pop(vcc, skb); - else - dev_kfree_skb_any(skb); -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - - return 0; - } -diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c -index 89b30f3..7964211d4 100644 ---- a/drivers/atm/ambassador.c -+++ b/drivers/atm/ambassador.c -@@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, tx_out * tx) { - PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx); - - // VC layer stats -- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); -+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); - - // free the descriptor - kfree (tx_descr); -@@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) { - dump_skb ("<<<", vc, skb); - - // VC layer stats -- atomic_inc(&atm_vcc->stats->rx); -+ atomic_inc_unchecked(&atm_vcc->stats->rx); - __net_timestamp(skb); - // end of our responsibility - atm_vcc->push (atm_vcc, skb); -@@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) { - } else { - PRINTK (KERN_INFO, "dropped over-size frame"); - // should we count this? -- atomic_inc(&atm_vcc->stats->rx_drop); -+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); - } - - } else { -@@ -1338,7 +1338,7 @@ static int amb_send (struct atm_vcc * atm_vcc, struct sk_buff * skb) { - } - - if (check_area (skb->data, skb->len)) { -- atomic_inc(&atm_vcc->stats->tx_err); -+ atomic_inc_unchecked(&atm_vcc->stats->tx_err); - return -ENOMEM; // ? - } - -diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c -index b22d71c..d6e1049 100644 ---- a/drivers/atm/atmtcp.c -+++ b/drivers/atm/atmtcp.c -@@ -207,7 +207,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) - if (vcc->pop) vcc->pop(vcc,skb); - else dev_kfree_skb(skb); - if (dev_data) return 0; -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - return -ENOLINK; - } - size = skb->len+sizeof(struct atmtcp_hdr); -@@ -215,7 +215,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) - if (!new_skb) { - if (vcc->pop) vcc->pop(vcc,skb); - else dev_kfree_skb(skb); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - return -ENOBUFS; - } - hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr)); -@@ -226,8 +226,8 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) - if (vcc->pop) vcc->pop(vcc,skb); - else dev_kfree_skb(skb); - out_vcc->push(out_vcc,new_skb); -- atomic_inc(&vcc->stats->tx); -- atomic_inc(&out_vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->tx); -+ atomic_inc_unchecked(&out_vcc->stats->rx); - return 0; - } - -@@ -301,7 +301,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) - out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci)); - read_unlock(&vcc_sklist_lock); - if (!out_vcc) { -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - goto done; - } - skb_pull(skb,sizeof(struct atmtcp_hdr)); -@@ -313,8 +313,8 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) - __net_timestamp(new_skb); - skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len); - out_vcc->push(out_vcc,new_skb); -- atomic_inc(&vcc->stats->tx); -- atomic_inc(&out_vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->tx); -+ atomic_inc_unchecked(&out_vcc->stats->rx); - done: - if (vcc->pop) vcc->pop(vcc,skb); - else dev_kfree_skb(skb); -diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c -index 2059ee4..faf51c7 100644 ---- a/drivers/atm/eni.c -+++ b/drivers/atm/eni.c -@@ -522,7 +522,7 @@ static int rx_aal0(struct atm_vcc *vcc) - DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n", - vcc->dev->number); - length = 0; -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - } - else { - length = ATM_CELL_SIZE-1; /* no HEC */ -@@ -577,7 +577,7 @@ static int rx_aal5(struct atm_vcc *vcc) - size); - } - eff = length = 0; -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - } - else { - size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2); -@@ -594,7 +594,7 @@ static int rx_aal5(struct atm_vcc *vcc) - "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n", - vcc->dev->number,vcc->vci,length,size << 2,descr); - length = eff = 0; -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - } - } - skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL; -@@ -767,7 +767,7 @@ rx_dequeued++; - vcc->push(vcc,skb); - pushed++; - } -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - wake_up(&eni_dev->rx_wait); - } -@@ -1227,7 +1227,7 @@ static void dequeue_tx(struct atm_dev *dev) - PCI_DMA_TODEVICE); - if (vcc->pop) vcc->pop(vcc,skb); - else dev_kfree_skb_irq(skb); -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - wake_up(&eni_dev->tx_wait); - dma_complete++; - } -@@ -1567,7 +1567,7 @@ tx_complete++; - /*--------------------------------- entries ---------------------------------*/ - - --static const char *media_name[] __devinitdata = { -+static const char *media_name[] __devinitconst = { - "MMF", "SMF", "MMF", "03?", /* 0- 3 */ - "UTP", "05?", "06?", "07?", /* 4- 7 */ - "TAXI","09?", "10?", "11?", /* 8-11 */ -diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c -index 86fed1b..6dc4721 100644 ---- a/drivers/atm/firestream.c -+++ b/drivers/atm/firestream.c -@@ -749,7 +749,7 @@ static void process_txdone_queue (struct fs_dev *dev, struct queue *q) - } - } - -- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); -+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); - - fs_dprintk (FS_DEBUG_TXMEM, "i"); - fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb); -@@ -816,7 +816,7 @@ static void process_incoming (struct fs_dev *dev, struct queue *q) - #endif - skb_put (skb, qe->p1 & 0xffff); - ATM_SKB(skb)->vcc = atm_vcc; -- atomic_inc(&atm_vcc->stats->rx); -+ atomic_inc_unchecked(&atm_vcc->stats->rx); - __net_timestamp(skb); - fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb); - atm_vcc->push (atm_vcc, skb); -@@ -837,12 +837,12 @@ static void process_incoming (struct fs_dev *dev, struct queue *q) - kfree (pe); - } - if (atm_vcc) -- atomic_inc(&atm_vcc->stats->rx_drop); -+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); - break; - case 0x1f: /* Reassembly abort: no buffers. */ - /* Silently increment error counter. */ - if (atm_vcc) -- atomic_inc(&atm_vcc->stats->rx_drop); -+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); - break; - default: /* Hmm. Haven't written the code to handle the others yet... -- REW */ - printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", -diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c -index 361f5ae..7fc552d 100644 ---- a/drivers/atm/fore200e.c -+++ b/drivers/atm/fore200e.c -@@ -933,9 +933,9 @@ fore200e_tx_irq(struct fore200e* fore200e) - #endif - /* check error condition */ - if (*entry->status & STATUS_ERROR) -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - else -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - } - } - -@@ -1084,7 +1084,7 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp - if (skb == NULL) { - DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len); - -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - return -ENOMEM; - } - -@@ -1127,14 +1127,14 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp - - dev_kfree_skb_any(skb); - -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - return -ENOMEM; - } - - ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); - - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); - -@@ -1212,7 +1212,7 @@ fore200e_rx_irq(struct fore200e* fore200e) - DPRINTK(2, "damaged PDU on %d.%d.%d\n", - fore200e->atm_dev->number, - entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - } - } - -@@ -1657,7 +1657,7 @@ fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb) - goto retry_here; - } - -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - - fore200e->tx_sat++; - DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n", -diff --git a/drivers/atm/he.c b/drivers/atm/he.c -index b182c2f..1c6fa8a 100644 ---- a/drivers/atm/he.c -+++ b/drivers/atm/he.c -@@ -1709,7 +1709,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) - - if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { - hprintk("HBUF_ERR! (cid 0x%x)\n", cid); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - goto return_host_buffers; - } - -@@ -1736,7 +1736,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) - RBRQ_LEN_ERR(he_dev->rbrq_head) - ? "LEN_ERR" : "", - vcc->vpi, vcc->vci); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto return_host_buffers; - } - -@@ -1788,7 +1788,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) - vcc->push(vcc, skb); - spin_lock(&he_dev->global_lock); - -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - return_host_buffers: - ++pdus_assembled; -@@ -2114,7 +2114,7 @@ __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) - tpd->vcc->pop(tpd->vcc, tpd->skb); - else - dev_kfree_skb_any(tpd->skb); -- atomic_inc(&tpd->vcc->stats->tx_err); -+ atomic_inc_unchecked(&tpd->vcc->stats->tx_err); - } - pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); - return; -@@ -2526,7 +2526,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) - vcc->pop(vcc, skb); - else - dev_kfree_skb_any(skb); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - return -EINVAL; - } - -@@ -2537,7 +2537,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) - vcc->pop(vcc, skb); - else - dev_kfree_skb_any(skb); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - return -EINVAL; - } - #endif -@@ -2549,7 +2549,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) - vcc->pop(vcc, skb); - else - dev_kfree_skb_any(skb); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - spin_unlock_irqrestore(&he_dev->global_lock, flags); - return -ENOMEM; - } -@@ -2591,7 +2591,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) - vcc->pop(vcc, skb); - else - dev_kfree_skb_any(skb); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - spin_unlock_irqrestore(&he_dev->global_lock, flags); - return -ENOMEM; - } -@@ -2622,7 +2622,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) - __enqueue_tpd(he_dev, tpd, cid); - spin_unlock_irqrestore(&he_dev->global_lock, flags); - -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - - return 0; - } -diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c -index 7d01c2a..4e3ac01 100644 ---- a/drivers/atm/horizon.c -+++ b/drivers/atm/horizon.c -@@ -1034,7 +1034,7 @@ static void rx_schedule (hrz_dev * dev, int irq) { - { - struct atm_vcc * vcc = ATM_SKB(skb)->vcc; - // VC layer stats -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - __net_timestamp(skb); - // end of our responsibility - vcc->push (vcc, skb); -@@ -1186,7 +1186,7 @@ static void tx_schedule (hrz_dev * const dev, int irq) { - dev->tx_iovec = NULL; - - // VC layer stats -- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); -+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); - - // free the skb - hrz_kfree_skb (skb); -diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c -index 8974bd2..b856f85 100644 ---- a/drivers/atm/idt77252.c -+++ b/drivers/atm/idt77252.c -@@ -812,7 +812,7 @@ drain_scq(struct idt77252_dev *card, struct vc_map *vc) - else - dev_kfree_skb(skb); - -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - } - - atomic_dec(&scq->used); -@@ -1075,13 +1075,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - if ((sb = dev_alloc_skb(64)) == NULL) { - printk("%s: Can't allocate buffers for aal0.\n", - card->name); -- atomic_add(i, &vcc->stats->rx_drop); -+ atomic_add_unchecked(i, &vcc->stats->rx_drop); - break; - } - if (!atm_charge(vcc, sb->truesize)) { - RXPRINTK("%s: atm_charge() dropped aal0 packets.\n", - card->name); -- atomic_add(i - 1, &vcc->stats->rx_drop); -+ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); - dev_kfree_skb(sb); - break; - } -@@ -1098,7 +1098,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - ATM_SKB(sb)->vcc = vcc; - __net_timestamp(sb); - vcc->push(vcc, sb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - cell += ATM_CELL_PAYLOAD; - } -@@ -1135,13 +1135,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - "(CDC: %08x)\n", - card->name, len, rpp->len, readl(SAR_REG_CDC)); - recycle_rx_pool_skb(card, rpp); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - return; - } - if (stat & SAR_RSQE_CRC) { - RXPRINTK("%s: AAL5 CRC error.\n", card->name); - recycle_rx_pool_skb(card, rpp); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - return; - } - if (skb_queue_len(&rpp->queue) > 1) { -@@ -1152,7 +1152,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - RXPRINTK("%s: Can't alloc RX skb.\n", - card->name); - recycle_rx_pool_skb(card, rpp); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - return; - } - if (!atm_charge(vcc, skb->truesize)) { -@@ -1171,7 +1171,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - __net_timestamp(skb); - - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - return; - } -@@ -1193,7 +1193,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) - __net_timestamp(skb); - - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - if (skb->truesize > SAR_FB_SIZE_3) - add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); -@@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *card) - if (vcc->qos.aal != ATM_AAL0) { - RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n", - card->name, vpi, vci); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - goto drop; - } - - if ((sb = dev_alloc_skb(64)) == NULL) { - printk("%s: Can't allocate buffers for AAL0.\n", - card->name); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto drop; - } - -@@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *card) - ATM_SKB(sb)->vcc = vcc; - __net_timestamp(sb); - vcc->push(vcc, sb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - - drop: - skb_pull(queue, 64); -@@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) - - if (vc == NULL) { - printk("%s: NULL connection in send().\n", card->name); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb(skb); - return -EINVAL; - } - if (!test_bit(VCF_TX, &vc->flags)) { - printk("%s: Trying to transmit on a non-tx VC.\n", card->name); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb(skb); - return -EINVAL; - } -@@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) - break; - default: - printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb(skb); - return -EINVAL; - } - - if (skb_shinfo(skb)->nr_frags != 0) { - printk("%s: No scatter-gather yet.\n", card->name); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb(skb); - return -EINVAL; - } -@@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) - - err = queue_skb(card, vc, skb, oam); - if (err) { -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb(skb); - return err; - } -@@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags) - skb = dev_alloc_skb(64); - if (!skb) { - printk("%s: Out of memory in send_oam().\n", card->name); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - return -ENOMEM; - } - atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); -diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c -index 96cce6d..62c3ec5 100644 ---- a/drivers/atm/iphase.c -+++ b/drivers/atm/iphase.c -@@ -1145,7 +1145,7 @@ static int rx_pkt(struct atm_dev *dev) - status = (u_short) (buf_desc_ptr->desc_mode); - if (status & (RX_CER | RX_PTE | RX_OFL)) - { -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - IF_ERR(printk("IA: bad packet, dropping it");) - if (status & RX_CER) { - IF_ERR(printk(" cause: packet CRC error\n");) -@@ -1168,7 +1168,7 @@ static int rx_pkt(struct atm_dev *dev) - len = dma_addr - buf_addr; - if (len > iadev->rx_buf_sz) { - printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto out_free_desc; - } - -@@ -1318,7 +1318,7 @@ static void rx_dle_intr(struct atm_dev *dev) - ia_vcc = INPH_IA_VCC(vcc); - if (ia_vcc == NULL) - { -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - atm_return(vcc, skb->truesize); - dev_kfree_skb_any(skb); - goto INCR_DLE; -@@ -1330,7 +1330,7 @@ static void rx_dle_intr(struct atm_dev *dev) - if ((length > iadev->rx_buf_sz) || (length > - (skb->len - sizeof(struct cpcs_trailer)))) - { -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)", - length, skb->len);) - atm_return(vcc, skb->truesize); -@@ -1346,7 +1346,7 @@ static void rx_dle_intr(struct atm_dev *dev) - - IF_RX(printk("rx_dle_intr: skb push");) - vcc->push(vcc,skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - iadev->rx_pkt_cnt++; - } - INCR_DLE: -@@ -2826,15 +2826,15 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) - { - struct k_sonet_stats *stats; - stats = &PRIV(_ia_dev[board])->sonet_stats; -- printk("section_bip: %d\n", atomic_read(&stats->section_bip)); -- printk("line_bip : %d\n", atomic_read(&stats->line_bip)); -- printk("path_bip : %d\n", atomic_read(&stats->path_bip)); -- printk("line_febe : %d\n", atomic_read(&stats->line_febe)); -- printk("path_febe : %d\n", atomic_read(&stats->path_febe)); -- printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs)); -- printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs)); -- printk("tx_cells : %d\n", atomic_read(&stats->tx_cells)); -- printk("rx_cells : %d\n", atomic_read(&stats->rx_cells)); -+ printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip)); -+ printk("line_bip : %d\n", atomic_read_unchecked(&stats->line_bip)); -+ printk("path_bip : %d\n", atomic_read_unchecked(&stats->path_bip)); -+ printk("line_febe : %d\n", atomic_read_unchecked(&stats->line_febe)); -+ printk("path_febe : %d\n", atomic_read_unchecked(&stats->path_febe)); -+ printk("corr_hcs : %d\n", atomic_read_unchecked(&stats->corr_hcs)); -+ printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs)); -+ printk("tx_cells : %d\n", atomic_read_unchecked(&stats->tx_cells)); -+ printk("rx_cells : %d\n", atomic_read_unchecked(&stats->rx_cells)); - } - ia_cmds.status = 0; - break; -@@ -2939,7 +2939,7 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) { - if ((desc == 0) || (desc > iadev->num_tx_desc)) - { - IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - if (vcc->pop) - vcc->pop(vcc, skb); - else -@@ -3044,14 +3044,14 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) { - ATM_DESC(skb) = vcc->vci; - skb_queue_tail(&iadev->tx_dma_q, skb); - -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - iadev->tx_pkt_cnt++; - /* Increment transaction counter */ - writel(2, iadev->dma+IPHASE5575_TX_COUNTER); - - #if 0 - /* add flow control logic */ -- if (atomic_read(&vcc->stats->tx) % 20 == 0) { -+ if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) { - if (iavcc->vc_desc_cnt > 10) { - vcc->tx_quota = vcc->tx_quota * 3 / 4; - printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota ); -diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c -index 68c7588..7036683 100644 ---- a/drivers/atm/lanai.c -+++ b/drivers/atm/lanai.c -@@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct lanai_dev *lanai, - vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0); - lanai_endtx(lanai, lvcc); - lanai_free_skb(lvcc->tx.atmvcc, skb); -- atomic_inc(&lvcc->tx.atmvcc->stats->tx); -+ atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx); - } - - /* Try to fill the buffer - don't call unless there is backlog */ -@@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc *lvcc, int endptr) - ATM_SKB(skb)->vcc = lvcc->rx.atmvcc; - __net_timestamp(skb); - lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb); -- atomic_inc(&lvcc->rx.atmvcc->stats->rx); -+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx); - out: - lvcc->rx.buf.ptr = end; - cardvcc_write(lvcc, endptr, vcc_rxreadptr); -@@ -1667,7 +1667,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) - DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 " - "vcc %d\n", lanai->number, (unsigned int) s, vci); - lanai->stats.service_rxnotaal5++; -- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); -+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); - return 0; - } - if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) { -@@ -1679,7 +1679,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) - int bytes; - read_unlock(&vcc_sklist_lock); - DPRINTK("got trashed rx pdu on vci %d\n", vci); -- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); -+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); - lvcc->stats.x.aal5.service_trash++; - bytes = (SERVICE_GET_END(s) * 16) - - (((unsigned long) lvcc->rx.buf.ptr) - -@@ -1691,7 +1691,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) - } - if (s & SERVICE_STREAM) { - read_unlock(&vcc_sklist_lock); -- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); -+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); - lvcc->stats.x.aal5.service_stream++; - printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream " - "PDU on VCI %d!\n", lanai->number, vci); -@@ -1699,7 +1699,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) - return 0; - } - DPRINTK("got rx crc error on vci %d\n", vci); -- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); -+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); - lvcc->stats.x.aal5.service_rxcrc++; - lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4]; - cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr); -diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c -index 1c70c45..300718d 100644 ---- a/drivers/atm/nicstar.c -+++ b/drivers/atm/nicstar.c -@@ -1654,7 +1654,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) - if ((vc = (vc_map *) vcc->dev_data) == NULL) { - printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", - card->index); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb_any(skb); - return -EINVAL; - } -@@ -1662,7 +1662,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) - if (!vc->tx) { - printk("nicstar%d: Trying to transmit on a non-tx VC.\n", - card->index); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb_any(skb); - return -EINVAL; - } -@@ -1670,14 +1670,14 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) - if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { - printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", - card->index); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb_any(skb); - return -EINVAL; - } - - if (skb_shinfo(skb)->nr_frags != 0) { - printk("nicstar%d: No scatter-gather yet.\n", card->index); -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb_any(skb); - return -EINVAL; - } -@@ -1725,11 +1725,11 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) - } - - if (push_scqe(card, vc, scq, &scqe, skb) != 0) { -- atomic_inc(&vcc->stats->tx_err); -+ atomic_inc_unchecked(&vcc->stats->tx_err); - dev_kfree_skb_any(skb); - return -EIO; - } -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - - return 0; - } -@@ -2046,14 +2046,14 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - printk - ("nicstar%d: Can't allocate buffers for aal0.\n", - card->index); -- atomic_add(i, &vcc->stats->rx_drop); -+ atomic_add_unchecked(i, &vcc->stats->rx_drop); - break; - } - if (!atm_charge(vcc, sb->truesize)) { - RXPRINTK - ("nicstar%d: atm_charge() dropped aal0 packets.\n", - card->index); -- atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ -+ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ - dev_kfree_skb_any(sb); - break; - } -@@ -2068,7 +2068,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ATM_SKB(sb)->vcc = vcc; - __net_timestamp(sb); - vcc->push(vcc, sb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - cell += ATM_CELL_PAYLOAD; - } - -@@ -2085,7 +2085,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - if (iovb == NULL) { - printk("nicstar%d: Out of iovec buffers.\n", - card->index); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - recycle_rx_buf(card, skb); - return; - } -@@ -2109,7 +2109,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - small or large buffer itself. */ - } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { - printk("nicstar%d: received too big AAL5 SDU.\n", card->index); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, - NS_MAX_IOVECS); - NS_PRV_IOVCNT(iovb) = 0; -@@ -2129,7 +2129,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ("nicstar%d: Expected a small buffer, and this is not one.\n", - card->index); - which_list(card, skb); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - recycle_rx_buf(card, skb); - vc->rx_iov = NULL; - recycle_iov_buf(card, iovb); -@@ -2142,7 +2142,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ("nicstar%d: Expected a large buffer, and this is not one.\n", - card->index); - which_list(card, skb); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, - NS_PRV_IOVCNT(iovb)); - vc->rx_iov = NULL; -@@ -2165,7 +2165,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - printk(" - PDU size mismatch.\n"); - else - printk(".\n"); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, - NS_PRV_IOVCNT(iovb)); - vc->rx_iov = NULL; -@@ -2179,7 +2179,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - /* skb points to a small buffer */ - if (!atm_charge(vcc, skb->truesize)) { - push_rxbufs(card, skb); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - } else { - skb_put(skb, len); - dequeue_sm_buf(card, skb); -@@ -2189,7 +2189,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ATM_SKB(skb)->vcc = vcc; - __net_timestamp(skb); - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ - struct sk_buff *sb; -@@ -2200,7 +2200,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - if (len <= NS_SMBUFSIZE) { - if (!atm_charge(vcc, sb->truesize)) { - push_rxbufs(card, sb); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - } else { - skb_put(sb, len); - dequeue_sm_buf(card, sb); -@@ -2210,7 +2210,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ATM_SKB(sb)->vcc = vcc; - __net_timestamp(sb); - vcc->push(vcc, sb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - - push_rxbufs(card, skb); -@@ -2219,7 +2219,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - - if (!atm_charge(vcc, skb->truesize)) { - push_rxbufs(card, skb); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - } else { - dequeue_lg_buf(card, skb); - #ifdef NS_USE_DESTRUCTORS -@@ -2232,7 +2232,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - ATM_SKB(skb)->vcc = vcc; - __net_timestamp(skb); - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - - push_rxbufs(card, sb); -@@ -2253,7 +2253,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - printk - ("nicstar%d: Out of huge buffers.\n", - card->index); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - recycle_iovec_rx_bufs(card, - (struct iovec *) - iovb->data, -@@ -2304,7 +2304,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - card->hbpool.count++; - } else - dev_kfree_skb_any(hb); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - } else { - /* Copy the small buffer to the huge buffer */ - sb = (struct sk_buff *)iov->iov_base; -@@ -2341,7 +2341,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) - #endif /* NS_USE_DESTRUCTORS */ - __net_timestamp(hb); - vcc->push(vcc, hb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - } - -diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c -index 1853a45..cf2426d 100644 ---- a/drivers/atm/solos-pci.c -+++ b/drivers/atm/solos-pci.c -@@ -714,7 +714,7 @@ void solos_bh(unsigned long card_arg) - } - atm_charge(vcc, skb->truesize); - vcc->push(vcc, skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - break; - - case PKT_STATUS: -@@ -1010,7 +1010,7 @@ static uint32_t fpga_tx(struct solos_card *card) - vcc = SKB_CB(oldskb)->vcc; - - if (vcc) { -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - solos_pop(vcc, oldskb); - } else - dev_kfree_skb_irq(oldskb); -diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c -index 0215934..ce9f5b1 100644 ---- a/drivers/atm/suni.c -+++ b/drivers/atm/suni.c -@@ -49,8 +49,8 @@ static DEFINE_SPINLOCK(sunis_lock); - - - #define ADD_LIMITED(s,v) \ -- atomic_add((v),&stats->s); \ -- if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX); -+ atomic_add_unchecked((v),&stats->s); \ -+ if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX); - - - static void suni_hz(unsigned long from_timer) -diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c -index 5120a96..e2572bd 100644 ---- a/drivers/atm/uPD98402.c -+++ b/drivers/atm/uPD98402.c -@@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int ze - struct sonet_stats tmp; - int error = 0; - -- atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); -+ atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); - sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp); - if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp)); - if (zero && !error) { -@@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg) - - - #define ADD_LIMITED(s,v) \ -- { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \ -- if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \ -- atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); } -+ { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \ -+ if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \ -+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); } - - - static void stat_event(struct atm_dev *dev) -@@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev *dev) - if (reason & uPD98402_INT_PFM) stat_event(dev); - if (reason & uPD98402_INT_PCO) { - (void) GET(PCOCR); /* clear interrupt cause */ -- atomic_add(GET(HECCT), -+ atomic_add_unchecked(GET(HECCT), - &PRIV(dev)->sonet_stats.uncorr_hcs); - } - if ((reason & uPD98402_INT_RFO) && -@@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev *dev) - PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO | - uPD98402_INT_LOS),PIMR); /* enable them */ - (void) fetch_stats(dev,NULL,1); /* clear kernel counters */ -- atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1); -- atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1); -- atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1); -+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1); -+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1); -+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1); - return 0; - } - -diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c -index abe4e20..83c4727 100644 ---- a/drivers/atm/zatm.c -+++ b/drivers/atm/zatm.c -@@ -459,7 +459,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]); - } - if (!size) { - dev_kfree_skb_irq(skb); -- if (vcc) atomic_inc(&vcc->stats->rx_err); -+ if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err); - continue; - } - if (!atm_charge(vcc,skb->truesize)) { -@@ -469,7 +469,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]); - skb->len = size; - ATM_SKB(skb)->vcc = vcc; - vcc->push(vcc,skb); -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - } - zout(pos & 0xffff,MTA(mbx)); - #if 0 /* probably a stupid idea */ -@@ -733,7 +733,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP | - skb_queue_head(&zatm_vcc->backlog,skb); - break; - } -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - wake_up(&zatm_vcc->tx_wait); - } - -diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c -index deb4a45..211eff2 100644 ---- a/drivers/base/devtmpfs.c -+++ b/drivers/base/devtmpfs.c -@@ -347,7 +347,7 @@ int devtmpfs_mount(const char *mntdir) - if (!thread) - return 0; - -- err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL); -+ err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)mntdir, (char __force_user *)"devtmpfs", MS_SILENT, NULL); - if (err) - printk(KERN_INFO "devtmpfs: error mounting %i\n", err); - else -diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c -index cbb463b..babe2cf 100644 ---- a/drivers/base/power/wakeup.c -+++ b/drivers/base/power/wakeup.c -@@ -29,14 +29,14 @@ bool events_check_enabled __read_mostly; - * They need to be modified together atomically, so it's better to use one - * atomic variable to hold them both. - */ --static atomic_t combined_event_count = ATOMIC_INIT(0); -+static atomic_unchecked_t combined_event_count = ATOMIC_INIT(0); - - #define IN_PROGRESS_BITS (sizeof(int) * 4) - #define MAX_IN_PROGRESS ((1 << IN_PROGRESS_BITS) - 1) - - static void split_counters(unsigned int *cnt, unsigned int *inpr) - { -- unsigned int comb = atomic_read(&combined_event_count); -+ unsigned int comb = atomic_read_unchecked(&combined_event_count); - - *cnt = (comb >> IN_PROGRESS_BITS); - *inpr = comb & MAX_IN_PROGRESS; -@@ -385,7 +385,7 @@ static void wakeup_source_activate(struct wakeup_source *ws) - ws->start_prevent_time = ws->last_time; - - /* Increment the counter of events in progress. */ -- cec = atomic_inc_return(&combined_event_count); -+ cec = atomic_inc_return_unchecked(&combined_event_count); - - trace_wakeup_source_activate(ws->name, cec); - } -@@ -511,7 +511,7 @@ static void wakeup_source_deactivate(struct wakeup_source *ws) - * Increment the counter of registered wakeup events and decrement the - * couter of wakeup events in progress simultaneously. - */ -- cec = atomic_add_return(MAX_IN_PROGRESS, &combined_event_count); -+ cec = atomic_add_return_unchecked(MAX_IN_PROGRESS, &combined_event_count); - trace_wakeup_source_deactivate(ws->name, cec); - - split_counters(&cnt, &inpr); -diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c -index b0f553b..77b928b 100644 ---- a/drivers/block/cciss.c -+++ b/drivers/block/cciss.c -@@ -1198,6 +1198,8 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, - int err; - u32 cp; - -+ memset(&arg64, 0, sizeof(arg64)); -+ - err = 0; - err |= - copy_from_user(&arg64.LUN_info, &arg32->LUN_info, -@@ -3007,7 +3009,7 @@ static void start_io(ctlr_info_t *h) - while (!list_empty(&h->reqQ)) { - c = list_entry(h->reqQ.next, CommandList_struct, list); - /* can't do anything if fifo is full */ -- if ((h->access.fifo_full(h))) { -+ if ((h->access->fifo_full(h))) { - dev_warn(&h->pdev->dev, "fifo full\n"); - break; - } -@@ -3017,7 +3019,7 @@ static void start_io(ctlr_info_t *h) - h->Qdepth--; - - /* Tell the controller execute command */ -- h->access.submit_command(h, c); -+ h->access->submit_command(h, c); - - /* Put job onto the completed Q */ - addQ(&h->cmpQ, c); -@@ -3443,17 +3445,17 @@ startio: - - static inline unsigned long get_next_completion(ctlr_info_t *h) - { -- return h->access.command_completed(h); -+ return h->access->command_completed(h); - } - - static inline int interrupt_pending(ctlr_info_t *h) - { -- return h->access.intr_pending(h); -+ return h->access->intr_pending(h); - } - - static inline long interrupt_not_for_us(ctlr_info_t *h) - { -- return ((h->access.intr_pending(h) == 0) || -+ return ((h->access->intr_pending(h) == 0) || - (h->interrupts_enabled == 0)); - } - -@@ -3486,7 +3488,7 @@ static inline u32 next_command(ctlr_info_t *h) - u32 a; - - if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) -- return h->access.command_completed(h); -+ return h->access->command_completed(h); - - if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { - a = *(h->reply_pool_head); /* Next cmd in ring buffer */ -@@ -4044,7 +4046,7 @@ static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) - trans_support & CFGTBL_Trans_use_short_tags); - - /* Change the access methods to the performant access methods */ -- h->access = SA5_performant_access; -+ h->access = &SA5_performant_access; - h->transMethod = CFGTBL_Trans_Performant; - - return; -@@ -4316,7 +4318,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *h) - if (prod_index < 0) - return -ENODEV; - h->product_name = products[prod_index].product_name; -- h->access = *(products[prod_index].access); -+ h->access = products[prod_index].access; - - if (cciss_board_disabled(h)) { - dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); -@@ -5041,7 +5043,7 @@ reinit_after_soft_reset: - } - - /* make sure the board interrupts are off */ -- h->access.set_intr_mask(h, CCISS_INTR_OFF); -+ h->access->set_intr_mask(h, CCISS_INTR_OFF); - rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx); - if (rc) - goto clean2; -@@ -5093,7 +5095,7 @@ reinit_after_soft_reset: - * fake ones to scoop up any residual completions. - */ - spin_lock_irqsave(&h->lock, flags); -- h->access.set_intr_mask(h, CCISS_INTR_OFF); -+ h->access->set_intr_mask(h, CCISS_INTR_OFF); - spin_unlock_irqrestore(&h->lock, flags); - free_irq(h->intr[h->intr_mode], h); - rc = cciss_request_irq(h, cciss_msix_discard_completions, -@@ -5113,9 +5115,9 @@ reinit_after_soft_reset: - dev_info(&h->pdev->dev, "Board READY.\n"); - dev_info(&h->pdev->dev, - "Waiting for stale completions to drain.\n"); -- h->access.set_intr_mask(h, CCISS_INTR_ON); -+ h->access->set_intr_mask(h, CCISS_INTR_ON); - msleep(10000); -- h->access.set_intr_mask(h, CCISS_INTR_OFF); -+ h->access->set_intr_mask(h, CCISS_INTR_OFF); - - rc = controller_reset_failed(h->cfgtable); - if (rc) -@@ -5138,7 +5140,7 @@ reinit_after_soft_reset: - cciss_scsi_setup(h); - - /* Turn the interrupts on so we can service requests */ -- h->access.set_intr_mask(h, CCISS_INTR_ON); -+ h->access->set_intr_mask(h, CCISS_INTR_ON); - - /* Get the firmware version */ - inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); -@@ -5211,7 +5213,7 @@ static void cciss_shutdown(struct pci_dev *pdev) - kfree(flush_buf); - if (return_code != IO_OK) - dev_warn(&h->pdev->dev, "Error flushing cache\n"); -- h->access.set_intr_mask(h, CCISS_INTR_OFF); -+ h->access->set_intr_mask(h, CCISS_INTR_OFF); - free_irq(h->intr[h->intr_mode], h); - } - -diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h -index 7fda30e..eb5dfe0 100644 ---- a/drivers/block/cciss.h -+++ b/drivers/block/cciss.h -@@ -101,7 +101,7 @@ struct ctlr_info - /* information about each logical volume */ - drive_info_struct *drv[CISS_MAX_LUN]; - -- struct access_method access; -+ struct access_method *access; - - /* queue and queue Info */ - struct list_head reqQ; -diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c -index 9125bbe..eede5c8 100644 ---- a/drivers/block/cpqarray.c -+++ b/drivers/block/cpqarray.c -@@ -404,7 +404,7 @@ static int __devinit cpqarray_register_ctlr( int i, struct pci_dev *pdev) - if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) { - goto Enomem4; - } -- hba[i]->access.set_intr_mask(hba[i], 0); -+ hba[i]->access->set_intr_mask(hba[i], 0); - if (request_irq(hba[i]->intr, do_ida_intr, - IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i])) - { -@@ -459,7 +459,7 @@ static int __devinit cpqarray_register_ctlr( int i, struct pci_dev *pdev) - add_timer(&hba[i]->timer); - - /* Enable IRQ now that spinlock and rate limit timer are set up */ -- hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY); -+ hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY); - - for(j=0; jproduct_name = products[i].product_name; -- c->access = *(products[i].access); -+ c->access = products[i].access; - break; - } - } -@@ -792,7 +792,7 @@ static int __devinit cpqarray_eisa_detect(void) - hba[ctlr]->intr = intr; - sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr); - hba[ctlr]->product_name = products[j].product_name; -- hba[ctlr]->access = *(products[j].access); -+ hba[ctlr]->access = products[j].access; - hba[ctlr]->ctlr = ctlr; - hba[ctlr]->board_id = board_id; - hba[ctlr]->pci_dev = NULL; /* not PCI */ -@@ -980,7 +980,7 @@ static void start_io(ctlr_info_t *h) - - while((c = h->reqQ) != NULL) { - /* Can't do anything if we're busy */ -- if (h->access.fifo_full(h) == 0) -+ if (h->access->fifo_full(h) == 0) - return; - - /* Get the first entry from the request Q */ -@@ -988,7 +988,7 @@ static void start_io(ctlr_info_t *h) - h->Qdepth--; - - /* Tell the controller to do our bidding */ -- h->access.submit_command(h, c); -+ h->access->submit_command(h, c); - - /* Get onto the completion Q */ - addQ(&h->cmpQ, c); -@@ -1050,7 +1050,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id) - unsigned long flags; - __u32 a,a1; - -- istat = h->access.intr_pending(h); -+ istat = h->access->intr_pending(h); - /* Is this interrupt for us? */ - if (istat == 0) - return IRQ_NONE; -@@ -1061,7 +1061,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id) - */ - spin_lock_irqsave(IDA_LOCK(h->ctlr), flags); - if (istat & FIFO_NOT_EMPTY) { -- while((a = h->access.command_completed(h))) { -+ while((a = h->access->command_completed(h))) { - a1 = a; a &= ~3; - if ((c = h->cmpQ) == NULL) - { -@@ -1449,11 +1449,11 @@ static int sendcmd( - /* - * Disable interrupt - */ -- info_p->access.set_intr_mask(info_p, 0); -+ info_p->access->set_intr_mask(info_p, 0); - /* Make sure there is room in the command FIFO */ - /* Actually it should be completely empty at this time. */ - for (i = 200000; i > 0; i--) { -- temp = info_p->access.fifo_full(info_p); -+ temp = info_p->access->fifo_full(info_p); - if (temp != 0) { - break; - } -@@ -1466,7 +1466,7 @@ DBG( - /* - * Send the cmd - */ -- info_p->access.submit_command(info_p, c); -+ info_p->access->submit_command(info_p, c); - complete = pollcomplete(ctlr); - - pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, -@@ -1549,9 +1549,9 @@ static int revalidate_allvol(ctlr_info_t *host) - * we check the new geometry. Then turn interrupts back on when - * we're done. - */ -- host->access.set_intr_mask(host, 0); -+ host->access->set_intr_mask(host, 0); - getgeometry(ctlr); -- host->access.set_intr_mask(host, FIFO_NOT_EMPTY); -+ host->access->set_intr_mask(host, FIFO_NOT_EMPTY); - - for(i=0; i 0; i--) { -- done = hba[ctlr]->access.command_completed(hba[ctlr]); -+ done = hba[ctlr]->access->command_completed(hba[ctlr]); - if (done == 0) { - udelay(10); /* a short fixed delay */ - } else -diff --git a/drivers/block/cpqarray.h b/drivers/block/cpqarray.h -index be73e9d..7fbf140 100644 ---- a/drivers/block/cpqarray.h -+++ b/drivers/block/cpqarray.h -@@ -99,7 +99,7 @@ struct ctlr_info { - drv_info_t drv[NWD]; - struct proc_dir_entry *proc; - -- struct access_method access; -+ struct access_method *access; - - cmdlist_t *reqQ; - cmdlist_t *cmpQ; -diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h -index b953cc7..e3dc580 100644 ---- a/drivers/block/drbd/drbd_int.h -+++ b/drivers/block/drbd/drbd_int.h -@@ -735,7 +735,7 @@ struct drbd_request; - struct drbd_epoch { - struct list_head list; - unsigned int barrier_nr; -- atomic_t epoch_size; /* increased on every request added. */ -+ atomic_unchecked_t epoch_size; /* increased on every request added. */ - atomic_t active; /* increased on every req. added, and dec on every finished. */ - unsigned long flags; - }; -@@ -1116,7 +1116,7 @@ struct drbd_conf { - void *int_dig_in; - void *int_dig_vv; - wait_queue_head_t seq_wait; -- atomic_t packet_seq; -+ atomic_unchecked_t packet_seq; - unsigned int peer_seq; - spinlock_t peer_seq_lock; - unsigned int minor; -@@ -1658,30 +1658,30 @@ static inline int drbd_setsockopt(struct socket *sock, int level, int optname, - - static inline void drbd_tcp_cork(struct socket *sock) - { -- int __user val = 1; -+ int val = 1; - (void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK, -- (char __user *)&val, sizeof(val)); -+ (char __force_user *)&val, sizeof(val)); - } - - static inline void drbd_tcp_uncork(struct socket *sock) - { -- int __user val = 0; -+ int val = 0; - (void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK, -- (char __user *)&val, sizeof(val)); -+ (char __force_user *)&val, sizeof(val)); - } - - static inline void drbd_tcp_nodelay(struct socket *sock) - { -- int __user val = 1; -+ int val = 1; - (void) drbd_setsockopt(sock, SOL_TCP, TCP_NODELAY, -- (char __user *)&val, sizeof(val)); -+ (char __force_user *)&val, sizeof(val)); - } - - static inline void drbd_tcp_quickack(struct socket *sock) - { -- int __user val = 2; -+ int val = 2; - (void) drbd_setsockopt(sock, SOL_TCP, TCP_QUICKACK, -- (char __user *)&val, sizeof(val)); -+ (char __force_user *)&val, sizeof(val)); - } - - void drbd_bump_write_ordering(struct drbd_conf *mdev, enum write_ordering_e wo); -diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c -index f93a032..71c87bf 100644 ---- a/drivers/block/drbd/drbd_main.c -+++ b/drivers/block/drbd/drbd_main.c -@@ -2567,7 +2567,7 @@ static int _drbd_send_ack(struct drbd_conf *mdev, enum drbd_packets cmd, - p.sector = sector; - p.block_id = block_id; - p.blksize = blksize; -- p.seq_num = cpu_to_be32(atomic_add_return(1, &mdev->packet_seq)); -+ p.seq_num = cpu_to_be32(atomic_add_return_unchecked(1, &mdev->packet_seq)); - - if (!mdev->meta.socket || mdev->state.conn < C_CONNECTED) - return false; -@@ -2865,7 +2865,7 @@ int drbd_send_dblock(struct drbd_conf *mdev, struct drbd_request *req) - - p.sector = cpu_to_be64(req->sector); - p.block_id = (unsigned long)req; -- p.seq_num = cpu_to_be32(atomic_add_return(1, &mdev->packet_seq)); -+ p.seq_num = cpu_to_be32(atomic_add_return_unchecked(1, &mdev->packet_seq)); - - dp_flags = bio_flags_to_wire(mdev, req->master_bio->bi_rw); - -@@ -3150,7 +3150,7 @@ void drbd_init_set_defaults(struct drbd_conf *mdev) - atomic_set(&mdev->unacked_cnt, 0); - atomic_set(&mdev->local_cnt, 0); - atomic_set(&mdev->net_cnt, 0); -- atomic_set(&mdev->packet_seq, 0); -+ atomic_set_unchecked(&mdev->packet_seq, 0); - atomic_set(&mdev->pp_in_use, 0); - atomic_set(&mdev->pp_in_use_by_net, 0); - atomic_set(&mdev->rs_sect_in, 0); -@@ -3232,8 +3232,8 @@ void drbd_mdev_cleanup(struct drbd_conf *mdev) - mdev->receiver.t_state); - - /* no need to lock it, I'm the only thread alive */ -- if (atomic_read(&mdev->current_epoch->epoch_size) != 0) -- dev_err(DEV, "epoch_size:%d\n", atomic_read(&mdev->current_epoch->epoch_size)); -+ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size) != 0) -+ dev_err(DEV, "epoch_size:%d\n", atomic_read_unchecked(&mdev->current_epoch->epoch_size)); - mdev->al_writ_cnt = - mdev->bm_writ_cnt = - mdev->read_cnt = -diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c -index edb490a..ecd69da 100644 ---- a/drivers/block/drbd/drbd_nl.c -+++ b/drivers/block/drbd/drbd_nl.c -@@ -2407,7 +2407,7 @@ static void drbd_connector_callback(struct cn_msg *req, struct netlink_skb_parms - module_put(THIS_MODULE); - } - --static atomic_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */ -+static atomic_unchecked_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */ - - static unsigned short * - __tl_add_blob(unsigned short *tl, enum drbd_tags tag, const void *data, -@@ -2478,7 +2478,7 @@ void drbd_bcast_state(struct drbd_conf *mdev, union drbd_state state) - cn_reply->id.idx = CN_IDX_DRBD; - cn_reply->id.val = CN_VAL_DRBD; - -- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); -+ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); - cn_reply->ack = 0; /* not used here. */ - cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + - (int)((char *)tl - (char *)reply->tag_list); -@@ -2510,7 +2510,7 @@ void drbd_bcast_ev_helper(struct drbd_conf *mdev, char *helper_name) - cn_reply->id.idx = CN_IDX_DRBD; - cn_reply->id.val = CN_VAL_DRBD; - -- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); -+ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); - cn_reply->ack = 0; /* not used here. */ - cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + - (int)((char *)tl - (char *)reply->tag_list); -@@ -2588,7 +2588,7 @@ void drbd_bcast_ee(struct drbd_conf *mdev, - cn_reply->id.idx = CN_IDX_DRBD; - cn_reply->id.val = CN_VAL_DRBD; - -- cn_reply->seq = atomic_add_return(1,&drbd_nl_seq); -+ cn_reply->seq = atomic_add_return_unchecked(1,&drbd_nl_seq); - cn_reply->ack = 0; // not used here. - cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + - (int)((char*)tl - (char*)reply->tag_list); -@@ -2627,7 +2627,7 @@ void drbd_bcast_sync_progress(struct drbd_conf *mdev) - cn_reply->id.idx = CN_IDX_DRBD; - cn_reply->id.val = CN_VAL_DRBD; - -- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); -+ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); - cn_reply->ack = 0; /* not used here. */ - cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + - (int)((char *)tl - (char *)reply->tag_list); -diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c -index c74ca2d..860c819 100644 ---- a/drivers/block/drbd/drbd_receiver.c -+++ b/drivers/block/drbd/drbd_receiver.c -@@ -898,7 +898,7 @@ retry: - sock->sk->sk_sndtimeo = mdev->net_conf->timeout*HZ/10; - sock->sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT; - -- atomic_set(&mdev->packet_seq, 0); -+ atomic_set_unchecked(&mdev->packet_seq, 0); - mdev->peer_seq = 0; - - if (drbd_send_protocol(mdev) == -1) -@@ -999,7 +999,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_conf *mdev, - do { - next_epoch = NULL; - -- epoch_size = atomic_read(&epoch->epoch_size); -+ epoch_size = atomic_read_unchecked(&epoch->epoch_size); - - switch (ev & ~EV_CLEANUP) { - case EV_PUT: -@@ -1035,7 +1035,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_conf *mdev, - rv = FE_DESTROYED; - } else { - epoch->flags = 0; -- atomic_set(&epoch->epoch_size, 0); -+ atomic_set_unchecked(&epoch->epoch_size, 0); - /* atomic_set(&epoch->active, 0); is already zero */ - if (rv == FE_STILL_LIVE) - rv = FE_RECYCLED; -@@ -1210,14 +1210,14 @@ static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsign - drbd_wait_ee_list_empty(mdev, &mdev->active_ee); - drbd_flush(mdev); - -- if (atomic_read(&mdev->current_epoch->epoch_size)) { -+ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) { - epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO); - if (epoch) - break; - } - - epoch = mdev->current_epoch; -- wait_event(mdev->ee_wait, atomic_read(&epoch->epoch_size) == 0); -+ wait_event(mdev->ee_wait, atomic_read_unchecked(&epoch->epoch_size) == 0); - - D_ASSERT(atomic_read(&epoch->active) == 0); - D_ASSERT(epoch->flags == 0); -@@ -1229,11 +1229,11 @@ static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsign - } - - epoch->flags = 0; -- atomic_set(&epoch->epoch_size, 0); -+ atomic_set_unchecked(&epoch->epoch_size, 0); - atomic_set(&epoch->active, 0); - - spin_lock(&mdev->epoch_lock); -- if (atomic_read(&mdev->current_epoch->epoch_size)) { -+ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) { - list_add(&epoch->list, &mdev->current_epoch->list); - mdev->current_epoch = epoch; - mdev->epochs++; -@@ -1702,7 +1702,7 @@ static int receive_Data(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned - spin_unlock(&mdev->peer_seq_lock); - - drbd_send_ack_dp(mdev, P_NEG_ACK, p, data_size); -- atomic_inc(&mdev->current_epoch->epoch_size); -+ atomic_inc_unchecked(&mdev->current_epoch->epoch_size); - return drbd_drain_block(mdev, data_size); - } - -@@ -1732,7 +1732,7 @@ static int receive_Data(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned - - spin_lock(&mdev->epoch_lock); - e->epoch = mdev->current_epoch; -- atomic_inc(&e->epoch->epoch_size); -+ atomic_inc_unchecked(&e->epoch->epoch_size); - atomic_inc(&e->epoch->active); - spin_unlock(&mdev->epoch_lock); - -@@ -3954,7 +3954,7 @@ static void drbd_disconnect(struct drbd_conf *mdev) - D_ASSERT(list_empty(&mdev->done_ee)); - - /* ok, no more ee's on the fly, it is safe to reset the epoch_size */ -- atomic_set(&mdev->current_epoch->epoch_size, 0); -+ atomic_set_unchecked(&mdev->current_epoch->epoch_size, 0); - D_ASSERT(list_empty(&mdev->current_epoch->list)); - } - -diff --git a/drivers/block/loop.c b/drivers/block/loop.c -index 3bba655..6151b66 100644 ---- a/drivers/block/loop.c -+++ b/drivers/block/loop.c -@@ -226,7 +226,7 @@ static int __do_lo_send_write(struct file *file, - mm_segment_t old_fs = get_fs(); - - set_fs(get_ds()); -- bw = file->f_op->write(file, buf, len, &pos); -+ bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos); - set_fs(old_fs); - if (likely(bw == len)) - return 0; -diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig -index ea6f632..eafb192 100644 ---- a/drivers/char/Kconfig -+++ b/drivers/char/Kconfig -@@ -8,7 +8,8 @@ source "drivers/tty/Kconfig" - - config DEVKMEM - bool "/dev/kmem virtual device support" -- default y -+ default n -+ depends on !GRKERNSEC_KMEM - help - Say Y here if you want to support the /dev/kmem device. The - /dev/kmem device is rarely used, but can be used for certain -@@ -581,6 +582,7 @@ config DEVPORT - bool - depends on !M68K - depends on ISA || PCI -+ depends on !GRKERNSEC_KMEM - default y - - source "drivers/s390/char/Kconfig" -diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c -index 2e04433..22afc64 100644 ---- a/drivers/char/agp/frontend.c -+++ b/drivers/char/agp/frontend.c -@@ -817,7 +817,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg) - if (copy_from_user(&reserve, arg, sizeof(struct agp_region))) - return -EFAULT; - -- if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment)) -+ if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv)) - return -EFAULT; - - client = agp_find_client_by_pid(reserve.pid); -diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c -index 21cb980..f15107c 100644 ---- a/drivers/char/genrtc.c -+++ b/drivers/char/genrtc.c -@@ -272,6 +272,7 @@ static int gen_rtc_ioctl(struct file *file, - switch (cmd) { - - case RTC_PLL_GET: -+ memset(&pll, 0, sizeof(pll)); - if (get_rtc_pll(&pll)) - return -EINVAL; - else -diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c -index dfd7876..c0b0885 100644 ---- a/drivers/char/hpet.c -+++ b/drivers/char/hpet.c -@@ -571,7 +571,7 @@ static inline unsigned long hpet_time_div(struct hpets *hpets, - } - - static int --hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, -+hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg, - struct hpet_info *info) - { - struct hpet_timer __iomem *timer; -diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c -index 2c29942..604c5ba 100644 ---- a/drivers/char/ipmi/ipmi_msghandler.c -+++ b/drivers/char/ipmi/ipmi_msghandler.c -@@ -420,7 +420,7 @@ struct ipmi_smi { - struct proc_dir_entry *proc_dir; - char proc_dir_name[10]; - -- atomic_t stats[IPMI_NUM_STATS]; -+ atomic_unchecked_t stats[IPMI_NUM_STATS]; - - /* - * run_to_completion duplicate of smb_info, smi_info -@@ -453,9 +453,9 @@ static DEFINE_MUTEX(smi_watchers_mutex); - - - #define ipmi_inc_stat(intf, stat) \ -- atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) -+ atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]) - #define ipmi_get_stat(intf, stat) \ -- ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) -+ ((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])) - - static int is_lan_addr(struct ipmi_addr *addr) - { -@@ -2884,7 +2884,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, - INIT_LIST_HEAD(&intf->cmd_rcvrs); - init_waitqueue_head(&intf->waitq); - for (i = 0; i < IPMI_NUM_STATS; i++) -- atomic_set(&intf->stats[i], 0); -+ atomic_set_unchecked(&intf->stats[i], 0); - - intf->proc_dir = NULL; - -diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c -index 83f85cf..279e63f 100644 ---- a/drivers/char/ipmi/ipmi_si_intf.c -+++ b/drivers/char/ipmi/ipmi_si_intf.c -@@ -275,7 +275,7 @@ struct smi_info { - unsigned char slave_addr; - - /* Counters and things for the proc filesystem. */ -- atomic_t stats[SI_NUM_STATS]; -+ atomic_unchecked_t stats[SI_NUM_STATS]; - - struct task_struct *thread; - -@@ -284,9 +284,9 @@ struct smi_info { - }; - - #define smi_inc_stat(smi, stat) \ -- atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) -+ atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat]) - #define smi_get_stat(smi, stat) \ -- ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) -+ ((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat])) - - #define SI_MAX_PARMS 4 - -@@ -3193,7 +3193,7 @@ static int try_smi_init(struct smi_info *new_smi) - atomic_set(&new_smi->req_events, 0); - new_smi->run_to_completion = 0; - for (i = 0; i < SI_NUM_STATS; i++) -- atomic_set(&new_smi->stats[i], 0); -+ atomic_set_unchecked(&new_smi->stats[i], 0); - - new_smi->interrupt_disabled = 1; - atomic_set(&new_smi->stop_operation, 0); -diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c -index 47ff7e4..0c7d340 100644 ---- a/drivers/char/mbcs.c -+++ b/drivers/char/mbcs.c -@@ -799,7 +799,7 @@ static int mbcs_remove(struct cx_dev *dev) - return 0; - } - --static const struct cx_device_id __devinitdata mbcs_id_table[] = { -+static const struct cx_device_id __devinitconst mbcs_id_table[] = { - { - .part_num = MBCS_PART_NUM, - .mfg_num = MBCS_MFG_NUM, -diff --git a/drivers/char/mem.c b/drivers/char/mem.c -index e5eedfa..fcab50ea 100644 ---- a/drivers/char/mem.c -+++ b/drivers/char/mem.c -@@ -18,6 +18,7 @@ - #include - #include - #include -+#include - #include - #include - #include -@@ -37,6 +38,10 @@ - - #define DEVPORT_MINOR 4 - -+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC) -+extern const struct file_operations grsec_fops; -+#endif -+ - static inline unsigned long size_inside_page(unsigned long start, - unsigned long size) - { -@@ -68,9 +73,13 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) - - while (cursor < to) { - if (!devmem_is_allowed(pfn)) { -+#ifdef CONFIG_GRKERNSEC_KMEM -+ gr_handle_mem_readwrite(from, to); -+#else - printk(KERN_INFO - "Program %s tried to access /dev/mem between %Lx->%Lx.