main/*-grsec: updated grsec kernel to 200908281917

3 files changed, 131 insertions, 273 deletions

diff --git a/main/linux-grsec/APKBUILD b/main/linux-grsec/APKBUILD
index caac111b..9543b346 100644
--- a/main/linux-grsec/APKBUILD
+++ b/main/linux-grsec/APKBUILD
@@ -4,7 +4,7 @@ _flavor=grsec
 pkgname=linux-${_flavor}
 pkgver=2.6.30.5
 _kernver=2.6.30
-pkgrel=0
+pkgrel=1
 pkgdesc="Linux kernel with grsecurity"
 url=http://grsecurity.net
 depends="mkinitfs"
@@ -13,8 +13,7 @@ _config=${config:-kernelconfig}
 install="$pkgname.post-install $pkgname.post-upgrade"
 source="ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-$_kernver.tar.bz2
 	ftp://ftp.kernel.org/pub/linux/kernel/v2.6/patch-$pkgver.bz2
-	grsecurity-2.1.14-2.6.30.5-200908261614.patch
-	linux-nbma-mroute-v4-2.6.30.diff
+	grsecurity-2.1.14-2.6.30.5-200908281917.patch
 	net-next-2.6.git-5ef12d98a19254ee5dc851bd83e214b43ec1f725.patch
 	$_config
 	"
@@ -30,6 +29,7 @@ _prepare() {
 	fi
 
 	for i in ../*.diff ../*.patch; do
+		[ -f $i ] || continue
 		msg "Applying $i..."
 		patch -p1 -N < $i || return 1
 	done
@@ -112,7 +112,6 @@ dev() {
 
 md5sums="7a80058a6382e5108cdb5554d1609615  linux-2.6.30.tar.bz2
 47841c7ff5c81a7b349a79f2fa8e9138  patch-2.6.30.5.bz2
-a725c0779f365787127c71810877586d  grsecurity-2.1.14-2.6.30.5-200908261614.patch
-7420c0b1095335990313656b114e1379  linux-nbma-mroute-v4-2.6.30.diff
+dee5a6292fb12018eb3bd3d014f89407  grsecurity-2.1.14-2.6.30.5-200908281917.patch
 ca05fd252783b82e01610e775cf56498  net-next-2.6.git-5ef12d98a19254ee5dc851bd83e214b43ec1f725.patch
 ede34b2613f54cf1eae8f37a61d0e085  kernelconfig"
diff --git a/main/linux-grsec/grsecurity-2.1.14-2.6.30.5-200908261614.patch b/main/linux-grsec/grsecurity-2.1.14-2.6.30.5-200908281917.patch
index f653790e..cc232fbe 100644
--- a/main/linux-grsec/grsecurity-2.1.14-2.6.30.5-200908261614.patch
+++ b/main/linux-grsec/grsecurity-2.1.14-2.6.30.5-200908281917.patch
@@ -2937,7 +2937,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/Makefile linux-2.6.30.5/arch/sparc/Makefile
  
 diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_32.c linux-2.6.30.5/arch/sparc/mm/fault_32.c
 --- linux-2.6.30.5/arch/sparc/mm/fault_32.c	2009-07-24 17:47:51.000000000 -0400
-+++ linux-2.6.30.5/arch/sparc/mm/fault_32.c	2009-07-30 09:48:09.913853340 -0400
++++ linux-2.6.30.5/arch/sparc/mm/fault_32.c	2009-08-27 21:11:25.299108429 -0400
 @@ -21,6 +21,9 @@
  #include <linux/interrupt.h>
  #include <linux/module.h>
@@ -2948,7 +2948,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_32.c linux-2.6.30.5/arch/sparc/mm/
  
  #include <asm/system.h>
  #include <asm/page.h>
-@@ -167,6 +170,249 @@ static unsigned long compute_si_addr(str
+@@ -167,6 +170,264 @@ static unsigned long compute_si_addr(str
  	return safe_compute_effective_address(regs, insn);
  }
  
