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authorNatanael Copa <ncopa@alpinelinux.org>2015-05-22 07:34:48 +0000
committerNatanael Copa <ncopa@alpinelinux.org>2015-05-22 07:34:48 +0000
commit69138e0738469f0d81be2aa0664e27c269336dba (patch)
tree69bbf002bcdefa87e331d3151e1f955b3a8bb531 /main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch
parent88fe488df904b86cf5508442f239675eed35e806 (diff)
downloadaports-69138e0738469f0d81be2aa0664e27c269336dba.tar.bz2
aports-69138e0738469f0d81be2aa0664e27c269336dba.tar.xz
main/linux-vanilla: upgrade to 3.18.14
Diffstat (limited to 'main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch')
-rw-r--r--main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch71
1 files changed, 0 insertions, 71 deletions
diff --git a/main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch b/main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch
deleted file mode 100644
index 71e4dce991..0000000000
--- a/main/linux-vanilla/fs-binfmt_elf-fix-memory-map-for-PIE-applications.patch
+++ /dev/null
@@ -1,71 +0,0 @@
-From 9bfe85ecddfd1a11376e7b4916f9b000aabd5da6 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
-Date: Tue, 1 Oct 2013 13:46:04 +0300
-Subject: [PATCH] fs/binfmt_elf: fix memory map for PIE applications
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-arch/x86/include/asm/elf.h comment says:
-"
-ELF_ET_DYN_BASE is the location that an ET_DYN program is loaded
-if exec'ed. Typical use of this is to invoke "./ld.so someprog"
-to test out a new version of 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.
-"
-
-In case we have main application linked as PIE, this will cause
-problems as the main program itself will go the memory location
-that allows very little heap.
-
-This fixes the loader to detect PIE application by checking if
-elf_interpreter is requested, and loads them to beginning of the
-address space instead of the specially crafted place for elf
-interpreter.
-
-Signed-off-by: Timo Teräs <timo.teras@iki.fi>
----
- fs/binfmt_elf.c | 17 +++++++++++------
- 1 file changed, 11 insertions(+), 6 deletions(-)
-
-diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
-index 100edcc..1161e5d 100644
---- a/fs/binfmt_elf.c
-+++ b/fs/binfmt_elf.c
-@@ -802,6 +802,10 @@ static int load_elf_binary(struct linux_binprm *bprm)
- * default mmap base, as well as whatever program they
- * might try to exec. This is because the brk will
- * follow the loader, and is not movable. */
-+ if (elf_interpreter)
-+ load_bias = 0x00400000UL;
-+ else
-+ load_bias = ELF_ET_DYN_BASE;
- #ifdef CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE
- /* Memory randomization might have been switched off
- * in runtime via sysctl or explicit setting of
-@@ -810,13 +814,14 @@ static int load_elf_binary(struct linux_binprm *bprm)
- * load_bias value in order to establish proper
- * non-randomized mappings.
- */
-- if (current->flags & PF_RANDOMIZE)
-- load_bias = 0;
-- else
-- load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
--#else
-- load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
-+ if (current->flags & PF_RANDOMIZE) {
-+ if (elf_interpreter)
-+ load_bias += (get_random_int() & STACK_RND_MASK) << PAGE_SHIFT;
-+ else
-+ load_bias = 0;
-+ }
- #endif
-+ load_bias = ELF_PAGESTART(vaddr + load_bias);
- }
-
- error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt,
---
-1.8.4
-
-