\n", - current->comm, from, to); -+#endif - return 0; - } - cursor += PAGE_SIZE; -@@ -78,6 +87,11 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) - } - return 1; - } -+#elif defined(CONFIG_GRKERNSEC_KMEM) -+static inline int range_is_allowed(unsigned long pfn, unsigned long size) -+{ -+ return 0; -+} - #else - static inline int range_is_allowed(unsigned long pfn, unsigned long size) - { -@@ -120,6 +134,7 @@ static ssize_t read_mem(struct file *file, char __user *buf, - - while (count > 0) { - unsigned long remaining; -+ char *temp; - - sz = size_inside_page(p, count); - -@@ -135,7 +150,23 @@ static ssize_t read_mem(struct file *file, char __user *buf, - if (!ptr) - return -EFAULT; - -- remaining = copy_to_user(buf, ptr, sz); -+#ifdef CONFIG_PAX_USERCOPY -+ temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY); -+ if (!temp) { -+ unxlate_dev_mem_ptr(p, ptr); -+ return -ENOMEM; -+ } -+ memcpy(temp, ptr, sz); -+#else -+ temp = ptr; -+#endif -+ -+ remaining = copy_to_user(buf, temp, sz); -+ -+#ifdef CONFIG_PAX_USERCOPY -+ kfree(temp); -+#endif -+ - unxlate_dev_mem_ptr(p, ptr); - if (remaining) - return -EFAULT; -@@ -398,9 +429,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf, - size_t count, loff_t *ppos) - { - unsigned long p = *ppos; -- ssize_t low_count, read, sz; -+ ssize_t low_count, read, sz, err = 0; - char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */ -- int err = 0; - - read = 0; - if (p < (unsigned long) high_memory) { -@@ -422,6 +452,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf, - } - #endif - while (low_count > 0) { -+ char *temp; -+ - sz = size_inside_page(p, low_count); - - /* -@@ -431,7 +463,22 @@ static ssize_t read_kmem(struct file *file, char __user *buf, - */ - kbuf = xlate_dev_kmem_ptr((char *)p); - -- if (copy_to_user(buf, kbuf, sz)) -+#ifdef CONFIG_PAX_USERCOPY -+ temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY); -+ if (!temp) -+ return -ENOMEM; -+ memcpy(temp, kbuf, sz); -+#else -+ temp = kbuf; -+#endif -+ -+ err = copy_to_user(buf, temp, sz); -+ -+#ifdef CONFIG_PAX_USERCOPY -+ kfree(temp); -+#endif -+ -+ if (err) - return -EFAULT; - buf += sz; - p += sz; -@@ -833,6 +880,9 @@ static const struct memdev { - #ifdef CONFIG_CRASH_DUMP - [12] = { "oldmem", 0, &oldmem_fops, NULL }, - #endif -+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC) -+ [13] = { "grsec",S_IRUSR | S_IWUGO, &grsec_fops, NULL }, -+#endif - }; - - static int memory_open(struct inode *inode, struct file *filp) -diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c -index 9df78e2..01ba9ae 100644 ---- a/drivers/char/nvram.c -+++ b/drivers/char/nvram.c -@@ -247,7 +247,7 @@ static ssize_t nvram_read(struct file *file, char __user *buf, - - spin_unlock_irq(&rtc_lock); - -- if (copy_to_user(buf, contents, tmp - contents)) -+ if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents)) - return -EFAULT; - - *ppos = i; -diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c -index 0a484b4..f48ccd1 100644 ---- a/drivers/char/pcmcia/synclink_cs.c -+++ b/drivers/char/pcmcia/synclink_cs.c -@@ -2340,9 +2340,9 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_close(%s) entry, count=%d\n", -- __FILE__,__LINE__, info->device_name, port->count); -+ __FILE__,__LINE__, info->device_name, atomic_read(&port->count)); - -- WARN_ON(!port->count); -+ WARN_ON(!atomic_read(&port->count)); - - if (tty_port_close_start(port, tty, filp) == 0) - goto cleanup; -@@ -2360,7 +2360,7 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) - cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, -- tty->driver->name, port->count); -+ tty->driver->name, atomic_read(&port->count)); - } - - /* Wait until the transmitter is empty. -@@ -2502,7 +2502,7 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", -- __FILE__,__LINE__,tty->driver->name, port->count); -+ __FILE__,__LINE__,tty->driver->name, atomic_read(&port->count)); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){ -@@ -2522,11 +2522,11 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) - goto cleanup; - } - spin_lock(&port->lock); -- port->count++; -+ atomic_inc(&port->count); - spin_unlock(&port->lock); - spin_unlock_irqrestore(&info->netlock, flags); - -- if (port->count == 1) { -+ if (atomic_read(&port->count) == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info, tty); - if (retval < 0) -@@ -3891,7 +3891,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short new_crctype; - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - switch (encoding) -@@ -3994,7 +3994,7 @@ static int hdlcdev_open(struct net_device *dev) - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); -- if (info->port.count != 0 || info->netcount != 0) { -+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; -@@ -4083,7 +4083,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - if (cmd != SIOCWANDEV) -diff --git a/drivers/char/random.c b/drivers/char/random.c -index b86eae9..4192a7a 100644 ---- a/drivers/char/random.c -+++ b/drivers/char/random.c -@@ -272,8 +272,13 @@ - /* - * Configuration information - */ -+#ifdef CONFIG_GRKERNSEC_RANDNET -+#define INPUT_POOL_WORDS 512 -+#define OUTPUT_POOL_WORDS 128 -+#else - #define INPUT_POOL_WORDS 128 - #define OUTPUT_POOL_WORDS 32 -+#endif - #define SEC_XFER_SIZE 512 - #define EXTRACT_SIZE 10 - -@@ -313,10 +318,17 @@ static struct poolinfo { - int poolwords; - int tap1, tap2, tap3, tap4, tap5; - } poolinfo_table[] = { -+#ifdef CONFIG_GRKERNSEC_RANDNET -+ /* x^512 + x^411 + x^308 + x^208 +x^104 + x + 1 -- 225 */ -+ { 512, 411, 308, 208, 104, 1 }, -+ /* x^128 + x^103 + x^76 + x^51 + x^25 + x + 1 -- 105 */ -+ { 128, 103, 76, 51, 25, 1 }, -+#else - /* x^128 + x^103 + x^76 + x^51 +x^25 + x + 1 -- 105 */ - { 128, 103, 76, 51, 25, 1 }, - /* x^32 + x^26 + x^20 + x^14 + x^7 + x + 1 -- 15 */ - { 32, 26, 20, 14, 7, 1 }, -+#endif - #if 0 - /* x^2048 + x^1638 + x^1231 + x^819 + x^411 + x + 1 -- 115 */ - { 2048, 1638, 1231, 819, 411, 1 }, -@@ -527,8 +539,8 @@ static void _mix_pool_bytes(struct entropy_store *r, const void *in, - input_rotate += i ? 7 : 14; - } - -- ACCESS_ONCE(r->input_rotate) = input_rotate; -- ACCESS_ONCE(r->add_ptr) = i; -+ ACCESS_ONCE_RW(r->input_rotate) = input_rotate; -+ ACCESS_ONCE_RW(r->add_ptr) = i; - smp_wmb(); - - if (out) -@@ -799,6 +811,17 @@ void add_disk_randomness(struct gendisk *disk) - } - #endif - -+#ifdef CONFIG_PAX_LATENT_ENTROPY -+u64 latent_entropy; -+ -+__init void transfer_latent_entropy(void) -+{ -+ mix_pool_bytes(&input_pool, &latent_entropy, sizeof(latent_entropy), NULL); -+ mix_pool_bytes(&nonblocking_pool, &latent_entropy, sizeof(latent_entropy), NULL); -+// printk(KERN_INFO "PAX: transferring latent entropy: %16llx\n", latent_entropy); -+} -+#endif -+ - /********************************************************************* - * - * Entropy extraction routines -@@ -1008,7 +1031,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf, - - extract_buf(r, tmp); - i = min_t(int, nbytes, EXTRACT_SIZE); -- if (copy_to_user(buf, tmp, i)) { -+ if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) { - ret = -EFAULT; - break; - } -@@ -1342,7 +1365,7 @@ EXPORT_SYMBOL(generate_random_uuid); - #include - - static int min_read_thresh = 8, min_write_thresh; --static int max_read_thresh = INPUT_POOL_WORDS * 32; -+static int max_read_thresh = OUTPUT_POOL_WORDS * 32; - static int max_write_thresh = INPUT_POOL_WORDS * 32; - static char sysctl_bootid[16]; - -diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c -index f877805..403375a 100644 ---- a/drivers/char/sonypi.c -+++ b/drivers/char/sonypi.c -@@ -54,6 +54,7 @@ - - #include - #include -+#include - - #include - -@@ -490,7 +491,7 @@ static struct sonypi_device { - spinlock_t fifo_lock; - wait_queue_head_t fifo_proc_list; - struct fasync_struct *fifo_async; -- int open_count; -+ local_t open_count; - int model; - struct input_dev *input_jog_dev; - struct input_dev *input_key_dev; -@@ -897,7 +898,7 @@ static int sonypi_misc_fasync(int fd, struct file *filp, int on) - static int sonypi_misc_release(struct inode *inode, struct file *file) - { - mutex_lock(&sonypi_device.lock); -- sonypi_device.open_count--; -+ local_dec(&sonypi_device.open_count); - mutex_unlock(&sonypi_device.lock); - return 0; - } -@@ -906,9 +907,9 @@ static int sonypi_misc_open(struct inode *inode, struct file *file) - { - mutex_lock(&sonypi_device.lock); - /* Flush input queue on first open */ -- if (!sonypi_device.open_count) -+ if (!local_read(&sonypi_device.open_count)) - kfifo_reset(&sonypi_device.fifo); -- sonypi_device.open_count++; -+ local_inc(&sonypi_device.open_count); - mutex_unlock(&sonypi_device.lock); - - return 0; -diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c -index 4dc8024..90108d1 100644 ---- a/drivers/char/tpm/tpm.c -+++ b/drivers/char/tpm/tpm.c -@@ -415,7 +415,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, - chip->vendor.req_complete_val) - goto out_recv; - -- if ((status == chip->vendor.req_canceled)) { -+ if (status == chip->vendor.req_canceled) { - dev_err(chip->dev, "Operation Canceled\n"); - rc = -ECANCELED; - goto out; -diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c -index 0636520..169c1d0 100644 ---- a/drivers/char/tpm/tpm_bios.c -+++ b/drivers/char/tpm/tpm_bios.c -@@ -173,7 +173,7 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos) - event = addr; - - if ((event->event_type == 0 && event->event_size == 0) || -- ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit)) -+ (event->event_size >= limit - addr - sizeof(struct tcpa_event))) - return NULL; - - return addr; -@@ -198,7 +198,7 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v, - return NULL; - - if ((event->event_type == 0 && event->event_size == 0) || -- ((v + sizeof(struct tcpa_event) + event->event_size) >= limit)) -+ (event->event_size >= limit - v - sizeof(struct tcpa_event))) - return NULL; - - (*pos)++; -@@ -291,7 +291,8 @@ static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v) - int i; - - for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++) -- seq_putc(m, data[i]); -+ if (!seq_putc(m, data[i])) -+ return -EFAULT; - - return 0; - } -@@ -410,8 +411,13 @@ static int read_log(struct tpm_bios_log *log) - log->bios_event_log_end = log->bios_event_log + len; - - virt = acpi_os_map_memory(start, len); -+ if (!virt) { -+ kfree(log->bios_event_log); -+ log->bios_event_log = NULL; -+ return -EFAULT; -+ } - -- memcpy(log->bios_event_log, virt, len); -+ memcpy(log->bios_event_log, (const char __force_kernel *)virt, len); - - acpi_os_unmap_memory(virt, len); - return 0; -diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c -index f77e341..b4fc350 100644 ---- a/drivers/char/virtio_console.c -+++ b/drivers/char/virtio_console.c -@@ -563,7 +563,7 @@ static ssize_t fill_readbuf(struct port *port, char *out_buf, size_t out_count, - if (to_user) { - ssize_t ret; - -- ret = copy_to_user(out_buf, buf->buf + buf->offset, out_count); -+ ret = copy_to_user((char __force_user *)out_buf, buf->buf + buf->offset, out_count); - if (ret) - return -EFAULT; - } else { -@@ -662,7 +662,7 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf, - if (!port_has_data(port) && !port->host_connected) - return 0; - -- return fill_readbuf(port, ubuf, count, true); -+ return fill_readbuf(port, (char __force_kernel *)ubuf, count, true); - } - - static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, -diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c -index 1bfb207..0d059c2 100644 ---- a/drivers/edac/edac_pci_sysfs.c -+++ b/drivers/edac/edac_pci_sysfs.c -@@ -26,8 +26,8 @@ static int edac_pci_log_pe = 1; /* log PCI parity errors */ - static int edac_pci_log_npe = 1; /* log PCI non-parity error errors */ - static int edac_pci_poll_msec = 1000; /* one second workq period */ - --static atomic_t pci_parity_count = ATOMIC_INIT(0); --static atomic_t pci_nonparity_count = ATOMIC_INIT(0); -+static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0); -+static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0); - - static struct kobject *edac_pci_top_main_kobj; - static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0); -@@ -579,7 +579,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - edac_printk(KERN_CRIT, EDAC_PCI, - "Signaled System Error on %s\n", - pci_name(dev)); -- atomic_inc(&pci_nonparity_count); -+ atomic_inc_unchecked(&pci_nonparity_count); - } - - if (status & (PCI_STATUS_PARITY)) { -@@ -587,7 +587,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - "Master Data Parity Error on %s\n", - pci_name(dev)); - -- atomic_inc(&pci_parity_count); -+ atomic_inc_unchecked(&pci_parity_count); - } - - if (status & (PCI_STATUS_DETECTED_PARITY)) { -@@ -595,7 +595,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - "Detected Parity Error on %s\n", - pci_name(dev)); - -- atomic_inc(&pci_parity_count); -+ atomic_inc_unchecked(&pci_parity_count); - } - } - -@@ -618,7 +618,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " - "Signaled System Error on %s\n", - pci_name(dev)); -- atomic_inc(&pci_nonparity_count); -+ atomic_inc_unchecked(&pci_nonparity_count); - } - - if (status & (PCI_STATUS_PARITY)) { -@@ -626,7 +626,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - "Master Data Parity Error on " - "%s\n", pci_name(dev)); - -- atomic_inc(&pci_parity_count); -+ atomic_inc_unchecked(&pci_parity_count); - } - - if (status & (PCI_STATUS_DETECTED_PARITY)) { -@@ -634,7 +634,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) - "Detected Parity Error on %s\n", - pci_name(dev)); - -- atomic_inc(&pci_parity_count); -+ atomic_inc_unchecked(&pci_parity_count); - } - } - } -@@ -676,7 +676,7 @@ void edac_pci_do_parity_check(void) - if (!check_pci_errors) - return; - -- before_count = atomic_read(&pci_parity_count); -+ before_count = atomic_read_unchecked(&pci_parity_count); - - /* scan all PCI devices looking for a Parity Error on devices and - * bridges. -@@ -688,7 +688,7 @@ void edac_pci_do_parity_check(void) - /* Only if operator has selected panic on PCI Error */ - if (edac_pci_get_panic_on_pe()) { - /* If the count is different 'after' from 'before' */ -- if (before_count != atomic_read(&pci_parity_count)) -+ if (before_count != atomic_read_unchecked(&pci_parity_count)) - panic("EDAC: PCI Parity Error"); - } - } -diff --git a/drivers/edac/mce_amd.h b/drivers/edac/mce_amd.h -index 8c87a5e..a19cbd7 100644 ---- a/drivers/edac/mce_amd.h -+++ b/drivers/edac/mce_amd.h -@@ -80,7 +80,7 @@ extern const char * const ii_msgs[]; - struct amd_decoder_ops { - bool (*dc_mce)(u16, u8); - bool (*ic_mce)(u16, u8); --}; -+} __no_const; - - void amd_report_gart_errors(bool); - void amd_register_ecc_decoder(void (*f)(int, struct mce *)); -diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c -index 57ea7f4..789e3c3 100644 ---- a/drivers/firewire/core-card.c -+++ b/drivers/firewire/core-card.c -@@ -680,7 +680,7 @@ EXPORT_SYMBOL_GPL(fw_card_release); - - void fw_core_remove_card(struct fw_card *card) - { -- struct fw_card_driver dummy_driver = dummy_driver_template; -+ fw_card_driver_no_const dummy_driver = dummy_driver_template; - - card->driver->update_phy_reg(card, 4, - PHY_LINK_ACTIVE | PHY_CONTENDER, 0); -diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c -index f8d2287..5aaf4db 100644 ---- a/drivers/firewire/core-cdev.c -+++ b/drivers/firewire/core-cdev.c -@@ -1365,8 +1365,7 @@ static int init_iso_resource(struct client *client, - int ret; - - if ((request->channels == 0 && request->bandwidth == 0) || -- request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL || -- request->bandwidth < 0) -+ request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL) - return -EINVAL; - - r = kmalloc(sizeof(*r), GFP_KERNEL); -diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c -index 87d6f2d..5bf9d90 100644 ---- a/drivers/firewire/core-transaction.c -+++ b/drivers/firewire/core-transaction.c -@@ -37,6 +37,7 @@ - #include - #include - #include -+#include - - #include - -diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h -index 515a42c..5ecf3ba 100644 ---- a/drivers/firewire/core.h -+++ b/drivers/firewire/core.h -@@ -111,6 +111,7 @@ struct fw_card_driver { - - int (*stop_iso)(struct fw_iso_context *ctx); - }; -+typedef struct fw_card_driver __no_const fw_card_driver_no_const; - - void fw_card_initialize(struct fw_card *card, - const struct fw_card_driver *driver, struct device *device); -diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c -index 982f1f5..d21e5da 100644 ---- a/drivers/firmware/dmi_scan.c -+++ b/drivers/firmware/dmi_scan.c -@@ -491,11 +491,6 @@ void __init dmi_scan_machine(void) - } - } - else { -- /* -- * no iounmap() for that ioremap(); it would be a no-op, but -- * it's so early in setup that sucker gets confused into doing -- * what it shouldn't if we actually call it. -- */ - p = dmi_ioremap(0xF0000, 0x10000); - if (p == NULL) - goto error; -@@ -770,7 +765,7 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *), - if (buf == NULL) - return -1; - -- dmi_table(buf, dmi_len, dmi_num, decode, private_data); -+ dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data); - - iounmap(buf); - return 0; -diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c -index 82d5c20..44a7177 100644 ---- a/drivers/gpio/gpio-vr41xx.c -+++ b/drivers/gpio/gpio-vr41xx.c -@@ -204,7 +204,7 @@ static int giu_get_irq(unsigned int irq) - printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n", - maskl, pendl, maskh, pendh); - -- atomic_inc(&irq_err_count); -+ atomic_inc_unchecked(&irq_err_count); - - return -EINVAL; - } -diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c -index 3252e70..b5314ace 100644 ---- a/drivers/gpu/drm/drm_crtc_helper.c -+++ b/drivers/gpu/drm/drm_crtc_helper.c -@@ -286,7 +286,7 @@ static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, - struct drm_crtc *tmp; - int crtc_mask = 1; - -- WARN(!crtc, "checking null crtc?\n"); -+ BUG_ON(!crtc); - - dev = crtc->dev; - -diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c -index 9238de4..a27c72a 100644 ---- a/drivers/gpu/drm/drm_drv.c -+++ b/drivers/gpu/drm/drm_drv.c -@@ -307,7 +307,7 @@ module_exit(drm_core_exit); - /** - * Copy and IOCTL return string to user space - */ --static int drm_copy_field(char *buf, size_t *buf_len, const char *value) -+static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value) - { - int len; - -@@ -390,7 +390,7 @@ long drm_ioctl(struct file *filp, - return -ENODEV; - - atomic_inc(&dev->ioctl_count); -- atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_IOCTLS]); - ++file_priv->ioctl_count; - - DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", -diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c -index 7aff5c7..bee6c27 100644 ---- a/drivers/gpu/drm/drm_fops.c -+++ b/drivers/gpu/drm/drm_fops.c -@@ -71,7 +71,7 @@ static int drm_setup(struct drm_device * dev) - } - - for (i = 0; i < ARRAY_SIZE(dev->counts); i++) -- atomic_set(&dev->counts[i], 0); -+ atomic_set_unchecked(&dev->counts[i], 0); - - dev->sigdata.lock = NULL; - -@@ -134,7 +134,7 @@ int drm_open(struct inode *inode, struct file *filp) - if (drm_device_is_unplugged(dev)) - return -ENODEV; - -- if (!dev->open_count++) -+ if (local_inc_return(&dev->open_count) == 1) - need_setup = 1; - mutex_lock(&dev->struct_mutex); - old_mapping = dev->dev_mapping; -@@ -149,7 +149,7 @@ int drm_open(struct inode *inode, struct file *filp) - retcode = drm_open_helper(inode, filp, dev); - if (retcode) - goto err_undo; -- atomic_inc(&dev->counts[_DRM_STAT_OPENS]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_OPENS]); - if (need_setup) { - retcode = drm_setup(dev); - if (retcode) -@@ -164,7 +164,7 @@ err_undo: - iput(container_of(dev->dev_mapping, struct inode, i_data)); - dev->dev_mapping = old_mapping; - mutex_unlock(&dev->struct_mutex); -- dev->open_count--; -+ local_dec(&dev->open_count); - return retcode; - } - EXPORT_SYMBOL(drm_open); -@@ -438,7 +438,7 @@ int drm_release(struct inode *inode, struct file *filp) - - mutex_lock(&drm_global_mutex); - -- DRM_DEBUG("open_count = %d\n", dev->open_count); -+ DRM_DEBUG("open_count = %ld\n", local_read(&dev->open_count)); - - if (dev->driver->preclose) - dev->driver->preclose(dev, file_priv); -@@ -447,10 +447,10 @@ int drm_release(struct inode *inode, struct file *filp) - * Begin inline drm_release - */ - -- DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", -+ DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %ld\n", - task_pid_nr(current), - (long)old_encode_dev(file_priv->minor->device), -- dev->open_count); -+ local_read(&dev->open_count)); - - /* Release any auth tokens that might point to this file_priv, - (do that under the drm_global_mutex) */ -@@ -546,8 +546,8 @@ int drm_release(struct inode *inode, struct file *filp) - * End inline drm_release - */ - -- atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); -- if (!--dev->open_count) { -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_CLOSES]); -+ if (local_dec_and_test(&dev->open_count)) { - if (atomic_read(&dev->ioctl_count)) { - DRM_ERROR("Device busy: %d\n", - atomic_read(&dev->ioctl_count)); -diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c -index c87dc96..326055d 100644 ---- a/drivers/gpu/drm/drm_global.c -+++ b/drivers/gpu/drm/drm_global.c -@@ -36,7 +36,7 @@ - struct drm_global_item { - struct mutex mutex; - void *object; -- int refcount; -+ atomic_t refcount; - }; - - static struct drm_global_item glob[DRM_GLOBAL_NUM]; -@@ -49,7 +49,7 @@ void drm_global_init(void) - struct drm_global_item *item = &glob[i]; - mutex_init(&item->mutex); - item->object = NULL; -- item->refcount = 0; -+ atomic_set(&item->refcount, 0); - } - } - -@@ -59,7 +59,7 @@ void drm_global_release(void) - for (i = 0; i < DRM_GLOBAL_NUM; ++i) { - struct drm_global_item *item = &glob[i]; - BUG_ON(item->object != NULL); -- BUG_ON(item->refcount != 0); -+ BUG_ON(atomic_read(&item->refcount) != 0); - } - } - -@@ -70,7 +70,7 @@ int drm_global_item_ref(struct drm_global_reference *ref) - void *object; - - mutex_lock(&item->mutex); -- if (item->refcount == 0) { -+ if (atomic_read(&item->refcount) == 0) { - item->object = kzalloc(ref->size, GFP_KERNEL); - if (unlikely(item->object == NULL)) { - ret = -ENOMEM; -@@ -83,7 +83,7 @@ int drm_global_item_ref(struct drm_global_reference *ref) - goto out_err; - - } -- ++item->refcount; -+ atomic_inc(&item->refcount); - ref->object = item->object; - object = item->object; - mutex_unlock(&item->mutex); -@@ -100,9 +100,9 @@ void drm_global_item_unref(struct drm_global_reference *ref) - struct drm_global_item *item = &glob[ref->global_type]; - - mutex_lock(&item->mutex); -- BUG_ON(item->refcount == 0); -+ BUG_ON(atomic_read(&item->refcount) == 0); - BUG_ON(ref->object != item->object); -- if (--item->refcount == 0) { -+ if (atomic_dec_and_test(&item->refcount)) { - ref->release(ref); - item->object = NULL; - } -diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c -index 8928edb..0c79258 100644 ---- a/drivers/gpu/drm/drm_info.c -+++ b/drivers/gpu/drm/drm_info.c -@@ -75,10 +75,14 @@ int drm_vm_info(struct seq_file *m, void *data) - struct drm_local_map *map; - struct drm_map_list *r_list; - -- /* Hardcoded from _DRM_FRAME_BUFFER, -- _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and -- _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ -- const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; -+ static const char * const types[] = { -+ [_DRM_FRAME_BUFFER] = "FB", -+ [_DRM_REGISTERS] = "REG", -+ [_DRM_SHM] = "SHM", -+ [_DRM_AGP] = "AGP", -+ [_DRM_SCATTER_GATHER] = "SG", -+ [_DRM_CONSISTENT] = "PCI", -+ [_DRM_GEM] = "GEM" }; - const char *type; - int i; - -@@ -89,7 +93,7 @@ int drm_vm_info(struct seq_file *m, void *data) - map = r_list->map; - if (!map) - continue; -- if (map->type < 0 || map->type > 5) -+ if (map->type >= ARRAY_SIZE(types)) - type = "??"; - else - type = types[map->type]; -@@ -254,7 +258,11 @@ int drm_vma_info(struct seq_file *m, void *data) - vma->vm_flags & VM_MAYSHARE ? 's' : 'p', - vma->vm_flags & VM_LOCKED ? 'l' : '-', - vma->vm_flags & VM_IO ? 'i' : '-', -+#ifdef CONFIG_GRKERNSEC_HIDESYM -+ 0); -+#else - vma->vm_pgoff); -+#endif - - #if defined(__i386__) - pgprot = pgprot_val(vma->vm_page_prot); -diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c -index 637fcc3..e890b33 100644 ---- a/drivers/gpu/drm/drm_ioc32.c -+++ b/drivers/gpu/drm/drm_ioc32.c -@@ -457,7 +457,7 @@ static int compat_drm_infobufs(struct file *file, unsigned int cmd, - request = compat_alloc_user_space(nbytes); - if (!access_ok(VERIFY_WRITE, request, nbytes)) - return -EFAULT; -- list = (struct drm_buf_desc *) (request + 1); -+ list = (struct drm_buf_desc __user *) (request + 1); - - if (__put_user(count, &request->count) - || __put_user(list, &request->list)) -@@ -518,7 +518,7 @@ static int compat_drm_mapbufs(struct file *file, unsigned int cmd, - request = compat_alloc_user_space(nbytes); - if (!access_ok(VERIFY_WRITE, request, nbytes)) - return -EFAULT; -- list = (struct drm_buf_pub *) (request + 1); -+ list = (struct drm_buf_pub __user *) (request + 1); - - if (__put_user(count, &request->count) - || __put_user(list, &request->list)) -diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c -index 64a62c6..ceab35e 100644 ---- a/drivers/gpu/drm/drm_ioctl.c -+++ b/drivers/gpu/drm/drm_ioctl.c -@@ -252,7 +252,7 @@ int drm_getstats(struct drm_device *dev, void *data, - stats->data[i].value = - (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); - else -- stats->data[i].value = atomic_read(&dev->counts[i]); -+ stats->data[i].value = atomic_read_unchecked(&dev->counts[i]); - stats->data[i].type = dev->types[i]; - } - -diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c -index 3203955..c8090af 100644 ---- a/drivers/gpu/drm/drm_lock.c -+++ b/drivers/gpu/drm/drm_lock.c -@@ -86,7 +86,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv) - if (drm_lock_take(&master->lock, lock->context)) { - master->lock.file_priv = file_priv; - master->lock.lock_time = jiffies; -- atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_LOCKS]); - break; /* Got lock */ - } - -@@ -157,7 +157,7 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv) - return -EINVAL; - } - -- atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_UNLOCKS]); - - if (drm_lock_free(&master->lock, lock->context)) { - /* FIXME: Should really bail out here. */ -diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c -index 21bcd4a..8e074e0 100644 ---- a/drivers/gpu/drm/drm_stub.c -+++ b/drivers/gpu/drm/drm_stub.c -@@ -511,7 +511,7 @@ void drm_unplug_dev(struct drm_device *dev) - - drm_device_set_unplugged(dev); - -- if (dev->open_count == 0) { -+ if (local_read(&dev->open_count) == 0) { - drm_put_dev(dev); - } - mutex_unlock(&drm_global_mutex); -diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c -index 463ec68..f5bd2b5 100644 ---- a/drivers/gpu/drm/i810/i810_dma.c -+++ b/drivers/gpu/drm/i810/i810_dma.c -@@ -946,8 +946,8 @@ static int i810_dma_vertex(struct drm_device *dev, void *data, - dma->buflist[vertex->idx], - vertex->discard, vertex->used); - -- atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); -- atomic_inc(&dev->counts[_DRM_STAT_DMA]); -+ atomic_add_unchecked(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); - sarea_priv->last_enqueue = dev_priv->counter - 1; - sarea_priv->last_dispatch = (int)hw_status[5]; - -@@ -1107,8 +1107,8 @@ static int i810_dma_mc(struct drm_device *dev, void *data, - i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used, - mc->last_render); - -- atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); -- atomic_inc(&dev->counts[_DRM_STAT_DMA]); -+ atomic_add_unchecked(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); -+ atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); - sarea_priv->last_enqueue = dev_priv->counter - 1; - sarea_priv->last_dispatch = (int)hw_status[5]; - -diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h -index 6e0acad..93c8289 100644 ---- a/drivers/gpu/drm/i810/i810_drv.h -+++ b/drivers/gpu/drm/i810/i810_drv.h -@@ -108,8 +108,8 @@ typedef struct drm_i810_private { - int page_flipping; - - wait_queue_head_t irq_queue; -- atomic_t irq_received; -- atomic_t irq_emitted; -+ atomic_unchecked_t irq_received; -+ atomic_unchecked_t irq_emitted; - - int front_offset; - } drm_i810_private_t; -diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c -index 359f6e8..ada68fd 100644 ---- a/drivers/gpu/drm/i915/i915_debugfs.c -+++ b/drivers/gpu/drm/i915/i915_debugfs.c -@@ -518,7 +518,7 @@ static int i915_interrupt_info(struct seq_file *m, void *data) - I915_READ(GTIMR)); - } - seq_printf(m, "Interrupts received: %d\n", -- atomic_read(&dev_priv->irq_received)); -+ atomic_read_unchecked(&dev_priv->irq_received)); - for (i = 0; i < I915_NUM_RINGS; i++) { - if (IS_GEN6(dev) || IS_GEN7(dev)) { - seq_printf(m, "Graphics Interrupt mask (%s): %08x\n", -diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c -index 0969a7c..b9ffa45 100644 ---- a/drivers/gpu/drm/i915/i915_dma.c -+++ b/drivers/gpu/drm/i915/i915_dma.c -@@ -1269,7 +1269,7 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev) - bool can_switch; - - spin_lock(&dev->count_lock); -- can_switch = (dev->open_count == 0); -+ can_switch = (local_read(&dev->open_count) == 0); - spin_unlock(&dev->count_lock); - return can_switch; - } -diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h -index 627fe35..c9a7346 100644 ---- a/drivers/gpu/drm/i915/i915_drv.h -+++ b/drivers/gpu/drm/i915/i915_drv.h -@@ -272,12 +272,12 @@ struct drm_i915_display_funcs { - /* render clock increase/decrease */ - /* display clock increase/decrease */ - /* pll clock increase/decrease */ --}; -+} __no_const; - - struct drm_i915_gt_funcs { - void (*force_wake_get)(struct drm_i915_private *dev_priv); - void (*force_wake_put)(struct drm_i915_private *dev_priv); --}; -+} __no_const; - - struct intel_device_info { - u8 gen; -@@ -408,7 +408,7 @@ typedef struct drm_i915_private { - int current_page; - int page_flipping; - -- atomic_t irq_received; -+ atomic_unchecked_t irq_received; - - /* protects the irq masks */ - spinlock_t irq_lock; -@@ -1014,7 +1014,7 @@ struct drm_i915_gem_object { - * will be page flipped away on the next vblank. When it - * reaches 0, dev_priv->pending_flip_queue will be woken up. - */ -- atomic_t pending_flip; -+ atomic_unchecked_t pending_flip; - }; - - #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base) -@@ -1482,7 +1482,7 @@ extern struct i2c_adapter *intel_gmbus_get_adapter( - struct drm_i915_private *dev_priv, unsigned port); - extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed); - extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit); --extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) -+static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) - { - return container_of(adapter, struct intel_gmbus, adapter)->force_bit; - } -diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c -index d8bb392..124fd07 100644 ---- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c -+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c -@@ -189,7 +189,7 @@ i915_gem_object_set_to_gpu_domain(struct drm_i915_gem_object *obj, - i915_gem_clflush_object(obj); - - if (obj->base.pending_write_domain) -- cd->flips |= atomic_read(&obj->pending_flip); -+ cd->flips |= atomic_read_unchecked(&obj->pending_flip); - - /* The actual obj->write_domain will be updated with - * pending_write_domain after we emit the accumulated flush for all -@@ -928,9 +928,9 @@ i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec) - - static int - validate_exec_list(struct drm_i915_gem_exec_object2 *exec, -- int count) -+ unsigned int count) - { -- int i; -+ unsigned int i; - - for (i = 0; i < count; i++) { - char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr; -diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c -index 73fa3e1..ab2e9b9 100644 ---- a/drivers/gpu/drm/i915/i915_irq.c -+++ b/drivers/gpu/drm/i915/i915_irq.c -@@ -514,7 +514,7 @@ static irqreturn_t valleyview_irq_handler(DRM_IRQ_ARGS) - u32 pipe_stats[I915_MAX_PIPES]; - bool blc_event; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - while (true) { - iir = I915_READ(VLV_IIR); -@@ -661,7 +661,7 @@ static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS) - irqreturn_t ret = IRQ_NONE; - int i; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - /* disable master interrupt before clearing iir */ - de_ier = I915_READ(DEIER); -@@ -736,7 +736,7 @@ static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS) - u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir; - u32 hotplug_mask; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - /* disable master interrupt before clearing iir */ - de_ier = I915_READ(DEIER); -@@ -1717,7 +1717,7 @@ static void ironlake_irq_preinstall(struct drm_device *dev) - { - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - -- atomic_set(&dev_priv->irq_received, 0); -+ atomic_set_unchecked(&dev_priv->irq_received, 0); - - I915_WRITE(HWSTAM, 0xeffe); - -@@ -1743,7 +1743,7 @@ static void valleyview_irq_preinstall(struct drm_device *dev) - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - int pipe; - -- atomic_set(&dev_priv->irq_received, 0); -+ atomic_set_unchecked(&dev_priv->irq_received, 0); - - /* VLV magic */ - I915_WRITE(VLV_IMR, 0); -@@ -2048,7 +2048,7 @@ static void i8xx_irq_preinstall(struct drm_device * dev) - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - int pipe; - -- atomic_set(&dev_priv->irq_received, 0); -+ atomic_set_unchecked(&dev_priv->irq_received, 0); - - for_each_pipe(pipe) - I915_WRITE(PIPESTAT(pipe), 0); -@@ -2099,7 +2099,7 @@ static irqreturn_t i8xx_irq_handler(DRM_IRQ_ARGS) - I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | - I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - iir = I915_READ16(IIR); - if (iir == 0) -@@ -2184,7 +2184,7 @@ static void i915_irq_preinstall(struct drm_device * dev) - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - int pipe; - -- atomic_set(&dev_priv->irq_received, 0); -+ atomic_set_unchecked(&dev_priv->irq_received, 0); - - if (I915_HAS_HOTPLUG(dev)) { - I915_WRITE(PORT_HOTPLUG_EN, 0); -@@ -2279,7 +2279,7 @@ static irqreturn_t i915_irq_handler(DRM_IRQ_ARGS) - }; - int pipe, ret = IRQ_NONE; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - iir = I915_READ(IIR); - do { -@@ -2405,7 +2405,7 @@ static void i965_irq_preinstall(struct drm_device * dev) - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - int pipe; - -- atomic_set(&dev_priv->irq_received, 0); -+ atomic_set_unchecked(&dev_priv->irq_received, 0); - - I915_WRITE(PORT_HOTPLUG_EN, 0); - I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); -@@ -2512,7 +2512,7 @@ static irqreturn_t i965_irq_handler(DRM_IRQ_ARGS) - int irq_received; - int ret = IRQ_NONE, pipe; - -- atomic_inc(&dev_priv->irq_received); -+ atomic_inc_unchecked(&dev_priv->irq_received); - - iir = I915_READ(IIR); - -diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c -index 3098027..06bef07 100644 ---- a/drivers/gpu/drm/i915/intel_display.c -+++ b/drivers/gpu/drm/i915/intel_display.c -@@ -2182,7 +2182,7 @@ intel_finish_fb(struct drm_framebuffer *old_fb) - - wait_event(dev_priv->pending_flip_queue, - atomic_read(&dev_priv->mm.wedged) || -- atomic_read(&obj->pending_flip) == 0); -+ atomic_read_unchecked(&obj->pending_flip) == 0); - - /* Big Hammer, we also need to ensure that any pending - * MI_WAIT_FOR_EVENT inside a user batch buffer on the -@@ -6160,8 +6160,7 @@ static void do_intel_finish_page_flip(struct drm_device *dev, - - obj = work->old_fb_obj; - -- atomic_clear_mask(1 << intel_crtc->plane, -- &obj->pending_flip.counter); -+ atomic_clear_mask_unchecked(1 << intel_crtc->plane, &obj->pending_flip); - - wake_up(&dev_priv->pending_flip_queue); - schedule_work(&work->work); -@@ -6507,7 +6506,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, - /* Block clients from rendering to the new back buffer until - * the flip occurs and the object is no longer visible. - */ -- atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); -+ atomic_add_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); - - ret = dev_priv->display.queue_flip(dev, crtc, fb, obj); - if (ret) -@@ -6522,7 +6521,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, - return 0; - - cleanup_pending: -- atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); -+ atomic_sub_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); - drm_gem_object_unreference(&work->old_fb_obj->base); - drm_gem_object_unreference(&obj->base); - mutex_unlock(&dev->struct_mutex); -diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h -index 54558a0..2d97005 100644 ---- a/drivers/gpu/drm/mga/mga_drv.h -+++ b/drivers/gpu/drm/mga/mga_drv.h -@@ -120,9 +120,9 @@ typedef struct drm_mga_private { - u32 clear_cmd; - u32 maccess; - -- atomic_t vbl_received; /**< Number of vblanks received. */ -+ atomic_unchecked_t vbl_received; /**< Number of vblanks received. */ - wait_queue_head_t fence_queue; -- atomic_t last_fence_retired; -+ atomic_unchecked_t last_fence_retired; - u32 next_fence_to_post; - - unsigned int fb_cpp; -diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c -index 2581202..f230a8d9 100644 ---- a/drivers/gpu/drm/mga/mga_irq.c -+++ b/drivers/gpu/drm/mga/mga_irq.c -@@ -44,7 +44,7 @@ u32 mga_get_vblank_counter(struct drm_device *dev, int crtc) - if (crtc != 0) - return 0; - -- return atomic_read(&dev_priv->vbl_received); -+ return atomic_read_unchecked(&dev_priv->vbl_received); - } - - -@@ -60,7 +60,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) - /* VBLANK interrupt */ - if (status & MGA_VLINEPEN) { - MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR); -- atomic_inc(&dev_priv->vbl_received); -+ atomic_inc_unchecked(&dev_priv->vbl_received); - drm_handle_vblank(dev, 0); - handled = 1; - } -@@ -79,7 +79,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) - if ((prim_start & ~0x03) != (prim_end & ~0x03)) - MGA_WRITE(MGA_PRIMEND, prim_end); - -- atomic_inc(&dev_priv->last_fence_retired); -+ atomic_inc_unchecked(&dev_priv->last_fence_retired); - DRM_WAKEUP(&dev_priv->fence_queue); - handled = 1; - } -@@ -130,7 +130,7 @@ int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence) - * using fences. - */ - DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * DRM_HZ, -- (((cur_fence = atomic_read(&dev_priv->last_fence_retired)) -+ (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired)) - - *sequence) <= (1 << 23))); - - *sequence = cur_fence; -diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c -index a0a3fe3..209bf10 100644 ---- a/drivers/gpu/drm/nouveau/nouveau_bios.c -+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c -@@ -5340,7 +5340,7 @@ parse_bit_U_tbl_entry(struct drm_device *dev, struct nvbios *bios, - struct bit_table { - const char id; - int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *); --}; -+} __no_const; - - #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry }) - -diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h -index 4f2cc95..9c6c510 100644 ---- a/drivers/gpu/drm/nouveau/nouveau_drv.h -+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h -@@ -302,7 +302,7 @@ struct nouveau_exec_engine { - u32 handle, u16 class); - void (*set_tile_region)(struct drm_device *dev, int i); - void (*tlb_flush)(struct drm_device *, int engine); --}; -+} __no_const; - - struct nouveau_instmem_engine { - void *priv; -@@ -324,13 +324,13 @@ struct nouveau_instmem_engine { - struct nouveau_mc_engine { - int (*init)(struct drm_device *dev); - void (*takedown)(struct drm_device *dev); --}; -+} __no_const; - - struct nouveau_timer_engine { - int (*init)(struct drm_device *dev); - void (*takedown)(struct drm_device *dev); - uint64_t (*read)(struct drm_device *dev); --}; -+} __no_const; - - struct nouveau_fb_engine { - int num_tiles; -@@ -547,7 +547,7 @@ struct nouveau_vram_engine { - void (*put)(struct drm_device *, struct nouveau_mem **); - - bool (*flags_valid)(struct drm_device *, u32 tile_flags); --}; -+} __no_const; - - struct nouveau_engine { - struct nouveau_instmem_engine instmem; -@@ -693,7 +693,7 @@ struct drm_nouveau_private { - struct drm_global_reference mem_global_ref; - struct ttm_bo_global_ref bo_global_ref; - struct ttm_bo_device bdev; -- atomic_t validate_sequence; -+ atomic_unchecked_t validate_sequence; - int (*move)(struct nouveau_channel *, - struct ttm_buffer_object *, - struct ttm_mem_reg *, struct ttm_mem_reg *); -diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c -index af7cfb8..aadc2a3 100644 ---- a/drivers/gpu/drm/nouveau/nouveau_gem.c -+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c -@@ -318,7 +318,7 @@ validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, - int trycnt = 0; - int ret, i; - -- sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence); -+ sequence = atomic_add_return_unchecked(1, &dev_priv->ttm.validate_sequence); - retry: - if (++trycnt > 100000) { - NV_ERROR(dev, "%s failed and gave up.