@@ -3150,6 +3150,21 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_32.c linux-2.6.30.5/arch/sparc/mm/
 +				regs->npc = addr+4;
 +				return 3;
 +			}
++
++			/* PaX: newer glibc/binutils generate sethi/jmp instead of save/call */
++			if ((save & 0xFFC00000U) == 0x05000000U &&
++			    (call & 0xFFFFE000U) == 0x85C0A000U &&
++			    nop == 0x01000000U)
++			{
++				unsigned long addr;
++
++				addr = (save & 0x003FFFFFU) << 10;
++				regs->u_regs[UREG_G2] = addr;
++				addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
++				regs->pc = addr;
++				regs->npc = addr+4;
++				return 3;
++			}
 +		}
 +	} while (0);
 +
@@ -3198,7 +3213,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_32.c linux-2.6.30.5/arch/sparc/mm/
  asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
  			       unsigned long address)
  {
-@@ -231,6 +477,24 @@ good_area:
+@@ -231,6 +492,24 @@ good_area:
  		if(!(vma->vm_flags & VM_WRITE))
  			goto bad_area;
  	} else {
@@ -3225,7 +3240,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_32.c linux-2.6.30.5/arch/sparc/mm/
  			goto bad_area;
 diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/fault_64.c
 --- linux-2.6.30.5/arch/sparc/mm/fault_64.c	2009-07-24 17:47:51.000000000 -0400
-+++ linux-2.6.30.5/arch/sparc/mm/fault_64.c	2009-07-30 09:48:09.913853340 -0400
++++ linux-2.6.30.5/arch/sparc/mm/fault_64.c	2009-08-27 21:11:25.310208001 -0400
 @@ -20,6 +20,9 @@
  #include <linux/kprobes.h>
  #include <linux/kdebug.h>
@@ -3236,7 +3251,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
  
  #include <asm/page.h>
  #include <asm/pgtable.h>
-@@ -249,6 +252,367 @@ static void noinline bogus_32bit_fault_a
+@@ -249,6 +252,404 @@ static void noinline bogus_32bit_fault_a
  	show_regs(regs);
  }
  
@@ -3320,6 +3335,10 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +			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;
@@ -3335,6 +3354,10 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +			unsigned long addr;
 +
 +			addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
++
++			if (test_thread_flag(TIF_32BIT))
++				addr &= 0xFFFFFFFFUL;
++
 +			regs->tpc = addr;
 +			regs->tnpc = addr+4;
 +			return 2;
@@ -3360,6 +3383,10 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +			addr = (sethi & 0x003FFFFFU) << 10;
 +			regs->u_regs[UREG_G1] = addr;
 +			addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
++
++			if (test_thread_flag(TIF_32BIT))
++				addr &= 0xFFFFFFFFUL;
++
 +			regs->tpc = addr;
 +			regs->tnpc = addr+4;
 +			return 2;
@@ -3503,6 +3530,9 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +			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));
@@ -3556,6 +3586,25 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +				regs->tnpc = addr+4;
 +				return 3;
 +			}
++
++			/* PaX: newer glibc/binutils generate sethi/jmp instead of save/call */
++			if ((save & 0xFFC00000U) == 0x05000000U &&
++			    (call & 0xFFFFE000U) == 0x85C0A000U &&
++			    nop == 0x01000000U)
++			{
++				unsigned long addr;
++
++				addr = (save & 0x003FFFFFU) << 10;
++				regs->u_regs[UREG_G2] = addr;
++				addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
++
++				if (test_thread_flag(TIF_32BIT))
++					addr &= 0xFFFFFFFFUL;
++
++				regs->tpc = addr;
++				regs->tnpc = addr+4;
++				return 3;
++			}
 +		}
 +	} while (0);
 +
@@ -3574,6 +3623,9 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
 +		{
 +			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;
@@ -3604,7 +3656,7 @@ diff -urNp linux-2.6.30.5/arch/sparc/mm/fault_64.c linux-2.6.30.5/arch/sparc/mm/
  asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
  {
  	struct mm_struct *mm = current->mm;
-@@ -315,6 +679,29 @@ asmlinkage void __kprobes do_sparc64_fau
+@@ -315,6 +716,29 @@ asmlinkage void __kprobes do_sparc64_fau
  	if (!vma)
  		goto bad_area;
  