\n", __func__); -diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c -index f5e9584..05934ba 100644 ---- a/drivers/gpu/drm/nouveau/nouveau_state.c -+++ b/drivers/gpu/drm/nouveau/nouveau_state.c -@@ -492,7 +492,7 @@ static bool nouveau_switcheroo_can_switch(struct pci_dev *pdev) - bool can_switch; - - spin_lock(&dev->count_lock); -- can_switch = (dev->open_count == 0); -+ can_switch = (local_read(&dev->open_count) == 0); - spin_unlock(&dev->count_lock); - return can_switch; - } -diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c -index 93240bd..c490f60 100644 ---- a/drivers/gpu/drm/nouveau/nv50_sor.c -+++ b/drivers/gpu/drm/nouveau/nv50_sor.c -@@ -304,7 +304,7 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode) - } - - if (nv_encoder->dcb->type == OUTPUT_DP) { -- struct dp_train_func func = { -+ static struct dp_train_func func = { - .link_set = nv50_sor_dp_link_set, - .train_set = nv50_sor_dp_train_set, - .train_adj = nv50_sor_dp_train_adj -diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c -index 8a2fc89..3a5cf40 100644 ---- a/drivers/gpu/drm/nouveau/nvd0_display.c -+++ b/drivers/gpu/drm/nouveau/nvd0_display.c -@@ -1367,7 +1367,7 @@ nvd0_sor_dpms(struct drm_encoder *encoder, int mode) - nv_wait(dev, 0x61c030 + (or * 0x0800), 0x10000000, 0x00000000); - - if (nv_encoder->dcb->type == OUTPUT_DP) { -- struct dp_train_func func = { -+ static struct dp_train_func func = { - .link_set = nvd0_sor_dp_link_set, - .train_set = nvd0_sor_dp_train_set, - .train_adj = nvd0_sor_dp_train_adj -diff --git a/drivers/gpu/drm/r128/r128_cce.c b/drivers/gpu/drm/r128/r128_cce.c -index bcac90b..53bfc76 100644 ---- a/drivers/gpu/drm/r128/r128_cce.c -+++ b/drivers/gpu/drm/r128/r128_cce.c -@@ -378,7 +378,7 @@ static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init) - - /* GH: Simple idle check. - */ -- atomic_set(&dev_priv->idle_count, 0); -+ atomic_set_unchecked(&dev_priv->idle_count, 0); - - /* We don't support anything other than bus-mastering ring mode, - * but the ring can be in either AGP or PCI space for the ring -diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h -index 930c71b..499aded 100644 ---- a/drivers/gpu/drm/r128/r128_drv.h -+++ b/drivers/gpu/drm/r128/r128_drv.h -@@ -90,14 +90,14 @@ typedef struct drm_r128_private { - int is_pci; - unsigned long cce_buffers_offset; - -- atomic_t idle_count; -+ atomic_unchecked_t idle_count; - - int page_flipping; - int current_page; - u32 crtc_offset; - u32 crtc_offset_cntl; - -- atomic_t vbl_received; -+ atomic_unchecked_t vbl_received; - - u32 color_fmt; - unsigned int front_offset; -diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c -index 429d5a0..7e899ed 100644 ---- a/drivers/gpu/drm/r128/r128_irq.c -+++ b/drivers/gpu/drm/r128/r128_irq.c -@@ -42,7 +42,7 @@ u32 r128_get_vblank_counter(struct drm_device *dev, int crtc) - if (crtc != 0) - return 0; - -- return atomic_read(&dev_priv->vbl_received); -+ return atomic_read_unchecked(&dev_priv->vbl_received); - } - - irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS) -@@ -56,7 +56,7 @@ irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS) - /* VBLANK interrupt */ - if (status & R128_CRTC_VBLANK_INT) { - R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK); -- atomic_inc(&dev_priv->vbl_received); -+ atomic_inc_unchecked(&dev_priv->vbl_received); - drm_handle_vblank(dev, 0); - return IRQ_HANDLED; - } -diff --git a/drivers/gpu/drm/r128/r128_state.c b/drivers/gpu/drm/r128/r128_state.c -index a9e33ce..09edd4b 100644 ---- a/drivers/gpu/drm/r128/r128_state.c -+++ b/drivers/gpu/drm/r128/r128_state.c -@@ -321,10 +321,10 @@ static void r128_clear_box(drm_r128_private_t *dev_priv, - - static void r128_cce_performance_boxes(drm_r128_private_t *dev_priv) - { -- if (atomic_read(&dev_priv->idle_count) == 0) -+ if (atomic_read_unchecked(&dev_priv->idle_count) == 0) - r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0); - else -- atomic_set(&dev_priv->idle_count, 0); -+ atomic_set_unchecked(&dev_priv->idle_count, 0); - } - - #endif -diff --git a/drivers/gpu/drm/radeon/mkregtable.c b/drivers/gpu/drm/radeon/mkregtable.c -index 5a82b6b..9e69c73 100644 ---- a/drivers/gpu/drm/radeon/mkregtable.c -+++ b/drivers/gpu/drm/radeon/mkregtable.c -@@ -637,14 +637,14 @@ static int parser_auth(struct table *t, const char *filename) - regex_t mask_rex; - regmatch_t match[4]; - char buf[1024]; -- size_t end; -+ long end; - int len; - int done = 0; - int r; - unsigned o; - struct offset *offset; - char last_reg_s[10]; -- int last_reg; -+ unsigned long last_reg; - - if (regcomp - (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) { -diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h -index 59a1531..3bab49b 100644 ---- a/drivers/gpu/drm/radeon/radeon.h -+++ b/drivers/gpu/drm/radeon/radeon.h -@@ -711,7 +711,7 @@ struct r600_blit_cp_primitives { - int x2, int y2); - void (*draw_auto)(struct radeon_device *rdev); - void (*set_default_state)(struct radeon_device *rdev); --}; -+} __no_const; - - struct r600_blit { - struct radeon_bo *shader_obj; -@@ -1216,7 +1216,7 @@ struct radeon_asic { - u32 (*page_flip)(struct radeon_device *rdev, int crtc, u64 crtc_base); - void (*post_page_flip)(struct radeon_device *rdev, int crtc); - } pflip; --}; -+} __no_const; - - /* - * Asic structures -diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c -index 9d9bf5f..fa6c66b 100644 ---- a/drivers/gpu/drm/radeon/radeon_device.c -+++ b/drivers/gpu/drm/radeon/radeon_device.c -@@ -953,7 +953,7 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev) - bool can_switch; - - spin_lock(&dev->count_lock); -- can_switch = (dev->open_count == 0); -+ can_switch = (local_read(&dev->open_count) == 0); - spin_unlock(&dev->count_lock); - return can_switch; - } -diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h -index a1b59ca..86f2d44 100644 ---- a/drivers/gpu/drm/radeon/radeon_drv.h -+++ b/drivers/gpu/drm/radeon/radeon_drv.h -@@ -255,7 +255,7 @@ typedef struct drm_radeon_private { - - /* SW interrupt */ - wait_queue_head_t swi_queue; -- atomic_t swi_emitted; -+ atomic_unchecked_t swi_emitted; - int vblank_crtc; - uint32_t irq_enable_reg; - uint32_t r500_disp_irq_reg; -diff --git a/drivers/gpu/drm/radeon/radeon_ioc32.c b/drivers/gpu/drm/radeon/radeon_ioc32.c -index 48b7cea..342236f 100644 ---- a/drivers/gpu/drm/radeon/radeon_ioc32.c -+++ b/drivers/gpu/drm/radeon/radeon_ioc32.c -@@ -359,7 +359,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd, - request = compat_alloc_user_space(sizeof(*request)); - if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) - || __put_user(req32.param, &request->param) -- || __put_user((void __user *)(unsigned long)req32.value, -+ || __put_user((unsigned long)req32.value, - &request->value)) - return -EFAULT; - -diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c -index 00da384..32f972d 100644 ---- a/drivers/gpu/drm/radeon/radeon_irq.c -+++ b/drivers/gpu/drm/radeon/radeon_irq.c -@@ -225,8 +225,8 @@ static int radeon_emit_irq(struct drm_device * dev) - unsigned int ret; - RING_LOCALS; - -- atomic_inc(&dev_priv->swi_emitted); -- ret = atomic_read(&dev_priv->swi_emitted); -+ atomic_inc_unchecked(&dev_priv->swi_emitted); -+ ret = atomic_read_unchecked(&dev_priv->swi_emitted); - - BEGIN_RING(4); - OUT_RING_REG(RADEON_LAST_SWI_REG, ret); -@@ -352,7 +352,7 @@ int radeon_driver_irq_postinstall(struct drm_device *dev) - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *) dev->dev_private; - -- atomic_set(&dev_priv->swi_emitted, 0); -+ atomic_set_unchecked(&dev_priv->swi_emitted, 0); - DRM_INIT_WAITQUEUE(&dev_priv->swi_queue); - - dev->max_vblank_count = 0x001fffff; -diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c -index e8422ae..d22d4a8 100644 ---- a/drivers/gpu/drm/radeon/radeon_state.c -+++ b/drivers/gpu/drm/radeon/radeon_state.c -@@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_device *dev, void *data, struct drm_file * - if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS) - sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS; - -- if (DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, -+ if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, - sarea_priv->nbox * sizeof(depth_boxes[0]))) - return -EFAULT; - -@@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm_device *dev, void *data, struct drm_fil - { - drm_radeon_private_t *dev_priv = dev->dev_private; - drm_radeon_getparam_t *param = data; -- int value; -+ int value = 0; - - DRM_DEBUG("pid=%d\n", DRM_CURRENTPID); - -diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c -index 5b71c71..650f9e4 100644 ---- a/drivers/gpu/drm/radeon/radeon_ttm.c -+++ b/drivers/gpu/drm/radeon/radeon_ttm.c -@@ -822,8 +822,10 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma) - } - if (unlikely(ttm_vm_ops == NULL)) { - ttm_vm_ops = vma->vm_ops; -- radeon_ttm_vm_ops = *ttm_vm_ops; -- radeon_ttm_vm_ops.fault = &radeon_ttm_fault; -+ pax_open_kernel(); -+ memcpy((void *)&radeon_ttm_vm_ops, ttm_vm_ops, sizeof(radeon_ttm_vm_ops)); -+ *(void **)&radeon_ttm_vm_ops.fault = &radeon_ttm_fault; -+ pax_close_kernel(); - } - vma->vm_ops = &radeon_ttm_vm_ops; - return 0; -diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c -index 3b663fc..57850f4 100644 ---- a/drivers/gpu/drm/radeon/rs690.c -+++ b/drivers/gpu/drm/radeon/rs690.c -@@ -304,9 +304,11 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev, - if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full && - rdev->pm.sideport_bandwidth.full) - rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth; -- read_delay_latency.full = dfixed_const(370 * 800 * 1000); -+ read_delay_latency.full = dfixed_const(800 * 1000); - read_delay_latency.full = dfixed_div(read_delay_latency, - rdev->pm.igp_sideport_mclk); -+ a.full = dfixed_const(370); -+ read_delay_latency.full = dfixed_mul(read_delay_latency, a); - } else { - if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full && - rdev->pm.k8_bandwidth.full) -diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c -index 578207e..1073f25 100644 ---- a/drivers/gpu/drm/ttm/ttm_page_alloc.c -+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c -@@ -394,9 +394,9 @@ static int ttm_pool_get_num_unused_pages(void) - static int ttm_pool_mm_shrink(struct shrinker *shrink, - struct shrink_control *sc) - { -- static atomic_t start_pool = ATOMIC_INIT(0); -+ static atomic_unchecked_t start_pool = ATOMIC_INIT(0); - unsigned i; -- unsigned pool_offset = atomic_add_return(1, &start_pool); -+ unsigned pool_offset = atomic_add_return_unchecked(1, &start_pool); - struct ttm_page_pool *pool; - int shrink_pages = sc->nr_to_scan; - -diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h -index 88edacc..1e5412b 100644 ---- a/drivers/gpu/drm/via/via_drv.h -+++ b/drivers/gpu/drm/via/via_drv.h -@@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer { - typedef uint32_t maskarray_t[5]; - - typedef struct drm_via_irq { -- atomic_t irq_received; -+ atomic_unchecked_t irq_received; - uint32_t pending_mask; - uint32_t enable_mask; - wait_queue_head_t irq_queue; -@@ -75,7 +75,7 @@ typedef struct drm_via_private { - struct timeval last_vblank; - int last_vblank_valid; - unsigned usec_per_vblank; -- atomic_t vbl_received; -+ atomic_unchecked_t vbl_received; - drm_via_state_t hc_state; - char pci_buf[VIA_PCI_BUF_SIZE]; - const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE]; -diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c -index d391f48..10c8ca3 100644 ---- a/drivers/gpu/drm/via/via_irq.c -+++ b/drivers/gpu/drm/via/via_irq.c -@@ -102,7 +102,7 @@ u32 via_get_vblank_counter(struct drm_device *dev, int crtc) - if (crtc != 0) - return 0; - -- return atomic_read(&dev_priv->vbl_received); -+ return atomic_read_unchecked(&dev_priv->vbl_received); - } - - irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) -@@ -117,8 +117,8 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) - - status = VIA_READ(VIA_REG_INTERRUPT); - if (status & VIA_IRQ_VBLANK_PENDING) { -- atomic_inc(&dev_priv->vbl_received); -- if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) { -+ atomic_inc_unchecked(&dev_priv->vbl_received); -+ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) { - do_gettimeofday(&cur_vblank); - if (dev_priv->last_vblank_valid) { - dev_priv->usec_per_vblank = -@@ -128,7 +128,7 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) - dev_priv->last_vblank = cur_vblank; - dev_priv->last_vblank_valid = 1; - } -- if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) { -+ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) { - DRM_DEBUG("US per vblank is: %u\n", - dev_priv->usec_per_vblank); - } -@@ -138,7 +138,7 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) - - for (i = 0; i < dev_priv->num_irqs; ++i) { - if (status & cur_irq->pending_mask) { -- atomic_inc(&cur_irq->irq_received); -+ atomic_inc_unchecked(&cur_irq->irq_received); - DRM_WAKEUP(&cur_irq->irq_queue); - handled = 1; - if (dev_priv->irq_map[drm_via_irq_dma0_td] == i) -@@ -243,11 +243,11 @@ via_driver_irq_wait(struct drm_device *dev, unsigned int irq, int force_sequence - DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, - ((VIA_READ(masks[irq][2]) & masks[irq][3]) == - masks[irq][4])); -- cur_irq_sequence = atomic_read(&cur_irq->irq_received); -+ cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received); - } else { - DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, - (((cur_irq_sequence = -- atomic_read(&cur_irq->irq_received)) - -+ atomic_read_unchecked(&cur_irq->irq_received)) - - *sequence) <= (1 << 23))); - } - *sequence = cur_irq_sequence; -@@ -285,7 +285,7 @@ void via_driver_irq_preinstall(struct drm_device *dev) - } - - for (i = 0; i < dev_priv->num_irqs; ++i) { -- atomic_set(&cur_irq->irq_received, 0); -+ atomic_set_unchecked(&cur_irq->irq_received, 0); - cur_irq->enable_mask = dev_priv->irq_masks[i][0]; - cur_irq->pending_mask = dev_priv->irq_masks[i][1]; - DRM_INIT_WAITQUEUE(&cur_irq->irq_queue); -@@ -367,7 +367,7 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv) - switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) { - case VIA_IRQ_RELATIVE: - irqwait->request.sequence += -- atomic_read(&cur_irq->irq_received); -+ atomic_read_unchecked(&cur_irq->irq_received); - irqwait->request.type &= ~_DRM_VBLANK_RELATIVE; - case VIA_IRQ_ABSOLUTE: - break; -diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h -index 29c984f..4084f1a 100644 ---- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h -+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h -@@ -263,7 +263,7 @@ struct vmw_private { - * Fencing and IRQs. - */ - -- atomic_t marker_seq; -+ atomic_unchecked_t marker_seq; - wait_queue_head_t fence_queue; - wait_queue_head_t fifo_queue; - int fence_queue_waiters; /* Protected by hw_mutex */ -diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c -index a0c2f12..68ae6cb 100644 ---- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c -+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c -@@ -137,7 +137,7 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo) - (unsigned int) min, - (unsigned int) fifo->capabilities); - -- atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno); -+ atomic_set_unchecked(&dev_priv->marker_seq, dev_priv->last_read_seqno); - iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE); - vmw_marker_queue_init(&fifo->marker_queue); - return vmw_fifo_send_fence(dev_priv, &dummy); -@@ -355,7 +355,7 @@ void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes) - if (reserveable) - iowrite32(bytes, fifo_mem + - SVGA_FIFO_RESERVED); -- return fifo_mem + (next_cmd >> 2); -+ return (__le32 __force_kernel *)fifo_mem + (next_cmd >> 2); - } else { - need_bounce = true; - } -@@ -475,7 +475,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno) - - fm = vmw_fifo_reserve(dev_priv, bytes); - if (unlikely(fm == NULL)) { -- *seqno = atomic_read(&dev_priv->marker_seq); -+ *seqno = atomic_read_unchecked(&dev_priv->marker_seq); - ret = -ENOMEM; - (void)vmw_fallback_wait(dev_priv, false, true, *seqno, - false, 3*HZ); -@@ -483,7 +483,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno) - } - - do { -- *seqno = atomic_add_return(1, &dev_priv->marker_seq); -+ *seqno = atomic_add_return_unchecked(1, &dev_priv->marker_seq); - } while (*seqno == 0); - - if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) { -diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c -index cabc95f..14b3d77 100644 ---- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c -+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c -@@ -107,7 +107,7 @@ bool vmw_seqno_passed(struct vmw_private *dev_priv, - * emitted. Then the fence is stale and signaled. - */ - -- ret = ((atomic_read(&dev_priv->marker_seq) - seqno) -+ ret = ((atomic_read_unchecked(&dev_priv->marker_seq) - seqno) - > VMW_FENCE_WRAP); - - return ret; -@@ -138,7 +138,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv, - - if (fifo_idle) - down_read(&fifo_state->rwsem); -- signal_seq = atomic_read(&dev_priv->marker_seq); -+ signal_seq = atomic_read_unchecked(&dev_priv->marker_seq); - ret = 0; - - for (;;) { -diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c -index 8a8725c..afed796 100644 ---- a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c -+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c -@@ -151,7 +151,7 @@ int vmw_wait_lag(struct vmw_private *dev_priv, - while (!vmw_lag_lt(queue, us)) { - spin_lock(&queue->lock); - if (list_empty(&queue->head)) -- seqno = atomic_read(&dev_priv->marker_seq); -+ seqno = atomic_read_unchecked(&dev_priv->marker_seq); - else { - marker = list_first_entry(&queue->head, - struct vmw_marker, head); -diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c -index 10ef742..9025b12 100644 ---- a/drivers/hid/hid-core.c -+++ b/drivers/hid/hid-core.c -@@ -2178,7 +2178,7 @@ static bool hid_ignore(struct hid_device *hdev) - - int hid_add_device(struct hid_device *hdev) - { -- static atomic_t id = ATOMIC_INIT(0); -+ static atomic_unchecked_t id = ATOMIC_INIT(0); - int ret; - - if (WARN_ON(hdev->status & HID_STAT_ADDED)) -@@ -2213,7 +2213,7 @@ int hid_add_device(struct hid_device *hdev) - /* XXX hack, any other cleaner solution after the driver core - * is converted to allow more than 20 bytes as the device name? */ - dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, -- hdev->vendor, hdev->product, atomic_inc_return(&id)); -+ hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id)); - - hid_debug_register(hdev, dev_name(&hdev->dev)); - ret = device_add(&hdev->dev); -diff --git a/drivers/hid/hid-wiimote-debug.c b/drivers/hid/hid-wiimote-debug.c -index eec3291..8ed706b 100644 ---- a/drivers/hid/hid-wiimote-debug.c -+++ b/drivers/hid/hid-wiimote-debug.c -@@ -66,7 +66,7 @@ static ssize_t wiidebug_eeprom_read(struct file *f, char __user *u, size_t s, - else if (size == 0) - return -EIO; - -- if (copy_to_user(u, buf, size)) -+ if (size > sizeof(buf) || copy_to_user(u, buf, size)) - return -EFAULT; - - *off += size; -diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c -index 14599e2..711c965 100644 ---- a/drivers/hid/usbhid/hiddev.c -+++ b/drivers/hid/usbhid/hiddev.c -@@ -625,7 +625,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) - break; - - case HIDIOCAPPLICATION: -- if (arg < 0 || arg >= hid->maxapplication) -+ if (arg >= hid->maxapplication) - break; - - for (i = 0; i < hid->maxcollection; i++) -diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c -index f4c3d28..82f45a9 100644 ---- a/drivers/hv/channel.c -+++ b/drivers/hv/channel.c -@@ -402,8 +402,8 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, - int ret = 0; - int t; - -- next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle); -- atomic_inc(&vmbus_connection.next_gpadl_handle); -+ next_gpadl_handle = atomic_read_unchecked(&vmbus_connection.next_gpadl_handle); -+ atomic_inc_unchecked(&vmbus_connection.next_gpadl_handle); - - ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount); - if (ret) -diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c -index 86f8885..ab9cb2b 100644 ---- a/drivers/hv/hv.c -+++ b/drivers/hv/hv.c -@@ -132,7 +132,7 @@ static u64 do_hypercall(u64 control, void *input, void *output) - u64 output_address = (output) ? virt_to_phys(output) : 0; - u32 output_address_hi = output_address >> 32; - u32 output_address_lo = output_address & 0xFFFFFFFF; -- void *hypercall_page = hv_context.hypercall_page; -+ void *hypercall_page = ktva_ktla(hv_context.hypercall_page); - - __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi), - "=a"(hv_status_lo) : "d" (control_hi), -diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h -index 0614ff3..f0b2b5c 100644 ---- a/drivers/hv/hyperv_vmbus.h -+++ b/drivers/hv/hyperv_vmbus.h -@@ -555,7 +555,7 @@ enum vmbus_connect_state { - struct vmbus_connection { - enum vmbus_connect_state conn_state; - -- atomic_t next_gpadl_handle; -+ atomic_unchecked_t next_gpadl_handle; - - /* - * Represents channel interrupts. Each bit position represents a -diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c -index 4748086..3abf845 100644 ---- a/drivers/hv/vmbus_drv.c -+++ b/drivers/hv/vmbus_drv.c -@@ -662,10 +662,10 @@ int vmbus_device_register(struct hv_device *child_device_obj) - { - int ret = 0; - -- static atomic_t device_num = ATOMIC_INIT(0); -+ static atomic_unchecked_t device_num = ATOMIC_INIT(0); - - dev_set_name(&child_device_obj->device, "vmbus_0_%d", -- atomic_inc_return(&device_num)); -+ atomic_inc_return_unchecked(&device_num)); - - child_device_obj->device.bus = &hv_bus; - child_device_obj->device.parent = &hv_acpi_dev->dev; -diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c -index 8b011d0..3de24a1 100644 ---- a/drivers/hwmon/sht15.c -+++ b/drivers/hwmon/sht15.c -@@ -166,7 +166,7 @@ struct sht15_data { - int supply_uV; - bool supply_uV_valid; - struct work_struct update_supply_work; -- atomic_t interrupt_handled; -+ atomic_unchecked_t interrupt_handled; - }; - - /** -@@ -509,13 +509,13 @@ static int sht15_measurement(struct sht15_data *data, - return ret; - - gpio_direction_input(data->pdata->gpio_data); -- atomic_set(&data->interrupt_handled, 0); -+ atomic_set_unchecked(&data->interrupt_handled, 0); - - enable_irq(gpio_to_irq(data->pdata->gpio_data)); - if (gpio_get_value(data->pdata->gpio_data) == 0) { - disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data)); - /* Only relevant if the interrupt hasn't occurred. */ -- if (!atomic_read(&data->interrupt_handled)) -+ if (!atomic_read_unchecked(&data->interrupt_handled)) - schedule_work(&data->read_work); - } - ret = wait_event_timeout(data->wait_queue, -@@ -782,7 +782,7 @@ static irqreturn_t sht15_interrupt_fired(int irq, void *d) - - /* First disable the interrupt */ - disable_irq_nosync(irq); -- atomic_inc(&data->interrupt_handled); -+ atomic_inc_unchecked(&data->interrupt_handled); - /* Then schedule a reading work struct */ - if (data->state != SHT15_READING_NOTHING) - schedule_work(&data->read_work); -@@ -804,11 +804,11 @@ static void sht15_bh_read_data(struct work_struct *work_s) - * If not, then start the interrupt again - care here as could - * have gone low in meantime so verify it hasn't! - */ -- atomic_set(&data->interrupt_handled, 0); -+ atomic_set_unchecked(&data->interrupt_handled, 0); - enable_irq(gpio_to_irq(data->pdata->gpio_data)); - /* If still not occurred or another handler was scheduled */ - if (gpio_get_value(data->pdata->gpio_data) -- || atomic_read(&data->interrupt_handled)) -+ || atomic_read_unchecked(&data->interrupt_handled)) - return; - } - -diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c -index 378fcb5..5e91fa8 100644 ---- a/drivers/i2c/busses/i2c-amd756-s4882.c -+++ b/drivers/i2c/busses/i2c-amd756-s4882.c -@@ -43,7 +43,7 @@ - extern struct i2c_adapter amd756_smbus; - - static struct i2c_adapter *s4882_adapter; --static struct i2c_algorithm *s4882_algo; -+static i2c_algorithm_no_const *s4882_algo; - - /* Wrapper access functions for multiplexed SMBus */ - static DEFINE_MUTEX(amd756_lock); -diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c -index 29015eb..af2d8e9 100644 ---- a/drivers/i2c/busses/i2c-nforce2-s4985.c -+++ b/drivers/i2c/busses/i2c-nforce2-s4985.c -@@ -41,7 +41,7 @@ - extern struct i2c_adapter *nforce2_smbus; - - static struct i2c_adapter *s4985_adapter; --static struct i2c_algorithm *s4985_algo; -+static i2c_algorithm_no_const *s4985_algo; - - /* Wrapper access functions for multiplexed SMBus */ - static DEFINE_MUTEX(nforce2_lock); -diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c -index 1038c38..eb92f51 100644 ---- a/drivers/i2c/i2c-mux.c -+++ b/drivers/i2c/i2c-mux.c -@@ -30,7 +30,7 @@ - /* multiplexer per channel data */ - struct i2c_mux_priv { - struct i2c_adapter adap; -- struct i2c_algorithm algo; -+ i2c_algorithm_no_const algo; - - struct i2c_adapter *parent; - void *mux_priv; /* the mux chip/device */ -diff --git a/drivers/ide/aec62xx.c b/drivers/ide/aec62xx.c -index 57d00ca..0145194 100644 ---- a/drivers/ide/aec62xx.c -+++ b/drivers/ide/aec62xx.c -@@ -181,7 +181,7 @@ static const struct ide_port_ops atp86x_port_ops = { - .cable_detect = atp86x_cable_detect, - }; - --static const struct ide_port_info aec62xx_chipsets[] __devinitdata = { -+static const struct ide_port_info aec62xx_chipsets[] __devinitconst = { - { /* 0: AEC6210 */ - .name = DRV_NAME, - .init_chipset = init_chipset_aec62xx, -diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c -index 2c8016a..911a27c 100644 ---- a/drivers/ide/alim15x3.c -+++ b/drivers/ide/alim15x3.c -@@ -512,7 +512,7 @@ static const struct ide_dma_ops ali_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info ali15x3_chipset __devinitdata = { -+static const struct ide_port_info ali15x3_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_ali15x3, - .init_hwif = init_hwif_ali15x3, -diff --git a/drivers/ide/amd74xx.c b/drivers/ide/amd74xx.c -index 3747b25..56fc995 100644 ---- a/drivers/ide/amd74xx.c -+++ b/drivers/ide/amd74xx.c -@@ -223,7 +223,7 @@ static const struct ide_port_ops amd_port_ops = { - .udma_mask = udma, \ - } - --static const struct ide_port_info amd74xx_chipsets[] __devinitdata = { -+static const struct ide_port_info amd74xx_chipsets[] __devinitconst = { - /* 0: AMD7401 */ DECLARE_AMD_DEV(0x00, ATA_UDMA2), - /* 1: AMD7409 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4), - /* 2: AMD7411/7441 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5), -diff --git a/drivers/ide/atiixp.c b/drivers/ide/atiixp.c -index 15f0ead..cb43480 100644 ---- a/drivers/ide/atiixp.c -+++ b/drivers/ide/atiixp.c -@@ -139,7 +139,7 @@ static const struct ide_port_ops atiixp_port_ops = { - .cable_detect = atiixp_cable_detect, - }; - --static const struct ide_port_info atiixp_pci_info[] __devinitdata = { -+static const struct ide_port_info atiixp_pci_info[] __devinitconst = { - { /* 0: IXP200/300/400/700 */ - .name = DRV_NAME, - .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, -diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c -index 5f80312..d1fc438 100644 ---- a/drivers/ide/cmd64x.c -+++ b/drivers/ide/cmd64x.c -@@ -327,7 +327,7 @@ static const struct ide_dma_ops cmd646_rev1_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info cmd64x_chipsets[] __devinitdata = { -+static const struct ide_port_info cmd64x_chipsets[] __devinitconst = { - { /* 0: CMD643 */ - .name = DRV_NAME, - .init_chipset = init_chipset_cmd64x, -diff --git a/drivers/ide/cs5520.c b/drivers/ide/cs5520.c -index 2c1e5f7..1444762 100644 ---- a/drivers/ide/cs5520.c -+++ b/drivers/ide/cs5520.c -@@ -94,7 +94,7 @@ static const struct ide_port_ops cs5520_port_ops = { - .set_dma_mode = cs5520_set_dma_mode, - }; - --static const struct ide_port_info cyrix_chipset __devinitdata = { -+static const struct ide_port_info cyrix_chipset __devinitconst = { - .name = DRV_NAME, - .enablebits = { { 0x60, 0x01, 0x01 }, { 0x60, 0x02, 0x02 } }, - .port_ops = &cs5520_port_ops, -diff --git a/drivers/ide/cs5530.c b/drivers/ide/cs5530.c -index 4dc4eb9..49b40ad 100644 ---- a/drivers/ide/cs5530.c -+++ b/drivers/ide/cs5530.c -@@ -245,7 +245,7 @@ static const struct ide_port_ops cs5530_port_ops = { - .udma_filter = cs5530_udma_filter, - }; - --static const struct ide_port_info cs5530_chipset __devinitdata = { -+static const struct ide_port_info cs5530_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_cs5530, - .init_hwif = init_hwif_cs5530, -diff --git a/drivers/ide/cs5535.c b/drivers/ide/cs5535.c -index 5059faf..18d4c85 100644 ---- a/drivers/ide/cs5535.c -+++ b/drivers/ide/cs5535.c -@@ -170,7 +170,7 @@ static const struct ide_port_ops cs5535_port_ops = { - .cable_detect = cs5535_cable_detect, - }; - --static const struct ide_port_info cs5535_chipset __devinitdata = { -+static const struct ide_port_info cs5535_chipset __devinitconst = { - .name = DRV_NAME, - .port_ops = &cs5535_port_ops, - .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE, -diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c -index 847553f..3ffb49d 100644 ---- a/drivers/ide/cy82c693.c -+++ b/drivers/ide/cy82c693.c -@@ -163,7 +163,7 @@ static const struct ide_port_ops cy82c693_port_ops = { - .set_dma_mode = cy82c693_set_dma_mode, - }; - --static const struct ide_port_info cy82c693_chipset __devinitdata = { -+static const struct ide_port_info cy82c693_chipset __devinitconst = { - .name = DRV_NAME, - .init_iops = init_iops_cy82c693, - .port_ops = &cy82c693_port_ops, -diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c -index 58c51cd..4aec3b8 100644 ---- a/drivers/ide/hpt366.c -+++ b/drivers/ide/hpt366.c -@@ -443,7 +443,7 @@ static struct hpt_timings hpt37x_timings = { - } - }; - --static const struct hpt_info hpt36x __devinitdata = { -+static const struct hpt_info hpt36x __devinitconst = { - .chip_name = "HPT36x", - .chip_type = HPT36x, - .udma_mask = HPT366_ALLOW_ATA66_3 ? (HPT366_ALLOW_ATA66_4 ? ATA_UDMA4 : ATA_UDMA3) : ATA_UDMA2, -@@ -451,7 +451,7 @@ static const struct hpt_info hpt36x __devinitdata = { - .timings = &hpt36x_timings - }; - --static const struct hpt_info hpt370 __devinitdata = { -+static const struct hpt_info hpt370 __devinitconst = { - .chip_name = "HPT370", - .chip_type = HPT370, - .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, -@@ -459,7 +459,7 @@ static const struct hpt_info hpt370 __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt370a __devinitdata = { -+static const struct hpt_info hpt370a __devinitconst = { - .chip_name = "HPT370A", - .chip_type = HPT370A, - .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, -@@ -467,7 +467,7 @@ static const struct hpt_info hpt370a __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt374 __devinitdata = { -+static const struct hpt_info hpt374 __devinitconst = { - .chip_name = "HPT374", - .chip_type = HPT374, - .udma_mask = ATA_UDMA5, -@@ -475,7 +475,7 @@ static const struct hpt_info hpt374 __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt372 __devinitdata = { -+static const struct hpt_info hpt372 __devinitconst = { - .chip_name = "HPT372", - .chip_type = HPT372, - .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -483,7 +483,7 @@ static const struct hpt_info hpt372 __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt372a __devinitdata = { -+static const struct hpt_info hpt372a __devinitconst = { - .chip_name = "HPT372A", - .chip_type = HPT372A, - .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -491,7 +491,7 @@ static const struct hpt_info hpt372a __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt302 __devinitdata = { -+static const struct hpt_info hpt302 __devinitconst = { - .chip_name = "HPT302", - .chip_type = HPT302, - .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -499,7 +499,7 @@ static const struct hpt_info hpt302 __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt371 __devinitdata = { -+static const struct hpt_info hpt371 __devinitconst = { - .chip_name = "HPT371", - .chip_type = HPT371, - .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -507,7 +507,7 @@ static const struct hpt_info hpt371 __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt372n __devinitdata = { -+static const struct hpt_info hpt372n __devinitconst = { - .chip_name = "HPT372N", - .chip_type = HPT372N, - .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -515,7 +515,7 @@ static const struct hpt_info hpt372n __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt302n __devinitdata = { -+static const struct hpt_info hpt302n __devinitconst = { - .chip_name = "HPT302N", - .chip_type = HPT302N, - .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -523,7 +523,7 @@ static const struct hpt_info hpt302n __devinitdata = { - .timings = &hpt37x_timings - }; - --static const struct hpt_info hpt371n __devinitdata = { -+static const struct hpt_info hpt371n __devinitconst = { - .chip_name = "HPT371N", - .chip_type = HPT371N, - .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, -@@ -1361,7 +1361,7 @@ static const struct ide_dma_ops hpt36x_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info hpt366_chipsets[] __devinitdata = { -+static const struct ide_port_info hpt366_chipsets[] __devinitconst = { - { /* 0: HPT36x */ - .name = DRV_NAME, - .init_chipset = init_chipset_hpt366, -diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c -index 8126824..55a2798 100644 ---- a/drivers/ide/ide-cd.c -+++ b/drivers/ide/ide-cd.c -@@ -768,7 +768,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) - alignment = queue_dma_alignment(q) | q->dma_pad_mask; - if ((unsigned long)buf & alignment - || blk_rq_bytes(rq) & q->dma_pad_mask -- || object_is_on_stack(buf)) -+ || object_starts_on_stack(buf)) - drive->dma = 0; - } - } -diff --git a/drivers/ide/ide-pci-generic.c b/drivers/ide/ide-pci-generic.c -index 7f56b73..dab5b67 100644 ---- a/drivers/ide/ide-pci-generic.c -+++ b/drivers/ide/ide-pci-generic.c -@@ -53,7 +53,7 @@ static const struct ide_port_ops netcell_port_ops = { - .udma_mask = ATA_UDMA6, \ - } - --static const struct ide_port_info generic_chipsets[] __devinitdata = { -+static const struct ide_port_info generic_chipsets[] __devinitconst = { - /* 0: Unknown */ - DECLARE_GENERIC_PCI_DEV(0), - -diff --git a/drivers/ide/it8172.c b/drivers/ide/it8172.c -index 560e66d..d5dd180 100644 ---- a/drivers/ide/it8172.c -+++ b/drivers/ide/it8172.c -@@ -115,7 +115,7 @@ static const struct ide_port_ops it8172_port_ops = { - .set_dma_mode = it8172_set_dma_mode, - }; - --static const struct ide_port_info it8172_port_info __devinitdata = { -+static const struct ide_port_info it8172_port_info __devinitconst = { - .name = DRV_NAME, - .port_ops = &it8172_port_ops, - .enablebits = { {0x41, 0x80, 0x80}, {0x00, 0x00, 0x00} }, -diff --git a/drivers/ide/it8213.c b/drivers/ide/it8213.c -index 46816ba..1847aeb 100644 ---- a/drivers/ide/it8213.c -+++ b/drivers/ide/it8213.c -@@ -156,7 +156,7 @@ static const struct ide_port_ops it8213_port_ops = { - .cable_detect = it8213_cable_detect, - }; - --static const struct ide_port_info it8213_chipset __devinitdata = { -+static const struct ide_port_info it8213_chipset __devinitconst = { - .name = DRV_NAME, - .enablebits = { {0x41, 0x80, 0x80} }, - .port_ops = &it8213_port_ops, -diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c -index 2e3169f..c5611db 100644 ---- a/drivers/ide/it821x.c -+++ b/drivers/ide/it821x.c -@@ -630,7 +630,7 @@ static const struct ide_port_ops it821x_port_ops = { - .cable_detect = it821x_cable_detect, - }; - --static const struct ide_port_info it821x_chipset __devinitdata = { -+static const struct ide_port_info it821x_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_it821x, - .init_hwif = init_hwif_it821x, -diff --git a/drivers/ide/jmicron.c b/drivers/ide/jmicron.c -index 74c2c4a..efddd7d 100644 ---- a/drivers/ide/jmicron.c -+++ b/drivers/ide/jmicron.c -@@ -102,7 +102,7 @@ static const struct ide_port_ops jmicron_port_ops = { - .cable_detect = jmicron_cable_detect, - }; - --static const struct ide_port_info jmicron_chipset __devinitdata = { -+static const struct ide_port_info jmicron_chipset __devinitconst = { - .name = DRV_NAME, - .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, - .port_ops = &jmicron_port_ops, -diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c -index 95327a2..73f78d8 100644 ---- a/drivers/ide/ns87415.c -+++ b/drivers/ide/ns87415.c -@@ -293,7 +293,7 @@ static const struct ide_dma_ops ns87415_dma_ops = { - .dma_sff_read_status = superio_dma_sff_read_status, - }; - --static const struct ide_port_info ns87415_chipset __devinitdata = { -+static const struct ide_port_info ns87415_chipset __devinitconst = { - .name = DRV_NAME, - .init_hwif = init_hwif_ns87415, - .tp_ops = &ns87415_tp_ops, -diff --git a/drivers/ide/opti621.c b/drivers/ide/opti621.c -index 1a53a4c..39edc66 100644 ---- a/drivers/ide/opti621.c -+++ b/drivers/ide/opti621.c -@@ -131,7 +131,7 @@ static const struct ide_port_ops opti621_port_ops = { - .set_pio_mode = opti621_set_pio_mode, - }; - --static const struct ide_port_info opti621_chipset __devinitdata = { -+static const struct ide_port_info opti621_chipset __devinitconst = { - .name = DRV_NAME, - .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, - .port_ops = &opti621_port_ops, -diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c -index 9546fe2..2e5ceb6 100644 ---- a/drivers/ide/pdc202xx_new.c -+++ b/drivers/ide/pdc202xx_new.c -@@ -465,7 +465,7 @@ static const struct ide_port_ops pdcnew_port_ops = { - .udma_mask = udma, \ - } - --static const struct ide_port_info pdcnew_chipsets[] __devinitdata = { -+static const struct ide_port_info pdcnew_chipsets[] __devinitconst = { - /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5), - /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6), - }; -diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c -index 3a35ec6..5634510 100644 ---- a/drivers/ide/pdc202xx_old.c -+++ b/drivers/ide/pdc202xx_old.c -@@ -270,7 +270,7 @@ static const struct ide_dma_ops pdc2026x_dma_ops = { - .max_sectors = sectors, \ - } - --static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { -+static const struct ide_port_info pdc202xx_chipsets[] __devinitconst = { - { /* 0: PDC20246 */ - .name = DRV_NAME, - .init_chipset = init_chipset_pdc202xx, -diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c -index 1892e81..fe0fd60 100644 ---- a/drivers/ide/piix.c -+++ b/drivers/ide/piix.c -@@ -344,7 +344,7 @@ static const struct ide_port_ops ich_port_ops = { - .udma_mask = udma, \ - } - --static const struct ide_port_info piix_pci_info[] __devinitdata = { -+static const struct ide_port_info piix_pci_info[] __devinitconst = { - /* 0: MPIIX */ - { /* - * MPIIX actually has only a single IDE channel mapped to -diff --git a/drivers/ide/rz1000.c b/drivers/ide/rz1000.c -index a6414a8..c04173e 100644 ---- a/drivers/ide/rz1000.c -+++ b/drivers/ide/rz1000.c -@@ -38,7 +38,7 @@ static int __devinit rz1000_disable_readahead(struct pci_dev *dev) - } - } - --static const struct ide_port_info rz1000_chipset __devinitdata = { -+static const struct ide_port_info rz1000_chipset __devinitconst = { - .name = DRV_NAME, - .host_flags = IDE_HFLAG_NO_DMA, - }; -diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c -index 356b9b5..d4758eb 100644 ---- a/drivers/ide/sc1200.c -+++ b/drivers/ide/sc1200.c -@@ -291,7 +291,7 @@ static const struct ide_dma_ops sc1200_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info sc1200_chipset __devinitdata = { -+static const struct ide_port_info sc1200_chipset __devinitconst = { - .name = DRV_NAME, - .port_ops = &sc1200_port_ops, - .dma_ops = &sc1200_dma_ops, -diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c -index b7f5b0c..9701038 100644 ---- a/drivers/ide/scc_pata.c -+++ b/drivers/ide/scc_pata.c -@@ -811,7 +811,7 @@ static const struct ide_dma_ops scc_dma_ops = { - .dma_sff_read_status = scc_dma_sff_read_status, - }; - --static const struct ide_port_info scc_chipset __devinitdata = { -+static const struct ide_port_info scc_chipset __devinitconst = { - .name = "sccIDE", - .init_iops = init_iops_scc, - .init_dma = scc_init_dma, -diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c -index 35fb8da..24d72ef 100644 ---- a/drivers/ide/serverworks.c -+++ b/drivers/ide/serverworks.c -@@ -337,7 +337,7 @@ static const struct ide_port_ops svwks_port_ops = { - .cable_detect = svwks_cable_detect, - }; - --static const struct ide_port_info serverworks_chipsets[] __devinitdata = { -+static const struct ide_port_info serverworks_chipsets[] __devinitconst = { - { /* 0: OSB4 */ - .name = DRV_NAME, - .init_chipset = init_chipset_svwks, -diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c -index ddeda44..46f7e30 100644 ---- a/drivers/ide/siimage.c -+++ b/drivers/ide/siimage.c -@@ -719,7 +719,7 @@ static const struct ide_dma_ops sil_dma_ops = { - .udma_mask = ATA_UDMA6, \ - } - --static const struct ide_port_info siimage_chipsets[] __devinitdata = { -+static const struct ide_port_info siimage_chipsets[] __devinitconst = { - /* 0: SiI680 */ DECLARE_SII_DEV(&sil_pata_port_ops), - /* 1: SiI3112 */ DECLARE_SII_DEV(&sil_sata_port_ops) - }; -diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c -index 4a00225..09e61b4 100644 ---- a/drivers/ide/sis5513.c -+++ b/drivers/ide/sis5513.c -@@ -563,7 +563,7 @@ static const struct ide_port_ops sis_ata133_port_ops = { - .cable_detect = sis_cable_detect, - }; - --static const struct ide_port_info sis5513_chipset __devinitdata = { -+static const struct ide_port_info sis5513_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_sis5513, - .enablebits = { {0x4a, 0x02, 0x02}, {0x4a, 0x04, 0x04} }, -diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c -index f21dc2a..d051cd2 100644 ---- a/drivers/ide/sl82c105.c -+++ b/drivers/ide/sl82c105.c -@@ -299,7 +299,7 @@ static const struct ide_dma_ops sl82c105_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info sl82c105_chipset __devinitdata = { -+static const struct ide_port_info sl82c105_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_sl82c105, - .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, -diff --git a/drivers/ide/slc90e66.c b/drivers/ide/slc90e66.c -index 864ffe0..863a5e9 100644 ---- a/drivers/ide/slc90e66.c -+++ b/drivers/ide/slc90e66.c -@@ -132,7 +132,7 @@ static const struct ide_port_ops slc90e66_port_ops = { - .cable_detect = slc90e66_cable_detect, - }; - --static const struct ide_port_info slc90e66_chipset __devinitdata = { -+static const struct ide_port_info slc90e66_chipset __devinitconst = { - .name = DRV_NAME, - .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, - .port_ops = &slc90e66_port_ops, -diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c -index 4799d5c..1794678 100644 ---- a/drivers/ide/tc86c001.c -+++ b/drivers/ide/tc86c001.c -@@ -192,7 +192,7 @@ static const struct ide_dma_ops tc86c001_dma_ops = { - .dma_sff_read_status = ide_dma_sff_read_status, - }; - --static const struct ide_port_info tc86c001_chipset __devinitdata = { -+static const struct ide_port_info tc86c001_chipset __devinitconst = { - .name = DRV_NAME, - .init_hwif = init_hwif_tc86c001, - .port_ops = &tc86c001_port_ops, -diff --git a/drivers/ide/triflex.c b/drivers/ide/triflex.c -index 281c914..55ce1b8 100644 ---- a/drivers/ide/triflex.c -+++ b/drivers/ide/triflex.c -@@ -92,7 +92,7 @@ static const struct ide_port_ops triflex_port_ops = { - .set_dma_mode = triflex_set_mode, - }; - --static const struct ide_port_info triflex_device __devinitdata = { -+static const struct ide_port_info triflex_device __devinitconst = { - .name = DRV_NAME, - .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, - .port_ops = &triflex_port_ops, -diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c -index 4b42ca0..e494a98 100644 ---- a/drivers/ide/trm290.c -+++ b/drivers/ide/trm290.c -@@ -324,7 +324,7 @@ static struct ide_dma_ops trm290_dma_ops = { - .dma_check = trm290_dma_check, - }; - --static const struct ide_port_info trm290_chipset __devinitdata = { -+static const struct ide_port_info trm290_chipset __devinitconst = { - .name = DRV_NAME, - .init_hwif = init_hwif_trm290, - .tp_ops = &trm290_tp_ops, -diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c -index f46f49c..eb77678 100644 ---- a/drivers/ide/via82cxxx.c -+++ b/drivers/ide/via82cxxx.c -@@ -403,7 +403,7 @@ static const struct ide_port_ops via_port_ops = { - .cable_detect = via82cxxx_cable_detect, - }; - --static const struct ide_port_info via82cxxx_chipset __devinitdata = { -+static const struct ide_port_info via82cxxx_chipset __devinitconst = { - .name = DRV_NAME, - .init_chipset = init_chipset_via82cxxx, - .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } }, -diff --git a/drivers/ieee802154/fakehard.c b/drivers/ieee802154/fakehard.c -index 73d4531..c90cd2d 100644 ---- a/drivers/ieee802154/fakehard.c -+++ b/drivers/ieee802154/fakehard.c -@@ -386,7 +386,7 @@ static int __devinit ieee802154fake_probe(struct platform_device *pdev) - phy->transmit_power = 0xbf; - - dev->netdev_ops = &fake_ops; -- dev->ml_priv = &fake_mlme; -+ dev->ml_priv = (void *)&fake_mlme; - - priv = netdev_priv(dev); - priv->phy = phy; -diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c -index d67999f..4c5d083 100644 ---- a/drivers/infiniband/core/cm.c -+++ b/drivers/infiniband/core/cm.c -@@ -114,7 +114,7 @@ static char const counter_group_names[CM_COUNTER_GROUPS] - - struct cm_counter_group { - struct kobject obj; -- atomic_long_t counter[CM_ATTR_COUNT]; -+ atomic_long_unchecked_t counter[CM_ATTR_COUNT]; - }; - - struct cm_counter_attribute { -@@ -1394,7 +1394,7 @@ static void cm_dup_req_handler(struct cm_work *work, - struct ib_mad_send_buf *msg = NULL; - int ret; - -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_REQ_COUNTER]); - - /* Quick state check to discard duplicate REQs. */ -@@ -1778,7 +1778,7 @@ static void cm_dup_rep_handler(struct cm_work *work) - if (!cm_id_priv) - return; - -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_REP_COUNTER]); - ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg); - if (ret) -@@ -1945,7 +1945,7 @@ static int cm_rtu_handler(struct cm_work *work) - if (cm_id_priv->id.state != IB_CM_REP_SENT && - cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) { - spin_unlock_irq(&cm_id_priv->lock); -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_RTU_COUNTER]); - goto out; - } -@@ -2128,7 +2128,7 @@ static int cm_dreq_handler(struct cm_work *work) - cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id, - dreq_msg->local_comm_id); - if (!cm_id_priv) { -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_DREQ_COUNTER]); - cm_issue_drep(work->port, work->mad_recv_wc); - return -EINVAL; -@@ -2153,7 +2153,7 @@ static int cm_dreq_handler(struct cm_work *work) - case IB_CM_MRA_REP_RCVD: - break; - case IB_CM_TIMEWAIT: -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_DREQ_COUNTER]); - if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) - goto unlock; -@@ -2167,7 +2167,7 @@ static int cm_dreq_handler(struct cm_work *work) - cm_free_msg(msg); - goto deref; - case IB_CM_DREQ_RCVD: -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_DREQ_COUNTER]); - goto unlock; - default: -@@ -2534,7 +2534,7 @@ static int cm_mra_handler(struct cm_work *work) - ib_modify_mad(cm_id_priv->av.port->mad_agent, - cm_id_priv->msg, timeout)) { - if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD) -- atomic_long_inc(&work->port-> -+ atomic_long_inc_unchecked(&work->port-> - counter_group[CM_RECV_DUPLICATES]. - counter[CM_MRA_COUNTER]); - goto out; -@@ -2543,7 +2543,7 @@ static int cm_mra_handler(struct cm_work *work) - break; - case IB_CM_MRA_REQ_RCVD: - case IB_CM_MRA_REP_RCVD: -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_MRA_COUNTER]); - /* fall through */ - default: -@@ -2705,7 +2705,7 @@ static int cm_lap_handler(struct cm_work *work) - case IB_CM_LAP_IDLE: - break; - case IB_CM_MRA_LAP_SENT: -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_LAP_COUNTER]); - if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) - goto unlock; -@@ -2721,7 +2721,7 @@ static int cm_lap_handler(struct cm_work *work) - cm_free_msg(msg); - goto deref; - case IB_CM_LAP_RCVD: -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_LAP_COUNTER]); - goto unlock; - default: -@@ -3005,7 +3005,7 @@ static int cm_sidr_req_handler(struct cm_work *work) - cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv); - if (cur_cm_id_priv) { - spin_unlock_irq(&cm.lock); -- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. -+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. - counter[CM_SIDR_REQ_COUNTER]); - goto out; /* Duplicate message. */ - } -@@ -3217,10 +3217,10 @@ static void cm_send_handler(struct ib_mad_agent *mad_agent, - if (!msg->context[0] && (attr_index != CM_REJ_COUNTER)) - msg->retries = 1; - -- atomic_long_add(1 + msg->retries, -+ atomic_long_add_unchecked(1 + msg->retries, - &port->counter_group[CM_XMIT].counter[attr_index]); - if (msg->retries) -- atomic_long_add(msg->retries, -+ atomic_long_add_unchecked(msg->retries, - &port->counter_group[CM_XMIT_RETRIES]. - counter[attr_index]); - -@@ -3430,7 +3430,7 @@ static void cm_recv_handler(struct ib_mad_agent *mad_agent, - } - - attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id); -- atomic_long_inc(&port->counter_group[CM_RECV]. -+ atomic_long_inc_unchecked(&port->counter_group[CM_RECV]. - counter[attr_id - CM_ATTR_ID_OFFSET]); - - work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths, -@@ -3635,7 +3635,7 @@ static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr, - cm_attr = container_of(attr, struct cm_counter_attribute, attr); - - return sprintf(buf, "%ld\n", -- atomic_long_read(&group->counter[cm_attr->index])); -+ atomic_long_read_unchecked(&group->counter[cm_attr->index])); - } - - static const struct sysfs_ops cm_counter_ops = { -diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c -index 176c8f9..2627b62 100644 ---- a/drivers/infiniband/core/fmr_pool.c -+++ b/drivers/infiniband/core/fmr_pool.c -@@ -98,8 +98,8 @@ struct ib_fmr_pool { - - struct task_struct *thread; - -- atomic_t req_ser; -- atomic_t flush_ser; -+ atomic_unchecked_t req_ser; -+ atomic_unchecked_t flush_ser; - - wait_queue_head_t force_wait; - }; -@@ -180,10 +180,10 @@ static int ib_fmr_cleanup_thread(void *pool_ptr) - struct ib_fmr_pool *pool = pool_ptr; - - do { -- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0) { -+ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) < 0) { - ib_fmr_batch_release(pool); - -- atomic_inc(&pool->flush_ser); -+ atomic_inc_unchecked(&pool->flush_ser); - wake_up_interruptible(&pool->force_wait); - - if (pool->flush_function) -@@ -191,7 +191,7 @@ static int ib_fmr_cleanup_thread(void *pool_ptr) - } - - set_current_state(TASK_INTERRUPTIBLE); -- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) >= 0 && -+ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) >= 0 && - !kthread_should_stop()) - schedule(); - __set_current_state(TASK_RUNNING); -@@ -283,8 +283,8 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, - pool->dirty_watermark = params->dirty_watermark; - pool->dirty_len = 0; - spin_lock_init(&pool->pool_lock); -- atomic_set(&pool->req_ser, 0); -- atomic_set(&pool->flush_ser, 0); -+ atomic_set_unchecked(&pool->req_ser, 0); -+ atomic_set_unchecked(&pool->flush_ser, 0); - init_waitqueue_head(&pool->force_wait); - - pool->thread = kthread_run(ib_fmr_cleanup_thread, -@@ -412,11 +412,11 @@ int ib_flush_fmr_pool(struct ib_fmr_pool *pool) - } - spin_unlock_irq(&pool->pool_lock); - -- serial = atomic_inc_return(&pool->req_ser); -+ serial = atomic_inc_return_unchecked(&pool->req_ser); - wake_up_process(pool->thread); - - if (wait_event_interruptible(pool->force_wait, -- atomic_read(&pool->flush_ser) - serial >= 0)) -+ atomic_read_unchecked(&pool->flush_ser) - serial >= 0)) - return -EINTR; - - return 0; -@@ -526,7 +526,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr) - } else { - list_add_tail(&fmr->list, &pool->dirty_list); - if (++pool->dirty_len >= pool->dirty_watermark) { -- atomic_inc(&pool->req_ser); -+ atomic_inc_unchecked(&pool->req_ser); - wake_up_process(pool->thread); - } - } -diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c -index 57e07c6..56d09d4 100644 ---- a/drivers/infiniband/hw/cxgb4/mem.c -+++ b/drivers/infiniband/hw/cxgb4/mem.c -@@ -122,7 +122,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry, - int err; - struct fw_ri_tpte tpt; - u32 stag_idx; -- static atomic_t key; -+ static atomic_unchecked_t key; - - if (c4iw_fatal_error(rdev)) - return -EIO; -@@ -139,7 +139,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry, - if (rdev->stats.stag.cur > rdev->stats.stag.max) - rdev->stats.stag.max = rdev->stats.stag.cur; - mutex_unlock(&rdev->stats.lock); -- *stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff); -+ *stag = (stag_idx << 8) | (atomic_inc_return_unchecked(&key) & 0xff); - } - PDBG("%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x\n", - __func__, stag_state, type, pdid, stag_idx); -diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c -index 79b3dbc..96e5fcc 100644 ---- a/drivers/infiniband/hw/ipath/ipath_rc.c -+++ b/drivers/infiniband/hw/ipath/ipath_rc.c -@@ -1868,7 +1868,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - struct ib_atomic_eth *ateth; - struct ipath_ack_entry *e; - u64 vaddr; -- atomic64_t *maddr; -+ atomic64_unchecked_t *maddr; - u64 sdata; - u32 rkey; - u8 next; -@@ -1903,11 +1903,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, - IB_ACCESS_REMOTE_ATOMIC))) - goto nack_acc_unlck; - /* Perform atomic OP and save result. */ -- maddr = (atomic64_t *) qp->r_sge.sge.vaddr; -+ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr; - sdata = be64_to_cpu(ateth->swap_data); - e = &qp->s_ack_queue[qp->r_head_ack_queue]; - e->atomic_data = (opcode == OP(FETCH_ADD)) ? -- (u64) atomic64_add_return(sdata, maddr) - sdata : -+ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata : - (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, - be64_to_cpu(ateth->compare_data), - sdata); -diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c -index 1f95bba..9530f87 100644 ---- a/drivers/infiniband/hw/ipath/ipath_ruc.c -+++ b/drivers/infiniband/hw/ipath/ipath_ruc.c -@@ -266,7 +266,7 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp) - unsigned long flags; - struct ib_wc wc; - u64 sdata; -- atomic64_t *maddr; -+ atomic64_unchecked_t *maddr; - enum ib_wc_status send_status; - - /* -@@ -382,11 +382,11 @@ again: - IB_ACCESS_REMOTE_ATOMIC))) - goto acc_err; - /* Perform atomic OP and save result. */ -- maddr = (atomic64_t *) qp->r_sge.sge.vaddr; -+ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr; - sdata = wqe->wr.wr.atomic.compare_add; - *(u64 *) sqp->s_sge.sge.vaddr = - (wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ? -- (u64) atomic64_add_return(sdata, maddr) - sdata : -+ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata : - (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, - sdata, wqe->wr.wr.atomic.swap); - goto send_comp; -diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c -index 7140199..da60063 100644 ---- a/drivers/infiniband/hw/nes/nes.c -+++ b/drivers/infiniband/hw/nes/nes.c -@@ -103,7 +103,7 @@ MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes"); - LIST_HEAD(nes_adapter_list); - static LIST_HEAD(nes_dev_list); - --atomic_t qps_destroyed; -+atomic_unchecked_t qps_destroyed; - - static unsigned int ee_flsh_adapter; - static unsigned int sysfs_nonidx_addr; -@@ -272,7 +272,7 @@ static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_r - struct nes_qp *nesqp = cqp_request->cqp_callback_pointer; - struct nes_adapter *nesadapter = nesdev->nesadapter; - -- atomic_inc(&qps_destroyed); -+ atomic_inc_unchecked(&qps_destroyed); - - /* Free the control structures */ - -diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h -index 3f41d9f..69cfea7 100644 ---- a/drivers/infiniband/hw/nes/nes.h -+++ b/drivers/infiniband/hw/nes/nes.h -@@ -178,17 +178,17 @@ extern unsigned int nes_debug_level; - extern unsigned int wqm_quanta; - extern struct list_head nes_adapter_list; - --extern atomic_t cm_connects; --extern atomic_t cm_accepts; --extern atomic_t cm_disconnects; --extern atomic_t cm_closes; --extern atomic_t cm_connecteds; --extern atomic_t cm_connect_reqs; --extern atomic_t cm_rejects; --extern atomic_t mod_qp_timouts; --extern atomic_t qps_created; --extern atomic_t qps_destroyed; --extern atomic_t sw_qps_destroyed; -+extern atomic_unchecked_t cm_connects; -+extern atomic_unchecked_t cm_accepts; -+extern atomic_unchecked_t cm_disconnects; -+extern atomic_unchecked_t cm_closes; -+extern atomic_unchecked_t cm_connecteds; -+extern atomic_unchecked_t cm_connect_reqs; -+extern atomic_unchecked_t cm_rejects; -+extern atomic_unchecked_t mod_qp_timouts; -+extern atomic_unchecked_t qps_created; -+extern atomic_unchecked_t qps_destroyed; -+extern atomic_unchecked_t sw_qps_destroyed; - extern u32 mh_detected; - extern u32 mh_pauses_sent; - extern u32 cm_packets_sent; -@@ -197,16 +197,16 @@ extern u32 cm_packets_created; - extern u32 cm_packets_received; - extern u32 cm_packets_dropped; - extern u32 cm_packets_retrans; --extern atomic_t cm_listens_created; --extern atomic_t cm_listens_destroyed; -+extern atomic_unchecked_t cm_listens_created; -+extern atomic_unchecked_t cm_listens_destroyed; - extern u32 cm_backlog_drops; --extern atomic_t cm_loopbacks; --extern atomic_t cm_nodes_created; --extern atomic_t cm_nodes_destroyed; --extern atomic_t cm_accel_dropped_pkts; --extern atomic_t cm_resets_recvd; --extern atomic_t pau_qps_created; --extern atomic_t pau_qps_destroyed; -+extern atomic_unchecked_t cm_loopbacks; -+extern atomic_unchecked_t cm_nodes_created; -+extern atomic_unchecked_t cm_nodes_destroyed; -+extern atomic_unchecked_t cm_accel_dropped_pkts; -+extern atomic_unchecked_t cm_resets_recvd; -+extern atomic_unchecked_t pau_qps_created; -+extern atomic_unchecked_t pau_qps_destroyed; - - extern u32 int_mod_timer_init; - extern u32 int_mod_cq_depth_256; -diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c -index 020e95c..fbb3450 100644 ---- a/drivers/infiniband/hw/nes/nes_cm.c -+++ b/drivers/infiniband/hw/nes/nes_cm.c -@@ -68,14 +68,14 @@ u32 cm_packets_dropped; - u32 cm_packets_retrans; - u32 cm_packets_created; - u32 cm_packets_received; --atomic_t cm_listens_created; --atomic_t cm_listens_destroyed; -+atomic_unchecked_t cm_listens_created; -+atomic_unchecked_t cm_listens_destroyed; - u32 cm_backlog_drops; --atomic_t cm_loopbacks; --atomic_t cm_nodes_created; --atomic_t cm_nodes_destroyed; --atomic_t cm_accel_dropped_pkts; --atomic_t cm_resets_recvd; -+atomic_unchecked_t cm_loopbacks; -+atomic_unchecked_t cm_nodes_created; -+atomic_unchecked_t cm_nodes_destroyed; -+atomic_unchecked_t cm_accel_dropped_pkts; -+atomic_unchecked_t cm_resets_recvd; - - static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); - static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); -@@ -148,13 +148,13 @@ static struct nes_cm_ops nes_cm_api = { - - static struct nes_cm_core *g_cm_core; - --atomic_t cm_connects; --atomic_t cm_accepts; --atomic_t cm_disconnects; --atomic_t cm_closes; --atomic_t cm_connecteds; --atomic_t cm_connect_reqs; --atomic_t cm_rejects; -+atomic_unchecked_t cm_connects; -+atomic_unchecked_t cm_accepts; -+atomic_unchecked_t cm_disconnects; -+atomic_unchecked_t cm_closes; -+atomic_unchecked_t cm_connecteds; -+atomic_unchecked_t cm_connect_reqs; -+atomic_unchecked_t cm_rejects; - - int nes_add_ref_cm_node(struct nes_cm_node *cm_node) - { -@@ -1279,7 +1279,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, - kfree(listener); - listener = NULL; - ret = 0; -- atomic_inc(&cm_listens_destroyed); -+ atomic_inc_unchecked(&cm_listens_destroyed); - } else { - spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); - } -@@ -1482,7 +1482,7 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, - cm_node->rem_mac); - - add_hte_node(cm_core, cm_node); -- atomic_inc(&cm_nodes_created); -+ atomic_inc_unchecked(&cm_nodes_created); - - return cm_node; - } -@@ -1540,7 +1540,7 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core, - } - - atomic_dec(&cm_core->node_cnt); -- atomic_inc(&cm_nodes_destroyed); -+ atomic_inc_unchecked(&cm_nodes_destroyed); - nesqp = cm_node->nesqp; - if (nesqp) { - nesqp->cm_node = NULL; -@@ -1604,7 +1604,7 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, - - static void drop_packet(struct sk_buff *skb) - { -- atomic_inc(&cm_accel_dropped_pkts); -+ atomic_inc_unchecked(&cm_accel_dropped_pkts); - dev_kfree_skb_any(skb); - } - -@@ -1667,7 +1667,7 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, - { - - int reset = 0; /* whether to send reset in case of err.. */ -- atomic_inc(&cm_resets_recvd); -+ atomic_inc_unchecked(&cm_resets_recvd); - nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." - " refcnt=%d\n", cm_node, cm_node->state, - atomic_read(&cm_node->ref_count)); -@@ -2308,7 +2308,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, - rem_ref_cm_node(cm_node->cm_core, cm_node); - return NULL; - } -- atomic_inc(&cm_loopbacks); -+ atomic_inc_unchecked(&cm_loopbacks); - loopbackremotenode->loopbackpartner = cm_node; - loopbackremotenode->tcp_cntxt.rcv_wscale = - NES_CM_DEFAULT_RCV_WND_SCALE; -@@ -2583,7 +2583,7 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, - nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); - else { - rem_ref_cm_node(cm_core, cm_node); -- atomic_inc(&cm_accel_dropped_pkts); -+ atomic_inc_unchecked(&cm_accel_dropped_pkts); - dev_kfree_skb_any(skb); - } - break; -@@ -2891,7 +2891,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) - - if ((cm_id) && (cm_id->event_handler)) { - if (issue_disconn) { -- atomic_inc(&cm_disconnects); -+ atomic_inc_unchecked(&cm_disconnects); - cm_event.event = IW_CM_EVENT_DISCONNECT; - cm_event.status = disconn_status; - cm_event.local_addr = cm_id->local_addr; -@@ -2913,7 +2913,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) - } - - if (issue_close) { -- atomic_inc(&cm_closes); -+ atomic_inc_unchecked(&cm_closes); - nes_disconnect(nesqp, 1); - - cm_id->provider_data = nesqp; -@@ -3049,7 +3049,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) - - nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", - nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); -- atomic_inc(&cm_accepts); -+ atomic_inc_unchecked(&cm_accepts); - - nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", - netdev_refcnt_read(nesvnic->netdev)); -@@ -3251,7 +3251,7 @@ int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) - struct nes_cm_core *cm_core; - u8 *start_buff; - -- atomic_inc(&cm_rejects); -+ atomic_inc_unchecked(&cm_rejects); - cm_node = (struct nes_cm_node *)cm_id->provider_data; - loopback = cm_node->loopbackpartner; - cm_core = cm_node->cm_core; -@@ -3311,7 +3311,7 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) - ntohl(cm_id->local_addr.sin_addr.s_addr), - ntohs(cm_id->local_addr.sin_port)); - -- atomic_inc(&cm_connects); -+ atomic_inc_unchecked(&cm_connects); - nesqp->active_conn = 1; - - /* cache the cm_id in the qp */ -@@ -3421,7 +3421,7 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog) - g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); - return err; - } -- atomic_inc(&cm_listens_created); -+ atomic_inc_unchecked(&cm_listens_created); - } - - cm_id->add_ref(cm_id); -@@ -3522,7 +3522,7 @@ static void cm_event_connected(struct nes_cm_event *event) - - if (nesqp->destroyed) - return; -- atomic_inc(&cm_connecteds); -+ atomic_inc_unchecked(&cm_connecteds); - nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" - " local port 0x%04X. jiffies = %lu.\n", - nesqp->hwqp.qp_id, -@@ -3709,7 +3709,7 @@ static void cm_event_reset(struct nes_cm_event *event) - - cm_id->add_ref(cm_id); - ret = cm_id->event_handler(cm_id, &cm_event); -- atomic_inc(&cm_closes); -+ atomic_inc_unchecked(&cm_closes); - cm_event.event = IW_CM_EVENT_CLOSE; - cm_event.status = 0; - cm_event.provider_data = cm_id->provider_data; -@@ -3745,7 +3745,7 @@ static void cm_event_mpa_req(struct nes_cm_event *event) - return; - cm_id = cm_node->cm_id; - -- atomic_inc(&cm_connect_reqs); -+ atomic_inc_unchecked(&cm_connect_reqs); - nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", - cm_node, cm_id, jiffies); - -@@ -3785,7 +3785,7 @@ static void cm_event_mpa_reject(struct nes_cm_event *event) - return; - cm_id = cm_node->cm_id; - -- atomic_inc(&cm_connect_reqs); -+ atomic_inc_unchecked(&cm_connect_reqs); - nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", - cm_node, cm_id, jiffies); - -diff --git a/drivers/infiniband/hw/nes/nes_mgt.c b/drivers/infiniband/hw/nes/nes_mgt.c -index 3ba7be3..c81f6ff 100644 ---- a/drivers/infiniband/hw/nes/nes_mgt.c -+++ b/drivers/infiniband/hw/nes/nes_mgt.c -@@ -40,8 +40,8 @@ - #include "nes.h" - #include "nes_mgt.h" - --atomic_t pau_qps_created; --atomic_t pau_qps_destroyed; -+atomic_unchecked_t pau_qps_created; -+atomic_unchecked_t pau_qps_destroyed; - - static void nes_replenish_mgt_rq(struct nes_vnic_mgt *mgtvnic) - { -@@ -621,7 +621,7 @@ void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp) - { - struct sk_buff *skb; - unsigned long flags; -- atomic_inc(&pau_qps_destroyed); -+ atomic_inc_unchecked(&pau_qps_destroyed); - - /* Free packets that have not yet been forwarded */ - /* Lock is acquired by skb_dequeue when removing the skb */ -@@ -812,7 +812,7 @@ static void nes_mgt_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq * - cq->cq_vbase[head].cqe_words[NES_NIC_CQE_HASH_RCVNXT]); - skb_queue_head_init(&nesqp->pau_list); - spin_lock_init(&nesqp->pau_lock); -- atomic_inc(&pau_qps_created); -+ atomic_inc_unchecked(&pau_qps_created); - nes_change_quad_hash(nesdev, mgtvnic->nesvnic, nesqp); - } - -diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c -index f3a3ecf..57d311d 100644 ---- a/drivers/infiniband/hw/nes/nes_nic.c -+++ b/drivers/infiniband/hw/nes/nes_nic.c -@@ -1277,39 +1277,39 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev, - target_stat_values[++index] = mh_detected; - target_stat_values[++index] = mh_pauses_sent; - target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits; -- target_stat_values[++index] = atomic_read(&cm_connects); -- target_stat_values[++index] = atomic_read(&cm_accepts); -- target_stat_values[++index] = atomic_read(&cm_disconnects); -- target_stat_values[++index] = atomic_read(&cm_connecteds); -- target_stat_values[++index] = atomic_read(&cm_connect_reqs); -- target_stat_values[++index] = atomic_read(&cm_rejects); -- target_stat_values[++index] = atomic_read(&mod_qp_timouts); -- target_stat_values[++index] = atomic_read(&qps_created); -- target_stat_values[++index] = atomic_read(&sw_qps_destroyed); -- target_stat_values[++index] = atomic_read(&qps_destroyed); -- target_stat_values[++index] = atomic_read(&cm_closes); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_connects); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_accepts); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_disconnects); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_connecteds); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_connect_reqs); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_rejects); -+ target_stat_values[++index] = atomic_read_unchecked(&mod_qp_timouts); -+ target_stat_values[++index] = atomic_read_unchecked(&qps_created); -+ target_stat_values[++index] = atomic_read_unchecked(&sw_qps_destroyed); -+ target_stat_values[++index] = atomic_read_unchecked(&qps_destroyed); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_closes); - target_stat_values[++index] = cm_packets_sent; - target_stat_values[++index] = cm_packets_bounced; - target_stat_values[++index] = cm_packets_created; - target_stat_values[++index] = cm_packets_received; - target_stat_values[++index] = cm_packets_dropped; - target_stat_values[++index] = cm_packets_retrans; -- target_stat_values[++index] = atomic_read(&cm_listens_created); -- target_stat_values[++index] = atomic_read(&cm_listens_destroyed); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_created); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_destroyed); - target_stat_values[++index] = cm_backlog_drops; -- target_stat_values[++index] = atomic_read(&cm_loopbacks); -- target_stat_values[++index] = atomic_read(&cm_nodes_created); -- target_stat_values[++index] = atomic_read(&cm_nodes_destroyed); -- target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts); -- target_stat_values[++index] = atomic_read(&cm_resets_recvd); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_loopbacks); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_created); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_destroyed); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_accel_dropped_pkts); -+ target_stat_values[++index] = atomic_read_unchecked(&cm_resets_recvd); - target_stat_values[++index] = nesadapter->free_4kpbl; - target_stat_values[++index] = nesadapter->free_256pbl; - target_stat_values[++index] = int_mod_timer_init; - target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated; - target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed; - target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc; -- target_stat_values[++index] = atomic_read(&pau_qps_created); -- target_stat_values[++index] = atomic_read(&pau_qps_destroyed); -+ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_created); -+ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_destroyed); - } - - /** -diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c -index da84ea3..f159bbe 100644 ---- a/drivers/infiniband/hw/nes/nes_verbs.c -+++ b/drivers/infiniband/hw/nes/nes_verbs.c -@@ -46,9 +46,9 @@ - - #include - --atomic_t mod_qp_timouts; --atomic_t qps_created; --atomic_t sw_qps_destroyed; -+atomic_unchecked_t mod_qp_timouts; -+atomic_unchecked_t qps_created; -+atomic_unchecked_t sw_qps_destroyed; - - static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); - -@@ -1131,7 +1131,7 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd, - if (init_attr->create_flags) - return ERR_PTR(-EINVAL); - -- atomic_inc(&qps_created); -+ atomic_inc_unchecked(&qps_created); - switch (init_attr->qp_type) { - case IB_QPT_RC: - if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { -@@ -1462,7 +1462,7 @@ static int nes_destroy_qp(struct ib_qp *ibqp) - struct iw_cm_event cm_event; - int ret = 0; - -- atomic_inc(&sw_qps_destroyed); -+ atomic_inc_unchecked(&sw_qps_destroyed); - nesqp->destroyed = 1; - - /* Blow away the connection if it exists. */ -diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h -index 7b1b8669..4b69f85 100644 ---- a/drivers/infiniband/hw/qib/qib.h -+++ b/drivers/infiniband/hw/qib/qib.h -@@ -51,6 +51,7 @@ - #include - #include - #include -+#include - - #include "qib_common.h" - #include "qib_verbs.h" -diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c -index da739d9..da1c7f4 100644 ---- a/drivers/input/gameport/gameport.c -+++ b/drivers/input/gameport/gameport.c -@@ -487,14 +487,14 @@ EXPORT_SYMBOL(gameport_set_phys); - */ - static void gameport_init_port(struct gameport *gameport) - { -- static atomic_t gameport_no = ATOMIC_INIT(0); -+ static atomic_unchecked_t gameport_no = ATOMIC_INIT(0); - - __module_get(THIS_MODULE); - - mutex_init(&gameport->drv_mutex); - device_initialize(&gameport->dev); - dev_set_name(&gameport->dev, "gameport%lu", -- (unsigned long)atomic_inc_return(&gameport_no) - 1); -+ (unsigned long)atomic_inc_return_unchecked(&gameport_no) - 1); - gameport->dev.bus = &gameport_bus; - gameport->dev.release = gameport_release_port; - if (gameport->parent) -diff --git a/drivers/input/input.c b/drivers/input/input.c -index 8921c61..f5cd63d 100644 ---- a/drivers/input/input.c -+++ b/drivers/input/input.c -@@ -1814,7 +1814,7 @@ static void input_cleanse_bitmasks(struct input_dev *dev) - */ - int input_register_device(struct input_dev *dev) - { -- static atomic_t input_no = ATOMIC_INIT(0); -+ static atomic_unchecked_t input_no = ATOMIC_INIT(0); - struct input_handler *handler; - const char *path; - int error; -@@ -1851,7 +1851,7 @@ int input_register_device(struct input_dev *dev) - dev->setkeycode = input_default_setkeycode; - - dev_set_name(&dev->dev, "input%ld", -- (unsigned long) atomic_inc_return(&input_no) - 1); -+ (unsigned long) atomic_inc_return_unchecked(&input_no) - 1); - - error = device_add(&dev->dev); - if (error) -diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c -index 04c69af..5f92d00 100644 ---- a/drivers/input/joystick/sidewinder.c -+++ b/drivers/input/joystick/sidewinder.c -@@ -30,6 +30,7 @@ - #include - #include - #include -+#include - #include - #include - #include -diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c -index 83811e4..0822b90 100644 ---- a/drivers/input/joystick/xpad.c -+++ b/drivers/input/joystick/xpad.c -@@ -726,7 +726,7 @@ static void xpad_led_set(struct led_classdev *led_cdev, - - static int xpad_led_probe(struct usb_xpad *xpad) - { -- static atomic_t led_seq = ATOMIC_INIT(0); -+ static atomic_unchecked_t led_seq = ATOMIC_INIT(0); - long led_no; - struct xpad_led *led; - struct led_classdev *led_cdev; -@@ -739,7 +739,7 @@ static int xpad_led_probe(struct usb_xpad *xpad) - if (!led) - return -ENOMEM; - -- led_no = (long)atomic_inc_return(&led_seq) - 1; -+ led_no = (long)atomic_inc_return_unchecked(&led_seq) - 1; - - snprintf(led->name, sizeof(led->name), "xpad%ld", led_no); - led->xpad = xpad; -diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c -index 0110b5a..d3ad144 100644 ---- a/drivers/input/mousedev.c -+++ b/drivers/input/mousedev.c -@@ -763,7 +763,7 @@ static ssize_t mousedev_read(struct file *file, char __user *buffer, - - spin_unlock_irq(&client->packet_lock); - -- if (copy_to_user(buffer, data, count)) -+ if (count > sizeof(data) || copy_to_user(buffer, data, count)) - return -EFAULT; - - return count; -diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c -index d0f7533..fb8215b 100644 ---- a/drivers/input/serio/serio.c -+++ b/drivers/input/serio/serio.c -@@ -496,7 +496,7 @@ static void serio_release_port(struct device *dev) - */ - static void serio_init_port(struct serio *serio) - { -- static atomic_t serio_no = ATOMIC_INIT(0); -+ static atomic_unchecked_t serio_no = ATOMIC_INIT(0); - - __module_get(THIS_MODULE); - -@@ -507,7 +507,7 @@ static void serio_init_port(struct serio *serio) - mutex_init(&serio->drv_mutex); - device_initialize(&serio->dev); - dev_set_name(&serio->dev, "serio%ld", -- (long)atomic_inc_return(&serio_no) - 1); -+ (long)atomic_inc_return_unchecked(&serio_no) - 1); - serio->dev.bus = &serio_bus; - serio->dev.release = serio_release_port; - serio->dev.groups = serio_device_attr_groups; -diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c -index 38c4bd8..58965d9 100644 ---- a/drivers/isdn/capi/capi.c -+++ b/drivers/isdn/capi/capi.c -@@ -83,8 +83,8 @@ struct capiminor { - - struct capi20_appl *ap; - u32 ncci; -- atomic_t datahandle; -- atomic_t msgid; -+ atomic_unchecked_t datahandle; -+ atomic_unchecked_t msgid; - - struct tty_port port; - int ttyinstop; -@@ -392,7 +392,7 @@ gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) - capimsg_setu16(s, 2, mp->ap->applid); - capimsg_setu8 (s, 4, CAPI_DATA_B3); - capimsg_setu8 (s, 5, CAPI_RESP); -- capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); -+ capimsg_setu16(s, 6, atomic_inc_return_unchecked(&mp->msgid)); - capimsg_setu32(s, 8, mp->ncci); - capimsg_setu16(s, 12, datahandle); - } -@@ -513,14 +513,14 @@ static void handle_minor_send(struct capiminor *mp) - mp->outbytes -= len; - spin_unlock_bh(&mp->outlock); - -- datahandle = atomic_inc_return(&mp->datahandle); -+ datahandle = atomic_inc_return_unchecked(&mp->datahandle); - skb_push(skb, CAPI_DATA_B3_REQ_LEN); - memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); - capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); - capimsg_setu16(skb->data, 2, mp->ap->applid); - capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); - capimsg_setu8 (skb->data, 5, CAPI_REQ); -- capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); -+ capimsg_setu16(skb->data, 6, atomic_inc_return_unchecked(&mp->msgid)); - capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ - capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ - capimsg_setu16(skb->data, 16, len); /* Data length */ -diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c -index a6d9fd2..afdb8a3 100644 ---- a/drivers/isdn/gigaset/interface.c -+++ b/drivers/isdn/gigaset/interface.c -@@ -160,9 +160,9 @@ static int if_open(struct tty_struct *tty, struct file *filp) - } - tty->driver_data = cs; - -- ++cs->port.count; -+ atomic_inc(&cs->port.count); - -- if (cs->port.count == 1) { -+ if (atomic_read(&cs->port.count) == 1) { - tty_port_tty_set(&cs->port, tty); - tty->low_latency = 1; - } -@@ -186,9 +186,9 @@ static void if_close(struct tty_struct *tty, struct file *filp) - - if (!cs->connected) - gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ -- else if (!cs->port.count) -+ else if (!atomic_read(&cs->port.count)) - dev_warn(cs->dev, "%s: device not opened\n", __func__); -- else if (!--cs->port.count) -+ else if (!atomic_dec_return(&cs->port.count)) - tty_port_tty_set(&cs->port, NULL); - - mutex_unlock(&cs->mutex); -diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c -index 821f7ac..28d4030 100644 ---- a/drivers/isdn/hardware/avm/b1.c -+++ b/drivers/isdn/hardware/avm/b1.c -@@ -176,7 +176,7 @@ int b1_load_t4file(avmcard *card, capiloaddatapart *t4file) - } - if (left) { - if (t4file->user) { -- if (copy_from_user(buf, dp, left)) -+ if (left > sizeof buf || copy_from_user(buf, dp, left)) - return -EFAULT; - } else { - memcpy(buf, dp, left); -@@ -224,7 +224,7 @@ int b1_load_config(avmcard *card, capiloaddatapart *config) - } - if (left) { - if (config->user) { -- if (copy_from_user(buf, dp, left)) -+ if (left > sizeof buf || copy_from_user(buf, dp, left)) - return -EFAULT; - } else { - memcpy(buf, dp, left); -diff --git a/drivers/isdn/hardware/eicon/divasync.h b/drivers/isdn/hardware/eicon/divasync.h -index dd6b53a..19d9ee6 100644 ---- a/drivers/isdn/hardware/eicon/divasync.h -+++ b/drivers/isdn/hardware/eicon/divasync.h -@@ -146,7 +146,7 @@ typedef struct _diva_didd_add_adapter { - } diva_didd_add_adapter_t; - typedef struct _diva_didd_remove_adapter { - IDI_CALL p_request; --} diva_didd_remove_adapter_t; -+} __no_const diva_didd_remove_adapter_t; - typedef struct _diva_didd_read_adapter_array { - void *buffer; - dword length; -diff --git a/drivers/isdn/hardware/eicon/xdi_adapter.h b/drivers/isdn/hardware/eicon/xdi_adapter.h -index d303e65..28bcb7b 100644 ---- a/drivers/isdn/hardware/eicon/xdi_adapter.h -+++ b/drivers/isdn/hardware/eicon/xdi_adapter.h -@@ -44,7 +44,7 @@ typedef struct _xdi_mbox_t { - typedef struct _diva_os_idi_adapter_interface { - diva_init_card_proc_t cleanup_adapter_proc; - diva_cmd_card_proc_t cmd_proc; --} diva_os_idi_adapter_interface_t; -+} __no_const diva_os_idi_adapter_interface_t; - - typedef struct _diva_os_xdi_adapter { - struct list_head link; -diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c -index 7bc5067..fd36232 100644 ---- a/drivers/isdn/i4l/isdn_tty.c -+++ b/drivers/isdn/i4l/isdn_tty.c -@@ -1505,9 +1505,9 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp) - port = &info->port; - #ifdef ISDN_DEBUG_MODEM_OPEN - printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name, -- port->count); -+ atomic_read(&port->count)) - #endif -- port->count++; -+ atomic_inc(&port->count); - tty->driver_data = info; - port->tty = tty; - tty->port = port; -@@ -1553,7 +1553,7 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp) - #endif - return; - } -- if ((tty->count == 1) && (port->count != 1)) { -+ if ((tty->count == 1) && (atomic_read(&port->count) != 1)) { - /* - * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. Info->count should always -@@ -1562,15 +1562,15 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp) - * serial port won't be shutdown. - */ - printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, " -- "info->count is %d\n", port->count); -- port->count = 1; -+ "info->count is %d\n", atomic_read(&port->count)); -+ atomic_set(&port->count, 1); - } -- if (--port->count < 0) { -+ if (atomic_dec_return(&port->count) < 0) { - printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n", -- info->line, port->count); -- port->count = 0; -+ info->line, atomic_read(&port->count)); -+ atomic_set(&port->count, 0); - } -- if (port->count) { -+ if (atomic_read(&port->count)) { - #ifdef ISDN_DEBUG_MODEM_OPEN - printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n"); - #endif -@@ -1624,7 +1624,7 @@ isdn_tty_hangup(struct tty_struct *tty) - if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup")) - return; - isdn_tty_shutdown(info); -- port->count = 0; -+ atomic_set(&port->count, 0); - port->flags &= ~ASYNC_NORMAL_ACTIVE; - port->tty = NULL; - wake_up_interruptible(&port->open_wait); -@@ -1964,7 +1964,7 @@ isdn_tty_find_icall(int di, int ch, setup_parm *setup) - for (i = 0; i < ISDN_MAX_CHANNELS; i++) { - modem_info *info = &dev->mdm.info[i]; - -- if (info->port.count == 0) -+ if (atomic_read(&info->port.count) == 0) - continue; - if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */ - (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */ -diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c -index e74df7c..03a03ba 100644 ---- a/drivers/isdn/icn/icn.c -+++ b/drivers/isdn/icn/icn.c -@@ -1045,7 +1045,7 @@ icn_writecmd(const u_char *buf, int len, int user, icn_card *card) - if (count > len) - count = len; - if (user) { -- if (copy_from_user(msg, buf, count)) -+ if (count > sizeof msg || copy_from_user(msg, buf, count)) - return -EFAULT; - } else - memcpy(msg, buf, count); -diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c -index b5fdcb7..5b6c59f 100644 ---- a/drivers/lguest/core.c -+++ b/drivers/lguest/core.c -@@ -92,9 +92,17 @@ static __init int map_switcher(void) - * it's worked so far. The end address needs +1 because __get_vm_area - * allocates an extra guard page, so we need space for that. - */ -+ -+#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) -+ switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, -+ VM_ALLOC | VM_KERNEXEC, SWITCHER_ADDR, SWITCHER_ADDR -+ + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); -+#else - switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, - VM_ALLOC, SWITCHER_ADDR, SWITCHER_ADDR - + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); -+#endif -+ - if (!switcher_vma) { - err = -ENOMEM; - printk("lguest: could not map switcher pages high\n"); -@@ -119,7 +127,7 @@ static __init int map_switcher(void) - * Now the Switcher is mapped at the right address, we can't fail! - * Copy in the compiled-in Switcher code (from x86/switcher_32.S). - */ -- memcpy(switcher_vma->addr, start_switcher_text, -+ memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text), - end_switcher_text - start_switcher_text); - - printk(KERN_INFO "lguest: mapped switcher at %p\n", -diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c -index 39809035..ce25c5e 100644 ---- a/drivers/lguest/x86/core.c -+++ b/drivers/lguest/x86/core.c -@@ -59,7 +59,7 @@ static struct { - /* Offset from where switcher.S was compiled to where we've copied it */ - static unsigned long switcher_offset(void) - { -- return SWITCHER_ADDR - (unsigned long)start_switcher_text; -+ return SWITCHER_ADDR - (unsigned long)ktla_ktva(start_switcher_text); - } - - /* This cpu's struct lguest_pages. */ -@@ -100,7 +100,13 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages) - * These copies are pretty cheap, so we do them unconditionally: */ - /* Save the current Host top-level page directory. - */ -+ -+#ifdef CONFIG_PAX_PER_CPU_PGD -+ pages->state.host_cr3 = read_cr3(); -+#else - pages->state.host_cr3 = __pa(current->mm->pgd); -+#endif -+ - /* - * Set up the Guest's page tables to see this CPU's pages (and no - * other CPU's pages). -@@ -472,7 +478,7 @@ void __init lguest_arch_host_init(void) - * compiled-in switcher code and the high-mapped copy we just made. - */ - for (i = 0; i < IDT_ENTRIES; i++) -- default_idt_entries[i] += switcher_offset(); -+ default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset(); - - /* - * Set up the Switcher's per-cpu areas. -@@ -555,7 +561,7 @@ void __init lguest_arch_host_init(void) - * it will be undisturbed when we switch. To change %cs and jump we - * need this structure to feed to Intel's "lcall" instruction. - */ -- lguest_entry.offset = (long)switch_to_guest + switcher_offset(); -+ lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset(); - lguest_entry.segment = LGUEST_CS; - - /* -diff --git a/drivers/lguest/x86/switcher_32.S b/drivers/lguest/x86/switcher_32.S -index 40634b0..4f5855e 100644 ---- a/drivers/lguest/x86/switcher_32.S -+++ b/drivers/lguest/x86/switcher_32.S -@@ -87,6 +87,7 @@ - #include - #include - #include -+#include - - // We mark the start of the code to copy - // It's placed in .text tho it's never run here -@@ -149,6 +150,13 @@ ENTRY(switch_to_guest) - // Changes type when we load it: damn Intel! - // For after we switch over our page tables - // That entry will be read-only: we'd crash. -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ mov %cr0, %edx -+ xor $X86_CR0_WP, %edx -+ mov %edx, %cr0 -+#endif -+ - movl $(GDT_ENTRY_TSS*8), %edx - ltr %dx - -@@ -157,9 +165,15 @@ ENTRY(switch_to_guest) - // Let's clear it again for our return. - // The GDT descriptor of the Host - // Points to the table after two "size" bytes -- movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx -+ movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax - // Clear "used" from type field (byte 5, bit 2) -- andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx) -+ andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax) -+ -+#ifdef CONFIG_PAX_KERNEXEC -+ mov %cr0, %eax -+ xor $X86_CR0_WP, %eax -+ mov %eax, %cr0 -+#endif - - // Once our page table's switched, the Guest is live! - // The Host fades as we run this final step. -@@ -295,13 +309,12 @@ deliver_to_host: - // I consulted gcc, and it gave - // These instructions, which I gladly credit: - leal (%edx,%ebx,8), %eax -- movzwl (%eax),%edx -- movl 4(%eax), %eax -- xorw %ax, %ax -- orl %eax, %edx -+ movl 4(%eax), %edx -+ movw (%eax), %dx - // Now the address of the handler's in %edx - // We call it now: its "iret" drops us home. -- jmp *%edx -+ ljmp $__KERNEL_CS, $1f -+1: jmp *%edx - - // Every interrupt can come to us here - // But we must truly tell each apart. -diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c -index 20e5c2c..9e849a9 100644 ---- a/drivers/macintosh/macio_asic.c -+++ b/drivers/macintosh/macio_asic.c -@@ -748,7 +748,7 @@ static void __devexit macio_pci_remove(struct pci_dev* pdev) - * MacIO is matched against any Apple ID, it's probe() function - * will then decide wether it applies or not - */ --static const struct pci_device_id __devinitdata pci_ids [] = { { -+static const struct pci_device_id __devinitconst pci_ids [] = { { - .vendor = PCI_VENDOR_ID_APPLE, - .device = PCI_ANY_ID, - .subvendor = PCI_ANY_ID, -diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c -index 94e7f6b..2f4a0d8 100644 ---- a/drivers/md/bitmap.c -+++ b/drivers/md/bitmap.c -@@ -1786,7 +1786,7 @@ void bitmap_status(struct seq_file *seq, struct bitmap *bitmap) - chunk_kb ? "KB" : "B"); - if (bitmap->storage.file) { - seq_printf(seq, ", file: "); -- seq_path(seq, &bitmap->storage.file->f_path, " \t\n"); -+ seq_path(seq, &bitmap->storage.file->f_path, " \t\n\\"); - } - - seq_printf(seq, "\n"); -diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c -index a651d52..82f8a95 100644 ---- a/drivers/md/dm-ioctl.c -+++ b/drivers/md/dm-ioctl.c -@@ -1601,7 +1601,7 @@ static int validate_params(uint cmd, struct dm_ioctl *param) - cmd == DM_LIST_VERSIONS_CMD) - return 0; - -- if ((cmd == DM_DEV_CREATE_CMD)) { -+ if (cmd == DM_DEV_CREATE_CMD) { - if (!*param->name) { - DMWARN("name not supplied when creating device"); - return -EINVAL; -diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c -index bc5ddba8..b961159 100644 ---- a/drivers/md/dm-raid1.c -+++ b/drivers/md/dm-raid1.c -@@ -40,7 +40,7 @@ enum dm_raid1_error { - - struct mirror { - struct mirror_set *ms; -- atomic_t error_count; -+ atomic_unchecked_t error_count; - unsigned long error_type; - struct dm_dev *dev; - sector_t offset; -@@ -185,7 +185,7 @@ static struct mirror *get_valid_mirror(struct mirror_set *ms) - struct mirror *m; - - for (m = ms->mirror; m < ms->mirror + ms->nr_mirrors; m++) -- if (!atomic_read(&m->error_count)) -+ if (!atomic_read_unchecked(&m->error_count)) - return m; - - return NULL; -@@ -217,7 +217,7 @@ static void fail_mirror(struct mirror *m, enum dm_raid1_error error_type) - * simple way to tell if a device has encountered - * errors. - */ -- atomic_inc(&m->error_count); -+ atomic_inc_unchecked(&m->error_count); - - if (test_and_set_bit(error_type, &m->error_type)) - return; -@@ -408,7 +408,7 @@ static struct mirror *choose_mirror(struct mirror_set *ms, sector_t sector) - struct mirror *m = get_default_mirror(ms); - - do { -- if (likely(!atomic_read(&m->error_count))) -+ if (likely(!atomic_read_unchecked(&m->error_count))) - return m; - - if (m-- == ms->mirror) -@@ -422,7 +422,7 @@ static int default_ok(struct mirror *m) - { - struct mirror *default_mirror = get_default_mirror(m->ms); - -- return !atomic_read(&default_mirror->error_count); -+ return !atomic_read_unchecked(&default_mirror->error_count); - } - - static int mirror_available(struct mirror_set *ms, struct bio *bio) -@@ -559,7 +559,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads) - */ - if (likely(region_in_sync(ms, region, 1))) - m = choose_mirror(ms, bio->bi_sector); -- else if (m && atomic_read(&m->error_count)) -+ else if (m && atomic_read_unchecked(&m->error_count)) - m = NULL; - - if (likely(m)) -@@ -938,7 +938,7 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti, - } - - ms->mirror[mirror].ms = ms; -- atomic_set(&(ms->mirror[mirror].error_count), 0); -+ atomic_set_unchecked(&(ms->mirror[mirror].error_count), 0); - ms->mirror[mirror].error_type = 0; - ms->mirror[mirror].offset = offset; - -@@ -1356,7 +1356,7 @@ static void mirror_resume(struct dm_target *ti) - */ - static char device_status_char(struct mirror *m) - { -- if (!atomic_read(&(m->error_count))) -+ if (!atomic_read_unchecked(&(m->error_count))) - return 'A'; - - return (test_bit(DM_RAID1_FLUSH_ERROR, &(m->error_type))) ? 'F' : -diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c -index a087bf2..4c94786 100644 ---- a/drivers/md/dm-stripe.c -+++ b/drivers/md/dm-stripe.c -@@ -20,7 +20,7 @@ struct stripe { - struct dm_dev *dev; - sector_t physical_start; - -- atomic_t error_count; -+ atomic_unchecked_t error_count; - }; - - struct stripe_c { -@@ -183,7 +183,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv) - kfree(sc); - return r; - } -- atomic_set(&(sc->stripe[i].error_count), 0); -+ atomic_set_unchecked(&(sc->stripe[i].error_count), 0); - } - - ti->private = sc; -@@ -324,7 +324,7 @@ static int stripe_status(struct dm_target *ti, status_type_t type, - DMEMIT("%d ", sc->stripes); - for (i = 0; i < sc->stripes; i++) { - DMEMIT("%s ", sc->stripe[i].dev->name); -- buffer[i] = atomic_read(&(sc->stripe[i].error_count)) ? -+ buffer[i] = atomic_read_unchecked(&(sc->stripe[i].error_count)) ? - 'D' : 'A'; - } - buffer[i] = '\0'; -@@ -371,8 +371,8 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, - */ - for (i = 0; i < sc->stripes; i++) - if (!strcmp(sc->stripe[i].dev->name, major_minor)) { -- atomic_inc(&(sc->stripe[i].error_count)); -- if (atomic_read(&(sc->stripe[i].error_count)) < -+ atomic_inc_unchecked(&(sc->stripe[i].error_count)); -+ if (atomic_read_unchecked(&(sc->stripe[i].error_count)) < - DM_IO_ERROR_THRESHOLD) - schedule_work(&sc->trigger_event); - } -diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c -index 100368e..64262ce 100644 ---- a/drivers/md/dm-table.c -+++ b/drivers/md/dm-table.c -@@ -390,7 +390,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev, - if (!dev_size) - return 0; - -- if ((start >= dev_size) || (start + len > dev_size)) { -+ if ((start >= dev_size) || (len > dev_size - start)) { - DMWARN("%s: %s too small for target: " - "start=%llu, len=%llu, dev_size=%llu", - dm_device_name(ti->table->md), bdevname(bdev, b), -diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c -index 693e149..b7e0fde 100644 ---- a/drivers/md/dm-thin-metadata.c -+++ b/drivers/md/dm-thin-metadata.c -@@ -397,7 +397,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd) - { - pmd->info.tm = pmd->tm; - pmd->info.levels = 2; -- pmd->info.value_type.context = pmd->data_sm; -+ pmd->info.value_type.context = (dm_space_map_no_const *)pmd->data_sm; - pmd->info.value_type.size = sizeof(__le64); - pmd->info.value_type.inc = data_block_inc; - pmd->info.value_type.dec = data_block_dec; -@@ -416,7 +416,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd) - - pmd->bl_info.tm = pmd->tm; - pmd->bl_info.levels = 1; -- pmd->bl_info.value_type.context = pmd->data_sm; -+ pmd->bl_info.value_type.context = (dm_space_map_no_const *)pmd->data_sm; - pmd->bl_info.value_type.size = sizeof(__le64); - pmd->bl_info.value_type.inc = data_block_inc; - pmd->bl_info.value_type.dec = data_block_dec; -diff --git a/drivers/md/dm.c b/drivers/md/dm.c -index 4256200..154b975 100644 ---- a/drivers/md/dm.c -+++ b/drivers/md/dm.c -@@ -176,9 +176,9 @@ struct mapped_device { - /* - * Event handling. - */ -- atomic_t event_nr; -+ atomic_unchecked_t event_nr; - wait_queue_head_t eventq; -- atomic_t uevent_seq; -+ atomic_unchecked_t uevent_seq; - struct list_head uevent_list; - spinlock_t uevent_lock; /* Protect access to uevent_list */ - -@@ -1893,8 +1893,8 @@ static struct mapped_device *alloc_dev(int minor) - rwlock_init(&md->map_lock); - atomic_set(&md->holders, 1); - atomic_set(&md->open_count, 0); -- atomic_set(&md->event_nr, 0); -- atomic_set(&md->uevent_seq, 0); -+ atomic_set_unchecked(&md->event_nr, 0); -+ atomic_set_unchecked(&md->uevent_seq, 0); - INIT_LIST_HEAD(&md->uevent_list); - spin_lock_init(&md->uevent_lock); - -@@ -2028,7 +2028,7 @@ static void event_callback(void *context) - - dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj); - -- atomic_inc(&md->event_nr); -+ atomic_inc_unchecked(&md->event_nr); - wake_up(&md->eventq); - } - -@@ -2683,18 +2683,18 @@ int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action, - - uint32_t dm_next_uevent_seq(struct mapped_device *md) - { -- return atomic_add_return(1, &md->uevent_seq); -+ return atomic_add_return_unchecked(1, &md->uevent_seq); - } - - uint32_t dm_get_event_nr(struct mapped_device *md) - { -- return atomic_read(&md->event_nr); -+ return atomic_read_unchecked(&md->event_nr); - } - - int dm_wait_event(struct mapped_device *md, int event_nr) - { - return wait_event_interruptible(md->eventq, -- (event_nr != atomic_read(&md->event_nr))); -+ (event_nr != atomic_read_unchecked(&md->event_nr))); - } - - void dm_uevent_add(struct mapped_device *md, struct list_head *elist) -diff --git a/drivers/md/md.c b/drivers/md/md.c -index c7b000f..15a8b22 100644 ---- a/drivers/md/md.c -+++ b/drivers/md/md.c -@@ -277,10 +277,10 @@ EXPORT_SYMBOL_GPL(md_trim_bio); - * start build, activate spare - */ - static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters); --static atomic_t md_event_count; -+static atomic_unchecked_t md_event_count; - void md_new_event(struct mddev *mddev) - { -- atomic_inc(&md_event_count); -+ atomic_inc_unchecked(&md_event_count); - wake_up(&md_event_waiters); - } - EXPORT_SYMBOL_GPL(md_new_event); -@@ -290,7 +290,7 @@ EXPORT_SYMBOL_GPL(md_new_event); - */ - static void md_new_event_inintr(struct mddev *mddev) - { -- atomic_inc(&md_event_count); -+ atomic_inc_unchecked(&md_event_count); - wake_up(&md_event_waiters); - } - -@@ -1519,7 +1519,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_ - if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE) && - (le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) - rdev->new_data_offset += (s32)le32_to_cpu(sb->new_offset); -- atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); -+ atomic_set_unchecked(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); - - rdev->sb_size = le32_to_cpu(sb->max_dev) * 2 + 256; - bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1; -@@ -1763,7 +1763,7 @@ static void super_1_sync(struct mddev *mddev, struct md_rdev *rdev) - else - sb->resync_offset = cpu_to_le64(0); - -- sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors)); -+ sb->cnt_corrected_read = cpu_to_le32(atomic_read_unchecked(&rdev->corrected_errors)); - - sb->raid_disks = cpu_to_le32(mddev->raid_disks); - sb->size = cpu_to_le64(mddev->dev_sectors); -@@ -2757,7 +2757,7 @@ __ATTR(state, S_IRUGO|S_IWUSR, state_show, state_store); - static ssize_t - errors_show(struct md_rdev *rdev, char *page) - { -- return sprintf(page, "%d\n", atomic_read(&rdev->corrected_errors)); -+ return sprintf(page, "%d\n", atomic_read_unchecked(&rdev->corrected_errors)); - } - - static ssize_t -@@ -2766,7 +2766,7 @@ errors_store(struct md_rdev *rdev, const char *buf, size_t len) - char *e; - unsigned long n = simple_strtoul(buf, &e, 10); - if (*buf && (*e == 0 || *e == '\n')) { -- atomic_set(&rdev->corrected_errors, n); -+ atomic_set_unchecked(&rdev->corrected_errors, n); - return len; - } - return -EINVAL; -@@ -3213,8 +3213,8 @@ int md_rdev_init(struct md_rdev *rdev) - rdev->sb_loaded = 0; - rdev->bb_page = NULL; - atomic_set(&rdev->nr_pending, 0); -- atomic_set(&rdev->read_errors, 0); -- atomic_set(&rdev->corrected_errors, 0); -+ atomic_set_unchecked(&rdev->read_errors, 0); -+ atomic_set_unchecked(&rdev->corrected_errors, 0); - - INIT_LIST_HEAD(&rdev->same_set); - init_waitqueue_head(&rdev->blocked_wait); -@@ -6947,7 +6947,7 @@ static int md_seq_show(struct seq_file *seq, void *v) - - spin_unlock(&pers_lock); - seq_printf(seq, "\n"); -- seq->poll_event = atomic_read(&md_event_count); -+ seq->poll_event = atomic_read_unchecked(&md_event_count); - return 0; - } - if (v == (void*)2) { -@@ -7050,7 +7050,7 @@ static int md_seq_open(struct inode *inode, struct file *file) - return error; - - seq = file->private_data; -- seq->poll_event = atomic_read(&md_event_count); -+ seq->poll_event = atomic_read_unchecked(&md_event_count); - return error; - } - -@@ -7064,7 +7064,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait) - /* always allow read */ - mask = POLLIN | POLLRDNORM; - -- if (seq->poll_event != atomic_read(&md_event_count)) -+ if (seq->poll_event != atomic_read_unchecked(&md_event_count)) - mask |= POLLERR | POLLPRI; - return mask; - } -@@ -7108,7 +7108,7 @@ static int is_mddev_idle(struct mddev *mddev, int init) - struct gendisk *disk = rdev->bdev->bd_contains->bd_disk; - curr_events = (int)part_stat_read(&disk->part0, sectors[0]) + - (int)part_stat_read(&disk->part0, sectors[1]) - -- atomic_read(&disk->sync_io); -+ atomic_read_unchecked(&disk->sync_io); - /* sync IO will cause sync_io to increase before the disk_stats - * as sync_io is counted when a request starts, and - * disk_stats is counted when it completes. -diff --git a/drivers/md/md.h b/drivers/md/md.h -index f385b03..b600be8 100644 ---- a/drivers/md/md.h -+++ b/drivers/md/md.h -@@ -94,13 +94,13 @@ struct md_rdev { - * only maintained for arrays that - * support hot removal - */ -- atomic_t read_errors; /* number of consecutive read errors that -+ atomic_unchecked_t read_errors; /* number of consecutive read errors that - * we have tried to ignore. - */ - struct timespec last_read_error; /* monotonic time since our - * last read error - */ -- atomic_t corrected_errors; /* number of corrected read errors, -+ atomic_unchecked_t corrected_errors; /* number of corrected read errors, - * for reporting to userspace and storing - * in superblock. - */ -@@ -432,7 +432,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev) - - static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors) - { -- atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); -+ atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); - } - - struct md_personality -diff --git a/drivers/md/persistent-data/dm-space-map-disk.c b/drivers/md/persistent-data/dm-space-map-disk.c -index f6d29e6..7917f5e 100644 ---- a/drivers/md/persistent-data/dm-space-map-disk.c -+++ b/drivers/md/persistent-data/dm-space-map-disk.c -@@ -22,7 +22,7 @@ - * Space map interface. - */ - struct sm_disk { -- struct dm_space_map sm; -+ dm_space_map_no_const sm; - - struct ll_disk ll; - struct ll_disk old_ll; -diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c -index e89ae5e..062e4c2 100644 ---- a/drivers/md/persistent-data/dm-space-map-metadata.c -+++ b/drivers/md/persistent-data/dm-space-map-metadata.c -@@ -43,7 +43,7 @@ struct block_op { - }; - - struct sm_metadata { -- struct dm_space_map sm; -+ dm_space_map_no_const sm; - - struct ll_disk ll; - struct ll_disk old_ll; -diff --git a/drivers/md/persistent-data/dm-space-map.h b/drivers/md/persistent-data/dm-space-map.h -index 1cbfc6b..56e1dbb 100644 ---- a/drivers/md/persistent-data/dm-space-map.h -+++ b/drivers/md/persistent-data/dm-space-map.h -@@ -60,6 +60,7 @@ struct dm_space_map { - int (*root_size)(struct dm_space_map *sm, size_t *result); - int (*copy_root)(struct dm_space_map *sm, void *copy_to_here_le, size_t len); - }; -+typedef struct dm_space_map __no_const dm_space_map_no_const; - - /*----------------------------------------------------------------*/ - -diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c -index 7077dcf..facc1e9 100644 ---- a/drivers/md/raid1.c -+++ b/drivers/md/raid1.c -@@ -1810,7 +1810,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio) - if (r1_sync_page_io(rdev, sect, s, - bio->bi_io_vec[idx].bv_page, - READ) != 0) -- atomic_add(s, &rdev->corrected_errors); -+ atomic_add_unchecked(s, &rdev->corrected_errors); - } - sectors -= s; - sect += s; -@@ -2032,7 +2032,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk, - test_bit(In_sync, &rdev->flags)) { - if (r1_sync_page_io(rdev, sect, s, - conf->tmppage, READ)) { -- atomic_add(s, &rdev->corrected_errors); -+ atomic_add_unchecked(s, &rdev->corrected_errors); - printk(KERN_INFO - "md/raid1:%s: read error corrected " - "(%d sectors at %llu on %s)\n", -diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c -index c52d893..69c5d80 100644 ---- a/drivers/md/raid10.c -+++ b/drivers/md/raid10.c -@@ -1814,7 +1814,7 @@ static void end_sync_read(struct bio *bio, int error) - /* The write handler will notice the lack of - * R10BIO_Uptodate and record any errors etc - */ -- atomic_add(r10_bio->sectors, -+ atomic_add_unchecked(r10_bio->sectors, - &conf->mirrors[d].rdev->corrected_errors); - - /* for reconstruct, we always reschedule after a read. -@@ -2163,7 +2163,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) - { - struct timespec cur_time_mon; - unsigned long hours_since_last; -- unsigned int read_errors = atomic_read(&rdev->read_errors); -+ unsigned int read_errors = atomic_read_unchecked(&rdev->read_errors); - - ktime_get_ts(&cur_time_mon); - -@@ -2185,9 +2185,9 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) - * overflowing the shift of read_errors by hours_since_last. - */ - if (hours_since_last >= 8 * sizeof(read_errors)) -- atomic_set(&rdev->read_errors, 0); -+ atomic_set_unchecked(&rdev->read_errors, 0); - else -- atomic_set(&rdev->read_errors, read_errors >> hours_since_last); -+ atomic_set_unchecked(&rdev->read_errors, read_errors >> hours_since_last); - } - - static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector, -@@ -2241,8 +2241,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 - return; - - check_decay_read_errors(mddev, rdev); -- atomic_inc(&rdev->read_errors); -- if (atomic_read(&rdev->read_errors) > max_read_errors) { -+ atomic_inc_unchecked(&rdev->read_errors); -+ if (atomic_read_unchecked(&rdev->read_errors) > max_read_errors) { - char b[BDEVNAME_SIZE]; - bdevname(rdev->bdev, b); - -@@ -2250,7 +2250,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 - "md/raid10:%s: %s: Raid device exceeded " - "read_error threshold [cur %d:max %d]\n", - mdname(mddev), b, -- atomic_read(&rdev->read_errors), max_read_errors); -+ atomic_read_unchecked(&rdev->read_errors), max_read_errors); - printk(KERN_NOTICE - "md/raid10:%s: %s: Failing raid device\n", - mdname(mddev), b); -@@ -2405,7 +2405,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 - sect + - choose_data_offset(r10_bio, rdev)), - bdevname(rdev->bdev, b)); -- atomic_add(s, &rdev->corrected_errors); -+ atomic_add_unchecked(s, &rdev->corrected_errors); - } - - rdev_dec_pending(rdev, mddev); -diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c -index 0689173..35df76c 100644 ---- a/drivers/md/raid5.c -+++ b/drivers/md/raid5.c -@@ -1756,21 +1756,21 @@ static void raid5_end_read_request(struct bio * bi, int error) - mdname(conf->mddev), STRIPE_SECTORS, - (unsigned long long)s, - bdevname(rdev->bdev, b)); -- atomic_add(STRIPE_SECTORS, &rdev->corrected_errors); -+ atomic_add_unchecked(STRIPE_SECTORS, &rdev->corrected_errors); - clear_bit(R5_ReadError, &sh->dev[i].flags); - clear_bit(R5_ReWrite, &sh->dev[i].flags); - } else if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags)) - clear_bit(R5_ReadNoMerge, &sh->dev[i].flags); - -- if (atomic_read(&rdev->read_errors)) -- atomic_set(&rdev->read_errors, 0); -+ if (atomic_read_unchecked(&rdev->read_errors)) -+ atomic_set_unchecked(&rdev->read_errors, 0); - } else { - const char *bdn = bdevname(rdev->bdev, b); - int retry = 0; - int set_bad = 0; - - clear_bit(R5_UPTODATE, &sh->dev[i].flags); -- atomic_inc(&rdev->read_errors); -+ atomic_inc_unchecked(&rdev->read_errors); - if (test_bit(R5_ReadRepl, &sh->dev[i].flags)) - printk_ratelimited( - KERN_WARNING -@@ -1798,7 +1798,7 @@ static void raid5_end_read_request(struct bio * bi, int error) - mdname(conf->mddev), - (unsigned long long)s, - bdn); -- } else if (atomic_read(&rdev->read_errors) -+ } else if (atomic_read_unchecked(&rdev->read_errors) - > conf->max_nr_stripes) - printk(KERN_WARNING - "md/raid:%s: Too many read errors, failing device %s.