@@ -11293,7 +11345,7 @@ diff -urNp linux-2.6.30.5/arch/x86/kernel/vmi_32.c linux-2.6.30.5/arch/x86/kerne
  	 * to convert VMI_IRET to a call instead of a jump; so we have
 diff -urNp linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S
 --- linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S	2009-07-24 17:47:51.000000000 -0400
-+++ linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S	2009-07-30 09:48:09.962543704 -0400
++++ linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S	2009-08-27 21:11:25.322527521 -0400
 @@ -15,6 +15,20 @@
  #include <asm/page_types.h>
  #include <asm/cache.h>
@@ -11523,7 +11575,7 @@ diff -urNp linux-2.6.30.5/arch/x86/kernel/vmlinux_32.lds.S linux-2.6.30.5/arch/x
 +  .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) {
 +	MODULES_VADDR = .;
 +	BYTE(0)
-+	. += (6 * 1024 * 1024);
++	. += (8 * 1024 * 1024);
 +	. = ALIGN(PMD_SIZE);
 +	MODULES_END = . - 1;
 +  }
@@ -40886,7 +40938,7 @@ diff -urNp linux-2.6.30.5/mm/memory.c linux-2.6.30.5/mm/memory.c
  	 * Dumping its contents makes post-mortem fully interpretable later
 diff -urNp linux-2.6.30.5/mm/mempolicy.c linux-2.6.30.5/mm/mempolicy.c
 --- linux-2.6.30.5/mm/mempolicy.c	2009-07-24 17:47:51.000000000 -0400
-+++ linux-2.6.30.5/mm/mempolicy.c	2009-07-30 09:48:10.145161384 -0400
++++ linux-2.6.30.5/mm/mempolicy.c	2009-08-28 19:17:19.665274493 -0400
 @@ -551,6 +551,10 @@ static int mbind_range(struct vm_area_st
  	struct vm_area_struct *next;
  	int err;
@@ -40933,7 +40985,32 @@ diff -urNp linux-2.6.30.5/mm/mempolicy.c linux-2.6.30.5/mm/mempolicy.c
  	if (end == start)
  		return 0;
  
-@@ -2290,7 +2315,7 @@ int show_numa_map(struct seq_file *m, vo
+@@ -1142,6 +1167,14 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pi
+ 	if (!mm)
+ 		return -EINVAL;
+ 
++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
++	if (mm != current->mm &&
++	    (mm->pax_flags & MF_PAX_RANDMMAP || mm->pax_flags & MF_PAX_SEGMEXEC)) {
++		err = -EPERM;
++		goto out;
++	}
++#endif
++
+ 	/*
+ 	 * Check if this process has the right to modify the specified
+ 	 * process. The right exists if the process has administrative
+@@ -1151,8 +1184,7 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pi
+ 	rcu_read_lock();
+ 	tcred = __task_cred(task);
+ 	if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
+-	    cred->uid  != tcred->suid && cred->uid  != tcred->uid &&
+-	    !capable(CAP_SYS_NICE)) {
++	    cred->uid  != tcred->suid && !capable(CAP_SYS_NICE)) {
+ 		rcu_read_unlock();
+ 		err = -EPERM;
+ 		goto out;
+@@ -2290,7 +2322,7 @@ int show_numa_map(struct seq_file *m, vo
  