\n", -diff --git a/drivers/media/dvb/ddbridge/ddbridge-core.c b/drivers/media/dvb/ddbridge/ddbridge-core.c -index ebf3f05..b1f3e77 100644 ---- a/drivers/media/dvb/ddbridge/ddbridge-core.c -+++ b/drivers/media/dvb/ddbridge/ddbridge-core.c -@@ -1679,7 +1679,7 @@ static struct ddb_info ddb_v6 = { - .subvendor = _subvend, .subdevice = _subdev, \ - .driver_data = (unsigned long)&_driverdata } - --static const struct pci_device_id ddb_id_tbl[] __devinitdata = { -+static const struct pci_device_id ddb_id_tbl[] __devinitconst = { - DDB_ID(DDVID, 0x0002, DDVID, 0x0001, ddb_octopus), - DDB_ID(DDVID, 0x0003, DDVID, 0x0001, ddb_octopus), - DDB_ID(DDVID, 0x0003, DDVID, 0x0002, ddb_octopus_le), -diff --git a/drivers/media/dvb/dvb-core/dvb_demux.h b/drivers/media/dvb/dvb-core/dvb_demux.h -index fa7188a..04a045e 100644 ---- a/drivers/media/dvb/dvb-core/dvb_demux.h -+++ b/drivers/media/dvb/dvb-core/dvb_demux.h -@@ -73,7 +73,7 @@ struct dvb_demux_feed { - union { - dmx_ts_cb ts; - dmx_section_cb sec; -- } cb; -+ } __no_const cb; - - struct dvb_demux *demux; - void *priv; -diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c -index 39eab73..60033e7 100644 ---- a/drivers/media/dvb/dvb-core/dvbdev.c -+++ b/drivers/media/dvb/dvb-core/dvbdev.c -@@ -192,7 +192,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, - const struct dvb_device *template, void *priv, int type) - { - struct dvb_device *dvbdev; -- struct file_operations *dvbdevfops; -+ file_operations_no_const *dvbdevfops; - struct device *clsdev; - int minor; - int id; -diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c -index 3940bb0..fb3952a 100644 ---- a/drivers/media/dvb/dvb-usb/cxusb.c -+++ b/drivers/media/dvb/dvb-usb/cxusb.c -@@ -1068,7 +1068,7 @@ static struct dib0070_config dib7070p_dib0070_config = { - - struct dib0700_adapter_state { - int (*set_param_save) (struct dvb_frontend *); --}; -+} __no_const; - - static int dib7070_set_param_override(struct dvb_frontend *fe) - { -diff --git a/drivers/media/dvb/dvb-usb/dw2102.c b/drivers/media/dvb/dvb-usb/dw2102.c -index 9382895..ac8093c 100644 ---- a/drivers/media/dvb/dvb-usb/dw2102.c -+++ b/drivers/media/dvb/dvb-usb/dw2102.c -@@ -95,7 +95,7 @@ struct su3000_state { - - struct s6x0_state { - int (*old_set_voltage)(struct dvb_frontend *f, fe_sec_voltage_t v); --}; -+} __no_const; - - /* debug */ - static int dvb_usb_dw2102_debug; -diff --git a/drivers/media/dvb/frontends/dib3000.h b/drivers/media/dvb/frontends/dib3000.h -index 404f63a..4796533 100644 ---- a/drivers/media/dvb/frontends/dib3000.h -+++ b/drivers/media/dvb/frontends/dib3000.h -@@ -39,7 +39,7 @@ struct dib_fe_xfer_ops - int (*fifo_ctrl)(struct dvb_frontend *fe, int onoff); - int (*pid_ctrl)(struct dvb_frontend *fe, int index, int pid, int onoff); - int (*tuner_pass_ctrl)(struct dvb_frontend *fe, int onoff, u8 pll_ctrl); --}; -+} __no_const; - - #if defined(CONFIG_DVB_DIB3000MB) || (defined(CONFIG_DVB_DIB3000MB_MODULE) && defined(MODULE)) - extern struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config, -diff --git a/drivers/media/dvb/ngene/ngene-cards.c b/drivers/media/dvb/ngene/ngene-cards.c -index 72ee8de..eae0c80 100644 ---- a/drivers/media/dvb/ngene/ngene-cards.c -+++ b/drivers/media/dvb/ngene/ngene-cards.c -@@ -479,7 +479,7 @@ static struct ngene_info ngene_info_m780 = { - - /****************************************************************************/ - --static const struct pci_device_id ngene_id_tbl[] __devinitdata = { -+static const struct pci_device_id ngene_id_tbl[] __devinitconst = { - NGENE_ID(0x18c3, 0xabc3, ngene_info_cineS2), - NGENE_ID(0x18c3, 0xabc4, ngene_info_cineS2), - NGENE_ID(0x18c3, 0xdb01, ngene_info_satixS2), -diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c -index 697a421..16c5a5f 100644 ---- a/drivers/media/radio/radio-cadet.c -+++ b/drivers/media/radio/radio-cadet.c -@@ -302,6 +302,8 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo - unsigned char readbuf[RDS_BUFFER]; - int i = 0; - -+ if (count > RDS_BUFFER) -+ return -EFAULT; - mutex_lock(&dev->lock); - if (dev->rdsstat == 0) - cadet_start_rds(dev); -@@ -317,7 +319,7 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo - while (i < count && dev->rdsin != dev->rdsout) - readbuf[i++] = dev->rdsbuf[dev->rdsout++]; - -- if (i && copy_to_user(data, readbuf, i)) -+ if (i > sizeof(readbuf) || copy_to_user(data, readbuf, i)) - i = -EFAULT; - unlock: - mutex_unlock(&dev->lock); -diff --git a/drivers/media/radio/radio-tea5777.h b/drivers/media/radio/radio-tea5777.h -index 55cbd78..428b0da 100644 ---- a/drivers/media/radio/radio-tea5777.h -+++ b/drivers/media/radio/radio-tea5777.h -@@ -63,7 +63,7 @@ struct radio_tea5777_ops { - - struct radio_tea5777 { - struct v4l2_device *v4l2_dev; -- struct v4l2_file_operations fops; -+ v4l2_file_operations_no_const fops; - struct video_device vd; /* video device */ - bool has_am; /* Device can tune to AM freqs */ - bool write_before_read; /* must write before read quirk */ -diff --git a/drivers/media/video/au0828/au0828.h b/drivers/media/video/au0828/au0828.h -index 9cde353..8c6a1c3 100644 ---- a/drivers/media/video/au0828/au0828.h -+++ b/drivers/media/video/au0828/au0828.h -@@ -191,7 +191,7 @@ struct au0828_dev { - - /* I2C */ - struct i2c_adapter i2c_adap; -- struct i2c_algorithm i2c_algo; -+ i2c_algorithm_no_const i2c_algo; - struct i2c_client i2c_client; - u32 i2c_rc; - -diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c -index dfac6e3..c26de31 100644 ---- a/drivers/media/video/cx88/cx88-alsa.c -+++ b/drivers/media/video/cx88/cx88-alsa.c -@@ -749,7 +749,7 @@ static struct snd_kcontrol_new snd_cx88_alc_switch = { - * Only boards with eeprom and byte 1 at eeprom=1 have it - */ - --static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = { -+static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitconst = { - {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, - {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, - {0, } -diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c -index 88cf9d9..bbc4b2c 100644 ---- a/drivers/media/video/omap/omap_vout.c -+++ b/drivers/media/video/omap/omap_vout.c -@@ -64,7 +64,6 @@ enum omap_vout_channels { - OMAP_VIDEO2, - }; - --static struct videobuf_queue_ops video_vbq_ops; - /* Variables configurable through module params*/ - static u32 video1_numbuffers = 3; - static u32 video2_numbuffers = 3; -@@ -1000,6 +999,12 @@ static int omap_vout_open(struct file *file) - { - struct videobuf_queue *q; - struct omap_vout_device *vout = NULL; -+ static struct videobuf_queue_ops video_vbq_ops = { -+ .buf_setup = omap_vout_buffer_setup, -+ .buf_prepare = omap_vout_buffer_prepare, -+ .buf_release = omap_vout_buffer_release, -+ .buf_queue = omap_vout_buffer_queue, -+ }; - - vout = video_drvdata(file); - v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__); -@@ -1017,10 +1022,6 @@ static int omap_vout_open(struct file *file) - vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - - q = &vout->vbq; -- video_vbq_ops.buf_setup = omap_vout_buffer_setup; -- video_vbq_ops.buf_prepare = omap_vout_buffer_prepare; -- video_vbq_ops.buf_release = omap_vout_buffer_release; -- video_vbq_ops.buf_queue = omap_vout_buffer_queue; - spin_lock_init(&vout->vbq_lock); - - videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev, -diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h -index 036952f..80d356d 100644 ---- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h -+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h -@@ -196,7 +196,7 @@ struct pvr2_hdw { - - /* I2C stuff */ - struct i2c_adapter i2c_adap; -- struct i2c_algorithm i2c_algo; -+ i2c_algorithm_no_const i2c_algo; - pvr2_i2c_func i2c_func[PVR2_I2C_FUNC_CNT]; - int i2c_cx25840_hack_state; - int i2c_linked; -diff --git a/drivers/media/video/timblogiw.c b/drivers/media/video/timblogiw.c -index 02194c0..091733b 100644 ---- a/drivers/media/video/timblogiw.c -+++ b/drivers/media/video/timblogiw.c -@@ -745,7 +745,7 @@ static int timblogiw_mmap(struct file *file, struct vm_area_struct *vma) - - /* Platform device functions */ - --static __devinitconst struct v4l2_ioctl_ops timblogiw_ioctl_ops = { -+static __devinitconst v4l2_ioctl_ops_no_const timblogiw_ioctl_ops = { - .vidioc_querycap = timblogiw_querycap, - .vidioc_enum_fmt_vid_cap = timblogiw_enum_fmt, - .vidioc_g_fmt_vid_cap = timblogiw_g_fmt, -@@ -767,7 +767,7 @@ static __devinitconst struct v4l2_ioctl_ops timblogiw_ioctl_ops = { - .vidioc_enum_framesizes = timblogiw_enum_framesizes, - }; - --static __devinitconst struct v4l2_file_operations timblogiw_fops = { -+static __devinitconst v4l2_file_operations_no_const timblogiw_fops = { - .owner = THIS_MODULE, - .open = timblogiw_open, - .release = timblogiw_close, -diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c -index d99db56..a16b959 100644 ---- a/drivers/message/fusion/mptbase.c -+++ b/drivers/message/fusion/mptbase.c -@@ -6751,8 +6751,13 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v) - seq_printf(m, " MaxChainDepth = 0x%02x frames\n", ioc->facts.MaxChainDepth); - seq_printf(m, " MinBlockSize = 0x%02x bytes\n", 4*ioc->facts.BlockSize); - -+#ifdef CONFIG_GRKERNSEC_HIDESYM -+ seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n", NULL, NULL); -+#else - seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n", - (void *)ioc->req_frames, (void *)(ulong)ioc->req_frames_dma); -+#endif -+ - /* - * Rounding UP to nearest 4-kB boundary here... - */ -diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c -index 551262e..7551198 100644 ---- a/drivers/message/fusion/mptsas.c -+++ b/drivers/message/fusion/mptsas.c -@@ -446,6 +446,23 @@ mptsas_is_end_device(struct mptsas_devinfo * attached) - return 0; - } - -+static inline void -+mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) -+{ -+ if (phy_info->port_details) { -+ phy_info->port_details->rphy = rphy; -+ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", -+ ioc->name, rphy)); -+ } -+ -+ if (rphy) { -+ dsaswideprintk(ioc, dev_printk(KERN_DEBUG, -+ &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); -+ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", -+ ioc->name, rphy, rphy->dev.release)); -+ } -+} -+ - /* no mutex */ - static void - mptsas_port_delete(MPT_ADAPTER *ioc, struct mptsas_portinfo_details * port_details) -@@ -484,23 +501,6 @@ mptsas_get_rphy(struct mptsas_phyinfo *phy_info) - return NULL; - } - --static inline void --mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) --{ -- if (phy_info->port_details) { -- phy_info->port_details->rphy = rphy; -- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", -- ioc->name, rphy)); -- } -- -- if (rphy) { -- dsaswideprintk(ioc, dev_printk(KERN_DEBUG, -- &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); -- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", -- ioc->name, rphy, rphy->dev.release)); -- } --} -- - static inline struct sas_port * - mptsas_get_port(struct mptsas_phyinfo *phy_info) - { -diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c -index 0c3ced7..1fe34ec 100644 ---- a/drivers/message/fusion/mptscsih.c -+++ b/drivers/message/fusion/mptscsih.c -@@ -1270,15 +1270,16 @@ mptscsih_info(struct Scsi_Host *SChost) - - h = shost_priv(SChost); - -- if (h) { -- if (h->info_kbuf == NULL) -- if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) -- return h->info_kbuf; -- h->info_kbuf[0] = '\0'; -+ if (!h) -+ return NULL; - -- mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); -- h->info_kbuf[size-1] = '\0'; -- } -+ if (h->info_kbuf == NULL) -+ if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) -+ return h->info_kbuf; -+ h->info_kbuf[0] = '\0'; -+ -+ mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); -+ h->info_kbuf[size-1] = '\0'; - - return h->info_kbuf; - } -diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c -index 8001aa6..b137580 100644 ---- a/drivers/message/i2o/i2o_proc.c -+++ b/drivers/message/i2o/i2o_proc.c -@@ -255,12 +255,6 @@ static char *scsi_devices[] = { - "Array Controller Device" - }; - --static char *chtostr(char *tmp, u8 *chars, int n) --{ -- tmp[0] = 0; -- return strncat(tmp, (char *)chars, n); --} -- - static int i2o_report_query_status(struct seq_file *seq, int block_status, - char *group) - { -@@ -790,7 +784,6 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v) - } *result; - - i2o_exec_execute_ddm_table ddm_table; -- char tmp[28 + 1]; - - result = kmalloc(sizeof(*result), GFP_KERNEL); - if (!result) -@@ -825,8 +818,7 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v) - - seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id); - seq_printf(seq, "%-#8x", ddm_table.module_id); -- seq_printf(seq, "%-29s", -- chtostr(tmp, ddm_table.module_name_version, 28)); -+ seq_printf(seq, "%-.28s", ddm_table.module_name_version); - seq_printf(seq, "%9d ", ddm_table.data_size); - seq_printf(seq, "%8d", ddm_table.code_size); - -@@ -893,7 +885,6 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v) - - i2o_driver_result_table *result; - i2o_driver_store_table *dst; -- char tmp[28 + 1]; - - result = kmalloc(sizeof(i2o_driver_result_table), GFP_KERNEL); - if (result == NULL) -@@ -928,9 +919,8 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v) - - seq_printf(seq, "%-#7x", dst->i2o_vendor_id); - seq_printf(seq, "%-#8x", dst->module_id); -- seq_printf(seq, "%-29s", -- chtostr(tmp, dst->module_name_version, 28)); -- seq_printf(seq, "%-9s", chtostr(tmp, dst->date, 8)); -+ seq_printf(seq, "%-.28s", dst->module_name_version); -+ seq_printf(seq, "%-.8s", dst->date); - seq_printf(seq, "%8d ", dst->module_size); - seq_printf(seq, "%8d ", dst->mpb_size); - seq_printf(seq, "0x%04x", dst->module_flags); -@@ -1250,7 +1240,6 @@ static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v) - // == (allow) 512d bytes (max) - static u16 *work16 = (u16 *) work32; - int token; -- char tmp[16 + 1]; - - token = i2o_parm_field_get(d, 0xF100, -1, &work32, sizeof(work32)); - -@@ -1262,14 +1251,10 @@ static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v) - seq_printf(seq, "Device Class : %s\n", i2o_get_class_name(work16[0])); - seq_printf(seq, "Owner TID : %0#5x\n", work16[2]); - seq_printf(seq, "Parent TID : %0#5x\n", work16[3]); -- seq_printf(seq, "Vendor info : %s\n", -- chtostr(tmp, (u8 *) (work32 + 2), 16)); -- seq_printf(seq, "Product info : %s\n", -- chtostr(tmp, (u8 *) (work32 + 6), 16)); -- seq_printf(seq, "Description : %s\n", -- chtostr(tmp, (u8 *) (work32 + 10), 16)); -- seq_printf(seq, "Product rev. : %s\n", -- chtostr(tmp, (u8 *) (work32 + 14), 8)); -+ seq_printf(seq, "Vendor info : %.16s\n", (u8 *) (work32 + 2)); -+ seq_printf(seq, "Product info : %.16s\n", (u8 *) (work32 + 6)); -+ seq_printf(seq, "Description : %.16s\n", (u8 *) (work32 + 10)); -+ seq_printf(seq, "Product rev. : %.8s\n", (u8 *) (work32 + 14)); - - seq_printf(seq, "Serial number : "); - print_serial_number(seq, (u8 *) (work32 + 16), -@@ -1306,8 +1291,6 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v) - u8 pad[256]; // allow up to 256 byte (max) serial number - } result; - -- char tmp[24 + 1]; -- - token = i2o_parm_field_get(d, 0xF101, -1, &result, sizeof(result)); - - if (token < 0) { -@@ -1316,10 +1299,8 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v) - } - - seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid); -- seq_printf(seq, "Module name : %s\n", -- chtostr(tmp, result.module_name, 24)); -- seq_printf(seq, "Module revision : %s\n", -- chtostr(tmp, result.module_rev, 8)); -+ seq_printf(seq, "Module name : %.24s\n", result.module_name); -+ seq_printf(seq, "Module revision : %.8s\n", result.module_rev); - - seq_printf(seq, "Serial number : "); - print_serial_number(seq, result.serial_number, sizeof(result) - 36); -@@ -1343,8 +1324,6 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v) - u8 instance_number[4]; - } result; - -- char tmp[64 + 1]; -- - token = i2o_parm_field_get(d, 0xF102, -1, &result, sizeof(result)); - - if (token < 0) { -@@ -1352,14 +1331,10 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v) - return 0; - } - -- seq_printf(seq, "Device name : %s\n", -- chtostr(tmp, result.device_name, 64)); -- seq_printf(seq, "Service name : %s\n", -- chtostr(tmp, result.service_name, 64)); -- seq_printf(seq, "Physical name : %s\n", -- chtostr(tmp, result.physical_location, 64)); -- seq_printf(seq, "Instance number : %s\n", -- chtostr(tmp, result.instance_number, 4)); -+ seq_printf(seq, "Device name : %.64s\n", result.device_name); -+ seq_printf(seq, "Service name : %.64s\n", result.service_name); -+ seq_printf(seq, "Physical name : %.64s\n", result.physical_location); -+ seq_printf(seq, "Instance number : %.4s\n", result.instance_number); - - return 0; - } -diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c -index a8c08f3..155fe3d 100644 ---- a/drivers/message/i2o/iop.c -+++ b/drivers/message/i2o/iop.c -@@ -111,10 +111,10 @@ u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr) - - spin_lock_irqsave(&c->context_list_lock, flags); - -- if (unlikely(atomic_inc_and_test(&c->context_list_counter))) -- atomic_inc(&c->context_list_counter); -+ if (unlikely(atomic_inc_and_test_unchecked(&c->context_list_counter))) -+ atomic_inc_unchecked(&c->context_list_counter); - -- entry->context = atomic_read(&c->context_list_counter); -+ entry->context = atomic_read_unchecked(&c->context_list_counter); - - list_add(&entry->list, &c->context_list); - -@@ -1077,7 +1077,7 @@ struct i2o_controller *i2o_iop_alloc(void) - - #if BITS_PER_LONG == 64 - spin_lock_init(&c->context_list_lock); -- atomic_set(&c->context_list_counter, 0); -+ atomic_set_unchecked(&c->context_list_counter, 0); - INIT_LIST_HEAD(&c->context_list); - #endif - -diff --git a/drivers/mfd/abx500-core.c b/drivers/mfd/abx500-core.c -index 7ce65f4..e66e9bc 100644 ---- a/drivers/mfd/abx500-core.c -+++ b/drivers/mfd/abx500-core.c -@@ -15,7 +15,7 @@ static LIST_HEAD(abx500_list); - - struct abx500_device_entry { - struct list_head list; -- struct abx500_ops ops; -+ abx500_ops_no_const ops; - struct device *dev; - }; - -diff --git a/drivers/mfd/janz-cmodio.c b/drivers/mfd/janz-cmodio.c -index 965c480..71f2db9 100644 ---- a/drivers/mfd/janz-cmodio.c -+++ b/drivers/mfd/janz-cmodio.c -@@ -13,6 +13,7 @@ - - #include - #include -+#include - #include - #include - #include -diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c -index 3aa9a96..59cf685 100644 ---- a/drivers/misc/kgdbts.c -+++ b/drivers/misc/kgdbts.c -@@ -832,7 +832,7 @@ static void run_plant_and_detach_test(int is_early) - char before[BREAK_INSTR_SIZE]; - char after[BREAK_INSTR_SIZE]; - -- probe_kernel_read(before, (char *)kgdbts_break_test, -+ probe_kernel_read(before, ktla_ktva((char *)kgdbts_break_test), - BREAK_INSTR_SIZE); - init_simple_test(); - ts.tst = plant_and_detach_test; -@@ -840,7 +840,7 @@ static void run_plant_and_detach_test(int is_early) - /* Activate test with initial breakpoint */ - if (!is_early) - kgdb_breakpoint(); -- probe_kernel_read(after, (char *)kgdbts_break_test, -+ probe_kernel_read(after, ktla_ktva((char *)kgdbts_break_test), - BREAK_INSTR_SIZE); - if (memcmp(before, after, BREAK_INSTR_SIZE)) { - printk(KERN_CRIT "kgdbts: ERROR kgdb corrupted memory\n"); -diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c -index a981e2a..5ca0c8b 100644 ---- a/drivers/misc/lis3lv02d/lis3lv02d.c -+++ b/drivers/misc/lis3lv02d/lis3lv02d.c -@@ -466,7 +466,7 @@ static irqreturn_t lis302dl_interrupt(int irq, void *data) - * the lid is closed. This leads to interrupts as soon as a little move - * is done. - */ -- atomic_inc(&lis3->count); -+ atomic_inc_unchecked(&lis3->count); - - wake_up_interruptible(&lis3->misc_wait); - kill_fasync(&lis3->async_queue, SIGIO, POLL_IN); -@@ -552,7 +552,7 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file) - if (lis3->pm_dev) - pm_runtime_get_sync(lis3->pm_dev); - -- atomic_set(&lis3->count, 0); -+ atomic_set_unchecked(&lis3->count, 0); - return 0; - } - -@@ -585,7 +585,7 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf, - add_wait_queue(&lis3->misc_wait, &wait); - while (true) { - set_current_state(TASK_INTERRUPTIBLE); -- data = atomic_xchg(&lis3->count, 0); -+ data = atomic_xchg_unchecked(&lis3->count, 0); - if (data) - break; - -@@ -626,7 +626,7 @@ static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait) - struct lis3lv02d, miscdev); - - poll_wait(file, &lis3->misc_wait, wait); -- if (atomic_read(&lis3->count)) -+ if (atomic_read_unchecked(&lis3->count)) - return POLLIN | POLLRDNORM; - return 0; - } -diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h -index 2b1482a..5d33616 100644 ---- a/drivers/misc/lis3lv02d/lis3lv02d.h -+++ b/drivers/misc/lis3lv02d/lis3lv02d.h -@@ -266,7 +266,7 @@ struct lis3lv02d { - struct input_polled_dev *idev; /* input device */ - struct platform_device *pdev; /* platform device */ - struct regulator_bulk_data regulators[2]; -- atomic_t count; /* interrupt count after last read */ -+ atomic_unchecked_t count; /* interrupt count after last read */ - union axis_conversion ac; /* hw -> logical axis */ - int mapped_btns[3]; - -diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c -index 2f30bad..c4c13d0 100644 ---- a/drivers/misc/sgi-gru/gruhandles.c -+++ b/drivers/misc/sgi-gru/gruhandles.c -@@ -44,8 +44,8 @@ static void update_mcs_stats(enum mcs_op op, unsigned long clks) - unsigned long nsec; - - nsec = CLKS2NSEC(clks); -- atomic_long_inc(&mcs_op_statistics[op].count); -- atomic_long_add(nsec, &mcs_op_statistics[op].total); -+ atomic_long_inc_unchecked(&mcs_op_statistics[op].count); -+ atomic_long_add_unchecked(nsec, &mcs_op_statistics[op].total); - if (mcs_op_statistics[op].max < nsec) - mcs_op_statistics[op].max = nsec; - } -diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c -index 950dbe9..eeef0f8 100644 ---- a/drivers/misc/sgi-gru/gruprocfs.c -+++ b/drivers/misc/sgi-gru/gruprocfs.c -@@ -32,9 +32,9 @@ - - #define printstat(s, f) printstat_val(s, &gru_stats.f, #f) - --static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id) -+static void printstat_val(struct seq_file *s, atomic_long_unchecked_t *v, char *id) - { -- unsigned long val = atomic_long_read(v); -+ unsigned long val = atomic_long_read_unchecked(v); - - seq_printf(s, "%16lu %s\n", val, id); - } -@@ -134,8 +134,8 @@ static int mcs_statistics_show(struct seq_file *s, void *p) - - seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks"); - for (op = 0; op < mcsop_last; op++) { -- count = atomic_long_read(&mcs_op_statistics[op].count); -- total = atomic_long_read(&mcs_op_statistics[op].total); -+ count = atomic_long_read_unchecked(&mcs_op_statistics[op].count); -+ total = atomic_long_read_unchecked(&mcs_op_statistics[op].total); - max = mcs_op_statistics[op].max; - seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, - count ? total / count : 0, max); -diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h -index 5c3ce24..4915ccb 100644 ---- a/drivers/misc/sgi-gru/grutables.h -+++ b/drivers/misc/sgi-gru/grutables.h -@@ -167,82 +167,82 @@ extern unsigned int gru_max_gids; - * GRU statistics. - */ - struct gru_stats_s { -- atomic_long_t vdata_alloc; -- atomic_long_t vdata_free; -- atomic_long_t gts_alloc; -- atomic_long_t gts_free; -- atomic_long_t gms_alloc; -- atomic_long_t gms_free; -- atomic_long_t gts_double_allocate; -- atomic_long_t assign_context; -- atomic_long_t assign_context_failed; -- atomic_long_t free_context; -- atomic_long_t load_user_context; -- atomic_long_t load_kernel_context; -- atomic_long_t lock_kernel_context; -- atomic_long_t unlock_kernel_context; -- atomic_long_t steal_user_context; -- atomic_long_t steal_kernel_context; -- atomic_long_t steal_context_failed; -- atomic_long_t nopfn; -- atomic_long_t asid_new; -- atomic_long_t asid_next; -- atomic_long_t asid_wrap; -- atomic_long_t asid_reuse; -- atomic_long_t intr; -- atomic_long_t intr_cbr; -- atomic_long_t intr_tfh; -- atomic_long_t intr_spurious; -- atomic_long_t intr_mm_lock_failed; -- atomic_long_t call_os; -- atomic_long_t call_os_wait_queue; -- atomic_long_t user_flush_tlb; -- atomic_long_t user_unload_context; -- atomic_long_t user_exception; -- atomic_long_t set_context_option; -- atomic_long_t check_context_retarget_intr; -- atomic_long_t check_context_unload; -- atomic_long_t tlb_dropin; -- atomic_long_t tlb_preload_page; -- atomic_long_t tlb_dropin_fail_no_asid; -- atomic_long_t tlb_dropin_fail_upm; -- atomic_long_t tlb_dropin_fail_invalid; -- atomic_long_t tlb_dropin_fail_range_active; -- atomic_long_t tlb_dropin_fail_idle; -- atomic_long_t tlb_dropin_fail_fmm; -- atomic_long_t tlb_dropin_fail_no_exception; -- atomic_long_t tfh_stale_on_fault; -- atomic_long_t mmu_invalidate_range; -- atomic_long_t mmu_invalidate_page; -- atomic_long_t flush_tlb; -- atomic_long_t flush_tlb_gru; -- atomic_long_t flush_tlb_gru_tgh; -- atomic_long_t flush_tlb_gru_zero_asid; -- -- atomic_long_t copy_gpa; -- atomic_long_t read_gpa; -- -- atomic_long_t mesq_receive; -- atomic_long_t mesq_receive_none; -- atomic_long_t mesq_send; -- atomic_long_t mesq_send_failed; -- atomic_long_t mesq_noop; -- atomic_long_t mesq_send_unexpected_error; -- atomic_long_t mesq_send_lb_overflow; -- atomic_long_t mesq_send_qlimit_reached; -- atomic_long_t mesq_send_amo_nacked; -- atomic_long_t mesq_send_put_nacked; -- atomic_long_t mesq_page_overflow; -- atomic_long_t mesq_qf_locked; -- atomic_long_t mesq_qf_noop_not_full; -- atomic_long_t mesq_qf_switch_head_failed; -- atomic_long_t mesq_qf_unexpected_error; -- atomic_long_t mesq_noop_unexpected_error; -- atomic_long_t mesq_noop_lb_overflow; -- atomic_long_t mesq_noop_qlimit_reached; -- atomic_long_t mesq_noop_amo_nacked; -- atomic_long_t mesq_noop_put_nacked; -- atomic_long_t mesq_noop_page_overflow; -+ atomic_long_unchecked_t vdata_alloc; -+ atomic_long_unchecked_t vdata_free; -+ atomic_long_unchecked_t gts_alloc; -+ atomic_long_unchecked_t gts_free; -+ atomic_long_unchecked_t gms_alloc; -+ atomic_long_unchecked_t gms_free; -+ atomic_long_unchecked_t gts_double_allocate; -+ atomic_long_unchecked_t assign_context; -+ atomic_long_unchecked_t assign_context_failed; -+ atomic_long_unchecked_t free_context; -+ atomic_long_unchecked_t load_user_context; -+ atomic_long_unchecked_t load_kernel_context; -+ atomic_long_unchecked_t lock_kernel_context; -+ atomic_long_unchecked_t unlock_kernel_context; -+ atomic_long_unchecked_t steal_user_context; -+ atomic_long_unchecked_t steal_kernel_context; -+ atomic_long_unchecked_t steal_context_failed; -+ atomic_long_unchecked_t nopfn; -+ atomic_long_unchecked_t asid_new; -+ atomic_long_unchecked_t asid_next; -+ atomic_long_unchecked_t asid_wrap; -+ atomic_long_unchecked_t asid_reuse; -+ atomic_long_unchecked_t intr; -+ atomic_long_unchecked_t intr_cbr; -+ atomic_long_unchecked_t intr_tfh; -+ atomic_long_unchecked_t intr_spurious; -+ atomic_long_unchecked_t intr_mm_lock_failed; -+ atomic_long_unchecked_t call_os; -+ atomic_long_unchecked_t call_os_wait_queue; -+ atomic_long_unchecked_t user_flush_tlb; -+ atomic_long_unchecked_t user_unload_context; -+ atomic_long_unchecked_t user_exception; -+ atomic_long_unchecked_t set_context_option; -+ atomic_long_unchecked_t check_context_retarget_intr; -+ atomic_long_unchecked_t check_context_unload; -+ atomic_long_unchecked_t tlb_dropin; -+ atomic_long_unchecked_t tlb_preload_page; -+ atomic_long_unchecked_t tlb_dropin_fail_no_asid; -+ atomic_long_unchecked_t tlb_dropin_fail_upm; -+ atomic_long_unchecked_t tlb_dropin_fail_invalid; -+ atomic_long_unchecked_t tlb_dropin_fail_range_active; -+ atomic_long_unchecked_t tlb_dropin_fail_idle; -+ atomic_long_unchecked_t tlb_dropin_fail_fmm; -+ atomic_long_unchecked_t tlb_dropin_fail_no_exception; -+ atomic_long_unchecked_t tfh_stale_on_fault; -+ atomic_long_unchecked_t mmu_invalidate_range; -+ atomic_long_unchecked_t mmu_invalidate_page; -+ atomic_long_unchecked_t flush_tlb; -+ atomic_long_unchecked_t flush_tlb_gru; -+ atomic_long_unchecked_t flush_tlb_gru_tgh; -+ atomic_long_unchecked_t flush_tlb_gru_zero_asid; -+ -+ atomic_long_unchecked_t copy_gpa; -+ atomic_long_unchecked_t read_gpa; -+ -+ atomic_long_unchecked_t mesq_receive; -+ atomic_long_unchecked_t mesq_receive_none; -+ atomic_long_unchecked_t mesq_send; -+ atomic_long_unchecked_t mesq_send_failed; -+ atomic_long_unchecked_t mesq_noop; -+ atomic_long_unchecked_t mesq_send_unexpected_error; -+ atomic_long_unchecked_t mesq_send_lb_overflow; -+ atomic_long_unchecked_t mesq_send_qlimit_reached; -+ atomic_long_unchecked_t mesq_send_amo_nacked; -+ atomic_long_unchecked_t mesq_send_put_nacked; -+ atomic_long_unchecked_t mesq_page_overflow; -+ atomic_long_unchecked_t mesq_qf_locked; -+ atomic_long_unchecked_t mesq_qf_noop_not_full; -+ atomic_long_unchecked_t mesq_qf_switch_head_failed; -+ atomic_long_unchecked_t mesq_qf_unexpected_error; -+ atomic_long_unchecked_t mesq_noop_unexpected_error; -+ atomic_long_unchecked_t mesq_noop_lb_overflow; -+ atomic_long_unchecked_t mesq_noop_qlimit_reached; -+ atomic_long_unchecked_t mesq_noop_amo_nacked; -+ atomic_long_unchecked_t mesq_noop_put_nacked; -+ atomic_long_unchecked_t mesq_noop_page_overflow; - - }; - -@@ -251,8 +251,8 @@ enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync, - tghop_invalidate, mcsop_last}; - - struct mcs_op_statistic { -- atomic_long_t count; -- atomic_long_t total; -+ atomic_long_unchecked_t count; -+ atomic_long_unchecked_t total; - unsigned long max; - }; - -@@ -275,7 +275,7 @@ extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; - - #define STAT(id) do { \ - if (gru_options & OPT_STATS) \ -- atomic_long_inc(&gru_stats.id); \ -+ atomic_long_inc_unchecked(&gru_stats.id); \ - } while (0) - - #ifdef CONFIG_SGI_GRU_DEBUG -diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h -index c862cd4..0d176fe 100644 ---- a/drivers/misc/sgi-xp/xp.h -+++ b/drivers/misc/sgi-xp/xp.h -@@ -288,7 +288,7 @@ struct xpc_interface { - xpc_notify_func, void *); - void (*received) (short, int, void *); - enum xp_retval (*partid_to_nasids) (short, void *); --}; -+} __no_const; - - extern struct xpc_interface xpc_interface; - -diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h -index b94d5f7..7f494c5 100644 ---- a/drivers/misc/sgi-xp/xpc.h -+++ b/drivers/misc/sgi-xp/xpc.h -@@ -835,6 +835,7 @@ struct xpc_arch_operations { - void (*received_payload) (struct xpc_channel *, void *); - void (*notify_senders_of_disconnect) (struct xpc_channel *); - }; -+typedef struct xpc_arch_operations __no_const xpc_arch_operations_no_const; - - /* struct xpc_partition act_state values (for XPC HB) */ - -@@ -876,7 +877,7 @@ extern struct xpc_registration xpc_registrations[]; - /* found in xpc_main.c */ - extern struct device *xpc_part; - extern struct device *xpc_chan; --extern struct xpc_arch_operations xpc_arch_ops; -+extern xpc_arch_operations_no_const xpc_arch_ops; - extern int xpc_disengage_timelimit; - extern int xpc_disengage_timedout; - extern int xpc_activate_IRQ_rcvd; -diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c -index d971817..3805cce 100644 ---- a/drivers/misc/sgi-xp/xpc_main.c -+++ b/drivers/misc/sgi-xp/xpc_main.c -@@ -166,7 +166,7 @@ static struct notifier_block xpc_die_notifier = { - .notifier_call = xpc_system_die, - }; - --struct xpc_arch_operations xpc_arch_ops; -+xpc_arch_operations_no_const xpc_arch_ops; - - /* - * Timer function to enforce the timelimit on the partition disengage. -diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c -index 504da71..9722d43 100644 ---- a/drivers/mmc/host/sdhci-pci.c -+++ b/drivers/mmc/host/sdhci-pci.c -@@ -653,7 +653,7 @@ static const struct sdhci_pci_fixes sdhci_via = { - .probe = via_probe, - }; - --static const struct pci_device_id pci_ids[] __devinitdata = { -+static const struct pci_device_id pci_ids[] __devinitconst = { - { - .vendor = PCI_VENDOR_ID_RICOH, - .device = PCI_DEVICE_ID_RICOH_R5C822, -diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c -index a4eb8b5..8c0628f 100644 ---- a/drivers/mtd/devices/doc2000.c -+++ b/drivers/mtd/devices/doc2000.c -@@ -753,7 +753,7 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len, - - /* The ECC will not be calculated correctly if less than 512 is written */ - /* DBB- -- if (len != 0x200 && eccbuf) -+ if (len != 0x200) - printk(KERN_WARNING - "ECC needs a full sector write (adr: %lx size %lx)\n", - (long) to, (long) len); -diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c -index 0650aaf..7718762 100644 ---- a/drivers/mtd/nand/denali.c -+++ b/drivers/mtd/nand/denali.c -@@ -26,6 +26,7 @@ - #include - #include - #include -+#include - - #include "denali.h" - -diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c -index 51b9d6a..52af9a7 100644 ---- a/drivers/mtd/nftlmount.c -+++ b/drivers/mtd/nftlmount.c -@@ -24,6 +24,7 @@ - #include - #include - #include -+#include - #include - #include - #include -diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c -index 21609f9..ba4f95b 100644 ---- a/drivers/net/bonding/bond_sysfs.c -+++ b/drivers/net/bonding/bond_sysfs.c -@@ -1060,7 +1060,7 @@ static ssize_t bonding_store_primary(struct device *d, - goto out; - } - -- sscanf(buf, "%16s", ifname); /* IFNAMSIZ */ -+ sscanf(buf, "%15s", ifname); /* IFNAMSIZ */ - - /* check to see if we are clearing primary */ - if (!strlen(ifname) || buf[0] == '\n') { -@@ -1237,7 +1237,7 @@ static ssize_t bonding_store_active_slave(struct device *d, - goto out; - } - -- sscanf(buf, "%16s", ifname); /* IFNAMSIZ */ -+ sscanf(buf, "%15s", ifname); /* IFNAMSIZ */ - - /* check to see if we are clearing active */ - if (!strlen(ifname) || buf[0] == '\n') { -diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c -index 57d64b8..623dd86 100644 ---- a/drivers/net/ethernet/atheros/atlx/atl2.c -+++ b/drivers/net/ethernet/atheros/atlx/atl2.c -@@ -2845,7 +2845,7 @@ static void atl2_force_ps(struct atl2_hw *hw) - */ - - #define ATL2_PARAM(X, desc) \ -- static const int __devinitdata X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ -+ static const int __devinitconst X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ - MODULE_PARM(X, "1-" __MODULE_STRING(ATL2_MAX_NIC) "i"); \ - MODULE_PARM_DESC(X, desc); - #else -diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c -index b028b5e..2ef481f 100644 ---- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c -+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c -@@ -3051,9 +3051,8 @@ static void bnx2x_drv_info_ether_stat(struct bnx2x *bp) - struct eth_stats_info *ether_stat = - &bp->slowpath->drv_info_to_mcp.ether_stat; - -- /* leave last char as NULL */ -- memcpy(ether_stat->version, DRV_MODULE_VERSION, -- ETH_STAT_INFO_VERSION_LEN - 1); -+ strlcpy(ether_stat->version, DRV_MODULE_VERSION, -+ ETH_STAT_INFO_VERSION_LEN); - - bp->sp_objs[0].mac_obj.get_n_elements(bp, &bp->sp_objs[0].mac_obj, - DRV_INFO_ETH_STAT_NUM_MACS_REQUIRED, -diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h -index f83e033..8b4f43a 100644 ---- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h -+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h -@@ -486,7 +486,7 @@ struct bnx2x_rx_mode_obj { - - int (*wait_comp)(struct bnx2x *bp, - struct bnx2x_rx_mode_ramrod_params *p); --}; -+} __no_const; - - /********************** Set multicast group ***********************************/ - -diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h -index 6d52cb2..bc95640 100644 ---- a/drivers/net/ethernet/broadcom/tg3.h -+++ b/drivers/net/ethernet/broadcom/tg3.h -@@ -140,6 +140,7 @@ - #define CHIPREV_ID_5750_A0 0x4000 - #define CHIPREV_ID_5750_A1 0x4001 - #define CHIPREV_ID_5750_A3 0x4003 -+#define CHIPREV_ID_5750_C1 0x4201 - #define CHIPREV_ID_5750_C2 0x4202 - #define CHIPREV_ID_5752_A0_HW 0x5000 - #define CHIPREV_ID_5752_A0 0x6000 -diff --git a/drivers/net/ethernet/chelsio/cxgb3/l2t.h b/drivers/net/ethernet/chelsio/cxgb3/l2t.h -index 8cffcdf..aadf043 100644 ---- a/drivers/net/ethernet/chelsio/cxgb3/l2t.h -+++ b/drivers/net/ethernet/chelsio/cxgb3/l2t.h -@@ -87,7 +87,7 @@ typedef void (*arp_failure_handler_func)(struct t3cdev * dev, - */ - struct l2t_skb_cb { - arp_failure_handler_func arp_failure_handler; --}; -+} __no_const; - - #define L2T_SKB_CB(skb) ((struct l2t_skb_cb *)(skb)->cb) - -diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c -index f879e92..726f20f 100644 ---- a/drivers/net/ethernet/dec/tulip/de4x5.c -+++ b/drivers/net/ethernet/dec/tulip/de4x5.c -@@ -5388,7 +5388,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) - for (i=0; idev_addr[i]; - } -- if (copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; -+ if (ioc->len > sizeof tmp.addr || copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; - break; - - case DE4X5_SET_HWADDR: /* Set the hardware address */ -@@ -5428,7 +5428,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) - spin_lock_irqsave(&lp->lock, flags); - memcpy(&statbuf, &lp->pktStats, ioc->len); - spin_unlock_irqrestore(&lp->lock, flags); -- if (copy_to_user(ioc->data, &statbuf, ioc->len)) -+ if (ioc->len > sizeof statbuf || copy_to_user(ioc->data, &statbuf, ioc->len)) - return -EFAULT; - break; - } -diff --git a/drivers/net/ethernet/dec/tulip/eeprom.c b/drivers/net/ethernet/dec/tulip/eeprom.c -index ed7d1dc..d426748 100644 ---- a/drivers/net/ethernet/dec/tulip/eeprom.c -+++ b/drivers/net/ethernet/dec/tulip/eeprom.c -@@ -79,7 +79,7 @@ static struct eeprom_fixup eeprom_fixups[] __devinitdata = { - {NULL}}; - - --static const char *block_name[] __devinitdata = { -+static const char *block_name[] __devinitconst = { - "21140 non-MII", - "21140 MII PHY", - "21142 Serial PHY", -diff --git a/drivers/net/ethernet/dec/tulip/uli526x.c b/drivers/net/ethernet/dec/tulip/uli526x.c -index 75d45f8..3d9c55b 100644 ---- a/drivers/net/ethernet/dec/tulip/uli526x.c -+++ b/drivers/net/ethernet/dec/tulip/uli526x.c -@@ -129,7 +129,7 @@ struct uli526x_board_info { - struct uli_phy_ops { - void (*write)(struct uli526x_board_info *, u8, u8, u16); - u16 (*read)(struct uli526x_board_info *, u8, u8); -- } phy; -+ } __no_const phy; - struct net_device *next_dev; /* next device */ - struct pci_dev *pdev; /* PCI device */ - spinlock_t lock; -diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c -index 4d1ffca..7c1ec4d 100644 ---- a/drivers/net/ethernet/dec/tulip/winbond-840.c -+++ b/drivers/net/ethernet/dec/tulip/winbond-840.c -@@ -236,7 +236,7 @@ struct pci_id_info { - int drv_flags; /* Driver use, intended as capability flags. */ - }; - --static const struct pci_id_info pci_id_tbl[] __devinitdata = { -+static const struct pci_id_info pci_id_tbl[] __devinitconst = { - { /* Sometime a Level-One switch card. */ - "Winbond W89c840", CanHaveMII | HasBrokenTx | FDXOnNoMII}, - { "Winbond W89c840", CanHaveMII | HasBrokenTx}, -diff --git a/drivers/net/ethernet/dlink/sundance.c b/drivers/net/ethernet/dlink/sundance.c -index d7bb52a..3b83588 100644 ---- a/drivers/net/ethernet/dlink/sundance.c -+++ b/drivers/net/ethernet/dlink/sundance.c -@@ -218,7 +218,7 @@ enum { - struct pci_id_info { - const char *name; - }; --static const struct pci_id_info pci_id_tbl[] __devinitdata = { -+static const struct pci_id_info pci_id_tbl[] __devinitconst = { - {"D-Link DFE-550TX FAST Ethernet Adapter"}, - {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"}, - {"D-Link DFE-580TX 4 port Server Adapter"}, -diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c -index 78b8aa8..dd6323a 100644 ---- a/drivers/net/ethernet/emulex/benet/be_main.c -+++ b/drivers/net/ethernet/emulex/benet/be_main.c -@@ -403,7 +403,7 @@ static void accumulate_16bit_val(u32 *acc, u16 val) - - if (wrapped) - newacc += 65536; -- ACCESS_ONCE(*acc) = newacc; -+ ACCESS_ONCE_RW(*acc) = newacc; - } - - void be_parse_stats(struct be_adapter *adapter) -diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c -index 74d749e..eefb1bd 100644 ---- a/drivers/net/ethernet/faraday/ftgmac100.c -+++ b/drivers/net/ethernet/faraday/ftgmac100.c -@@ -31,6 +31,8 @@ - #include - #include - #include -+#include -+#include - #include - - #include "ftgmac100.h" -diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c -index b901a01..1ff32ee 100644 ---- a/drivers/net/ethernet/faraday/ftmac100.c -+++ b/drivers/net/ethernet/faraday/ftmac100.c -@@ -31,6 +31,8 @@ - #include - #include - #include -+#include -+#include - - #include "ftmac100.h" - -diff --git a/drivers/net/ethernet/fealnx.c b/drivers/net/ethernet/fealnx.c -index 9d71c9c..0e4a0ac 100644 ---- a/drivers/net/ethernet/fealnx.c -+++ b/drivers/net/ethernet/fealnx.c -@@ -150,7 +150,7 @@ struct chip_info { - int flags; - }; - --static const struct chip_info skel_netdrv_tbl[] __devinitdata = { -+static const struct chip_info skel_netdrv_tbl[] __devinitconst = { - { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, - { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR }, - { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, -diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h -index ed5b409..ec37828 100644 ---- a/drivers/net/ethernet/intel/e1000e/hw.h -+++ b/drivers/net/ethernet/intel/e1000e/hw.h -@@ -797,6 +797,7 @@ struct e1000_mac_operations { - void (*rar_set)(struct e1000_hw *, u8 *, u32); - s32 (*read_mac_addr)(struct e1000_hw *); - }; -+typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; - - /* - * When to use various PHY register access functions: -@@ -837,6 +838,7 @@ struct e1000_phy_operations { - void (*power_up)(struct e1000_hw *); - void (*power_down)(struct e1000_hw *); - }; -+typedef struct e1000_phy_operations __no_const e1000_phy_operations_no_const; - - /* Function pointers for the NVM. */ - struct e1000_nvm_operations { -@@ -849,9 +851,10 @@ struct e1000_nvm_operations { - s32 (*validate)(struct e1000_hw *); - s32 (*write)(struct e1000_hw *, u16, u16, u16 *); - }; -+typedef struct e1000_nvm_operations __no_const e1000_nvm_operations_no_const; - - struct e1000_mac_info { -- struct e1000_mac_operations ops; -+ e1000_mac_operations_no_const ops; - u8 addr[ETH_ALEN]; - u8 perm_addr[ETH_ALEN]; - -@@ -892,7 +895,7 @@ struct e1000_mac_info { - }; - - struct e1000_phy_info { -- struct e1000_phy_operations ops; -+ e1000_phy_operations_no_const ops; - - enum e1000_phy_type type; - -@@ -926,7 +929,7 @@ struct e1000_phy_info { - }; - - struct e1000_nvm_info { -- struct e1000_nvm_operations ops; -+ e1000_nvm_operations_no_const ops; - - enum e1000_nvm_type type; - enum e1000_nvm_override override; -diff --git a/drivers/net/ethernet/intel/igb/e1000_hw.h b/drivers/net/ethernet/intel/igb/e1000_hw.h -index c2a51dc..c2bd262 100644 ---- a/drivers/net/ethernet/intel/igb/e1000_hw.h -+++ b/drivers/net/ethernet/intel/igb/e1000_hw.h -@@ -327,6 +327,7 @@ struct e1000_mac_operations { - void (*release_swfw_sync)(struct e1000_hw *, u16); - - }; -+typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; - - struct e1000_phy_operations { - s32 (*acquire)(struct e1000_hw *); -@@ -343,6 +344,7 @@ struct e1000_phy_operations { - s32 (*set_d3_lplu_state)(struct e1000_hw *, bool); - s32 (*write_reg)(struct e1000_hw *, u32, u16); - }; -+typedef struct e1000_phy_operations __no_const e1000_phy_operations_no_const; - - struct e1000_nvm_operations { - s32 (*acquire)(struct e1000_hw *); -@@ -353,6 +355,7 @@ struct e1000_nvm_operations { - s32 (*validate)(struct e1000_hw *); - s32 (*valid_led_default)(struct e1000_hw *, u16 *); - }; -+typedef struct e1000_nvm_operations __no_const e1000_nvm_operations_no_const; - - struct e1000_info { - s32 (*get_invariants)(struct e1000_hw *); -@@ -364,7 +367,7 @@ struct e1000_info { - extern const struct e1000_info e1000_82575_info; - - struct e1000_mac_info { -- struct e1000_mac_operations ops; -+ e1000_mac_operations_no_const ops; - - u8 addr[6]; - u8 perm_addr[6]; -@@ -402,7 +405,7 @@ struct e1000_mac_info { - }; - - struct e1000_phy_info { -- struct e1000_phy_operations ops; -+ e1000_phy_operations_no_const ops; - - enum e1000_phy_type type; - -@@ -437,7 +440,7 @@ struct e1000_phy_info { - }; - - struct e1000_nvm_info { -- struct e1000_nvm_operations ops; -+ e1000_nvm_operations_no_const ops; - enum e1000_nvm_type type; - enum e1000_nvm_override override; - -@@ -482,6 +485,7 @@ struct e1000_mbx_operations { - s32 (*check_for_ack)(struct e1000_hw *, u16); - s32 (*check_for_rst)(struct e1000_hw *, u16); - }; -+typedef struct e1000_mbx_operations __no_const e1000_mbx_operations_no_const; - - struct e1000_mbx_stats { - u32 msgs_tx; -@@ -493,7 +497,7 @@ struct e1000_mbx_stats { - }; - - struct e1000_mbx_info { -- struct e1000_mbx_operations ops; -+ e1000_mbx_operations_no_const ops; - struct e1000_mbx_stats stats; - u32 timeout; - u32 usec_delay; -diff --git a/drivers/net/ethernet/intel/igbvf/vf.h b/drivers/net/ethernet/intel/igbvf/vf.h -index 57db3c6..aa825fc 100644 ---- a/drivers/net/ethernet/intel/igbvf/vf.h -+++ b/drivers/net/ethernet/intel/igbvf/vf.h -@@ -189,9 +189,10 @@ struct e1000_mac_operations { - s32 (*read_mac_addr)(struct e1000_hw *); - s32 (*set_vfta)(struct e1000_hw *, u16, bool); - }; -+typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; - - struct e1000_mac_info { -- struct e1000_mac_operations ops; -+ e1000_mac_operations_no_const ops; - u8 addr[6]; - u8 perm_addr[6]; - -@@ -213,6 +214,7 @@ struct e1000_mbx_operations { - s32 (*check_for_ack)(struct e1000_hw *); - s32 (*check_for_rst)(struct e1000_hw *); - }; -+typedef struct e1000_mbx_operations __no_const e1000_mbx_operations_no_const; - - struct e1000_mbx_stats { - u32 msgs_tx; -@@ -224,7 +226,7 @@ struct e1000_mbx_stats { - }; - - struct e1000_mbx_info { -- struct e1000_mbx_operations ops; -+ e1000_mbx_operations_no_const ops; - struct e1000_mbx_stats stats; - u32 timeout; - u32 usec_delay; -diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c -index 3456d56..b688d81 100644 ---- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c -+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c -@@ -884,7 +884,7 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter) - /* store the new cycle speed */ - adapter->cycle_speed = cycle_speed; - -- ACCESS_ONCE(adapter->base_incval) = incval; -+ ACCESS_ONCE_RW(adapter->base_incval) = incval; - smp_mb(); - - /* grab the ptp lock */ -diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h -index 0722f33..771758a 100644 ---- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h -+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h -@@ -2800,6 +2800,7 @@ struct ixgbe_eeprom_operations { - s32 (*update_checksum)(struct ixgbe_hw *); - u16 (*calc_checksum)(struct ixgbe_hw *); - }; -+typedef struct ixgbe_eeprom_operations __no_const ixgbe_eeprom_operations_no_const; - - struct ixgbe_mac_operations { - s32 (*init_hw)(struct ixgbe_hw *); -@@ -2866,6 +2867,7 @@ struct ixgbe_mac_operations { - s32 (*get_thermal_sensor_data)(struct ixgbe_hw *); - s32 (*init_thermal_sensor_thresh)(struct ixgbe_hw *hw); - }; -+typedef struct ixgbe_mac_operations __no_const ixgbe_mac_operations_no_const; - - struct ixgbe_phy_operations { - s32 (*identify)(struct ixgbe_hw *); -@@ -2885,9 +2887,10 @@ struct ixgbe_phy_operations { - s32 (*write_i2c_eeprom)(struct ixgbe_hw *, u8, u8); - s32 (*check_overtemp)(struct ixgbe_hw *); - }; -+typedef struct ixgbe_phy_operations __no_const ixgbe_phy_operations_no_const; - - struct ixgbe_eeprom_info { -- struct ixgbe_eeprom_operations ops; -+ ixgbe_eeprom_operations_no_const ops; - enum ixgbe_eeprom_type type; - u32 semaphore_delay; - u16 word_size; -@@ -2897,7 +2900,7 @@ struct ixgbe_eeprom_info { - - #define IXGBE_FLAGS_DOUBLE_RESET_REQUIRED 0x01 - struct ixgbe_mac_info { -- struct ixgbe_mac_operations ops; -+ ixgbe_mac_operations_no_const ops; - enum ixgbe_mac_type type; - u8 addr[ETH_ALEN]; - u8 perm_addr[ETH_ALEN]; -@@ -2927,7 +2930,7 @@ struct ixgbe_mac_info { - }; - - struct ixgbe_phy_info { -- struct ixgbe_phy_operations ops; -+ ixgbe_phy_operations_no_const ops; - struct mdio_if_info mdio; - enum ixgbe_phy_type type; - u32 id; -@@ -2955,6 +2958,7 @@ struct ixgbe_mbx_operations { - s32 (*check_for_ack)(struct ixgbe_hw *, u16); - s32 (*check_for_rst)(struct ixgbe_hw *, u16); - }; -+typedef struct ixgbe_mbx_operations __no_const ixgbe_mbx_operations_no_const; - - struct ixgbe_mbx_stats { - u32 msgs_tx; -@@ -2966,7 +2970,7 @@ struct ixgbe_mbx_stats { - }; - - struct ixgbe_mbx_info { -- struct ixgbe_mbx_operations ops; -+ ixgbe_mbx_operations_no_const ops; - struct ixgbe_mbx_stats stats; - u32 timeout; - u32 usec_delay; -diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h -index 25c951d..cc7cf33 100644 ---- a/drivers/net/ethernet/intel/ixgbevf/vf.h -+++ b/drivers/net/ethernet/intel/ixgbevf/vf.h -@@ -70,6 +70,7 @@ struct ixgbe_mac_operations { - s32 (*clear_vfta)(struct ixgbe_hw *); - s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool); - }; -+typedef struct ixgbe_mac_operations __no_const ixgbe_mac_operations_no_const; - - enum ixgbe_mac_type { - ixgbe_mac_unknown = 0, -@@ -79,7 +80,7 @@ enum ixgbe_mac_type { - }; - - struct ixgbe_mac_info { -- struct ixgbe_mac_operations ops; -+ ixgbe_mac_operations_no_const ops; - u8 addr[6]; - u8 perm_addr[6]; - -@@ -103,6 +104,7 @@ struct ixgbe_mbx_operations { - s32 (*check_for_ack)(struct ixgbe_hw *); - s32 (*check_for_rst)(struct ixgbe_hw *); - }; -+typedef struct ixgbe_mbx_operations __no_const ixgbe_mbx_operations_no_const; - - struct ixgbe_mbx_stats { - u32 msgs_tx; -@@ -114,7 +116,7 @@ struct ixgbe_mbx_stats { - }; - - struct ixgbe_mbx_info { -- struct ixgbe_mbx_operations ops; -+ ixgbe_mbx_operations_no_const ops; - struct ixgbe_mbx_stats stats; - u32 timeout; - u32 udelay; -diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c -index 5d367958..b799ab12 100644 ---- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c -+++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c -@@ -237,7 +237,7 @@ static int mlx4_en_dcbnl_ieee_setmaxrate(struct net_device *dev, - if (err) - return err; - -- memcpy(priv->maxrate, tmp, sizeof(*priv->maxrate)); -+ memcpy(priv->maxrate, tmp, sizeof(priv->maxrate)); - - return 0; - } -diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.h b/drivers/net/ethernet/neterion/vxge/vxge-config.h -index 9e0c1ee..8471f77 100644 ---- a/drivers/net/ethernet/neterion/vxge/vxge-config.h -+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.h -@@ -514,7 +514,7 @@ struct vxge_hw_uld_cbs { - void (*link_down)(struct __vxge_hw_device *devh); - void (*crit_err)(struct __vxge_hw_device *devh, - enum vxge_hw_event type, u64 ext_data); --}; -+} __no_const; - - /* - * struct __vxge_hw_blockpool_entry - Block private data structure -diff --git a/drivers/net/ethernet/neterion/vxge/vxge-traffic.h b/drivers/net/ethernet/neterion/vxge/vxge-traffic.h -index 4a518a3..936b334 100644 ---- a/drivers/net/ethernet/neterion/vxge/vxge-traffic.h -+++ b/drivers/net/ethernet/neterion/vxge/vxge-traffic.h -@@ -2088,7 +2088,7 @@ struct vxge_hw_mempool_cbs { - struct vxge_hw_mempool_dma *dma_object, - u32 index, - u32 is_last); --}; -+} __no_const; - - #define VXGE_HW_VIRTUAL_PATH_HANDLE(vpath) \ - ((struct __vxge_hw_vpath_handle *)(vpath)->vpath_handles.next) -diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c -index 6c1c396..b904826 100644 ---- a/drivers/net/ethernet/realtek/r8169.c -+++ b/drivers/net/ethernet/realtek/r8169.c -@@ -745,22 +745,22 @@ struct rtl8169_private { - struct mdio_ops { - void (*write)(struct rtl8169_private *, int, int); - int (*read)(struct rtl8169_private *, int); -- } mdio_ops; -+ } __no_const mdio_ops; - - struct pll_power_ops { - void (*down)(struct rtl8169_private *); - void (*up)(struct rtl8169_private *); -- } pll_power_ops; -+ } __no_const pll_power_ops; - - struct jumbo_ops { - void (*enable)(struct rtl8169_private *); - void (*disable)(struct rtl8169_private *); -- } jumbo_ops; -+ } __no_const jumbo_ops; - - struct csi_ops { - void (*write)(struct rtl8169_private *, int, int); - u32 (*read)(struct rtl8169_private *, int); -- } csi_ops; -+ } __no_const csi_ops; - - int (*set_speed)(struct net_device *, u8 aneg, u16 sp, u8 dpx, u32 adv); - int (*get_settings)(struct net_device *, struct ethtool_cmd *); -diff --git a/drivers/net/ethernet/sis/sis190.c b/drivers/net/ethernet/sis/sis190.c -index 4613591..d816601 100644 ---- a/drivers/net/ethernet/sis/sis190.c -+++ b/drivers/net/ethernet/sis/sis190.c -@@ -1618,7 +1618,7 @@ static int __devinit sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev, - static int __devinit sis190_get_mac_addr_from_apc(struct pci_dev *pdev, - struct net_device *dev) - { -- static const u16 __devinitdata ids[] = { 0x0965, 0x0966, 0x0968 }; -+ static const u16 __devinitconst ids[] = { 0x0965, 0x0966, 0x0968 }; - struct sis190_private *tp = netdev_priv(dev); - struct pci_dev *isa_bridge; - u8 reg, tmp8; -diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c -index 0c74a70..3bc6f68 100644 ---- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c -+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c -@@ -140,8 +140,8 @@ void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode) - - writel(value, ioaddr + MMC_CNTRL); - -- pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n", -- MMC_CNTRL, value); -+// pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n", -+// MMC_CNTRL, value); - } - - /* To mask all all interrupts.