  	if (file) {
  		seq_printf(m, " file=");
@@ -40942,6 +41019,34 @@ diff -urNp linux-2.6.30.5/mm/mempolicy.c linux-2.6.30.5/mm/mempolicy.c
  	} else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) {
  		seq_printf(m, " heap");
  	} else if (vma->vm_start <= mm->start_stack &&
+diff -urNp linux-2.6.30.5/mm/migrate.c linux-2.6.30.5/mm/migrate.c
+--- linux-2.6.30.5/mm/migrate.c	2009-07-24 17:47:51.000000000 -0400
++++ linux-2.6.30.5/mm/migrate.c	2009-08-28 19:16:52.585127596 -0400
+@@ -1085,6 +1085,14 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, 
+ 	if (!mm)
+ 		return -EINVAL;
+ 
++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
++	if (mm != current->mm &&
++	    (mm->pax_flags & MF_PAX_RANDMMAP || mm->pax_flags & MF_PAX_SEGMEXEC)) {
++		err = -EPERM;
++		goto out;
++	}
++#endif
++
+ 	/*
+ 	 * Check if this process has the right to modify the specified
+ 	 * process. The right exists if the process has administrative
+@@ -1094,8 +1102,7 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, 
+ 	rcu_read_lock();
+ 	tcred = __task_cred(task);
+ 	if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
+-	    cred->uid  != tcred->suid && cred->uid  != tcred->uid &&
+-	    !capable(CAP_SYS_NICE)) {
++	    cred->uid  != tcred->suid && !capable(CAP_SYS_NICE)) {
+ 		rcu_read_unlock();
+ 		err = -EPERM;
+ 		goto out;
 diff -urNp linux-2.6.30.5/mm/mlock.c linux-2.6.30.5/mm/mlock.c
 --- linux-2.6.30.5/mm/mlock.c	2009-07-24 17:47:51.000000000 -0400
 +++ linux-2.6.30.5/mm/mlock.c	2009-07-30 11:10:49.799565380 -0400
@@ -43474,6 +43579,18 @@ diff -urNp linux-2.6.30.5/net/ipv4/inet_hashtables.c linux-2.6.30.5/net/ipv4/ine
  		if (tw) {
  			inet_twsk_deschedule(tw, death_row);
  			inet_twsk_put(tw);
+diff -urNp linux-2.6.30.5/net/ipv4/ip_output.c linux-2.6.30.5/net/ipv4/ip_output.c
+--- linux-2.6.30.5/net/ipv4/ip_output.c	2009-07-24 17:47:51.000000000 -0400
++++ linux-2.6.30.5/net/ipv4/ip_output.c	2009-08-28 18:54:39.383265912 -0400
+@@ -814,6 +814,8 @@ int ip_append_data(struct sock *sk,
+ 			inet->cork.addr = ipc->addr;
+ 		}
+ 		rt = *rtp;
++		if (unlikely(rt == NULL))
++			return -EFAULT;
+ 		/*
+ 		 * We steal reference to this route, caller should not release it
+ 		 */
 diff -urNp linux-2.6.30.5/net/ipv4/netfilter/nf_nat_snmp_basic.c linux-2.6.30.5/net/ipv4/netfilter/nf_nat_snmp_basic.c
 --- linux-2.6.30.5/net/ipv4/netfilter/nf_nat_snmp_basic.c	2009-07-24 17:47:51.000000000 -0400
 +++ linux-2.6.30.5/net/ipv4/netfilter/nf_nat_snmp_basic.c	2009-07-30 09:48:10.155784268 -0400
diff --git a/main/linux-grsec/linux-nbma-mroute-v4-2.6.30.diff b/main/linux-grsec/linux-nbma-mroute-v4-2.6.30.diff
deleted file mode 100644
index 636d807a..00000000
--- a/main/linux-grsec/linux-nbma-mroute-v4-2.6.30.diff
+++ /dev/null
@@ -1,258 +0,0 @@
-diff --git a/include/linux/mroute.h b/include/linux/mroute.h
-index 0d45b4e..406ef6f 100644
---- a/include/linux/mroute.h
-+++ b/include/linux/mroute.h
-@@ -33,7 +33,7 @@
- #define SIOCGETSGCNT	(SIOCPROTOPRIVATE+1)
- #define SIOCGETRPF	(SIOCPROTOPRIVATE+2)
- 
--#define MAXVIFS		32	
-+#define MAXVIFS		256
- typedef unsigned long vifbitmap_t;	/* User mode code depends on this lot */
- typedef unsigned short vifi_t;
- #define ALL_VIFS	((vifi_t)(-1))
-@@ -66,6 +66,7 @@ struct vifctl {
- #define VIFF_TUNNEL	0x1	/* IPIP tunnel */
- #define VIFF_SRCRT	0x2	/* NI */
- #define VIFF_REGISTER	0x4	/* register vif	*/
-+#define VIFF_NBMA	0x10
- 
- /*
-  *	Cache manipulation structures for mrouted and PIMd
-diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
-index 13e9dd3..43c988b 100644
---- a/net/ipv4/ipmr.c
-+++ b/net/ipv4/ipmr.c
-@@ -105,6 +105,31 @@ static struct net_protocol pim_protocol;
- 
- static struct timer_list ipmr_expire_timer;
- 
-+static __be32 ipmr_get_skb_nbma(struct sk_buff *skb)
-+{
-+	union {
-+		char addr[MAX_ADDR_LEN];