*/ -diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h -index 95ceb35..318fc12 100644 ---- a/drivers/net/hyperv/hyperv_net.h -+++ b/drivers/net/hyperv/hyperv_net.h -@@ -99,7 +99,7 @@ struct rndis_device { - - enum rndis_device_state state; - bool link_state; -- atomic_t new_req_id; -+ atomic_unchecked_t new_req_id; - - spinlock_t request_lock; - struct list_head req_list; -diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c -index 1e88a10..1b01736 100644 ---- a/drivers/net/hyperv/rndis_filter.c -+++ b/drivers/net/hyperv/rndis_filter.c -@@ -99,7 +99,7 @@ static struct rndis_request *get_rndis_request(struct rndis_device *dev, - * template - */ - set = &rndis_msg->msg.set_req; -- set->req_id = atomic_inc_return(&dev->new_req_id); -+ set->req_id = atomic_inc_return_unchecked(&dev->new_req_id); - - /* Add to the request list */ - spin_lock_irqsave(&dev->request_lock, flags); -@@ -730,7 +730,7 @@ static void rndis_filter_halt_device(struct rndis_device *dev) - - /* Setup the rndis set */ - halt = &request->request_msg.msg.halt_req; -- halt->req_id = atomic_inc_return(&dev->new_req_id); -+ halt->req_id = atomic_inc_return_unchecked(&dev->new_req_id); - - /* Ignore return since this msg is optional. */ - rndis_filter_send_request(dev, request); -diff --git a/drivers/net/phy/mdio-bitbang.c b/drivers/net/phy/mdio-bitbang.c -index daec9b0..6428fcb 100644 ---- a/drivers/net/phy/mdio-bitbang.c -+++ b/drivers/net/phy/mdio-bitbang.c -@@ -234,6 +234,7 @@ void free_mdio_bitbang(struct mii_bus *bus) - struct mdiobb_ctrl *ctrl = bus->priv; - - module_put(ctrl->ops->owner); -+ mdiobus_unregister(bus); - mdiobus_free(bus); - } - EXPORT_SYMBOL(free_mdio_bitbang); -diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c -index 5c05572..389610b 100644 ---- a/drivers/net/ppp/ppp_generic.c -+++ b/drivers/net/ppp/ppp_generic.c -@@ -986,7 +986,6 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - void __user *addr = (void __user *) ifr->ifr_ifru.ifru_data; - struct ppp_stats stats; - struct ppp_comp_stats cstats; -- char *vers; - - switch (cmd) { - case SIOCGPPPSTATS: -@@ -1008,8 +1007,7 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - break; - - case SIOCGPPPVER: -- vers = PPP_VERSION; -- if (copy_to_user(addr, vers, strlen(vers) + 1)) -+ if (copy_to_user(addr, PPP_VERSION, sizeof(PPP_VERSION))) - break; - err = 0; - break; -diff --git a/drivers/net/tun.c b/drivers/net/tun.c -index 3a16d4f..a311cec 100644 ---- a/drivers/net/tun.c -+++ b/drivers/net/tun.c -@@ -1367,7 +1367,7 @@ static int set_offload(struct tun_struct *tun, unsigned long arg) - } - - static long __tun_chr_ioctl(struct file *file, unsigned int cmd, -- unsigned long arg, int ifreq_len) -+ unsigned long arg, size_t ifreq_len) - { - struct tun_file *tfile = file->private_data; - struct tun_struct *tun; -@@ -1378,6 +1378,9 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, - int vnet_hdr_sz; - int ret; - -+ if (ifreq_len > sizeof ifr) -+ return -EFAULT; -+ - if (cmd == TUNSETIFF || _IOC_TYPE(cmd) == 0x89) { - if (copy_from_user(&ifr, argp, ifreq_len)) - return -EFAULT; -diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c -index 62f30b4..ff99dfd 100644 ---- a/drivers/net/usb/hso.c -+++ b/drivers/net/usb/hso.c -@@ -71,7 +71,7 @@ - #include - #include - #include -- -+#include - - #define MOD_AUTHOR "Option Wireless" - #define MOD_DESCRIPTION "USB High Speed Option driver" -@@ -1182,7 +1182,7 @@ static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) - struct urb *urb; - - urb = serial->rx_urb[0]; -- if (serial->port.count > 0) { -+ if (atomic_read(&serial->port.count) > 0) { - count = put_rxbuf_data(urb, serial); - if (count == -1) - return; -@@ -1218,7 +1218,7 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb) - DUMP1(urb->transfer_buffer, urb->actual_length); - - /* Anyone listening? */ -- if (serial->port.count == 0) -+ if (atomic_read(&serial->port.count) == 0) - return; - - if (status == 0) { -@@ -1300,8 +1300,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp) - tty_port_tty_set(&serial->port, tty); - - /* check for port already opened, if not set the termios */ -- serial->port.count++; -- if (serial->port.count == 1) { -+ if (atomic_inc_return(&serial->port.count) == 1) { - serial->rx_state = RX_IDLE; - /* Force default termio settings */ - _hso_serial_set_termios(tty, NULL); -@@ -1313,7 +1312,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp) - result = hso_start_serial_device(serial->parent, GFP_KERNEL); - if (result) { - hso_stop_serial_device(serial->parent); -- serial->port.count--; -+ atomic_dec(&serial->port.count); - kref_put(&serial->parent->ref, hso_serial_ref_free); - } - } else { -@@ -1350,10 +1349,10 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp) - - /* reset the rts and dtr */ - /* do the actual close */ -- serial->port.count--; -+ atomic_dec(&serial->port.count); - -- if (serial->port.count <= 0) { -- serial->port.count = 0; -+ if (atomic_read(&serial->port.count) <= 0) { -+ atomic_set(&serial->port.count, 0); - tty_port_tty_set(&serial->port, NULL); - if (!usb_gone) - hso_stop_serial_device(serial->parent); -@@ -1429,7 +1428,7 @@ static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) - - /* the actual setup */ - spin_lock_irqsave(&serial->serial_lock, flags); -- if (serial->port.count) -+ if (atomic_read(&serial->port.count)) - _hso_serial_set_termios(tty, old); - else - tty->termios = old; -@@ -1888,7 +1887,7 @@ static void intr_callback(struct urb *urb) - D1("Pending read interrupt on port %d\n", i); - spin_lock(&serial->serial_lock); - if (serial->rx_state == RX_IDLE && -- serial->port.count > 0) { -+ atomic_read(&serial->port.count) > 0) { - /* Setup and send a ctrl req read on - * port i */ - if (!serial->rx_urb_filled[0]) { -@@ -3079,7 +3078,7 @@ static int hso_resume(struct usb_interface *iface) - /* Start all serial ports */ - for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { - if (serial_table[i] && (serial_table[i]->interface == iface)) { -- if (dev2ser(serial_table[i])->port.count) { -+ if (atomic_read(&dev2ser(serial_table[i])->port.count)) { - result = - hso_start_serial_device(serial_table[i], GFP_NOIO); - hso_kick_transmit(dev2ser(serial_table[i])); -diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h -index 6169fbd..40e8422 100644 ---- a/drivers/net/wireless/ath/ath.h -+++ b/drivers/net/wireless/ath/ath.h -@@ -119,6 +119,7 @@ struct ath_ops { - void (*write_flush) (void *); - u32 (*rmw)(void *, u32 reg_offset, u32 set, u32 clr); - }; -+typedef struct ath_ops __no_const ath_ops_no_const; - - struct ath_common; - struct ath_bus_ops; -diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c -index 68a4046..c12f4f3 100644 ---- a/drivers/net/wireless/ath/ath5k/base.c -+++ b/drivers/net/wireless/ath/ath5k/base.c -@@ -1803,7 +1803,7 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) - { - int ret; - struct ath5k_hw *ah = hw->priv; -- struct ath5k_vif *avf = (void *)vif->drv_priv; -+ struct ath5k_vif *avf; - struct sk_buff *skb; - - if (WARN_ON(!vif)) { -@@ -1818,6 +1818,7 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) - goto out; - } - -+ avf = (void *)vif->drv_priv; - ath5k_txbuf_free_skb(ah, avf->bbuf); - avf->bbuf->skb = skb; - ret = ath5k_beacon_setup(ah, avf->bbuf); -diff --git a/drivers/net/wireless/ath/ath9k/ar9002_mac.c b/drivers/net/wireless/ath/ath9k/ar9002_mac.c -index 8d78253..bebbb68 100644 ---- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c -+++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c -@@ -184,8 +184,8 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - ads->ds_txstatus6 = ads->ds_txstatus7 = 0; - ads->ds_txstatus8 = ads->ds_txstatus9 = 0; - -- ACCESS_ONCE(ads->ds_link) = i->link; -- ACCESS_ONCE(ads->ds_data) = i->buf_addr[0]; -+ ACCESS_ONCE_RW(ads->ds_link) = i->link; -+ ACCESS_ONCE_RW(ads->ds_data) = i->buf_addr[0]; - - ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore); - ctl6 = SM(i->keytype, AR_EncrType); -@@ -199,26 +199,26 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - - if ((i->is_first || i->is_last) && - i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) { -- ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ds_ctl2) = set11nTries(i->rates, 0) - | set11nTries(i->rates, 1) - | set11nTries(i->rates, 2) - | set11nTries(i->rates, 3) - | (i->dur_update ? AR_DurUpdateEna : 0) - | SM(0, AR_BurstDur); - -- ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ds_ctl3) = set11nRate(i->rates, 0) - | set11nRate(i->rates, 1) - | set11nRate(i->rates, 2) - | set11nRate(i->rates, 3); - } else { -- ACCESS_ONCE(ads->ds_ctl2) = 0; -- ACCESS_ONCE(ads->ds_ctl3) = 0; -+ ACCESS_ONCE_RW(ads->ds_ctl2) = 0; -+ ACCESS_ONCE_RW(ads->ds_ctl3) = 0; - } - - if (!i->is_first) { -- ACCESS_ONCE(ads->ds_ctl0) = 0; -- ACCESS_ONCE(ads->ds_ctl1) = ctl1; -- ACCESS_ONCE(ads->ds_ctl6) = ctl6; -+ ACCESS_ONCE_RW(ads->ds_ctl0) = 0; -+ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1; -+ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6; - return; - } - -@@ -243,7 +243,7 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - break; - } - -- ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen) -+ ACCESS_ONCE_RW(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen) - | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) - | SM(i->txpower, AR_XmitPower) - | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) -@@ -253,19 +253,19 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - | (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable : - (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0)); - -- ACCESS_ONCE(ads->ds_ctl1) = ctl1; -- ACCESS_ONCE(ads->ds_ctl6) = ctl6; -+ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1; -+ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6; - - if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST) - return; - -- ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0) - | set11nPktDurRTSCTS(i->rates, 1); - -- ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2) -+ ACCESS_ONCE_RW(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2) - | set11nPktDurRTSCTS(i->rates, 3); - -- ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ds_ctl7) = set11nRateFlags(i->rates, 0) - | set11nRateFlags(i->rates, 1) - | set11nRateFlags(i->rates, 2) - | set11nRateFlags(i->rates, 3) -diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c -index 78816b8..1fcdfae 100644 ---- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c -+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c -@@ -39,47 +39,47 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - (i->qcu << AR_TxQcuNum_S) | desc_len; - - checksum += val; -- ACCESS_ONCE(ads->info) = val; -+ ACCESS_ONCE_RW(ads->info) = val; - - checksum += i->link; -- ACCESS_ONCE(ads->link) = i->link; -+ ACCESS_ONCE_RW(ads->link) = i->link; - - checksum += i->buf_addr[0]; -- ACCESS_ONCE(ads->data0) = i->buf_addr[0]; -+ ACCESS_ONCE_RW(ads->data0) = i->buf_addr[0]; - checksum += i->buf_addr[1]; -- ACCESS_ONCE(ads->data1) = i->buf_addr[1]; -+ ACCESS_ONCE_RW(ads->data1) = i->buf_addr[1]; - checksum += i->buf_addr[2]; -- ACCESS_ONCE(ads->data2) = i->buf_addr[2]; -+ ACCESS_ONCE_RW(ads->data2) = i->buf_addr[2]; - checksum += i->buf_addr[3]; -- ACCESS_ONCE(ads->data3) = i->buf_addr[3]; -+ ACCESS_ONCE_RW(ads->data3) = i->buf_addr[3]; - - checksum += (val = (i->buf_len[0] << AR_BufLen_S) & AR_BufLen); -- ACCESS_ONCE(ads->ctl3) = val; -+ ACCESS_ONCE_RW(ads->ctl3) = val; - checksum += (val = (i->buf_len[1] << AR_BufLen_S) & AR_BufLen); -- ACCESS_ONCE(ads->ctl5) = val; -+ ACCESS_ONCE_RW(ads->ctl5) = val; - checksum += (val = (i->buf_len[2] << AR_BufLen_S) & AR_BufLen); -- ACCESS_ONCE(ads->ctl7) = val; -+ ACCESS_ONCE_RW(ads->ctl7) = val; - checksum += (val = (i->buf_len[3] << AR_BufLen_S) & AR_BufLen); -- ACCESS_ONCE(ads->ctl9) = val; -+ ACCESS_ONCE_RW(ads->ctl9) = val; - - checksum = (u16) (((checksum & 0xffff) + (checksum >> 16)) & 0xffff); -- ACCESS_ONCE(ads->ctl10) = checksum; -+ ACCESS_ONCE_RW(ads->ctl10) = checksum; - - if (i->is_first || i->is_last) { -- ACCESS_ONCE(ads->ctl13) = set11nTries(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ctl13) = set11nTries(i->rates, 0) - | set11nTries(i->rates, 1) - | set11nTries(i->rates, 2) - | set11nTries(i->rates, 3) - | (i->dur_update ? AR_DurUpdateEna : 0) - | SM(0, AR_BurstDur); - -- ACCESS_ONCE(ads->ctl14) = set11nRate(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ctl14) = set11nRate(i->rates, 0) - | set11nRate(i->rates, 1) - | set11nRate(i->rates, 2) - | set11nRate(i->rates, 3); - } else { -- ACCESS_ONCE(ads->ctl13) = 0; -- ACCESS_ONCE(ads->ctl14) = 0; -+ ACCESS_ONCE_RW(ads->ctl13) = 0; -+ ACCESS_ONCE_RW(ads->ctl14) = 0; - } - - ads->ctl20 = 0; -@@ -89,17 +89,17 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - - ctl17 = SM(i->keytype, AR_EncrType); - if (!i->is_first) { -- ACCESS_ONCE(ads->ctl11) = 0; -- ACCESS_ONCE(ads->ctl12) = i->is_last ? 0 : AR_TxMore; -- ACCESS_ONCE(ads->ctl15) = 0; -- ACCESS_ONCE(ads->ctl16) = 0; -- ACCESS_ONCE(ads->ctl17) = ctl17; -- ACCESS_ONCE(ads->ctl18) = 0; -- ACCESS_ONCE(ads->ctl19) = 0; -+ ACCESS_ONCE_RW(ads->ctl11) = 0; -+ ACCESS_ONCE_RW(ads->ctl12) = i->is_last ? 0 : AR_TxMore; -+ ACCESS_ONCE_RW(ads->ctl15) = 0; -+ ACCESS_ONCE_RW(ads->ctl16) = 0; -+ ACCESS_ONCE_RW(ads->ctl17) = ctl17; -+ ACCESS_ONCE_RW(ads->ctl18) = 0; -+ ACCESS_ONCE_RW(ads->ctl19) = 0; - return; - } - -- ACCESS_ONCE(ads->ctl11) = (i->pkt_len & AR_FrameLen) -+ ACCESS_ONCE_RW(ads->ctl11) = (i->pkt_len & AR_FrameLen) - | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) - | SM(i->txpower, AR_XmitPower) - | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) -@@ -135,22 +135,22 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) - val = (i->flags & ATH9K_TXDESC_PAPRD) >> ATH9K_TXDESC_PAPRD_S; - ctl12 |= SM(val, AR_PAPRDChainMask); - -- ACCESS_ONCE(ads->ctl12) = ctl12; -- ACCESS_ONCE(ads->ctl17) = ctl17; -+ ACCESS_ONCE_RW(ads->ctl12) = ctl12; -+ ACCESS_ONCE_RW(ads->ctl17) = ctl17; - -- ACCESS_ONCE(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0) - | set11nPktDurRTSCTS(i->rates, 1); - -- ACCESS_ONCE(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2) -+ ACCESS_ONCE_RW(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2) - | set11nPktDurRTSCTS(i->rates, 3); - -- ACCESS_ONCE(ads->ctl18) = set11nRateFlags(i->rates, 0) -+ ACCESS_ONCE_RW(ads->ctl18) = set11nRateFlags(i->rates, 0) - | set11nRateFlags(i->rates, 1) - | set11nRateFlags(i->rates, 2) - | set11nRateFlags(i->rates, 3) - | SM(i->rtscts_rate, AR_RTSCTSRate); - -- ACCESS_ONCE(ads->ctl19) = AR_Not_Sounding; -+ ACCESS_ONCE_RW(ads->ctl19) = AR_Not_Sounding; - } - - static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads) -diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h -index de6968f..29ac4c1 100644 ---- a/drivers/net/wireless/ath/ath9k/hw.h -+++ b/drivers/net/wireless/ath/ath9k/hw.h -@@ -656,7 +656,7 @@ struct ath_hw_private_ops { - - /* ANI */ - void (*ani_cache_ini_regs)(struct ath_hw *ah); --}; -+} __no_const; - - /** - * struct ath_hw_ops - callbacks used by hardware code and driver code -@@ -686,7 +686,7 @@ struct ath_hw_ops { - void (*antdiv_comb_conf_set)(struct ath_hw *ah, - struct ath_hw_antcomb_conf *antconf); - --}; -+} __no_const; - - struct ath_nf_limits { - s16 max; -@@ -706,7 +706,7 @@ enum ath_cal_list { - #define AH_FASTCC 0x4 - - struct ath_hw { -- struct ath_ops reg_ops; -+ ath_ops_no_const reg_ops; - - struct ieee80211_hw *hw; - struct ath_common common; -diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h -index af00e2c..ab04d34 100644 ---- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h -+++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h -@@ -545,7 +545,7 @@ struct phy_func_ptr { - void (*carrsuppr)(struct brcms_phy *); - s32 (*rxsigpwr)(struct brcms_phy *, s32); - void (*detach)(struct brcms_phy *); --}; -+} __no_const; - - struct brcms_phy { - struct brcms_phy_pub pubpi_ro; -diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c -index faec404..a5277f1 100644 ---- a/drivers/net/wireless/iwlegacy/3945-mac.c -+++ b/drivers/net/wireless/iwlegacy/3945-mac.c -@@ -3611,7 +3611,9 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) - */ - if (il3945_mod_params.disable_hw_scan) { - D_INFO("Disabling hw_scan\n"); -- il3945_mac_ops.hw_scan = NULL; -+ pax_open_kernel(); -+ *(void **)&il3945_mac_ops.hw_scan = NULL; -+ pax_close_kernel(); - } - - D_INFO("*** LOAD DRIVER ***\n"); -diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c -index a47b306..297daf2 100644 ---- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c -+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c -@@ -203,7 +203,7 @@ static ssize_t iwl_dbgfs_sram_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[64]; -- int buf_size; -+ size_t buf_size; - u32 offset, len; - - memset(buf, 0, sizeof(buf)); -@@ -473,7 +473,7 @@ static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file, - struct iwl_priv *priv = file->private_data; - - char buf[8]; -- int buf_size; -+ size_t buf_size; - u32 reset_flag; - - memset(buf, 0, sizeof(buf)); -@@ -554,7 +554,7 @@ static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int ht40; - - memset(buf, 0, sizeof(buf)); -@@ -606,7 +606,7 @@ static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int value; - - memset(buf, 0, sizeof(buf)); -@@ -1871,7 +1871,7 @@ static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int clear; - - memset(buf, 0, sizeof(buf)); -@@ -1916,7 +1916,7 @@ static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int trace; - - memset(buf, 0, sizeof(buf)); -@@ -1987,7 +1987,7 @@ static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int missed; - - memset(buf, 0, sizeof(buf)); -@@ -2028,7 +2028,7 @@ static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file, - - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int plcp; - - memset(buf, 0, sizeof(buf)); -@@ -2088,7 +2088,7 @@ static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file, - - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int flush; - - memset(buf, 0, sizeof(buf)); -@@ -2178,7 +2178,7 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file, - - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int rts; - - if (!priv->cfg->ht_params) -@@ -2220,7 +2220,7 @@ static ssize_t iwl_dbgfs_echo_test_write(struct file *file, - { - struct iwl_priv *priv = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); -@@ -2256,7 +2256,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file, - struct iwl_priv *priv = file->private_data; - u32 event_log_flag; - char buf[8]; -- int buf_size; -+ size_t buf_size; - - /* check that the interface is up */ - if (!iwl_is_ready(priv)) -@@ -2310,7 +2310,7 @@ static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file, - struct iwl_priv *priv = file->private_data; - char buf[8]; - u32 calib_disabled; -- int buf_size; -+ size_t buf_size; - - memset(buf, 0, sizeof(buf)); - buf_size = min(count, sizeof(buf) - 1); -diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c -index dbeebef..b45a152 100644 ---- a/drivers/net/wireless/iwlwifi/pcie/trans.c -+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c -@@ -1944,7 +1944,7 @@ static ssize_t iwl_dbgfs_interrupt_write(struct file *file, - struct isr_statistics *isr_stats = &trans_pcie->isr_stats; - - char buf[8]; -- int buf_size; -+ size_t buf_size; - u32 reset_flag; - - memset(buf, 0, sizeof(buf)); -@@ -1965,7 +1965,7 @@ static ssize_t iwl_dbgfs_csr_write(struct file *file, - { - struct iwl_trans *trans = file->private_data; - char buf[8]; -- int buf_size; -+ size_t buf_size; - int csr; - - memset(buf, 0, sizeof(buf)); -diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c -index 0083839..fcb7225 100644 ---- a/drivers/net/wireless/mac80211_hwsim.c -+++ b/drivers/net/wireless/mac80211_hwsim.c -@@ -1748,9 +1748,11 @@ static int __init init_mac80211_hwsim(void) - return -EINVAL; - - if (fake_hw_scan) { -- mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan; -- mac80211_hwsim_ops.sw_scan_start = NULL; -- mac80211_hwsim_ops.sw_scan_complete = NULL; -+ pax_open_kernel(); -+ *(void **)&mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan; -+ *(void **)&mac80211_hwsim_ops.sw_scan_start = NULL; -+ *(void **)&mac80211_hwsim_ops.sw_scan_complete = NULL; -+ pax_close_kernel(); - } - - spin_lock_init(&hwsim_radio_lock); -diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h -index e7c2a82..582e228 100644 ---- a/drivers/net/wireless/mwifiex/main.h -+++ b/drivers/net/wireless/mwifiex/main.h -@@ -571,7 +571,7 @@ struct mwifiex_if_ops { - int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *); - int (*data_complete) (struct mwifiex_adapter *, struct sk_buff *); - int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *); --}; -+} __no_const; - - struct mwifiex_adapter { - u8 iface_type; -diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c -index 7a4ae9e..56e00bd 100644 ---- a/drivers/net/wireless/rndis_wlan.c -+++ b/drivers/net/wireless/rndis_wlan.c -@@ -1235,7 +1235,7 @@ static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold) - - netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold); - -- if (rts_threshold < 0 || rts_threshold > 2347) -+ if (rts_threshold > 2347) - rts_threshold = 2347; - - tmp = cpu_to_le32(rts_threshold); -diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h -index 8afb546..0c0dc5c 100644 ---- a/drivers/net/wireless/rt2x00/rt2x00.h -+++ b/drivers/net/wireless/rt2x00/rt2x00.h -@@ -397,7 +397,7 @@ struct rt2x00_intf { - * for hardware which doesn't support hardware - * sequence counting. - */ -- atomic_t seqno; -+ atomic_unchecked_t seqno; - }; - - static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) -diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c -index f7e74a0..da71431 100644 ---- a/drivers/net/wireless/rt2x00/rt2x00queue.c -+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c -@@ -240,9 +240,9 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev, - * sequence counter given by mac80211. - */ - if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags)) -- seqno = atomic_add_return(0x10, &intf->seqno); -+ seqno = atomic_add_return_unchecked(0x10, &intf->seqno); - else -- seqno = atomic_read(&intf->seqno); -+ seqno = atomic_read_unchecked(&intf->seqno); - - hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); - hdr->seq_ctrl |= cpu_to_le16(seqno); -diff --git a/drivers/net/wireless/ti/wl1251/wl1251.h b/drivers/net/wireless/ti/wl1251/wl1251.h -index fd02060..74ee481 100644 ---- a/drivers/net/wireless/ti/wl1251/wl1251.h -+++ b/drivers/net/wireless/ti/wl1251/wl1251.h -@@ -266,7 +266,7 @@ struct wl1251_if_operations { - void (*reset)(struct wl1251 *wl); - void (*enable_irq)(struct wl1251 *wl); - void (*disable_irq)(struct wl1251 *wl); --}; -+} __no_const; - - struct wl1251 { - struct ieee80211_hw *hw; -diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h -index 0ce7a8e..56a0ccf 100644 ---- a/drivers/net/wireless/ti/wlcore/wlcore.h -+++ b/drivers/net/wireless/ti/wlcore/wlcore.h -@@ -81,7 +81,7 @@ struct wlcore_ops { - struct ieee80211_sta *sta, - struct ieee80211_key_conf *key_conf); - u32 (*pre_pkt_send)(struct wl1271 *wl, u32 buf_offset, u32 last_len); --}; -+} __no_const; - - enum wlcore_partitions { - PART_DOWN, -diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c -index f34b5b2..b5abb9f 100644 ---- a/drivers/oprofile/buffer_sync.c -+++ b/drivers/oprofile/buffer_sync.c -@@ -343,7 +343,7 @@ static void add_data(struct op_entry *entry, struct mm_struct *mm) - if (cookie == NO_COOKIE) - offset = pc; - if (cookie == INVALID_COOKIE) { -- atomic_inc(&oprofile_stats.sample_lost_no_mapping); -+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); - offset = pc; - } - if (cookie != last_cookie) { -@@ -387,14 +387,14 @@ add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel) - /* add userspace sample */ - - if (!mm) { -- atomic_inc(&oprofile_stats.sample_lost_no_mm); -+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mm); - return 0; - } - - cookie = lookup_dcookie(mm, s->eip, &offset); - - if (cookie == INVALID_COOKIE) { -- atomic_inc(&oprofile_stats.sample_lost_no_mapping); -+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); - return 0; - } - -@@ -563,7 +563,7 @@ void sync_buffer(int cpu) - /* ignore backtraces if failed to add a sample */ - if (state == sb_bt_start) { - state = sb_bt_ignore; -- atomic_inc(&oprofile_stats.bt_lost_no_mapping); -+ atomic_inc_unchecked(&oprofile_stats.bt_lost_no_mapping); - } - } - release_mm(mm); -diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c -index c0cc4e7..44d4e54 100644 ---- a/drivers/oprofile/event_buffer.c -+++ b/drivers/oprofile/event_buffer.c -@@ -53,7 +53,7 @@ void add_event_entry(unsigned long value) - } - - if (buffer_pos == buffer_size) { -- atomic_inc(&oprofile_stats.event_lost_overflow); -+ atomic_inc_unchecked(&oprofile_stats.event_lost_overflow); - return; - } - -diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c -index ed2c3ec..deda85a 100644 ---- a/drivers/oprofile/oprof.c -+++ b/drivers/oprofile/oprof.c -@@ -110,7 +110,7 @@ static void switch_worker(struct work_struct *work) - if (oprofile_ops.switch_events()) - return; - -- atomic_inc(&oprofile_stats.multiplex_counter); -+ atomic_inc_unchecked(&oprofile_stats.multiplex_counter); - start_switch_worker(); - } - -diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c -index 917d28e..d62d981 100644 ---- a/drivers/oprofile/oprofile_stats.c -+++ b/drivers/oprofile/oprofile_stats.c -@@ -30,11 +30,11 @@ void oprofile_reset_stats(void) - cpu_buf->sample_invalid_eip = 0; - } - -- atomic_set(&oprofile_stats.sample_lost_no_mm, 0); -- atomic_set(&oprofile_stats.sample_lost_no_mapping, 0); -- atomic_set(&oprofile_stats.event_lost_overflow, 0); -- atomic_set(&oprofile_stats.bt_lost_no_mapping, 0); -- atomic_set(&oprofile_stats.multiplex_counter, 0); -+ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mm, 0); -+ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mapping, 0); -+ atomic_set_unchecked(&oprofile_stats.event_lost_overflow, 0); -+ atomic_set_unchecked(&oprofile_stats.bt_lost_no_mapping, 0); -+ atomic_set_unchecked(&oprofile_stats.multiplex_counter, 0); - } - - -diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h -index 38b6fc0..b5cbfce 100644 ---- a/drivers/oprofile/oprofile_stats.h -+++ b/drivers/oprofile/oprofile_stats.h -@@ -13,11 +13,11 @@ - #include - - struct oprofile_stat_struct { -- atomic_t sample_lost_no_mm; -- atomic_t sample_lost_no_mapping; -- atomic_t bt_lost_no_mapping; -- atomic_t event_lost_overflow; -- atomic_t multiplex_counter; -+ atomic_unchecked_t sample_lost_no_mm; -+ atomic_unchecked_t sample_lost_no_mapping; -+ atomic_unchecked_t bt_lost_no_mapping; -+ atomic_unchecked_t event_lost_overflow; -+ atomic_unchecked_t multiplex_counter; - }; - - extern struct oprofile_stat_struct oprofile_stats; -diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c -index 849357c..b83c1e0 100644 ---- a/drivers/oprofile/oprofilefs.c -+++ b/drivers/oprofile/oprofilefs.c -@@ -185,7 +185,7 @@ static const struct file_operations atomic_ro_fops = { - - - int oprofilefs_create_ro_atomic(struct super_block *sb, struct dentry *root, -- char const *name, atomic_t *val) -+ char const *name, atomic_unchecked_t *val) - { - return __oprofilefs_create_file(sb, root, name, - &atomic_ro_fops, 0444, val); -diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c -index 3f56bc0..707d642 100644 ---- a/drivers/parport/procfs.c -+++ b/drivers/parport/procfs.c -@@ -64,7 +64,7 @@ static int do_active_device(ctl_table *table, int write, - - *ppos += len; - -- return copy_to_user(result, buffer, len) ? -EFAULT : 0; -+ return (len > sizeof buffer || copy_to_user(result, buffer, len)) ? -EFAULT : 0; - } - - #ifdef CONFIG_PARPORT_1284 -@@ -106,7 +106,7 @@ static int do_autoprobe(ctl_table *table, int write, - - *ppos += len; - -- return copy_to_user (result, buffer, len) ? -EFAULT : 0; -+ return (len > sizeof buffer || copy_to_user (result, buffer, len)) ? -EFAULT : 0; - } - #endif /* IEEE1284.3 support. */ - -diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h -index 9fff878..ad0ad53 100644 ---- a/drivers/pci/hotplug/cpci_hotplug.h -+++ b/drivers/pci/hotplug/cpci_hotplug.h -@@ -59,7 +59,7 @@ struct cpci_hp_controller_ops { - int (*hardware_test) (struct slot* slot, u32 value); - u8 (*get_power) (struct slot* slot); - int (*set_power) (struct slot* slot, int value); --}; -+} __no_const; - - struct cpci_hp_controller { - unsigned int irq; -diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c -index 76ba8a1..20ca857 100644 ---- a/drivers/pci/hotplug/cpqphp_nvram.c -+++ b/drivers/pci/hotplug/cpqphp_nvram.c -@@ -428,9 +428,13 @@ static u32 store_HRT (void __iomem *rom_start) - - void compaq_nvram_init (void __iomem *rom_start) - { -+ -+#ifndef CONFIG_PAX_KERNEXEC - if (rom_start) { - compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR); - } -+#endif -+ - dbg("int15 entry = %p\n", compaq_int15_entry_point); - - /* initialize our int15 lock */ -diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c -index 474f22f..1eb3ca3 100644 ---- a/drivers/pci/pcie/aspm.c -+++ b/drivers/pci/pcie/aspm.c -@@ -27,9 +27,9 @@ - #define MODULE_PARAM_PREFIX "pcie_aspm." - - /* Note: those are not register definitions */ --#define ASPM_STATE_L0S_UP (1) /* Upstream direction L0s state */ --#define ASPM_STATE_L0S_DW (2) /* Downstream direction L0s state */ --#define ASPM_STATE_L1 (4) /* L1 state */ -+#define ASPM_STATE_L0S_UP (1U) /* Upstream direction L0s state */ -+#define ASPM_STATE_L0S_DW (2U) /* Downstream direction L0s state */ -+#define ASPM_STATE_L1 (4U) /* L1 state */ - #define ASPM_STATE_L0S (ASPM_STATE_L0S_UP | ASPM_STATE_L0S_DW) - #define ASPM_STATE_ALL (ASPM_STATE_L0S | ASPM_STATE_L1) - -diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c -index 61859d0..124539e 100644 ---- a/drivers/pci/probe.c -+++ b/drivers/pci/probe.c -@@ -173,7 +173,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, - struct pci_bus_region region; - bool bar_too_big = false, bar_disabled = false; - -- mask = type ? PCI_ROM_ADDRESS_MASK : ~0; -+ mask = type ? (u32)PCI_ROM_ADDRESS_MASK : ~0; - - /* No printks while decoding is disabled! */ - if (!dev->mmio_always_on) { -diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c -index af028c7..654cdfc 100644 ---- a/drivers/pci/proc.c -+++ b/drivers/pci/proc.c -@@ -484,7 +484,16 @@ static const struct file_operations proc_bus_pci_dev_operations = { - static int __init pci_proc_init(void) - { - struct pci_dev *dev = NULL; -+ -+#ifdef CONFIG_GRKERNSEC_PROC_ADD -+#ifdef CONFIG_GRKERNSEC_PROC_USER -+ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR, NULL); -+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) -+ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL); -+#endif -+#else - proc_bus_pci_dir = proc_mkdir("bus/pci", NULL); -+#endif - proc_create("devices", 0, proc_bus_pci_dir, - &proc_bus_pci_dev_operations); - proc_initialized = 1; -diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c -index 52daaa8..d6b81eb 100644 ---- a/drivers/platform/x86/thinkpad_acpi.c -+++ b/drivers/platform/x86/thinkpad_acpi.c -@@ -2097,7 +2097,7 @@ static int hotkey_mask_get(void) - return 0; - } - --void static hotkey_mask_warn_incomplete_mask(void) -+static void hotkey_mask_warn_incomplete_mask(void) - { - /* log only what the user can fix... */ - const u32 wantedmask = hotkey_driver_mask & -@@ -2328,11 +2328,6 @@ static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) - } - } - --static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, -- struct tp_nvram_state *newn, -- const u32 event_mask) --{ -- - #define TPACPI_COMPARE_KEY(__scancode, __member) \ - do { \ - if ((event_mask & (1 << __scancode)) && \ -@@ -2346,36 +2341,42 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - tpacpi_hotkey_send_key(__scancode); \ - } while (0) - -- void issue_volchange(const unsigned int oldvol, -- const unsigned int newvol) -- { -- unsigned int i = oldvol; -+static void issue_volchange(const unsigned int oldvol, -+ const unsigned int newvol, -+ const u32 event_mask) -+{ -+ unsigned int i = oldvol; - -- while (i > newvol) { -- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); -- i--; -- } -- while (i < newvol) { -- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); -- i++; -- } -+ while (i > newvol) { -+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); -+ i--; - } -+ while (i < newvol) { -+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); -+ i++; -+ } -+} - -- void issue_brightnesschange(const unsigned int oldbrt, -- const unsigned int newbrt) -- { -- unsigned int i = oldbrt; -+static void issue_brightnesschange(const unsigned int oldbrt, -+ const unsigned int newbrt, -+ const u32 event_mask) -+{ -+ unsigned int i = oldbrt; - -- while (i > newbrt) { -- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); -- i--; -- } -- while (i < newbrt) { -- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); -- i++; -- } -+ while (i > newbrt) { -+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); -+ i--; -+ } -+ while (i < newbrt) { -+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); -+ i++; - } -+} - -+static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, -+ struct tp_nvram_state *newn, -+ const u32 event_mask) -+{ - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); - TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); -@@ -2409,7 +2410,7 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - oldn->volume_level != newn->volume_level) { - /* recently muted, or repeated mute keypress, or - * multiple presses ending in mute */ -- issue_volchange(oldn->volume_level, newn->volume_level); -+ issue_volchange(oldn->volume_level, newn->volume_level, event_mask); - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); - } - } else { -@@ -2419,7 +2420,7 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); - } - if (oldn->volume_level != newn->volume_level) { -- issue_volchange(oldn->volume_level, newn->volume_level); -+ issue_volchange(oldn->volume_level, newn->volume_level, event_mask); - } else if (oldn->volume_toggle != newn->volume_toggle) { - /* repeated vol up/down keypress at end of scale ? */ - if (newn->volume_level == 0) -@@ -2432,7 +2433,8 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - /* handle brightness */ - if (oldn->brightness_level != newn->brightness_level) { - issue_brightnesschange(oldn->brightness_level, -- newn->brightness_level); -+ newn->brightness_level, -+ event_mask); - } else if (oldn->brightness_toggle != newn->brightness_toggle) { - /* repeated key presses that didn't change state */ - if (newn->brightness_level == 0) -@@ -2441,10 +2443,10 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, - && !tp_features.bright_unkfw) - TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); - } -+} - - #undef TPACPI_COMPARE_KEY - #undef TPACPI_MAY_SEND_KEY --} - - /* - * Polling driver -diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c -index 769d265..a3a05ca 100644 ---- a/drivers/pnp/pnpbios/bioscalls.c -+++ b/drivers/pnp/pnpbios/bioscalls.c -@@ -58,7 +58,7 @@ do { \ - set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \ - } while(0) - --static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, -+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, - (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); - - /* -@@ -95,7 +95,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3, - - cpu = get_cpu(); - save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8]; -+ -+ pax_open_kernel(); - get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc; -+ pax_close_kernel(); - - /* On some boxes IRQ's during PnP BIOS calls are deadly. */ - spin_lock_irqsave(&pnp_bios_lock, flags); -@@ -133,7 +136,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3, - :"memory"); - spin_unlock_irqrestore(&pnp_bios_lock, flags); - -+ pax_open_kernel(); - get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40; -+ pax_close_kernel(); -+ - put_cpu(); - - /* If we get here and this is set then the PnP BIOS faulted on us. */ -@@ -467,7 +473,7 @@ int pnp_bios_read_escd(char *data, u32 nvram_base) - return status; - } - --void pnpbios_calls_init(union pnp_bios_install_struct *header) -+void __init pnpbios_calls_init(union pnp_bios_install_struct *header) - { - int i; - -@@ -475,6 +481,8 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header) - pnp_bios_callpoint.offset = header->fields.pm16offset; - pnp_bios_callpoint.segment = PNP_CS16; - -+ pax_open_kernel(); -+ - for_each_possible_cpu(i) { - struct desc_struct *gdt = get_cpu_gdt_table(i); - if (!gdt) -@@ -486,4 +494,6 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header) - set_desc_base(&gdt[GDT_ENTRY_PNPBIOS_DS], - (unsigned long)__va(header->fields.pm16dseg)); - } -+ -+ pax_close_kernel(); - } -diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c -index b0ecacb..7c9da2e 100644 ---- a/drivers/pnp/resource.c -+++ b/drivers/pnp/resource.c -@@ -360,7 +360,7 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res) - return 1; - - /* check if the resource is valid */ -- if (*irq < 0 || *irq > 15) -+ if (*irq > 15) - return 0; - - /* check if the resource is reserved */ -@@ -424,7 +424,7 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res) - return 1; - - /* check if the resource is valid */ -- if (*dma < 0 || *dma == 4 || *dma > 7) -+ if (*dma == 4 || *dma > 7) - return 0; - - /* check if the resource is reserved */ -diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c -index 181ddec..774b6da 100644 ---- a/drivers/power/bq27x00_battery.c -+++ b/drivers/power/bq27x00_battery.c -@@ -80,7 +80,7 @@ - struct bq27x00_device_info; - struct bq27x00_access_methods { - int (*read)(struct bq27x00_device_info *di, u8 reg, bool single); --}; -+} __no_const; - - enum bq27x00_chip { BQ27000, BQ27500, BQ27425}; - -diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c -index 8d53174..04c65de 100644 ---- a/drivers/regulator/max8660.c -+++ b/drivers/regulator/max8660.c -@@ -333,8 +333,10 @@ static int __devinit max8660_probe(struct i2c_client *client, - max8660->shadow_regs[MAX8660_OVER1] = 5; - } else { - /* Otherwise devices can be toggled via software */ -- max8660_dcdc_ops.enable = max8660_dcdc_enable; -- max8660_dcdc_ops.disable = max8660_dcdc_disable; -+ pax_open_kernel(); -+ *(void **)&max8660_dcdc_ops.enable = max8660_dcdc_enable; -+ *(void **)&max8660_dcdc_ops.disable = max8660_dcdc_disable; -+ pax_close_kernel(); - } - - /* -diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c -index b388b74..ed82573 100644 ---- a/drivers/regulator/mc13892-regulator.c -+++ b/drivers/regulator/mc13892-regulator.c -@@ -565,10 +565,12 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev) - } - mc13xxx_unlock(mc13892); - -- mc13892_regulators[MC13892_VCAM].desc.ops->set_mode -+ pax_open_kernel(); -+ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->set_mode - = mc13892_vcam_set_mode; -- mc13892_regulators[MC13892_VCAM].desc.ops->get_mode -+ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->get_mode - = mc13892_vcam_get_mode; -+ pax_close_kernel(); - - mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators, - ARRAY_SIZE(mc13892_regulators)); -diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c -index cace6d3..f623fda 100644 ---- a/drivers/rtc/rtc-dev.c -+++ b/drivers/rtc/rtc-dev.c -@@ -14,6 +14,7 @@ - #include - #include - #include -+#include - #include "rtc-core.h" - - static dev_t rtc_devt; -@@ -345,6 +346,8 @@ static long rtc_dev_ioctl(struct file *file, - if (copy_from_user(&tm, uarg, sizeof(tm))) - return -EFAULT; - -+ gr_log_timechange(); -+ - return rtc_set_time(rtc, &tm); - - case RTC_PIE_ON: -diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h -index 9e933a8..4f969f7 100644 ---- a/drivers/scsi/aacraid/aacraid.h -+++ b/drivers/scsi/aacraid/aacraid.h -@@ -503,7 +503,7 @@ struct adapter_ops - int (*adapter_scsi)(struct fib * fib, struct scsi_cmnd * cmd); - /* Administrative operations */ - int (*adapter_comm)(struct aac_dev * dev, int comm); --}; -+} __no_const; - - /* - * Define which interrupt handler needs to be installed -diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c -index 7199534..cb7f158 100644 ---- a/drivers/scsi/aacraid/linit.c -+++ b/drivers/scsi/aacraid/linit.c -@@ -93,7 +93,7 @@ static DECLARE_PCI_DEVICE_TABLE(aac_pci_tbl) = { - #elif defined(__devinitconst) - static const struct pci_device_id aac_pci_tbl[] __devinitconst = { - #else --static const struct pci_device_id aac_pci_tbl[] __devinitdata = { -+static const struct pci_device_id aac_pci_tbl[] __devinitconst = { - #endif - { 0x1028, 0x0001, 0x1028, 0x0001, 0, 0, 0 }, /* PERC 2/Si (Iguana/PERC2Si) */ - { 0x1028, 0x0002, 0x1028, 0x0002, 0, 0, 1 }, /* PERC 3/Di (Opal/PERC3Di) */ -diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c -index ff80552..1c4120c 100644 ---- a/drivers/scsi/aic94xx/aic94xx_init.c -+++ b/drivers/scsi/aic94xx/aic94xx_init.c -@@ -1012,7 +1012,7 @@ static struct sas_domain_function_template aic94xx_transport_functions = { - .lldd_ata_set_dmamode = asd_set_dmamode, - }; - --static const struct pci_device_id aic94xx_pci_table[] __devinitdata = { -+static const struct pci_device_id aic94xx_pci_table[] __devinitconst = { - {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x410),0, 0, 1}, - {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x412),0, 0, 1}, - {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x416),0, 0, 1}, -diff --git a/drivers/scsi/bfa/bfa.h b/drivers/scsi/bfa/bfa.h -index 4ad7e36..d004679 100644 ---- a/drivers/scsi/bfa/bfa.h -+++ b/drivers/scsi/bfa/bfa.h -@@ -196,7 +196,7 @@ struct bfa_hwif_s { - u32 *end); - int cpe_vec_q0; - int rme_vec_q0; --}; -+} __no_const; - typedef void (*bfa_cb_iocfc_t) (void *cbarg, enum bfa_status status); - - struct bfa_faa_cbfn_s { -diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c -index f0f80e2..8ec946b 100644 ---- a/drivers/scsi/bfa/bfa_fcpim.c -+++ b/drivers/scsi/bfa/bfa_fcpim.c -@@ -3715,7 +3715,7 @@ bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg, - - bfa_iotag_attach(fcp); - -- fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp); -+ fcp->itn_arr = (bfa_itn_s_no_const *) bfa_mem_kva_curp(fcp); - bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr + - (fcp->num_itns * sizeof(struct bfa_itn_s)); - memset(fcp->itn_arr, 0, -@@ -3773,7 +3773,7 @@ bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, - void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)) - { - struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); -- struct bfa_itn_s *itn; -+ bfa_itn_s_no_const *itn; - - itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag); - itn->isr = isr; -diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h -index 36f26da..38a34a8 100644 ---- a/drivers/scsi/bfa/bfa_fcpim.h -+++ b/drivers/scsi/bfa/bfa_fcpim.h -@@ -37,6 +37,7 @@ struct bfa_iotag_s { - struct bfa_itn_s { - bfa_isr_func_t isr; - }; -+typedef struct bfa_itn_s __no_const bfa_itn_s_no_const; - - void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, - void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)); -@@ -147,7 +148,7 @@ struct bfa_fcp_mod_s { - struct list_head iotag_tio_free_q; /* free IO resources */ - struct list_head iotag_unused_q; /* unused IO resources*/ - struct bfa_iotag_s *iotag_arr; -- struct bfa_itn_s *itn_arr; -+ bfa_itn_s_no_const *itn_arr; - int num_ioim_reqs; - int num_fwtio_reqs; - int num_itns; -diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h -index 1a99d4b..e85d64b 100644 ---- a/drivers/scsi/bfa/bfa_ioc.h -+++ b/drivers/scsi/bfa/bfa_ioc.h -@@ -258,7 +258,7 @@ struct bfa_ioc_cbfn_s { - bfa_ioc_disable_cbfn_t disable_cbfn; - bfa_ioc_hbfail_cbfn_t hbfail_cbfn; - bfa_ioc_reset_cbfn_t reset_cbfn; --}; -+} __no_const; - - /* - * IOC event notification mechanism. -@@ -346,7 +346,7 @@ struct bfa_ioc_hwif_s { - void (*ioc_sync_ack) (struct bfa_ioc_s *ioc); - bfa_boolean_t (*ioc_sync_complete) (struct bfa_ioc_s *ioc); - bfa_boolean_t (*ioc_lpu_read_stat) (struct bfa_ioc_s *ioc); --}; -+} __no_const; - - /* - * Queue element to wait for room in request queue. FIFO order is -diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c -index 593085a..47aa999 100644 ---- a/drivers/scsi/hosts.c -+++ b/drivers/scsi/hosts.c -@@ -42,7 +42,7 @@ - #include "scsi_logging.h" - - --static atomic_t scsi_host_next_hn = ATOMIC_INIT(0); /* host_no for next new host */ -+static atomic_unchecked_t scsi_host_next_hn = ATOMIC_INIT(0); /* host_no for next new host */ - - - static void scsi_host_cls_release(struct device *dev) -@@ -361,7 +361,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) - * subtract one because we increment first then return, but we need to - * know what the next host number was before increment - */ -- shost->host_no = atomic_inc_return(&scsi_host_next_hn) - 1; -+ shost->host_no = atomic_inc_return_unchecked(&scsi_host_next_hn) - 1; - shost->dma_channel = 0xff; - - /* These three are default values which can be overridden */ -diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c -index f9823f2..7bc3e81 100644 ---- a/drivers/scsi/hpsa.c -+++ b/drivers/scsi/hpsa.c -@@ -536,7 +536,7 @@ static inline u32 next_command(struct ctlr_info *h, u8 q) - unsigned long flags; - - if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) -- return h->access.command_completed(h, q); -+ return h->access->command_completed(h, q); - - if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { - a = rq->head[rq->current_entry]; -@@ -3355,7 +3355,7 @@ static void start_io(struct ctlr_info *h) - while (!list_empty(&h->reqQ)) { - c = list_entry(h->reqQ.next, struct CommandList, list); - /* can't do anything if fifo is full */ -- if ((h->access.fifo_full(h))) { -+ if ((h->access->fifo_full(h))) { - dev_warn(&h->pdev->dev, "fifo full\n"); - break; - } -@@ -3377,7 +3377,7 @@ static void start_io(struct ctlr_info *h) - - /* Tell the controller execute command */ - spin_unlock_irqrestore(&h->lock, flags); -- h->access.submit_command(h, c); -+ h->access->submit_command(h, c); - spin_lock_irqsave(&h->lock, flags); - } - spin_unlock_irqrestore(&h->lock, flags); -@@ -3385,17 +3385,17 @@ static void start_io(struct ctlr_info *h) - - static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q) - { -- return h->access.command_completed(h, q); -+ return h->access->command_completed(h, q); - } - - static inline bool interrupt_pending(struct ctlr_info *h) - { -- return h->access.intr_pending(h); -+ return h->access->intr_pending(h); - } - - static inline long interrupt_not_for_us(struct ctlr_info *h) - { -- return (h->access.intr_pending(h) == 0) || -+ return (h->access->intr_pending(h) == 0) || - (h->interrupts_enabled == 0); - } - -@@ -4299,7 +4299,7 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h) - if (prod_index < 0) - return -ENODEV; - h->product_name = products[prod_index].product_name; -- h->access = *(products[prod_index].access); -+ h->access = products[prod_index].access; - - pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | - PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); -@@ -4581,7 +4581,7 @@ static void controller_lockup_detected(struct ctlr_info *h) - - assert_spin_locked(&lockup_detector_lock); - remove_ctlr_from_lockup_detector_list(h); -- h->access.set_intr_mask(h, HPSA_INTR_OFF); -+ h->access->set_intr_mask(h, HPSA_INTR_OFF); - spin_lock_irqsave(&h->lock, flags); - h->lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); - spin_unlock_irqrestore(&h->lock, flags); -@@ -4759,7 +4759,7 @@ reinit_after_soft_reset: - } - - /* make sure the board interrupts are off */ -- h->access.set_intr_mask(h, HPSA_INTR_OFF); -+ h->access->set_intr_mask(h, HPSA_INTR_OFF); - - if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx)) - goto clean2; -@@ -4793,7 +4793,7 @@ reinit_after_soft_reset: - * fake ones to scoop up any residual completions. - */ - spin_lock_irqsave(&h->lock, flags); -- h->access.set_intr_mask(h, HPSA_INTR_OFF); -+ h->access->set_intr_mask(h, HPSA_INTR_OFF); - spin_unlock_irqrestore(&h->lock, flags); - free_irqs(h); - rc = hpsa_request_irq(h, hpsa_msix_discard_completions, -@@ -4812,9 +4812,9 @@ reinit_after_soft_reset: - dev_info(&h->pdev->dev, "Board READY.\n"); - dev_info(&h->pdev->dev, - "Waiting for stale completions to drain.\n"); -- h->access.set_intr_mask(h, HPSA_INTR_ON); -+ h->access->set_intr_mask(h, HPSA_INTR_ON); - msleep(10000); -- h->access.set_intr_mask(h, HPSA_INTR_OFF); -+ h->access->set_intr_mask(h, HPSA_INTR_OFF); - - rc = controller_reset_failed(h->cfgtable); - if (rc) -@@ -4835,7 +4835,7 @@ reinit_after_soft_reset: - } - - /* Turn the interrupts on so we can service requests */ -- h->access.set_intr_mask(h, HPSA_INTR_ON); -+ h->access->set_intr_mask(h, HPSA_INTR_ON); - - hpsa_hba_inquiry(h); - hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ -@@ -4887,7 +4887,7 @@ static void hpsa_shutdown(struct pci_dev *pdev) - * To write all data in the battery backed cache to disks - */ - hpsa_flush_cache(h); -- h->access.set_intr_mask(h, HPSA_INTR_OFF); -+ h->access->set_intr_mask(h, HPSA_INTR_OFF); - hpsa_free_irqs_and_disable_msix(h); - } - -@@ -5056,7 +5056,7 @@ static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h, - return; - } - /* Change the access methods to the performant access methods */ -- h->access = SA5_performant_access; -+ h->access = &SA5_performant_access; - h->transMethod = CFGTBL_Trans_Performant; - } - -diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h -index 9816479..c5d4e97 100644 ---- a/drivers/scsi/hpsa.h -+++ b/drivers/scsi/hpsa.h -@@ -79,7 +79,7 @@ struct ctlr_info { - unsigned int msix_vector; - unsigned int msi_vector; - int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ -- struct access_method access; -+ struct access_method *access; - - /* queue and queue Info */ - struct list_head reqQ; -diff --git a/drivers/scsi/ips.h b/drivers/scsi/ips.h -index f2df059..a3a9930 100644 ---- a/drivers/scsi/ips.h -+++ b/drivers/scsi/ips.h -@@ -1027,7 +1027,7 @@ typedef struct { - int (*intr)(struct ips_ha *); - void (*enableint)(struct ips_ha *); - uint32_t (*statupd)(struct ips_ha *); --} ips_hw_func_t; -+} __no_const ips_hw_func_t; - - typedef struct ips_ha { - uint8_t ha_id[IPS_MAX_CHANNELS+1]; -diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c -index c772d8d..35c362c 100644 ---- a/drivers/scsi/libfc/fc_exch.c -+++ b/drivers/scsi/libfc/fc_exch.c -@@ -100,12 +100,12 @@ struct fc_exch_mgr { - u16 pool_max_index; - - struct { -- atomic_t no_free_exch; -- atomic_t no_free_exch_xid; -- atomic_t xid_not_found; -- atomic_t xid_busy; -- atomic_t seq_not_found; -- atomic_t non_bls_resp; -+ atomic_unchecked_t no_free_exch; -+ atomic_unchecked_t no_free_exch_xid; -+ atomic_unchecked_t xid_not_found; -+ atomic_unchecked_t xid_busy; -+ atomic_unchecked_t seq_not_found; -+ atomic_unchecked_t non_bls_resp; - } stats; - }; - -@@ -725,7 +725,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport, - /* allocate memory for exchange */ - ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC); - if (!ep) { -- atomic_inc(&mp->stats.no_free_exch); -+ atomic_inc_unchecked(&mp->stats.no_free_exch); - goto out; - } - memset(ep, 0, sizeof(*ep)); -@@ -786,7 +786,7 @@ out: - return ep; - err: - spin_unlock_bh(&pool->lock); -- atomic_inc(&mp->stats.no_free_exch_xid); -+ atomic_inc_unchecked(&mp->stats.no_free_exch_xid); - mempool_free(ep, mp->ep_pool); - return NULL; - } -@@ -929,7 +929,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, - xid = ntohs(fh->fh_ox_id); /* we originated exch */ - ep = fc_exch_find(mp, xid); - if (!ep) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - reject = FC_RJT_OX_ID; - goto out; - } -@@ -959,7 +959,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, - ep = fc_exch_find(mp, xid); - if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) { - if (ep) { -- atomic_inc(&mp->stats.xid_busy); -+ atomic_inc_unchecked(&mp->stats.xid_busy); - reject = FC_RJT_RX_ID; - goto rel; - } -@@ -970,7 +970,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, - } - xid = ep->xid; /* get our XID */ - } else if (!ep) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - reject = FC_RJT_RX_ID; /* XID not found */ - goto out; - } -@@ -987,7 +987,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, - } else { - sp = &ep->seq; - if (sp->id != fh->fh_seq_id) { -- atomic_inc(&mp->stats.seq_not_found); -+ atomic_inc_unchecked(&mp->stats.seq_not_found); - if (f_ctl & FC_FC_END_SEQ) { - /* - * Update sequence_id based on incoming last -@@ -1437,22 +1437,22 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) - - ep = fc_exch_find(mp, ntohs(fh->fh_ox_id)); - if (!ep) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - goto out; - } - if (ep->esb_stat & ESB_ST_COMPLETE) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - goto rel; - } - if (ep->rxid == FC_XID_UNKNOWN) - ep->rxid = ntohs(fh->fh_rx_id); - if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - goto rel; - } - if (ep->did != ntoh24(fh->fh_s_id) && - ep->did != FC_FID_FLOGI) { -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - goto rel; - } - sof = fr_sof(fp); -@@ -1461,7 +1461,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) - sp->ssb_stat |= SSB_ST_RESP; - sp->id = fh->fh_seq_id; - } else if (sp->id != fh->fh_seq_id) { -- atomic_inc(&mp->stats.seq_not_found); -+ atomic_inc_unchecked(&mp->stats.seq_not_found); - goto rel; - } - -@@ -1525,9 +1525,9 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) - sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */ - - if (!sp) -- atomic_inc(&mp->stats.xid_not_found); -+ atomic_inc_unchecked(&mp->stats.xid_not_found); - else -- atomic_inc(&mp->stats.non_bls_resp); -+ atomic_inc_unchecked(&mp->stats.non_bls_resp); - - fc_frame_free(fp); - } -@@ -2174,13 +2174,13 @@ void fc_exch_update_stats(struct fc_lport *lport) - - list_for_each_entry(ema, &lport->ema_list, ema_list) { - mp = ema->mp; -- st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch); -+ st->fc_no_free_exch += atomic_read_unchecked(&mp->stats.no_free_exch); - st->fc_no_free_exch_xid += -- atomic_read(&mp->stats.no_free_exch_xid); -- st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found); -- st->fc_xid_busy += atomic_read(&mp->stats.xid_busy); -- st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found); -- st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp); -+ atomic_read_unchecked(&mp->stats.no_free_exch_xid); -+ st->fc_xid_not_found += atomic_read_unchecked(&mp->stats.xid_not_found); -+ st->fc_xid_busy += atomic_read_unchecked(&mp->stats.xid_busy); -+ st->fc_seq_not_found += atomic_read_unchecked(&mp->stats.seq_not_found); -+ st->fc_non_bls_resp += atomic_read_unchecked(&mp->stats.non_bls_resp); - } - } - EXPORT_SYMBOL(fc_exch_update_stats); -diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c -index a59fcdc..abe55f3 100644 ---- a/drivers/scsi/libsas/sas_ata.c -+++ b/drivers/scsi/libsas/sas_ata.c -@@ -554,7 +554,7 @@ static struct ata_port_operations sas_sata_ops = { - .postreset = ata_std_postreset, - .error_handler = ata_std_error_handler, - .post_internal_cmd = sas_ata_post_internal, -- .qc_defer = ata_std_qc_defer, -+ .qc_defer = ata_std_qc_defer, - .qc_prep = ata_noop_qc_prep, - .qc_issue = sas_ata_qc_issue, - .qc_fill_rtf = sas_ata_qc_fill_rtf, -diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h -index a65c05a..a39e402 100644 ---- a/drivers/scsi/lpfc/lpfc.h -+++ b/drivers/scsi/lpfc/lpfc.h -@@ -420,7 +420,7 @@ struct lpfc_vport { - struct dentry *debug_nodelist; - struct dentry *vport_debugfs_root; - struct lpfc_debugfs_trc *disc_trc; -- atomic_t disc_trc_cnt; -+ atomic_unchecked_t disc_trc_cnt; - #endif - uint8_t stat_data_enabled; - uint8_t stat_data_blocked; -@@ -834,8 +834,8 @@ struct lpfc_hba { - struct timer_list fabric_block_timer; - unsigned long bit_flags; - #define FABRIC_COMANDS_BLOCKED 0 -- atomic_t num_rsrc_err; -- atomic_t num_cmd_success; -+ atomic_unchecked_t num_rsrc_err; -+ atomic_unchecked_t num_cmd_success; - unsigned long last_rsrc_error_time; - unsigned long last_ramp_down_time; - unsigned long last_ramp_up_time; -@@ -871,7 +871,7 @@ struct lpfc_hba { - - struct dentry *debug_slow_ring_trc; - struct lpfc_debugfs_trc *slow_ring_trc; -- atomic_t slow_ring_trc_cnt; -+ atomic_unchecked_t slow_ring_trc_cnt; - /* iDiag debugfs sub-directory */ - struct dentry *idiag_root; - struct dentry *idiag_pci_cfg; -diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c -index 3217d63..c417981 100644 ---- a/drivers/scsi/lpfc/lpfc_debugfs.c -+++ b/drivers/scsi/lpfc/lpfc_debugfs.c -@@ -106,7 +106,7 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, - - #include - --static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); -+static atomic_unchecked_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); - static unsigned long lpfc_debugfs_start_time = 0L; - - /* iDiag */ -@@ -147,7 +147,7 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) - lpfc_debugfs_enable = 0; - - len = 0; -- index = (atomic_read(&vport->disc_trc_cnt) + 1) & -+ index = (atomic_read_unchecked(&vport->disc_trc_cnt) + 1) & - (lpfc_debugfs_max_disc_trc - 1); - for (i = index; i < lpfc_debugfs_max_disc_trc; i++) { - dtp = vport->disc_trc + i; -@@ -213,7 +213,7 @@ lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) - lpfc_debugfs_enable = 0; - - len = 0; -- index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & -+ index = (atomic_read_unchecked(&phba->slow_ring_trc_cnt) + 1) & - (lpfc_debugfs_max_slow_ring_trc - 1); - for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { - dtp = phba->slow_ring_trc + i; -@@ -636,14 +636,14 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, - !vport || !vport->disc_trc) - return; - -- index = atomic_inc_return(&vport->disc_trc_cnt) & -+ index = atomic_inc_return_unchecked(&vport->disc_trc_cnt) & - (lpfc_debugfs_max_disc_trc - 1); - dtp = vport->disc_trc + index; - dtp->fmt = fmt; - dtp->data1 = data1; - dtp->data2 = data2; - dtp->data3 = data3; -- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); -+ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt); - dtp->jif = jiffies; - #endif - return; -@@ -674,14 +674,14 @@ lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, - !phba || !phba->slow_ring_trc) - return; - -- index = atomic_inc_return(&phba->slow_ring_trc_cnt) & -+ index = atomic_inc_return_unchecked(&phba->slow_ring_trc_cnt) & - (lpfc_debugfs_max_slow_ring_trc - 1); - dtp = phba->slow_ring_trc + index; - dtp->fmt = fmt; - dtp->data1 = data1; - dtp->data2 = data2; - dtp->data3 = data3; -- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); -+ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt); - dtp->jif = jiffies; - #endif - return; -@@ -4090,7 +4090,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) - "slow_ring buffer\n"); - goto debug_failed; - } -- atomic_set(&phba->slow_ring_trc_cnt, 0); -+ atomic_set_unchecked(&phba->slow_ring_trc_cnt, 0); - memset(phba->slow_ring_trc, 0, - (sizeof(struct lpfc_debugfs_trc) * - lpfc_debugfs_max_slow_ring_trc)); -@@ -4136,7 +4136,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) - "buffer\n"); - goto debug_failed; - } -- atomic_set(&vport->disc_trc_cnt, 0); -+ atomic_set_unchecked(&vport->disc_trc_cnt, 0); - - snprintf(name, sizeof(name), "discovery_trace"); - vport->debug_disc_trc = -diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c -index 45c1520..35ba744 100644 ---- a/drivers/scsi/lpfc/lpfc_init.c -+++ b/drivers/scsi/lpfc/lpfc_init.c -@@ -10478,8 +10478,10 @@ lpfc_init(void) - "misc_register returned with status %d", error); - - if (lpfc_enable_npiv) { -- lpfc_transport_functions.vport_create = lpfc_vport_create; -- lpfc_transport_functions.vport_delete = lpfc_vport_delete; -+ pax_open_kernel(); -+ *(void **)&lpfc_transport_functions.vport_create = lpfc_vport_create; -+ *(void **)&lpfc_transport_functions.vport_delete = lpfc_vport_delete; -+ pax_close_kernel(); - } - lpfc_transport_template = - fc_attach_transport(&lpfc_transport_functions); -diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c -index 925975d..0f1fc07 100644 ---- a/drivers/scsi/lpfc/lpfc_scsi.c -+++ b/drivers/scsi/lpfc/lpfc_scsi.c -@@ -311,7 +311,7 @@ lpfc_rampdown_queue_depth(struct lpfc_hba *phba) - uint32_t evt_posted; - - spin_lock_irqsave(&phba->hbalock, flags); -- atomic_inc(&phba->num_rsrc_err); -+ atomic_inc_unchecked(&phba->num_rsrc_err); - phba->last_rsrc_error_time = jiffies; - - if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { -@@ -352,7 +352,7 @@ lpfc_rampup_queue_depth(struct lpfc_vport *vport, - unsigned long flags; - struct lpfc_hba *phba = vport->phba; - uint32_t evt_posted; -- atomic_inc(&phba->num_cmd_success); -+ atomic_inc_unchecked(&phba->num_cmd_success); - - if (vport->cfg_lun_queue_depth <= queue_depth) - return; -@@ -396,8 +396,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) - unsigned long num_rsrc_err, num_cmd_success; - int i; - -- num_rsrc_err = atomic_read(&phba->num_rsrc_err); -- num_cmd_success = atomic_read(&phba->num_cmd_success); -+ num_rsrc_err = atomic_read_unchecked(&phba->num_rsrc_err); -+ num_cmd_success = atomic_read_unchecked(&phba->num_cmd_success); - - /* - * The error and success command counters are global per -@@ -425,8 +425,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) - } - } - lpfc_destroy_vport_work_array(phba, vports); -- atomic_set(&phba->num_rsrc_err, 0); -- atomic_set(&phba->num_cmd_success, 0); -+ atomic_set_unchecked(&phba->num_rsrc_err, 0); -+ atomic_set_unchecked(&phba->num_cmd_success, 0); - } - - /** -@@ -460,8 +460,8 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) - } - } - lpfc_destroy_vport_work_array(phba, vports); -- atomic_set(&phba->num_rsrc_err, 0); -- atomic_set(&phba->num_cmd_success, 0); -+ atomic_set_unchecked(&phba->num_rsrc_err, 0); -+ atomic_set_unchecked(&phba->num_cmd_success, 0); - } - - /** -diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c -index ea8a0b4..812a124 100644 ---- a/drivers/scsi/pmcraid.c -+++ b/drivers/scsi/pmcraid.c -@@ -200,8 +200,8 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev) - res->scsi_dev = scsi_dev; - scsi_dev->hostdata = res; - res->change_detected = 0; -- atomic_set(&res->read_failures, 0); -- atomic_set(&res->write_failures, 0); -+ atomic_set_unchecked(&res->read_failures, 0); -+ atomic_set_unchecked(&res->write_failures, 0); - rc = 0; - } - spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); -@@ -2676,9 +2676,9 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd) - - /* If this was a SCSI read/write command keep count of errors */ - if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD) -- atomic_inc(&res->read_failures); -+ atomic_inc_unchecked(&res->read_failures); - else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD) -- atomic_inc(&res->write_failures); -+ atomic_inc_unchecked(&res->write_failures); - - if (!RES_IS_GSCSI(res->cfg_entry) && - masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) { -@@ -3534,7 +3534,7 @@ static int pmcraid_queuecommand_lck( - * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses - * hrrq_id assigned here in queuecommand - */ -- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) % -+ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) % - pinstance->num_hrrq; - cmd->cmd_done = pmcraid_io_done; - -@@ -3859,7 +3859,7 @@ static long pmcraid_ioctl_passthrough( - * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses - * hrrq_id assigned here in queuecommand - */ -- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) % -+ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) % - pinstance->num_hrrq; - - if (request_size) { -@@ -4497,7 +4497,7 @@ static void pmcraid_worker_function(struct work_struct *workp) - - pinstance = container_of(workp, struct pmcraid_instance, worker_q); - /* add resources only after host is added into system */ -- if (!atomic_read(&pinstance->expose_resources)) -+ if (!atomic_read_unchecked(&pinstance->expose_resources)) - return; - - fw_version = be16_to_cpu(pinstance->inq_data->fw_version); -@@ -5331,8 +5331,8 @@ static int __devinit pmcraid_init_instance( - init_waitqueue_head(&pinstance->reset_wait_q); - - atomic_set(&pinstance->outstanding_cmds, 0); -- atomic_set(&pinstance->last_message_id, 0); -- atomic_set(&pinstance->expose_resources, 0); -+ atomic_set_unchecked(&pinstance->last_message_id, 0); -+ atomic_set_unchecked(&pinstance->expose_resources, 0); - - INIT_LIST_HEAD(&pinstance->free_res_q); - INIT_LIST_HEAD(&pinstance->used_res_q); -@@ -6047,7 +6047,7 @@ static int __devinit pmcraid_probe( - /* Schedule worker thread to handle CCN and take care of adding and - * removing devices to OS - */ -- atomic_set(&pinstance->expose_resources, 1); -+ atomic_set_unchecked(&pinstance->expose_resources, 1); - schedule_work(&pinstance->worker_q); - return rc; - -diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h -index e1d150f..6c6df44 100644 ---- a/drivers/scsi/pmcraid.h -+++ b/drivers/scsi/pmcraid.h -@@ -748,7 +748,7 @@ struct pmcraid_instance { - struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS]; - - /* Message id as filled in last fired IOARCB, used to identify HRRQ */ -- atomic_t last_message_id; -+ atomic_unchecked_t last_message_id; - - /* configuration table */ - struct pmcraid_config_table *cfg_table; -@@ -777,7 +777,7 @@ struct pmcraid_instance { - atomic_t outstanding_cmds; - - /* should add/delete resources to mid-layer now ?*/ -- atomic_t expose_resources; -+ atomic_unchecked_t expose_resources; - - - -@@ -813,8 +813,8 @@ struct pmcraid_resource_entry { - struct pmcraid_config_table_entry_ext cfg_entry_ext; - }; - struct scsi_device *scsi_dev; /* Link scsi_device structure */ -- atomic_t read_failures; /* count of failed READ commands */ -- atomic_t write_failures; /* count of failed WRITE commands */ -+ atomic_unchecked_t read_failures; /* count of failed READ commands */ -+ atomic_unchecked_t write_failures; /* count of failed WRITE commands */ - - /* To indicate add/delete/modify during CCN */ - u8 change_detected; -diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c -index 5ab9530..2dd80f7 100644 ---- a/drivers/scsi/qla2xxx/qla_attr.c -+++ b/drivers/scsi/qla2xxx/qla_attr.c -@@ -1855,7 +1855,7 @@ qla24xx_vport_disable(struct fc_vport *fc_vport, bool disable) - return 0; - } - --struct fc_function_template qla2xxx_transport_functions = { -+fc_function_template_no_const qla2xxx_transport_functions = { - - .show_host_node_name = 1, - .show_host_port_name = 1, -@@ -1902,7 +1902,7 @@ struct fc_function_template qla2xxx_transport_functions = { - .bsg_timeout = qla24xx_bsg_timeout, - }; - --struct fc_function_template qla2xxx_transport_vport_functions = { -+fc_function_template_no_const qla2xxx_transport_vport_functions = { - - .show_host_node_name = 1, - .show_host_port_name = 1, -diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h -index 39007f5..7fafc64 100644 ---- a/drivers/scsi/qla2xxx/qla_def.h -+++ b/drivers/scsi/qla2xxx/qla_def.h -@@ -2284,7 +2284,7 @@ struct isp_operations { - int (*start_scsi) (srb_t *); - int (*abort_isp) (struct scsi_qla_host *); - int (*iospace_config)(struct qla_hw_data*); --}; -+} __no_const; - - /* MSI-X Support *************************************************************/ - -diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h -index 9eacd2d..d79629c 100644 ---- a/drivers/scsi/qla2xxx/qla_gbl.h -+++ b/drivers/scsi/qla2xxx/qla_gbl.h -@@ -484,8 +484,8 @@ extern void qla2x00_get_sym_node_name(scsi_qla_host_t *, uint8_t *); - struct device_attribute; - extern struct device_attribute *qla2x00_host_attrs[]; - struct fc_function_template; --extern struct fc_function_template qla2xxx_transport_functions; --extern struct fc_function_template qla2xxx_transport_vport_functions; -+extern fc_function_template_no_const qla2xxx_transport_functions; -+extern fc_function_template_no_const qla2xxx_transport_vport_functions; - extern void qla2x00_alloc_sysfs_attr(scsi_qla_host_t *); - extern void qla2x00_free_sysfs_attr(scsi_qla_host_t *); - extern void qla2x00_init_host_attr(scsi_qla_host_t *); -diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h -index 7fdba7f..1b4b2c2 100644 ---- a/drivers/scsi/qla4xxx/ql4_def.h -+++ b/drivers/scsi/qla4xxx/ql4_def.h -@@ -268,7 +268,7 @@ struct ddb_entry { - * (4000 only) */ - atomic_t relogin_timer; /* Max Time to wait for - * relogin to complete */ -- atomic_t relogin_retry_count; /* Num of times relogin has been -+ atomic_unchecked_t relogin_retry_count; /* Num of times relogin has been - * retried */ - uint32_t default_time2wait; /* Default Min time between - * relogins (+aens) */ -diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c -index 9da4266..377b3b6 100644 ---- a/drivers/scsi/qla4xxx/ql4_os.c -+++ b/drivers/scsi/qla4xxx/ql4_os.c -@@ -2615,12 +2615,12 @@ static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess) - */ - if (!iscsi_is_session_online(cls_sess)) { - /* Reset retry relogin timer */ -- atomic_inc(&ddb_entry->relogin_retry_count); -+ atomic_inc_unchecked(&ddb_entry->relogin_retry_count); - DEBUG2(ql4_printk(KERN_INFO, ha, - "%s: index[%d] relogin timed out-retrying" - " relogin (%d), retry (%d)\n", __func__, - ddb_entry->fw_ddb_index, -- atomic_read(&ddb_entry->relogin_retry_count), -+ atomic_read_unchecked(&ddb_entry->relogin_retry_count), - ddb_entry->default_time2wait + 4)); - set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags); - atomic_set(&ddb_entry->retry_relogin_timer, -@@ -4635,7 +4635,7 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha, - - atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY); - atomic_set(&ddb_entry->relogin_timer, 0); -- atomic_set(&ddb_entry->relogin_retry_count, 0); -+ atomic_set_unchecked(&ddb_entry->relogin_retry_count, 0); - def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout); - ddb_entry->default_relogin_timeout = - (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ? -diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c -index 2936b44..546ecdb 100644 ---- a/drivers/scsi/scsi.c -+++ b/drivers/scsi/scsi.c -@@ -660,7 +660,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd) - unsigned long timeout; - int rtn = 0; - -- atomic_inc(&cmd->device->iorequest_cnt); -+ atomic_inc_unchecked(&cmd->device->iorequest_cnt); - - /* check if the device is still usable */ - if (unlikely(cmd->device->sdev_state == SDEV_DEL)) { -diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c -index faa790f..7e351ddd 100644 ---- a/drivers/scsi/scsi_lib.c -+++ b/drivers/scsi/scsi_lib.c -@@ -1442,7 +1442,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q) - shost = sdev->host; - scsi_init_cmd_errh(cmd); - cmd->result = DID_NO_CONNECT << 16; -- atomic_inc(&cmd->device->iorequest_cnt); -+ atomic_inc_unchecked(&cmd->device->iorequest_cnt); - - /* - * SCSI request completion path will do scsi_device_unbusy(), -@@ -1468,9 +1468,9 @@ static void scsi_softirq_done(struct request *rq) - - INIT_LIST_HEAD(&cmd->eh_entry); - -- atomic_inc(&cmd->device->iodone_cnt); -+ atomic_inc_unchecked(&cmd->device->iodone_cnt); - if (cmd->result) -- atomic_inc(&cmd->device->ioerr_cnt); -+ atomic_inc_unchecked(&cmd->device->ioerr_cnt); - - disposition = scsi_decide_disposition(cmd); - if (disposition != SUCCESS && -diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c -index 931a7d9..0c2a754 100644 ---- a/drivers/scsi/scsi_sysfs.c -+++ b/drivers/scsi/scsi_sysfs.c -@@ -658,7 +658,7 @@ show_iostat_##field(struct device *dev, struct device_attribute *attr, \ - char *buf) \ - { \ - struct scsi_device *sdev = to_scsi_device(dev); \ -- unsigned long long count = atomic_read(&sdev->field); \ -+ unsigned long long count = atomic_read_unchecked(&sdev->field); \ - return snprintf(buf, 20, "0x%llx\n", count); \ - } \ - static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) -diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c -index 84a1fdf..693b0d6 100644 ---- a/drivers/scsi/scsi_tgt_lib.c -+++ b/drivers/scsi/scsi_tgt_lib.c -@@ -362,7 +362,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, - int err; - - dprintk("%lx %u\n", uaddr, len); -- err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL); -+ err = blk_rq_map_user(q, rq, NULL, (void __user *)uaddr, len, GFP_KERNEL); - if (err) { - /* - * TODO: need to fixup sg_tablesize, max_segment_size, -diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c -index e894ca7..de9d7660 100644 ---- a/drivers/scsi/scsi_transport_fc.c -+++ b/drivers/scsi/scsi_transport_fc.c -@@ -498,7 +498,7 @@ static DECLARE_TRANSPORT_CLASS(fc_vport_class, - * Netlink Infrastructure - */ - --static atomic_t fc_event_seq; -+static atomic_unchecked_t fc_event_seq; - - /** - * fc_get_event_number - Obtain the next sequential FC event number -@@ -511,7 +511,7 @@ static atomic_t fc_event_seq; - u32 - fc_get_event_number(void) - { -- return atomic_add_return(1, &fc_event_seq); -+ return atomic_add_return_unchecked(1, &fc_event_seq); - } - EXPORT_SYMBOL(fc_get_event_number); - -@@ -659,7 +659,7 @@ static __init int fc_transport_init(void) - { - int error; - -- atomic_set(&fc_event_seq, 0); -+ atomic_set_unchecked(&fc_event_seq, 0); - - error = transport_class_register(&fc_host_class); - if (error) -@@ -849,7 +849,7 @@ static int fc_str_to_dev_loss(const char *buf, unsigned long *val) - char *cp; - - *val = simple_strtoul(buf, &cp, 0); -- if ((*cp && (*cp != '\n')) || (*val < 0)) -+ if (*cp && (*cp != '\n')) - return -EINVAL; - /* - * Check for overflow; dev_loss_tmo is u32 -diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c -index fa1dfaa..4bb620c 100644 ---- a/drivers/scsi/scsi_transport_iscsi.c -+++ b/drivers/scsi/scsi_transport_iscsi.c -@@ -79,7 +79,7 @@ struct iscsi_internal { - struct transport_container session_cont; - }; - --static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ -+static atomic_unchecked_t iscsi_session_nr; /* sysfs session id for next new session */ - static struct workqueue_struct *iscsi_eh_timer_workq; - - static DEFINE_IDA(iscsi_sess_ida); -@@ -1064,7 +1064,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) - int err; - - ihost = shost->shost_data; -- session->sid = atomic_add_return(1, &iscsi_session_nr); -+ session->sid = atomic_add_return_unchecked(1, &iscsi_session_nr); - - if (target_id == ISCSI_MAX_TARGET) { - id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL); -@@ -2943,7 +2943,7 @@ static __init int iscsi_transport_init(void) - printk(KERN_INFO "Loading iSCSI transport class v%s.\n", - ISCSI_TRANSPORT_VERSION); - -- atomic_set(&iscsi_session_nr, 0); -+ atomic_set_unchecked(&iscsi_session_nr, 0); - - err = class_register(&iscsi_transport_class); - if (err) -diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c -index 21a045e..ec89e03 100644 ---- a/drivers/scsi/scsi_transport_srp.c -+++ b/drivers/scsi/scsi_transport_srp.c -@@ -33,7 +33,7 @@ - #include "scsi_transport_srp_internal.h" - - struct srp_host_attrs { -- atomic_t next_port_id; -+ atomic_unchecked_t next_port_id; - }; - #define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data) - -@@ -62,7 +62,7 @@ static int srp_host_setup(struct transport_container *tc, struct device *dev, - struct Scsi_Host *shost = dev_to_shost(dev); - struct srp_host_attrs *srp_host = to_srp_host_attrs(shost); - -- atomic_set(&srp_host->next_port_id, 0); -+ atomic_set_unchecked(&srp_host->next_port_id, 0); - return 0; - } - -@@ -211,7 +211,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost, - memcpy(rport->port_id, ids->port_id, sizeof(rport->port_id)); - rport->roles = ids->roles; - -- id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id); -+ id = atomic_inc_return_unchecked(&to_srp_host_attrs(shost)->next_port_id); - dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id); - - transport_setup_device(&rport->dev); -diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c -index 8afedd6..0981401 100644 ---- a/drivers/scsi/sd.c -+++ b/drivers/scsi/sd.c -@@ -2709,7 +2709,7 @@ static int sd_probe(struct device *dev) - sdkp->disk = gd; - sdkp->index = index; - atomic_set(&sdkp->openers, 0); -- atomic_set(&sdkp->device->ioerr_cnt, 0); -+ atomic_set_unchecked(&sdkp->device->ioerr_cnt, 0); - - if (!sdp->request_queue->rq_timeout) { - if (sdp->type != TYPE_MOD) -diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c -index 9c5c5f2..8414557 100644 ---- a/drivers/scsi/sg.c -+++ b/drivers/scsi/sg.c -@@ -1101,7 +1101,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg) - sdp->disk->disk_name, - MKDEV(SCSI_GENERIC_MAJOR, sdp->index), - NULL, -- (char *)arg); -+ (char __user *)arg); - case BLKTRACESTART: - return blk_trace_startstop(sdp->device->request_queue, 1); - case BLKTRACESTOP: -diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c -index 84c2861..ece0a31 100644 ---- a/drivers/spi/spi.c -+++ b/drivers/spi/spi.c -@@ -1453,7 +1453,7 @@ int spi_bus_unlock(struct spi_master *master) - EXPORT_SYMBOL_GPL(spi_bus_unlock); - - /* portable code must never pass more than 32 bytes */ --#define SPI_BUFSIZ max(32,SMP_CACHE_BYTES) -+#define SPI_BUFSIZ max(32UL,SMP_CACHE_BYTES) - - static u8 *buf; - -diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c -index 34afc16..ffe44dd 100644 ---- a/drivers/staging/octeon/ethernet-rx.c -+++ b/drivers/staging/octeon/ethernet-rx.c -@@ -421,11 +421,11 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) - /* Increment RX stats for virtual ports */ - if (work->ipprt >= CVMX_PIP_NUM_INPUT_PORTS) { - #ifdef CONFIG_64BIT -- atomic64_add(1, (atomic64_t *)&priv->stats.rx_packets); -- atomic64_add(skb->len, (atomic64_t *)&priv->stats.rx_bytes); -+ atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_packets); -+ atomic64_add_unchecked(skb->len, (atomic64_unchecked_t *)&priv->stats.rx_bytes); - #else -- atomic_add(1, (atomic_t *)&priv->stats.rx_packets); -- atomic_add(skb->len, (atomic_t *)&priv->stats.rx_bytes); -+ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_packets); -+ atomic_add_unchecked(skb->len, (atomic_unchecked_t *)&priv->stats.rx_bytes); - #endif - } - netif_receive_skb(skb); -@@ -437,9 +437,9 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) - dev->name); - */ - #ifdef CONFIG_64BIT -- atomic64_add(1, (atomic64_t *)&priv->stats.rx_dropped); -+ atomic64_unchecked_add(1, (atomic64_unchecked_t *)&priv->stats.rx_dropped); - #else -- atomic_add(1, (atomic_t *)&priv->stats.rx_dropped); -+ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_dropped); - #endif - dev_kfree_skb_irq(skb); - } -diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c -index 683bedc..86dba9a 100644 ---- a/drivers/staging/octeon/ethernet.c -+++ b/drivers/staging/octeon/ethernet.c -@@ -252,11 +252,11 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) - * since the RX tasklet also increments it. - */ - #ifdef CONFIG_64BIT -- atomic64_add(rx_status.dropped_packets, -- (atomic64_t *)&priv->stats.rx_dropped); -+ atomic64_add_unchecked(rx_status.dropped_packets, -+ (atomic64_unchecked_t *)&priv->stats.rx_dropped); - #else -- atomic_add(rx_status.dropped_packets, -- (atomic_t *)&priv->stats.rx_dropped); -+ atomic_add_unchecked(rx_status.dropped_packets, -+ (atomic_unchecked_t *)&priv->stats.rx_dropped); - #endif - } - -diff --git a/drivers/staging/omapdrm/omap_drv.c b/drivers/staging/omapdrm/omap_drv.c -index 4beab94..44149ee 100644 ---- a/drivers/staging/omapdrm/omap_drv.c -+++ b/drivers/staging/omapdrm/omap_drv.c -@@ -761,7 +761,6 @@ static struct drm_driver omap_drm_driver = { - .irq_postinstall = dev_irq_postinstall, - .irq_uninstall = dev_irq_uninstall, - .irq_handler = dev_irq_handler, -- .reclaim_buffers = drm_core_reclaim_buffers, - #ifdef CONFIG_DEBUG_FS - .debugfs_init = omap_debugfs_init, - .debugfs_cleanup = omap_debugfs_cleanup, -diff --git a/drivers/staging/rtl8712/rtl871x_io.h b/drivers/staging/rtl8712/rtl871x_io.h -index dc23395..cf7e9b1 100644 ---- a/drivers/staging/rtl8712/rtl871x_io.h -+++ b/drivers/staging/rtl8712/rtl871x_io.h -@@ -108,7 +108,7 @@ struct _io_ops { - u8 *pmem); - u32 (*_write_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, - u8 *pmem); --}; -+} __no_const; - - struct io_req { - struct list_head list; -diff --git a/drivers/staging/sbe-2t3e3/netdev.c b/drivers/staging/sbe-2t3e3/netdev.c -index c7b5e8b..783d6cb 100644 ---- a/drivers/staging/sbe-2t3e3/netdev.c -+++ b/drivers/staging/sbe-2t3e3/netdev.c -@@ -51,7 +51,7 @@ int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - t3e3_if_config(sc, cmd_2t3e3, (char *)¶m, &resp, &rlen); - - if (rlen) -- if (copy_to_user(data, &resp, rlen)) -+ if (rlen > sizeof resp || copy_to_user(data, &resp, rlen)) - return -EFAULT; - - return 0; -diff --git a/drivers/staging/usbip/usbip_common.h b/drivers/staging/usbip/usbip_common.h -index 5d89c0f..9261317 100644 ---- a/drivers/staging/usbip/usbip_common.h -+++ b/drivers/staging/usbip/usbip_common.h -@@ -289,7 +289,7 @@ struct usbip_device { - void (*shutdown)(struct usbip_device *); - void (*reset)(struct usbip_device *); - void (*unusable)(struct usbip_device *); -- } eh_ops; -+ } __no_const eh_ops; - }; - - #define kthread_get_run(threadfn, data, namefmt, ...) \ -diff --git a/drivers/staging/usbip/vhci.h b/drivers/staging/usbip/vhci.h -index c66b8b3..a4a035b 100644 ---- a/drivers/staging/usbip/vhci.h -+++ b/drivers/staging/usbip/vhci.h -@@ -83,7 +83,7 @@ struct vhci_hcd { - unsigned resuming:1; - unsigned long re_timeout; - -- atomic_t seqnum; -+ atomic_unchecked_t seqnum; - - /* - * NOTE: -diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c -index 12a9a5f..afd8295 100644 ---- a/drivers/staging/usbip/vhci_hcd.c -+++ b/drivers/staging/usbip/vhci_hcd.c -@@ -471,7 +471,7 @@ static void vhci_tx_urb(struct urb *urb) - return; - } - -- priv->seqnum = atomic_inc_return(&the_controller->seqnum); -+ priv->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum); - if (priv->seqnum == 0xffff) - dev_info(&urb->dev->dev, "seqnum max\n"); - -@@ -723,7 +723,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) - return -ENOMEM; - } - -- unlink->seqnum = atomic_inc_return(&the_controller->seqnum); -+ unlink->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum); - if (unlink->seqnum == 0xffff) - pr_info("seqnum max\n"); - -@@ -911,7 +911,7 @@ static int vhci_start(struct usb_hcd *hcd) - vdev->rhport = rhport; - } - -- atomic_set(&vhci->seqnum, 0); -+ atomic_set_unchecked(&vhci->seqnum, 0); - spin_lock_init(&vhci->lock); - - hcd->power_budget = 0; /* no limit */ -diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c -index f0eaf04..5a82e06 100644 ---- a/drivers/staging/usbip/vhci_rx.c -+++ b/drivers/staging/usbip/vhci_rx.c -@@ -77,7 +77,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, - if (!urb) { - pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum); - pr_info("max seqnum %d\n", -- atomic_read(&the_controller->seqnum)); -+ atomic_read_unchecked(&the_controller->seqnum)); - usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); - return; - } -diff --git a/drivers/staging/vt6655/hostap.c b/drivers/staging/vt6655/hostap.c -index 6ac6f45..1b208ba 100644 ---- a/drivers/staging/vt6655/hostap.c -+++ b/drivers/staging/vt6655/hostap.c -@@ -73,14 +73,13 @@ static int msglevel =MSG_LEVEL_INFO; - * - */ - -+static net_device_ops_no_const apdev_netdev_ops; -+ - static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) - { - PSDevice apdev_priv; - struct net_device *dev = pDevice->dev; - int ret; -- const struct net_device_ops apdev_netdev_ops = { -- .ndo_start_xmit = pDevice->tx_80211, -- }; - - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name); - -@@ -92,6 +91,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) - *apdev_priv = *pDevice; - memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN); - -+ /* only half broken now */ -+ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211; - pDevice->apdev->netdev_ops = &apdev_netdev_ops; - - pDevice->apdev->type = ARPHRD_IEEE80211; -diff --git a/drivers/staging/vt6656/hostap.c b/drivers/staging/vt6656/hostap.c -index 682002a..35ed5cf 100644 ---- a/drivers/staging/vt6656/hostap.c -+++ b/drivers/staging/vt6656/hostap.c -@@ -60,14 +60,13 @@ static int msglevel =MSG_LEVEL_INFO; - * - */ - -+static net_device_ops_no_const apdev_netdev_ops; -+ - static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) - { - PSDevice apdev_priv; - struct net_device *dev = pDevice->dev; - int ret; -- const struct net_device_ops apdev_netdev_ops = { -- .ndo_start_xmit = pDevice->tx_80211, -- }; - - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name); - -@@ -79,6 +78,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) - *apdev_priv = *pDevice; - memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN); - -+ /* only half broken now */ -+ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211; - pDevice->apdev->netdev_ops = &apdev_netdev_ops; - - pDevice->apdev->type = ARPHRD_IEEE80211; -diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c -index 7843dfd..3db105f 100644 ---- a/drivers/staging/wlan-ng/hfa384x_usb.c -+++ b/drivers/staging/wlan-ng/hfa384x_usb.c -@@ -204,7 +204,7 @@ static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx); - - struct usbctlx_completor { - int (*complete) (struct usbctlx_completor *); --}; -+} __no_const; - - static int - hfa384x_usbctlx_complete_sync(hfa384x_t *hw, -diff --git a/drivers/staging/zcache/tmem.c b/drivers/staging/zcache/tmem.c -index eaa9021..43f023b 100644 ---- a/drivers/staging/zcache/tmem.c -+++ b/drivers/staging/zcache/tmem.c -@@ -39,7 +39,7 @@ - * A tmem host implementation must use this function to register callbacks - * for memory allocation. - */ --static struct tmem_hostops tmem_hostops; -+static tmem_hostops_no_const tmem_hostops; - - static void tmem_objnode_tree_init(void); - -@@ -53,7 +53,7 @@ void tmem_register_hostops(struct tmem_hostops *m) - * A tmem host implementation must use this function to register - * callbacks for a page-accessible memory (PAM) implementation - */ --static struct tmem_pamops tmem_pamops; -+static tmem_pamops_no_const tmem_pamops; - - void tmem_register_pamops(struct tmem_pamops *m) - { -diff --git a/drivers/staging/zcache/tmem.h b/drivers/staging/zcache/tmem.h -index 0d4aa82..f7832d4 100644 ---- a/drivers/staging/zcache/tmem.h -+++ b/drivers/staging/zcache/tmem.h -@@ -180,6 +180,7 @@ struct tmem_pamops { - void (*new_obj)(struct tmem_obj *); - int (*replace_in_obj)(void *, struct tmem_obj *); - }; -+typedef struct tmem_pamops __no_const tmem_pamops_no_const; - extern void tmem_register_pamops(struct tmem_pamops *m); - - /* memory allocation methods provided by the host implementation */ -@@ -189,6 +190,7 @@ struct tmem_hostops { - struct tmem_objnode *(*objnode_alloc)(struct tmem_pool *); - void (*objnode_free)(struct tmem_objnode *, struct tmem_pool *); - }; -+typedef struct tmem_hostops __no_const tmem_hostops_no_const; - extern void tmem_register_hostops(struct tmem_hostops *m); - - /* core tmem accessor functions */ -diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c -index 65e6320..80a3f3a 100644 ---- a/drivers/target/target_core_transport.c -+++ b/drivers/target/target_core_transport.c -@@ -1099,7 +1099,7 @@ struct se_device *transport_add_device_to_core_hba( - spin_lock_init(&dev->se_port_lock); - spin_lock_init(&dev->se_tmr_lock); - spin_lock_init(&dev->qf_cmd_lock); -- atomic_set(&dev->dev_ordered_id, 0); -+ atomic_set_unchecked(&dev->dev_ordered_id, 0); - - se_dev_set_default_attribs(dev, dev_limits); - -@@ -1289,7 +1289,7 @@ static int transport_check_alloc_task_attr(struct se_cmd *cmd) - * Used to determine when ORDERED commands should go from - * Dormant to Active status. - */ -- cmd->se_ordered_id = atomic_inc_return(&cmd->se_dev->dev_ordered_id); -+ cmd->se_ordered_id = atomic_inc_return_unchecked(&cmd->se_dev->dev_ordered_id); - smp_mb__after_atomic_inc(); - pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n", - cmd->se_ordered_id, cmd->sam_task_attr, -diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c -index e61cabd..7617d26 100644 ---- a/drivers/tty/cyclades.c -+++ b/drivers/tty/cyclades.c -@@ -1589,10 +1589,10 @@ static int cy_open(struct tty_struct *tty, struct file *filp) - printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, - info->port.count); - #endif -- info->port.count++; -+ atomic_inc(&info->port.count); - #ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", -- current->pid, info->port.count); -+ current->pid, atomic_read(&info->port.count)); - #endif - - /* -@@ -3987,7 +3987,7 @@ static int cyclades_proc_show(struct seq_file *m, void *v) - for (j = 0; j < cy_card[i].nports; j++) { - info = &cy_card[i].ports[j]; - -- if (info->port.count) { -+ if (atomic_read(&info->port.count)) { - /* XXX is the ldisc num worth this? */ - struct tty_struct *tty; - struct tty_ldisc *ld; -diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c -index 2d691eb..be02ebd 100644 ---- a/drivers/tty/hvc/hvc_console.c -+++ b/drivers/tty/hvc/hvc_console.c -@@ -315,7 +315,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp) - - spin_lock_irqsave(&hp->port.lock, flags); - /* Check and then increment for fast path open. */ -- if (hp->port.count++ > 0) { -+ if (atomic_inc_return(&hp->port.count) > 1) { - spin_unlock_irqrestore(&hp->port.lock, flags); - hvc_kick(); - return 0; -@@ -366,7 +366,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp) - - spin_lock_irqsave(&hp->port.lock, flags); - -- if (--hp->port.count == 0) { -+ if (atomic_dec_return(&hp->port.count) == 0) { - spin_unlock_irqrestore(&hp->port.lock, flags); - /* We are done with the tty pointer now. */ - tty_port_tty_set(&hp->port, NULL); -@@ -384,9 +384,9 @@ static void hvc_close(struct tty_struct *tty, struct file * filp) - */ - tty_wait_until_sent_from_close(tty, HVC_CLOSE_WAIT); - } else { -- if (hp->port.count < 0) -+ if (atomic_read(&hp->port.count) < 0) - printk(KERN_ERR "hvc_close %X: oops, count is %d\n", -- hp->vtermno, hp->port.count); -+ hp->vtermno, atomic_read(&hp->port.count)); - spin_unlock_irqrestore(&hp->port.lock, flags); - } - -@@ -412,13 +412,13 @@ static void hvc_hangup(struct tty_struct *tty) - * open->hangup case this can be called after the final close so prevent - * that from happening for now. - */ -- if (hp->port.count <= 0) { -+ if (atomic_read(&hp->port.count) <= 0) { - spin_unlock_irqrestore(&hp->port.lock, flags); - return; - } - -- temp_open_count = hp->port.count; -- hp->port.count = 0; -+ temp_open_count = atomic_read(&hp->port.count); -+ atomic_set(&hp->port.count, 0); - spin_unlock_irqrestore(&hp->port.lock, flags); - tty_port_tty_set(&hp->port, NULL); - -@@ -471,7 +471,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count - return -EPIPE; - - /* FIXME what's this (unprotected) check for? */ -- if (hp->port.count <= 0) -+ if (atomic_read(&hp->port.count) <= 0) - return -EIO; - - spin_lock_irqsave(&hp->lock, flags); -diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c -index d56788c..12d8f85 100644 ---- a/drivers/tty/hvc/hvcs.c -+++ b/drivers/tty/hvc/hvcs.c -@@ -83,6 +83,7 @@ - #include - #include - #include -+#include - - /* - * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00). -@@ -416,7 +417,7 @@ static ssize_t hvcs_vterm_state_store(struct device *dev, struct device_attribut - - spin_lock_irqsave(&hvcsd->lock, flags); - -- if (hvcsd->port.count > 0) { -+ if (atomic_read(&hvcsd->port.count) > 0) { - spin_unlock_irqrestore(&hvcsd->lock, flags); - printk(KERN_INFO "HVCS: vterm state unchanged. " - "The hvcs device node is still in use.\n"); -@@ -1134,7 +1135,7 @@ static int hvcs_open(struct tty_struct *tty, struct file *filp) - if ((retval = hvcs_partner_connect(hvcsd))) - goto error_release; - -- hvcsd->port.count = 1; -+ atomic_set(&hvcsd->port.count, 1); - hvcsd->port.tty = tty; - tty->driver_data = hvcsd; - -@@ -1168,7 +1169,7 @@ fast_open: - - spin_lock_irqsave(&hvcsd->lock, flags); - tty_port_get(&hvcsd->port); -- hvcsd->port.count++; -+ atomic_inc(&hvcsd->port.count); - hvcsd->todo_mask |= HVCS_SCHED_READ; - spin_unlock_irqrestore(&hvcsd->lock, flags); - -@@ -1212,7 +1213,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp) - hvcsd = tty->driver_data; - - spin_lock_irqsave(&hvcsd->lock, flags); -- if (--hvcsd->port.count == 0) { -+ if (atomic_dec_and_test(&hvcsd->port.count)) { - - vio_disable_interrupts(hvcsd->vdev); - -@@ -1238,10 +1239,10 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp) - free_irq(irq, hvcsd); - tty_port_put(&hvcsd->port); - return; -- } else if (hvcsd->port.count < 0) { -+ } else if (atomic_read(&hvcsd->port.count) < 0) { - printk(KERN_ERR "HVCS: vty-server@%X open_count: %d" - " is missmanaged.\n", -- hvcsd->vdev->unit_address, hvcsd->port.count); -+ hvcsd->vdev->unit_address, atomic_read(&hvcsd->port.count)); - } - - spin_unlock_irqrestore(&hvcsd->lock, flags); -@@ -1257,7 +1258,7 @@ static void hvcs_hangup(struct tty_struct * tty) - - spin_lock_irqsave(&hvcsd->lock, flags); - /* Preserve this so that we know how many kref refs to put */ -- temp_open_count = hvcsd->port.count; -+ temp_open_count = atomic_read(&hvcsd->port.count); - - /* - * Don't kref put inside the spinlock because the destruction -@@ -1272,7 +1273,7 @@ static void hvcs_hangup(struct tty_struct * tty) - tty->driver_data = NULL; - hvcsd->port.tty = NULL; - -- hvcsd->port.count = 0; -+ atomic_set(&hvcsd->port.count, 0); - - /* This will drop any buffered data on the floor which is OK in a hangup - * scenario. */ -@@ -1343,7 +1344,7 @@ static int hvcs_write(struct tty_struct *tty, - * the middle of a write operation? This is a crummy place to do this - * but we want to keep it all in the spinlock. - */ -- if (hvcsd->port.count <= 0) { -+ if (atomic_read(&hvcsd->port.count) <= 0) { - spin_unlock_irqrestore(&hvcsd->lock, flags); - return -ENODEV; - } -@@ -1417,7 +1418,7 @@ static int hvcs_write_room(struct tty_struct *tty) - { - struct hvcs_struct *hvcsd = tty->driver_data; - -- if (!hvcsd || hvcsd->port.count <= 0) -+ if (!hvcsd || atomic_read(&hvcsd->port.count) <= 0) - return 0; - - return HVCS_BUFF_LEN - hvcsd->chars_in_buffer; -diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c -index f8b5fa0..4ba9f89 100644 ---- a/drivers/tty/ipwireless/tty.c -+++ b/drivers/tty/ipwireless/tty.c -@@ -29,6 +29,7 @@ - #include - #include - #include -+#include - - #include "tty.h" - #include "network.h" -@@ -99,10 +100,10 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp) - mutex_unlock(&tty->ipw_tty_mutex); - return -ENODEV; - } -- if (tty->port.count == 0) -+ if (atomic_read(&tty->port.count) == 0) - tty->tx_bytes_queued = 0; - -- tty->port.count++; -+ atomic_inc(&tty->port.count); - - tty->port.tty = linux_tty; - linux_tty->driver_data = tty; -@@ -118,9 +119,7 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp) - - static void do_ipw_close(struct ipw_tty *tty) - { -- tty->port.count--; -- -- if (tty->port.count == 0) { -+ if (atomic_dec_return(&tty->port.count) == 0) { - struct tty_struct *linux_tty = tty->port.tty; - - if (linux_tty != NULL) { -@@ -141,7 +140,7 @@ static void ipw_hangup(struct tty_struct *linux_tty) - return; - - mutex_lock(&tty->ipw_tty_mutex); -- if (tty->port.count == 0) { -+ if (atomic_read(&tty->port.count) == 0) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } -@@ -170,7 +169,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, - return; - } - -- if (!tty->port.count) { -+ if (!atomic_read(&tty->port.count)) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } -@@ -212,7 +211,7 @@ static int ipw_write(struct tty_struct *linux_tty, - return -ENODEV; - - mutex_lock(&tty->ipw_tty_mutex); -- if (!tty->port.count) { -+ if (!atomic_read(&tty->port.count)) { - mutex_unlock(&tty->ipw_tty_mutex); - return -EINVAL; - } -@@ -252,7 +251,7 @@ static int ipw_write_room(struct tty_struct *linux_tty) - if (!tty) - return -ENODEV; - -- if (!tty->port.count) -+ if (!atomic_read(&tty->port.count)) - return -EINVAL; - - room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; -@@ -294,7 +293,7 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty) - if (!tty) - return 0; - -- if (!tty->port.count) -+ if (!atomic_read(&tty->port.count)) - return 0; - - return tty->tx_bytes_queued; -@@ -375,7 +374,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty) - if (!tty) - return -ENODEV; - -- if (!tty->port.count) -+ if (!atomic_read(&tty->port.count)) - return -EINVAL; - - return get_control_lines(tty); -@@ -391,7 +390,7 @@ ipw_tiocmset(struct tty_struct *linux_tty, - if (!tty) - return -ENODEV; - -- if (!tty->port.count) -+ if (!atomic_read(&tty->port.count)) - return -EINVAL; - - return set_control_lines(tty, set, clear); -@@ -405,7 +404,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty, - if (!tty) - return -ENODEV; - -- if (!tty->port.count) -+ if (!atomic_read(&tty->port.count)) - return -EINVAL; - - /* FIXME: Exactly how is the tty object locked here .. */ -@@ -561,7 +560,7 @@ void ipwireless_tty_free(struct ipw_tty *tty) - * are gone */ - mutex_lock(&ttyj->ipw_tty_mutex); - } -- while (ttyj->port.count) -+ while (atomic_read(&ttyj->port.count)) - do_ipw_close(ttyj); - ipwireless_disassociate_network_ttys(network, - ttyj->channel_idx); -diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c -index 324467d..504cc25 100644 ---- a/drivers/tty/moxa.c -+++ b/drivers/tty/moxa.c -@@ -1172,7 +1172,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp) - } - - ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; -- ch->port.count++; -+ atomic_inc(&ch->port.count); - tty->driver_data = ch; - tty_port_tty_set(&ch->port, tty); - mutex_lock(&ch->port.mutex); -diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c -index 4a418e4..8968f84 100644 ---- a/drivers/tty/n_gsm.c -+++ b/drivers/tty/n_gsm.c -@@ -1639,7 +1639,7 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr) - kref_init(&dlci->ref); - mutex_init(&dlci->mutex); - dlci->fifo = &dlci->_fifo; -- if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) { -+ if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL)) { - kfree(dlci); - return NULL; - } -@@ -2921,7 +2921,7 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp) - if (dlci == NULL) - return -ENOMEM; - port = &dlci->port; -- port->count++; -+ atomic_inc(&port->count); - tty->driver_data = dlci; - dlci_get(dlci); - dlci_get(dlci->gsm->dlci[0]); -diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c -index 26f0d0e..b7c4273 100644 ---- a/drivers/tty/n_tty.c -+++ b/drivers/tty/n_tty.c -@@ -2124,6 +2124,7 @@ void n_tty_inherit_ops(struct tty_ldisc_ops *ops) - { - *ops = tty_ldisc_N_TTY; - ops->owner = NULL; -- ops->refcount = ops->flags = 0; -+ atomic_set(&ops->refcount, 0); -+ ops->flags = 0; - } - EXPORT_SYMBOL_GPL(n_tty_inherit_ops); -diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c -index 5505ffc..7affff9 100644 ---- a/drivers/tty/pty.c -+++ b/drivers/tty/pty.c -@@ -718,8 +718,10 @@ static void __init unix98_pty_init(void) - panic("Couldn't register Unix98 pts driver"); - - /* Now create the /dev/ptmx special device */ -+ pax_open_kernel(); - tty_default_fops(&ptmx_fops); -- ptmx_fops.open = ptmx_open; -+ *(void **)&ptmx_fops.open = ptmx_open; -+ pax_close_kernel(); - - cdev_init(&ptmx_cdev, &ptmx_fops); - if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) || -diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c -index 777d5f9..56d67ca 100644 ---- a/drivers/tty/rocket.c -+++ b/drivers/tty/rocket.c -@@ -924,7 +924,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp) - tty->driver_data = info; - tty_port_tty_set(port, tty); - -- if (port->count++ == 0) { -+ if (atomic_inc_return(&port->count) == 1) { - atomic_inc(&rp_num_ports_open); - - #ifdef ROCKET_DEBUG_OPEN -@@ -933,7 +933,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp) - #endif - } - #ifdef ROCKET_DEBUG_OPEN -- printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count); -+ printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, atomic-read(&info->port.count)); - #endif - - /* -@@ -1528,7 +1528,7 @@ static void rp_hangup(struct tty_struct *tty) - spin_unlock_irqrestore(&info->port.lock, flags); - return; - } -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - atomic_dec(&rp_num_ports_open); - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - spin_unlock_irqrestore(&info->port.lock, flags); -diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c -index 2b42a01..32a2ed3 100644 ---- a/drivers/tty/serial/kgdboc.c -+++ b/drivers/tty/serial/kgdboc.c -@@ -24,8 +24,9 @@ - #define MAX_CONFIG_LEN 40 - - static struct kgdb_io kgdboc_io_ops; -+static struct kgdb_io kgdboc_io_ops_console; - --/* -1 = init not run yet, 0 = unconfigured, 1 = configured. */ -+/* -1 = init not run yet, 0 = unconfigured, 1/2 = configured. */ - static int configured = -1; - - static char config[MAX_CONFIG_LEN]; -@@ -148,6 +149,8 @@ static void cleanup_kgdboc(void) - kgdboc_unregister_kbd(); - if (configured == 1) - kgdb_unregister_io_module(&kgdboc_io_ops); -+ else if (configured == 2) -+ kgdb_unregister_io_module(&kgdboc_io_ops_console); - } - - static int configure_kgdboc(void) -@@ -157,13 +160,13 @@ static int configure_kgdboc(void) - int err; - char *cptr = config; - struct console *cons; -+ int is_console = 0; - - err = kgdboc_option_setup(config); - if (err || !strlen(config) || isspace(config[0])) - goto noconfig; - - err = -ENODEV; -- kgdboc_io_ops.is_console = 0; - kgdb_tty_driver = NULL; - - kgdboc_use_kms = 0; -@@ -184,7 +187,7 @@ static int configure_kgdboc(void) - int idx; - if (cons->device && cons->device(cons, &idx) == p && - idx == tty_line) { -- kgdboc_io_ops.is_console = 1; -+ is_console = 1; - break; - } - cons = cons->next; -@@ -194,12 +197,16 @@ static int configure_kgdboc(void) - kgdb_tty_line = tty_line; - - do_register: -- err = kgdb_register_io_module(&kgdboc_io_ops); -+ if (is_console) { -+ err = kgdb_register_io_module(&kgdboc_io_ops_console); -+ configured = 2; -+ } else { -+ err = kgdb_register_io_module(&kgdboc_io_ops); -+ configured = 1; -+ } - if (err) - goto noconfig; - -- configured = 1; -- - return 0; - - noconfig: -@@ -213,7 +220,7 @@ noconfig: - static int __init init_kgdboc(void) - { - /* Already configured? */ -- if (configured == 1) -+ if (configured >= 1) - return 0; - - return configure_kgdboc(); -@@ -262,7 +269,7 @@ static int param_set_kgdboc_var(const char *kmessage, struct kernel_param *kp) - if (config[len - 1] == '\n') - config[len - 1] = '\0'; - -- if (configured == 1) -+ if (configured >= 1) - cleanup_kgdboc(); - - /* Go and configure with the new params. */ -@@ -302,6 +309,15 @@ static struct kgdb_io kgdboc_io_ops = { - .post_exception = kgdboc_post_exp_handler, - }; - -+static struct kgdb_io kgdboc_io_ops_console = { -+ .name = "kgdboc", -+ .read_char = kgdboc_get_char, -+ .write_char = kgdboc_put_char, -+ .pre_exception = kgdboc_pre_exp_handler, -+ .post_exception = kgdboc_post_exp_handler, -+ .is_console = 1 -+}; -+ - #ifdef CONFIG_KGDB_SERIAL_CONSOLE - /* This is only available if kgdboc is a built in for early debugging */ - static int __init kgdboc_early_init(char *opt) -diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c -index a21dc8e..fe43e9e 100644 ---- a/drivers/tty/serial/serial_core.c -+++ b/drivers/tty/serial/serial_core.c -@@ -1392,7 +1392,7 @@ static void uart_hangup(struct tty_struct *tty) - uart_flush_buffer(tty); - uart_shutdown(tty, state); - spin_lock_irqsave(&port->lock, flags); -- port->count = 0; -+ atomic_set(&port->count, 0); - clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); - spin_unlock_irqrestore(&port->lock, flags); - tty_port_tty_set(port, NULL); -@@ -1488,7 +1488,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp) - goto end; - } - -- port->count++; -+ atomic_inc(&port->count); - if (!state->uart_port || state->uart_port->flags & UPF_DEAD) { - retval = -ENXIO; - goto err_dec_count; -@@ -1515,7 +1515,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp) - /* - * Make sure the device is in D0 state. - */ -- if (port->count == 1) -+ if (atomic_read(&port->count) == 1) - uart_change_pm(state, 0); - - /* -@@ -1533,7 +1533,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp) - end: - return retval; - err_dec_count: -- port->count--; -+ atomic_inc(&port->count); - mutex_unlock(&port->mutex); - goto end; - } -diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c -index 593d40a..bdc61f3 100644 ---- a/drivers/tty/synclink.c -+++ b/drivers/tty/synclink.c -@@ -3095,7 +3095,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_close(%s) entry, count=%d\n", -- __FILE__,__LINE__, info->device_name, info->port.count); -+ __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count)); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; -@@ -3113,7 +3113,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp) - cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__, -- tty->driver->name, info->port.count); -+ tty->driver->name, atomic_read(&info->port.count)); - - } /* end of mgsl_close() */ - -@@ -3212,8 +3212,8 @@ static void mgsl_hangup(struct tty_struct *tty) - - mgsl_flush_buffer(tty); - shutdown(info); -- -- info->port.count = 0; -+ -+ atomic_set(&info->port.count, 0); - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - -@@ -3302,12 +3302,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready before block on %s count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - spin_lock_irqsave(&info->irq_spinlock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; -- port->count--; -+ atomic_dec(&port->count); - } - spin_unlock_irqrestore(&info->irq_spinlock, flags); - port->blocked_open++; -@@ -3336,7 +3336,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready blocking on %s count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - tty_unlock(); - schedule(); -@@ -3348,12 +3348,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, - - /* FIXME: Racy on hangup during close wait */ - if (extra_count) -- port->count++; -+ atomic_inc(&port->count); - port->blocked_open--; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready after blocking on %s count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - if (!retval) - port->flags |= ASYNC_NORMAL_ACTIVE; -@@ -3398,7 +3398,7 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_open(%s), old ref count = %d\n", -- __FILE__,__LINE__,tty->driver->name, info->port.count); -+ __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count)); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ -@@ -3417,10 +3417,10 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp) - spin_unlock_irqrestore(&info->netlock, flags); - goto cleanup; - } -- info->port.count++; -+ atomic_inc(&info->port.count); - spin_unlock_irqrestore(&info->netlock, flags); - -- if (info->port.count == 1) { -+ if (atomic_read(&info->port.count) == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) -@@ -3444,8 +3444,8 @@ cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ -- if(info->port.count) -- info->port.count--; -+ if (atomic_read(&info->port.count)) -+ atomic_dec(&info->port.count); - } - - return retval; -@@ -7653,7 +7653,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short new_crctype; - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - switch (encoding) -@@ -7748,7 +7748,7 @@ static int hdlcdev_open(struct net_device *dev) - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); -- if (info->port.count != 0 || info->netcount != 0) { -+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; -@@ -7834,7 +7834,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - if (cmd != SIOCWANDEV) -diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c -index aa1debf..9297a16 100644 ---- a/drivers/tty/synclink_gt.c -+++ b/drivers/tty/synclink_gt.c -@@ -671,7 +671,7 @@ static int open(struct tty_struct *tty, struct file *filp) - tty->driver_data = info; - info->port.tty = tty; - -- DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count)); -+ DBGINFO(("%s open, old ref count = %d\n", info->device_name, atomic_read(&info->port.count))); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ -@@ -692,10 +692,10 @@ static int open(struct tty_struct *tty, struct file *filp) - mutex_unlock(&info->port.mutex); - goto cleanup; - } -- info->port.count++; -+ atomic_inc(&info->port.count); - spin_unlock_irqrestore(&info->netlock, flags); - -- if (info->port.count == 1) { -+ if (atomic_read(&info->port.count) == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) { -@@ -716,8 +716,8 @@ cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ -- if(info->port.count) -- info->port.count--; -+ if(atomic_read(&info->port.count)) -+ atomic_dec(&info->port.count); - } - - DBGINFO(("%s open rc=%d\n", info->device_name, retval)); -@@ -730,7 +730,7 @@ static void close(struct tty_struct *tty, struct file *filp) - - if (sanity_check(info, tty->name, "close")) - return; -- DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count)); -+ DBGINFO(("%s close entry, count=%d\n", info->device_name, atomic_read(&info->port.count))); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; -@@ -747,7 +747,7 @@ static void close(struct tty_struct *tty, struct file *filp) - tty_port_close_end(&info->port, tty); - info->port.tty = NULL; - cleanup: -- DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count)); -+ DBGINFO(("%s close exit, count=%d\n", tty->driver->name, atomic_read(&info->port.count))); - } - - static void hangup(struct tty_struct *tty) -@@ -765,7 +765,7 @@ static void hangup(struct tty_struct *tty) - shutdown(info); - - spin_lock_irqsave(&info->port.lock, flags); -- info->port.count = 0; -+ atomic_set(&info->port.count, 0); - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - spin_unlock_irqrestore(&info->port.lock, flags); -@@ -1450,7 +1450,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short new_crctype; - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - DBGINFO(("%s hdlcdev_attach\n", info->device_name)); -@@ -1545,7 +1545,7 @@ static int hdlcdev_open(struct net_device *dev) - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); -- if (info->port.count != 0 || info->netcount != 0) { -+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) { - DBGINFO(("%s hdlc_open busy\n", dev->name)); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; -@@ -1630,7 +1630,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - DBGINFO(("%s hdlcdev_ioctl\n", dev->name)); - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - if (cmd != SIOCWANDEV) -@@ -2419,7 +2419,7 @@ static irqreturn_t slgt_interrupt(int dummy, void *dev_id) - if (port == NULL) - continue; - spin_lock(&port->lock); -- if ((port->port.count || port->netcount) && -+ if ((atomic_read(&port->port.count) || port->netcount) && - port->pending_bh && !port->bh_running && - !port->bh_requested) { - DBGISR(("%s bh queued\n", port->device_name)); -@@ -3308,7 +3308,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, - spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; -- port->count--; -+ atomic_dec(&port->count); - } - spin_unlock_irqrestore(&info->lock, flags); - port->blocked_open++; -@@ -3345,7 +3345,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, - remove_wait_queue(&port->open_wait, &wait); - - if (extra_count) -- port->count++; -+ atomic_inc(&port->count); - port->blocked_open--; - - if (!retval) -diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c -index a3dddc1..8905ab2 100644 ---- a/drivers/tty/synclinkmp.c -+++ b/drivers/tty/synclinkmp.c -@@ -742,7 +742,7 @@ static int open(struct tty_struct *tty, struct file *filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s open(), old ref count = %d\n", -- __FILE__,__LINE__,tty->driver->name, info->port.count); -+ __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count)); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ -@@ -761,10 +761,10 @@ static int open(struct tty_struct *tty, struct file *filp) - spin_unlock_irqrestore(&info->netlock, flags); - goto cleanup; - } -- info->port.count++; -+ atomic_inc(&info->port.count); - spin_unlock_irqrestore(&info->netlock, flags); - -- if (info->port.count == 1) { -+ if (atomic_read(&info->port.count) == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) -@@ -788,8 +788,8 @@ cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ -- if(info->port.count) -- info->port.count--; -+ if(atomic_read(&info->port.count)) -+ atomic_dec(&info->port.count); - } - - return retval; -@@ -807,7 +807,7 @@ static void close(struct tty_struct *tty, struct file *filp) - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s close() entry, count=%d\n", -- __FILE__,__LINE__, info->device_name, info->port.count); -+ __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count)); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; -@@ -826,7 +826,7 @@ static void close(struct tty_struct *tty, struct file *filp) - cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__, -- tty->driver->name, info->port.count); -+ tty->driver->name, atomic_read(&info->port.count)); - } - - /* Called by tty_hangup() when a hangup is signaled. -@@ -849,7 +849,7 @@ static void hangup(struct tty_struct *tty) - shutdown(info); - - spin_lock_irqsave(&info->port.lock, flags); -- info->port.count = 0; -+ atomic_set(&info->port.count, 0); - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - spin_unlock_irqrestore(&info->port.lock, flags); -@@ -1557,7 +1557,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short new_crctype; - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - switch (encoding) -@@ -1652,7 +1652,7 @@ static int hdlcdev_open(struct net_device *dev) - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); -- if (info->port.count != 0 || info->netcount != 0) { -+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; -@@ -1738,7 +1738,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - - /* return error if TTY interface open */ -- if (info->port.count) -+ if (atomic_read(&info->port.count)) - return -EBUSY; - - if (cmd != SIOCWANDEV) -@@ -2623,7 +2623,7 @@ static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id) - * do not request bottom half processing if the - * device is not open in a normal mode. - */ -- if ( port && (port->port.count || port->netcount) && -+ if ( port && (atomic_read(&port->port.count) || port->netcount) && - port->pending_bh && !port->bh_running && - !port->bh_requested ) { - if ( debug_level >= DEBUG_LEVEL_ISR ) -@@ -3321,12 +3321,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() before block, count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; -- port->count--; -+ atomic_dec(&port->count); - } - spin_unlock_irqrestore(&info->lock, flags); - port->blocked_open++; -@@ -3355,7 +3355,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - tty_unlock(); - schedule(); -@@ -3366,12 +3366,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, - remove_wait_queue(&port->open_wait, &wait); - - if (extra_count) -- port->count++; -+ atomic_inc(&port->count); - port->blocked_open--; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() after, count=%d\n", -- __FILE__,__LINE__, tty->driver->name, port->count ); -+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count)); - - if (!retval) - port->flags |= ASYNC_NORMAL_ACTIVE; -diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c -index 05728894..b9d44c6 100644 ---- a/drivers/tty/sysrq.c -+++ b/drivers/tty/sysrq.c -@@ -865,7 +865,7 @@ EXPORT_SYMBOL(unregister_sysrq_key); - static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) - { -- if (count) { -+ if (count && capable(CAP_SYS_ADMIN)) { - char c; - - if (get_user(c, buf)) -diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c -index b425c79..08a3f06 100644 ---- a/drivers/tty/tty_io.c -+++ b/drivers/tty/tty_io.c -@@ -3283,7 +3283,7 @@ EXPORT_SYMBOL_GPL(get_current_tty); - - void tty_default_fops(struct file_operations *fops) - { -- *fops = tty_fops; -+ memcpy((void *)fops, &tty_fops, sizeof(tty_fops)); - } - - /* -diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c -index 6f99c99..8947bc4 100644 ---- a/drivers/tty/tty_ldisc.c -+++ b/drivers/tty/tty_ldisc.c -@@ -56,7 +56,7 @@ static void put_ldisc(struct tty_ldisc *ld) - if (atomic_dec_and_lock(&ld->users, &tty_ldisc_lock)) { - struct tty_ldisc_ops *ldo = ld->ops; - -- ldo->refcount--; -+ atomic_dec(&ldo->refcount); - module_put(ldo->owner); - spin_unlock_irqrestore(&tty_ldisc_lock, flags); - -@@ -91,7 +91,7 @@ int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc) - spin_lock_irqsave(&tty_ldisc_lock, flags); - tty_ldiscs[disc] = new_ldisc; - new_ldisc->num = disc; -- new_ldisc->refcount = 0; -+ atomic_set(&new_ldisc->refcount, 0); - spin_unlock_irqrestore(&tty_ldisc_lock, flags); - - return ret; -@@ -119,7 +119,7 @@ int tty_unregister_ldisc(int disc) - return -EINVAL; - - spin_lock_irqsave(&tty_ldisc_lock, flags); -- if (tty_ldiscs[disc]->refcount) -+ if (atomic_read(&tty_ldiscs[disc]->refcount)) - ret = -EBUSY; - else - tty_ldiscs[disc] = NULL; -@@ -140,7 +140,7 @@ static struct tty_ldisc_ops *get_ldops(int disc) - if (ldops) { - ret = ERR_PTR(-EAGAIN); - if (try_module_get(ldops->owner)) { -- ldops->refcount++; -+ atomic_inc(&ldops->refcount); - ret = ldops; - } - } -@@ -153,7 +153,7 @@ static void put_ldops(struct tty_ldisc_ops *ldops) - unsigned long flags; - - spin_lock_irqsave(&tty_ldisc_lock, flags); -- ldops->refcount--; -+ atomic_dec(&ldops->refcount); - module_put(ldops->owner); - spin_unlock_irqrestore(&tty_ldisc_lock, flags); - } -diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c -index bf6e238..d401c04 100644 ---- a/drivers/tty/tty_port.c -+++ b/drivers/tty/tty_port.c -@@ -138,7 +138,7 @@ void tty_port_hangup(struct tty_port *port) - unsigned long flags; - - spin_lock_irqsave(&port->lock, flags); -- port->count = 0; -+ atomic_set(&port->count, 0); - port->flags &= ~ASYNC_NORMAL_ACTIVE; - if (port->tty) { - set_bit(TTY_IO_ERROR, &port->tty->flags); -@@ -264,7 +264,7 @@ int tty_port_block_til_ready(struct tty_port *port, - /* The port lock protects the port counts */ - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) -- port->count--; -+ atomic_dec(&port->count); - port->blocked_open++; - spin_unlock_irqrestore(&port->lock, flags); - -@@ -306,7 +306,7 @@ int tty_port_block_til_ready(struct tty_port *port, - we must not mess that up further */ - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) -- port->count++; -+ atomic_inc(&port->count); - port->blocked_open--; - if (retval == 0) - port->flags |= ASYNC_NORMAL_ACTIVE; -@@ -326,19 +326,19 @@ int tty_port_close_start(struct tty_port *port, - return 0; - } - -- if (tty->count == 1 && port->count != 1) { -+ if (tty->count == 1 && atomic_read(&port->count) != 1) { - printk(KERN_WARNING - "tty_port_close_start: tty->count = 1 port count = %d.\n", -- port->count); -- port->count = 1; -+ atomic_read(&port->count)); -+ atomic_set(&port->count, 1); - } -- if (--port->count < 0) { -+ if (atomic_dec_return(&port->count) < 0) { - printk(KERN_WARNING "tty_port_close_start: count = %d\n", -- port->count); -- port->count = 0; -+ atomic_read(&port->count)); -+ atomic_set(&port->count, 0); - } - -- if (port->count) { -+ if (atomic_read(&port->count)) { - spin_unlock_irqrestore(&port->lock, flags); - if (port->ops->drop) - port->ops->drop(port); -@@ -418,7 +418,7 @@ int tty_port_open(struct tty_port *port, struct tty_struct *tty, - { - spin_lock_irq(&port->lock); - if (!tty_hung_up_p(filp)) -- ++port->count; -+ atomic_inc(&port->count); - spin_unlock_irq(&port->lock); - tty_port_tty_set(port, tty); - -diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c -index 770a854..e5d3db3 100644 ---- a/drivers/tty/vt/keyboard.c -+++ b/drivers/tty/vt/keyboard.c -@@ -659,6 +659,16 @@ static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) - kbd->kbdmode == VC_OFF) && - value != KVAL(K_SAK)) - return; /* SAK is allowed even in raw mode */ -+ -+#if defined(CONFIG_GRKERNSEC_PROC) || defined(CONFIG_GRKERNSEC_PROC_MEMMAP) -+ { -+ void *func = fn_handler[value]; -+ if (func == fn_show_state || func == fn_show_ptregs || -+ func == fn_show_mem) -+ return; -+ } -+#endif -+ - fn_handler[value](vc); - } - -@@ -1805,9 +1815,6 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, - if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) - return -EFAULT; - -- if (!capable(CAP_SYS_TTY_CONFIG)) -- perm = 0; -- - switch (cmd) { - case KDGKBENT: - /* Ensure another thread doesn't free it under us */ -@@ -1822,6 +1829,9 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, - spin_unlock_irqrestore(&kbd_event_lock, flags); - return put_user(val, &user_kbe->kb_value); - case KDSKBENT: -+ if (!capable(CAP_SYS_TTY_CONFIG)) -+ perm = 0; -+ - if (!perm) - return -EPERM; - if (!i && v == K_NOSUCHMAP) { -@@ -1912,9 +1922,6 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) - int i, j, k; - int ret; - -- if (!capable(CAP_SYS_TTY_CONFIG)) -- perm = 0; -- - kbs = kmalloc(sizeof(*kbs), GFP_KERNEL); - if (!kbs) { - ret = -ENOMEM; -@@ -1948,6 +1955,9 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) - kfree(kbs); - return ((p && *p) ? -EOVERFLOW : 0); - case KDSKBSENT: -+ if (!capable(CAP_SYS_TTY_CONFIG)) -+ perm = 0; -+ - if (!perm) { - ret = -EPERM; - goto reterr; -diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c -index a783d53..cb30d94 100644 ---- a/drivers/uio/uio.c -+++ b/drivers/uio/uio.c -@@ -25,6 +25,7 @@ - #include - #include - #include -+#include - - #define UIO_MAX_DEVICES (1U << MINORBITS) - -@@ -32,10 +33,10 @@ struct uio_device { - struct module *owner; - struct device *dev; - int minor; -- atomic_t event; -+ atomic_unchecked_t event; - struct fasync_struct *async_queue; - wait_queue_head_t wait; -- int vma_count; -+ local_t vma_count; - struct uio_info *info; - struct kobject *map_dir; - struct kobject *portio_dir; -@@ -242,7 +243,7 @@ static ssize_t show_event(struct device *dev, - struct device_attribute *attr, char *buf) - { - struct uio_device *idev = dev_get_drvdata(dev); -- return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event)); -+ return sprintf(buf, "%u\n", (unsigned int)atomic_read_unchecked(&idev->event)); - } - - static struct device_attribute uio_class_attributes[] = { -@@ -408,7 +409,7 @@ void uio_event_notify(struct uio_info *info) - { - struct uio_device *idev = info->uio_dev; - -- atomic_inc(&idev->event); -+ atomic_inc_unchecked(&idev->event); - wake_up_interruptible(&idev->wait); - kill_fasync(&idev->async_queue, SIGIO, POLL_IN); - } -@@ -461,7 +462,7 @@ static int uio_open(struct inode *inode, struct file *filep) - } - - listener->dev = idev; -- listener->event_count = atomic_read(&idev->event); -+ listener->event_count = atomic_read_unchecked(&idev->event); - filep->private_data = listener; - - if (idev->info->open) { -@@ -512,7 +513,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait) - return -EIO; - - poll_wait(filep, &idev->wait, wait); -- if (listener->event_count != atomic_read(&idev->event)) -+ if (listener->event_count != atomic_read_unchecked(&idev->event)) - return POLLIN | POLLRDNORM; - return 0; - } -@@ -537,7 +538,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf, - do { - set_current_state(TASK_INTERRUPTIBLE); - -- event_count = atomic_read(&idev->event); -+ event_count = atomic_read_unchecked(&idev->event); - if (event_count != listener->event_count) { - if (copy_to_user(buf, &event_count, count)) - retval = -EFAULT; -@@ -606,13 +607,13 @@ static int uio_find_mem_index(struct vm_area_struct *vma) - static void uio_vma_open(struct vm_area_struct *vma) - { - struct uio_device *idev = vma->vm_private_data; -- idev->vma_count++; -+ local_inc(&idev->vma_count); - } - - static void uio_vma_close(struct vm_area_struct *vma) - { - struct uio_device *idev = vma->vm_private_data; -- idev->vma_count--; -+ local_dec(&idev->vma_count); - } - - static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) -@@ -821,7 +822,7 @@ int __uio_register_device(struct module *owner, - idev->owner = owner; - idev->info = info; - init_waitqueue_head(&idev->wait); -- atomic_set(&idev->event, 0); -+ atomic_set_unchecked(&idev->event, 0); - - ret = uio_get_minor(idev); - if (ret) -diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c -index b7eb86a..36d28af 100644 ---- a/drivers/usb/atm/cxacru.c -+++ b/drivers/usb/atm/cxacru.c -@@ -473,7 +473,7 @@ static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, - ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); - if (ret < 2) - return -EINVAL; -- if (index < 0 || index > 0x7f) -+ if (index > 0x7f) - return -EINVAL; - pos += tmp; - -diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c -index ee62b35..b663594 100644 ---- a/drivers/usb/atm/usbatm.c -+++ b/drivers/usb/atm/usbatm.c -@@ -333,7 +333,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char - if (printk_ratelimit()) - atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n", - __func__, vpi, vci); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - return; - } - -@@ -361,7 +361,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char - if (length > ATM_MAX_AAL5_PDU) { - atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n", - __func__, length, vcc); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto out; - } - -@@ -370,14 +370,14 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char - if (sarb->len < pdu_length) { - atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n", - __func__, pdu_length, sarb->len, vcc); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto out; - } - - if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) { - atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n", - __func__, vcc); -- atomic_inc(&vcc->stats->rx_err); -+ atomic_inc_unchecked(&vcc->stats->rx_err); - goto out; - } - -@@ -387,7 +387,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char - if (printk_ratelimit()) - atm_err(instance, "%s: no memory for skb (length: %u)!\n", - __func__, length); -- atomic_inc(&vcc->stats->rx_drop); -+ atomic_inc_unchecked(&vcc->stats->rx_drop); - goto out; - } - -@@ -412,7 +412,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char - - vcc->push(vcc, skb); - -- atomic_inc(&vcc->stats->rx); -+ atomic_inc_unchecked(&vcc->stats->rx); - out: - skb_trim(sarb, 0); - } -@@ -615,7 +615,7 @@ static void usbatm_tx_process(unsigned long data) - struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc; - - usbatm_pop(vcc, skb); -- atomic_inc(&vcc->stats->tx); -+ atomic_inc_unchecked(&vcc->stats->tx); - - skb = skb_dequeue(&instance->sndqueue); - } -@@ -770,11 +770,11 @@ static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *pag - if (!left--) - return sprintf(page, - "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n", -- atomic_read(&atm_dev->stats.aal5.tx), -- atomic_read(&atm_dev->stats.aal5.tx_err), -- atomic_read(&atm_dev->stats.aal5.rx), -- atomic_read(&atm_dev->stats.aal5.rx_err), -- atomic_read(&atm_dev->stats.aal5.rx_drop)); -+ atomic_read_unchecked(&atm_dev->stats.aal5.tx), -+ atomic_read_unchecked(&atm_dev->stats.aal5.tx_err), -+ atomic_read_unchecked(&atm_dev->stats.aal5.rx), -+ atomic_read_unchecked(&atm_dev->stats.aal5.rx_err), -+ atomic_read_unchecked(&atm_dev->stats.aal5.rx_drop)); - - if (!left--) { - if (instance->disconnected) -diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c -index 3440812..2a4ef1f 100644 ---- a/drivers/usb/core/devices.c -+++ b/drivers/usb/core/devices.c -@@ -126,7 +126,7 @@ static const char format_endpt[] = - * time it gets called. - */ - static struct device_connect_event { -- atomic_t count; -+ atomic_unchecked_t count; - wait_queue_head_t wait; - } device_event = { - .count = ATOMIC_INIT(1), -@@ -164,7 +164,7 @@ static const struct class_info clas_info[] = { - - void usbfs_conn_disc_event(void) - { -- atomic_add(2, &device_event.count); -+ atomic_add_unchecked(2, &device_event.count); - wake_up(&device_event.wait); - } - -@@ -648,7 +648,7 @@ static unsigned int usb_device_poll(struct file *file, - - poll_wait(file, &device_event.wait, wait); - -- event_count = atomic_read(&device_event.count); -+ event_count = atomic_read_unchecked(&device_event.count); - if (file->f_version != event_count) { - file->f_version = event_count; - return POLLIN | POLLRDNORM; -diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c -index 75ba209..08bf89e 100644 ---- a/drivers/usb/core/hcd.c -+++ b/drivers/usb/core/hcd.c -@@ -1478,7 +1478,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags) - */ - usb_get_urb(urb); - atomic_inc(&urb->use_count); -- atomic_inc(&urb->dev->urbnum); -+ atomic_inc_unchecked(&urb->dev->urbnum); - usbmon_urb_submit(&hcd->self, urb); - - /* NOTE requirements on root-hub callers (usbfs and the hub -@@ -1505,7 +1505,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags) - urb->hcpriv = NULL; - INIT_LIST_HEAD(&urb->urb_list); - atomic_dec(&urb->use_count); -- atomic_dec(&urb->dev->urbnum); -+ atomic_dec_unchecked(&urb->dev->urbnum); - if (atomic_read(&urb->reject)) - wake_up(&usb_kill_urb_queue); - usb_put_urb(urb); -diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c -index 682e825..06d4f69 100644 ---- a/drivers/usb/core/sysfs.c -+++ b/drivers/usb/core/sysfs.c -@@ -226,7 +226,7 @@ show_urbnum(struct device *dev, struct device_attribute *attr, char *buf) - struct usb_device *udev; - - udev = to_usb_device(dev); -- return sprintf(buf, "%d\n", atomic_read(&udev->urbnum)); -+ return sprintf(buf, "%d\n", atomic_read_unchecked(&udev->urbnum)); - } - static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL); - -diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c -index cd8fb44..17fbe0c 100644 ---- a/drivers/usb/core/usb.c -+++ b/drivers/usb/core/usb.c -@@ -397,7 +397,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, - set_dev_node(&dev->dev, dev_to_node(bus->controller)); - dev->state = USB_STATE_ATTACHED; - dev->lpm_disable_count = 1; -- atomic_set(&dev->urbnum, 0); -+ atomic_set_unchecked(&dev->urbnum, 0); - - INIT_LIST_HEAD(&dev->ep0.urb_list); - dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE; -diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c -index 89dcf15..481800b 100644 ---- a/drivers/usb/early/ehci-dbgp.c -+++ b/drivers/usb/early/ehci-dbgp.c -@@ -97,7 +97,8 @@ static inline u32 dbgp_len_update(u32 x, u32 len) - - #ifdef CONFIG_KGDB - static struct kgdb_io kgdbdbgp_io_ops; --#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops) -+static struct kgdb_io kgdbdbgp_io_ops_console; -+#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops || dbg_io_ops == &kgdbdbgp_io_ops_console) - #else - #define dbgp_kgdb_mode (0) - #endif -@@ -1035,6 +1036,13 @@ static struct kgdb_io kgdbdbgp_io_ops = { - .write_char = kgdbdbgp_write_char, - }; - -+static struct kgdb_io kgdbdbgp_io_ops_console = { -+ .name = "kgdbdbgp", -+ .read_char = kgdbdbgp_read_char, -+ .write_char = kgdbdbgp_write_char, -+ .is_console = 1 -+}; -+ - static int kgdbdbgp_wait_time; - - static int __init kgdbdbgp_parse_config(char *str) -@@ -1050,8 +1058,10 @@ static int __init kgdbdbgp_parse_config(char *str) - ptr++; - kgdbdbgp_wait_time = simple_strtoul(ptr, &ptr, 10); - } -- kgdb_register_io_module(&kgdbdbgp_io_ops); -- kgdbdbgp_io_ops.is_console = early_dbgp_console.index != -1; -+ if (early_dbgp_console.index != -1) -+ kgdb_register_io_module(&kgdbdbgp_io_ops_console); -+ else -+ kgdb_register_io_module(&kgdbdbgp_io_ops); - - return 0; - } -diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c -index da6d479..80ed10b 100644 ---- a/drivers/usb/gadget/u_serial.c -+++ b/drivers/usb/gadget/u_serial.c -@@ -735,9 +735,9 @@ static int gs_open(struct tty_struct *tty, struct file *file) - spin_lock_irq(&port->port_lock); - - /* already open? Great. */ -- if (port->port.count) { -+ if (atomic_read(&port->port.count)) { - status = 0; -- port->port.count++; -+ atomic_inc(&port->port.count); - - /* currently opening/closing? wait ... */ - } else if (port->openclose) { -@@ -796,7 +796,7 @@ static int gs_open(struct tty_struct *tty, struct file *file) - tty->driver_data = port; - port->port.tty = tty; - -- port->port.count = 1; -+ atomic_set(&port->port.count, 1); - port->openclose = false; - - /* if connected, start the I/O stream */ -@@ -838,11 +838,11 @@ static void gs_close(struct tty_struct *tty, struct file *file) - - spin_lock_irq(&port->port_lock); - -- if (port->port.count != 1) { -- if (port->port.count == 0) -+ if (atomic_read(&port->port.count) != 1) { -+ if (atomic_read(&port->port.count) == 0) - WARN_ON(1); - else -- --port->port.count; -+ atomic_dec(&port->port.count); - goto exit; - } - -@@ -852,7 +852,7 @@ static void gs_close(struct tty_struct *tty, struct file *file) - * and sleep if necessary - */ - port->openclose = true; -- port->port.count = 0; -+ atomic_set(&port->port.count, 0); - - gser = port->port_usb; - if (gser && gser->disconnect) -@@ -1156,7 +1156,7 @@ static int gs_closed(struct gs_port *port) - int cond; - - spin_lock_irq(&port->port_lock); -- cond = (port->port.count == 0) && !port->openclose; -+ cond = (atomic_read(&port->port.count) == 0) && !port->openclose; - spin_unlock_irq(&port->port_lock); - return cond; - } -@@ -1269,7 +1269,7 @@ int gserial_connect(struct gserial *gser, u8 port_num) - /* if it's already open, start I/O ... and notify the serial - * protocol about open/close status (connect/disconnect). - */ -- if (port->port.count) { -+ if (atomic_read(&port->port.count)) { - pr_debug("gserial_connect: start ttyGS%d\n", port->port_num); - gs_start_io(port); - if (gser->connect) -@@ -1316,7 +1316,7 @@ void gserial_disconnect(struct gserial *gser) - - port->port_usb = NULL; - gser->ioport = NULL; -- if (port->port.count > 0 || port->openclose) { -+ if (atomic_read(&port->port.count) > 0 || port->openclose) { - wake_up_interruptible(&port->drain_wait); - if (port->port.tty) - tty_hangup(port->port.tty); -@@ -1332,7 +1332,7 @@ void gserial_disconnect(struct gserial *gser) - - /* finally, free any unused/unusable I/O buffers */ - spin_lock_irqsave(&port->port_lock, flags); -- if (port->port.count == 0 && !port->openclose) -+ if (atomic_read(&port->port.count) == 0 && !port->openclose) - gs_buf_free(&port->port_write_buf); - gs_free_requests(gser->out, &port->read_pool, NULL); - gs_free_requests(gser->out, &port->read_queue, NULL); -diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c -index b9cca6d..75c75df 100644 ---- a/drivers/usb/serial/console.c -+++ b/drivers/usb/serial/console.c -@@ -127,7 +127,7 @@ static int usb_console_setup(struct console *co, char *options) - - info->port = port; - -- ++port->port.count; -+ atomic_inc(&port->port.count); - if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) { - if (serial->type->set_termios) { - /* -@@ -177,7 +177,7 @@ static int usb_console_setup(struct console *co, char *options) - } - /* Now that any required fake tty operations are completed restore - * the tty port count */ -- --port->port.count; -+ atomic_dec(&port->port.count); - /* The console is special in terms of closing the device so - * indicate this port is now acting as a system console. */ - port->port.console = 1; -@@ -190,7 +190,7 @@ static int usb_console_setup(struct console *co, char *options) - free_tty: - kfree(tty); - reset_open_count: -- port->port.count = 0; -+ atomic_set(&port->port.count, 0); - usb_autopm_put_interface(serial->interface); - error_get_interface: - usb_serial_put(serial); -diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h -index d6bea3e..60b250e 100644 ---- a/drivers/usb/wusbcore/wa-hc.h -+++ b/drivers/usb/wusbcore/wa-hc.h -@@ -192,7 +192,7 @@ struct wahc { - struct list_head xfer_delayed_list; - spinlock_t xfer_list_lock; - struct work_struct xfer_work; -- atomic_t xfer_id_count; -+ atomic_unchecked_t xfer_id_count; - }; - - -@@ -246,7 +246,7 @@ static inline void wa_init(struct wahc *wa) - INIT_LIST_HEAD(&wa->xfer_delayed_list); - spin_lock_init(&wa->xfer_list_lock); - INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run); -- atomic_set(&wa->xfer_id_count, 1); -+ atomic_set_unchecked(&wa->xfer_id_count, 1); - } - - /** -diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c -index 57c01ab..8a05959 100644 ---- a/drivers/usb/wusbcore/wa-xfer.c -+++ b/drivers/usb/wusbcore/wa-xfer.c -@@ -296,7 +296,7 @@ out: - */ - static void wa_xfer_id_init(struct wa_xfer *xfer) - { -- xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count); -+ xfer->id = atomic_add_return_unchecked(1, &xfer->wa->xfer_id_count); - } - - /* -diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c -index ef82a0d..78a026b 100644 ---- a/drivers/vhost/vhost.c -+++ b/drivers/vhost/vhost.c -@@ -634,7 +634,7 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) - return 0; - } - --static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) -+static long vhost_set_vring(struct vhost_dev *d, unsigned int ioctl, void __user *argp) - { - struct file *eventfp, *filep = NULL, - *pollstart = NULL, *pollstop = NULL; -@@ -1076,7 +1076,7 @@ static int translate_desc(struct vhost_dev *dev, u64 addr, u32 len, - } - _iov = iov + ret; - size = reg->memory_size - addr + reg->guest_phys_addr; -- _iov->iov_len = min((u64)len, size); -+ _iov->iov_len = min((u64)len - s, size); - _iov->iov_base = (void __user *)(unsigned long) - (reg->userspace_addr + addr - reg->guest_phys_addr); - s += size; -diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c -index 747442d..7c0c434 100644 ---- a/drivers/video/aty/aty128fb.c -+++ b/drivers/video/aty/aty128fb.c -@@ -149,7 +149,7 @@ enum { - }; - - /* Must match above enum */ --static const char *r128_family[] __devinitdata = { -+static const char *r128_family[] __devinitconst = { - "AGP", - "PCI", - "PRO AGP", -diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c -index 5c3960d..15cf8fc 100644 ---- a/drivers/video/fbcmap.c -+++ b/drivers/video/fbcmap.c -@@ -285,8 +285,7 @@ int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info) - rc = -ENODEV; - goto out; - } -- if (cmap->start < 0 || (!info->fbops->fb_setcolreg && -- !info->fbops->fb_setcmap)) { -+ if (!info->fbops->fb_setcolreg && !info->fbops->fb_setcmap) { - rc = -EINVAL; - goto out1; - } -diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c -index afa804f..293a360 100644 ---- a/drivers/video/fbmem.c -+++ b/drivers/video/fbmem.c -@@ -428,7 +428,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, - image->dx += image->width + 8; - } - } else if (rotate == FB_ROTATE_UD) { -- for (x = 0; x < num && image->dx >= 0; x++) { -+ for (x = 0; x < num && (__s32)image->dx >= 0; x++) { - info->fbops->fb_imageblit(info, image); - image->dx -= image->width + 8; - } -@@ -440,7 +440,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, - image->dy += image->height + 8; - } - } else if (rotate == FB_ROTATE_CCW) { -- for (x = 0; x < num && image->dy >= 0; x++) { -+ for (x = 0; x < num && (__s32)image->dy >= 0; x++) { - info->fbops->fb_imageblit(info, image); - image->dy -= image->height + 8; - } -@@ -1166,7 +1166,7 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, - return -EFAULT; - if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) - return -EINVAL; -- if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) -+ if (con2fb.framebuffer >= FB_MAX) - return -EINVAL; - if (!registered_fb[con2fb.framebuffer]) - request_module("fb%d", con2fb.framebuffer); -diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c -index 5a5d092..265c5ed 100644 ---- a/drivers/video/geode/gx1fb_core.c -+++ b/drivers/video/geode/gx1fb_core.c -@@ -29,7 +29,7 @@ static int crt_option = 1; - static char panel_option[32] = ""; - - /* Modes relevant to the GX1 (taken from modedb.c) */ --static const struct fb_videomode __devinitdata gx1_modedb[] = { -+static const struct fb_videomode __devinitconst gx1_modedb[] = { - /* 640x480-60 VESA */ - { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, - 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, -diff --git a/drivers/video/gxt4500.c b/drivers/video/gxt4500.c -index 0fad23f..0e9afa4 100644 ---- a/drivers/video/gxt4500.c -+++ b/drivers/video/gxt4500.c -@@ -156,7 +156,7 @@ struct gxt4500_par { - static char *mode_option; - - /* default mode: 1280x1024 @ 60 Hz, 8 bpp */ --static const struct fb_videomode defaultmode __devinitdata = { -+static const struct fb_videomode defaultmode __devinitconst = { - .refresh = 60, - .xres = 1280, - .yres = 1024, -@@ -581,7 +581,7 @@ static int gxt4500_blank(int blank, struct fb_info *info) - return 0; - } - --static const struct fb_fix_screeninfo gxt4500_fix __devinitdata = { -+static const struct fb_fix_screeninfo gxt4500_fix __devinitconst = { - .id = "IBM GXT4500P", - .type = FB_TYPE_PACKED_PIXELS, - .visual = FB_VISUAL_PSEUDOCOLOR, -diff --git a/drivers/video/i810/i810_accel.c b/drivers/video/i810/i810_accel.c -index 7672d2e..b56437f 100644 ---- a/drivers/video/i810/i810_accel.c -+++ b/drivers/video/i810/i810_accel.c -@@ -73,6 +73,7 @@ static inline int wait_for_space(struct fb_info *info, u32 space) - } - } - printk("ringbuffer lockup!!!\n"); -+ printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space); - i810_report_error(mmio); - par->dev_flags |= LOCKUP; - info->pixmap.scan_align = 1; -diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c -index b83f361..2b05a91 100644 ---- a/drivers/video/i810/i810_main.c -+++ b/drivers/video/i810/i810_main.c -@@ -97,7 +97,7 @@ static int i810fb_blank (int blank_mode, struct fb_info *info); - static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par); - - /* PCI */ --static const char *i810_pci_list[] __devinitdata = { -+static const char *i810_pci_list[] __devinitconst = { - "Intel(R) 810 Framebuffer Device" , - "Intel(R) 810-DC100 Framebuffer Device" , - "Intel(R) 810E Framebuffer Device" , -diff --git a/drivers/video/jz4740_fb.c b/drivers/video/jz4740_fb.c -index de36693..3c63fc2 100644 ---- a/drivers/video/jz4740_fb.c -+++ b/drivers/video/jz4740_fb.c -@@ -136,7 +136,7 @@ struct jzfb { - uint32_t pseudo_palette[16]; - }; - --static const struct fb_fix_screeninfo jzfb_fix __devinitdata = { -+static const struct fb_fix_screeninfo jzfb_fix __devinitconst = { - .id = "JZ4740 FB", - .type = FB_TYPE_PACKED_PIXELS, - .visual = FB_VISUAL_TRUECOLOR, -diff --git a/drivers/video/logo/logo_linux_clut224.ppm b/drivers/video/logo/logo_linux_clut224.ppm -index 3c14e43..eafa544 100644 ---- a/drivers/video/logo/logo_linux_clut224.ppm -+++ 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4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 5 5 5 4 3 3 5 5 5 6 6 6 4 3 3 -+4 3 3 6 6 6 6 6 6 4 3 3 6 6 6 4 3 3 -+5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 6 6 6 -+5 5 5 4 3 3 4 3 3 4 3 3 5 5 5 5 5 5 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 -+5 5 5 4 3 3 5 5 5 5 5 5 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -+4 4 4 4 4 4 -diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c -index 38fcfff..0072dcd 100644 ---- a/drivers/video/udlfb.c -+++ b/drivers/video/udlfb.c -@@ -620,11 +620,11 @@ int dlfb_handle_damage(struct dlfb_data *dev, int x, int y, - dlfb_urb_completion(urb); - - error: -- atomic_add(bytes_sent, &dev->bytes_sent); -- atomic_add(bytes_identical, &dev->bytes_identical); -- atomic_add(width*height*2, &dev->bytes_rendered); -+ atomic_add_unchecked(bytes_sent, &dev->bytes_sent); -+ atomic_add_unchecked(bytes_identical, &dev->bytes_identical); -+ atomic_add_unchecked(width*height*2, &dev->bytes_rendered); - end_cycles = get_cycles(); -- atomic_add(((unsigned int) ((end_cycles - start_cycles) -+ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles) - >> 10)), /* Kcycles */ - &dev->cpu_kcycles_used); - -@@ -745,11 +745,11 @@ static void dlfb_dpy_deferred_io(struct fb_info *info, - dlfb_urb_completion(urb); - - error: -- atomic_add(bytes_sent, &dev->bytes_sent); -- atomic_add(bytes_identical, &dev->bytes_identical); -- atomic_add(bytes_rendered, &dev->bytes_rendered); -+ atomic_add_unchecked(bytes_sent, &dev->bytes_sent); -+ atomic_add_unchecked(bytes_identical, &dev->bytes_identical); -+ atomic_add_unchecked(bytes_rendered, &dev->bytes_rendered); - end_cycles = get_cycles(); -- atomic_add(((unsigned int) ((end_cycles - start_cycles) -+ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles) - >> 10)), /* Kcycles */ - &dev->cpu_kcycles_used); - } -@@ -1373,7 +1373,7 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev, - struct fb_info *fb_info = dev_get_drvdata(fbdev); - struct dlfb_data *dev = fb_info->par; - return snprintf(buf, PAGE_SIZE, "%u\n", -- atomic_read(&dev->bytes_rendered)); -+ atomic_read_unchecked(&dev->bytes_rendered)); - } - - static ssize_t metrics_bytes_identical_show(struct device *fbdev, -@@ -1381,7 +1381,7 @@ static ssize_t metrics_bytes_identical_show(struct device *fbdev, - struct fb_info *fb_info = dev_get_drvdata(fbdev); - struct dlfb_data *dev = fb_info->par; - return snprintf(buf, PAGE_SIZE, "%u\n", -- atomic_read(&dev->bytes_identical)); -+ atomic_read_unchecked(&dev->bytes_identical)); - } - - static ssize_t metrics_bytes_sent_show(struct device *fbdev, -@@ -1389,7 +1389,7 @@ static ssize_t metrics_bytes_sent_show(struct device *fbdev, - struct fb_info *fb_info = dev_get_drvdata(fbdev); - struct dlfb_data *dev = fb_info->par; - return snprintf(buf, PAGE_SIZE, "%u\n", -- atomic_read(&dev->bytes_sent)); -+ atomic_read_unchecked(&dev->bytes_sent)); - } - - static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev, -@@ -1397,7 +1397,7 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev, - struct fb_info *fb_info = dev_get_drvdata(fbdev); - struct dlfb_data *dev = fb_info->par; - return snprintf(buf, PAGE_SIZE, "%u\n", -- atomic_read(&dev->cpu_kcycles_used)); -+ atomic_read_unchecked(&dev->cpu_kcycles_used)); - } - - static ssize_t edid_show( -@@ -1457,10 +1457,10 @@ static ssize_t metrics_reset_store(struct device *fbdev, - struct fb_info *fb_info = dev_get_drvdata(fbdev); - struct dlfb_data *dev = fb_info->par; - -- atomic_set(&dev->bytes_rendered, 0); -- atomic_set(&dev->bytes_identical, 0); -- atomic_set(&dev->bytes_sent, 0); -- atomic_set(&dev->cpu_kcycles_used, 0); -+ atomic_set_unchecked(&dev->bytes_rendered, 0); -+ atomic_set_unchecked(&dev->bytes_identical, 0); -+ atomic_set_unchecked(&dev->bytes_sent, 0); -+ atomic_set_unchecked(&dev->cpu_kcycles_used, 0); - - return count; - } -diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c -index b0e2a42..e2df3ad 100644 ---- a/drivers/video/uvesafb.c -+++ b/drivers/video/uvesafb.c -@@ -19,6 +19,7 @@ - #include - #include - #include -+#include - #include