-+		__be32 inaddr;
-+	} u;
-+
-+	if (dev_parse_header(skb, u.addr) != 4)
-+		return INADDR_ANY;
-+
-+	return u.inaddr;
-+}
-+
-+static int ip_mr_match_vif_skb(struct vif_device *vif, struct sk_buff *skb)
-+{
-+	if (vif->dev != skb->dev)
-+		return 0;
-+
-+	if (vif->flags & VIFF_NBMA)
-+		return ipmr_get_skb_nbma(skb) == vif->remote;
-+
-+	return 1;
-+}
-+
-+
- /* Service routines creating virtual interfaces: DVMRP tunnels and PIMREG */
- 
- static void ipmr_del_tunnel(struct net_device *dev, struct vifctl *v)
-@@ -470,6 +495,7 @@ static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
- 			return err;
- 		}
- 		break;
-+	case VIFF_NBMA:
- 	case 0:
- 		dev = ip_dev_find(net, vifc->vifc_lcl_addr.s_addr);
- 		if (!dev)
-@@ -504,7 +530,7 @@ static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
- 	v->pkt_in = 0;
- 	v->pkt_out = 0;
- 	v->link = dev->ifindex;
--	if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
-+	if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER|VIFF_NBMA))
- 		v->link = dev->iflink;
- 
- 	/* And finish update writing critical data */
-@@ -1212,12 +1238,15 @@ static inline int ipmr_forward_finish(struct sk_buff *skb)
- {
- 	struct ip_options * opt	= &(IPCB(skb)->opt);
- 
--	IP_INC_STATS_BH(dev_net(skb->dst->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
-+	IP_INC_STATS_BH(dev_net(skb->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
- 
- 	if (unlikely(opt->optlen))
- 		ip_forward_options(skb);
- 
--	return dst_output(skb);
-+	if (skb->dst != NULL)
-+		return dst_output(skb);
-+	else
-+		return dev_queue_xmit(skb);
- }
- 
- /*
-@@ -1230,7 +1259,8 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
- 	const struct iphdr *iph = ip_hdr(skb);
- 	struct vif_device *vif = &net->ipv4.vif_table[vifi];
- 	struct net_device *dev;
--	struct rtable *rt;
-+	struct net_device *fromdev = skb->dev;
-+	struct rtable *rt = NULL;
- 	int    encap = 0;
- 
- 	if (vif->dev == NULL)
-@@ -1257,6 +1287,19 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
- 		if (ip_route_output_key(net, &rt, &fl))
- 			goto out_free;
- 		encap = sizeof(struct iphdr);
-+		dev = rt->u.dst.dev;
-+	} else if (vif->flags&VIFF_NBMA) {
-+		/* Fixme, we should take tunnel source address from the
-+		 * tunnel device binding if it exists */
-+		struct flowi fl = { .oif = vif->link,
-+				    .nl_u = { .ip4_u =
-+					      { .daddr = vif->remote,
-+						.tos = RT_TOS(iph->tos) } },
-+				    .proto = IPPROTO_GRE };
-+		if (ip_route_output_key(&init_net, &rt, &fl))
-+			goto out_free;
-+		encap = LL_RESERVED_SPACE(rt->u.dst.dev);
-+		dev = vif->dev;
- 	} else {
- 		struct flowi fl = { .oif = vif->link,
- 				    .nl_u = { .ip4_u =
-@@ -1265,34 +1308,39 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
- 				    .proto = IPPROTO_IPIP };
- 		if (ip_route_output_key(net, &rt, &fl))
- 			goto out_free;
-+		dev = rt->u.dst.dev;
- 	}
- 
--	dev = rt->u.dst.dev;
-+	if (!(vif->flags & VIFF_NBMA)) {
-+		if (skb->len+encap > dst_mtu(&rt->u.dst) && (ntohs(iph->frag_off) & IP_DF)) {
-+			/* Do not fragment multicasts. Alas, IPv4 does not
-+			   allow to send ICMP, so that packets will disappear
-+			   to blackhole.
-+			*/
- 
--	if (skb->len+encap > dst_mtu(&rt->u.dst) && (ntohs(iph->frag_off) & IP_DF)) {
--		/* Do not fragment multicasts. Alas, IPv4 does not
--		   allow to send ICMP, so that packets will disappear
--		   to blackhole.
--		 */
--
--		IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
--		ip_rt_put(rt);
--		goto out_free;
-+			IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
-+			goto out_free_rt;
-+		}
- 	}
- 
- 	encap += LL_RESERVED_SPACE(dev) + rt->u.dst.header_len;
- 
--	if (skb_cow(skb, encap)) {
--		ip_rt_put(rt);
--		goto out_free;
--	}
-+	if (skb_cow(skb, encap))
-+		goto out_free_rt;
- 
- 	vif->pkt_out++;
- 	vif->bytes_out += skb->len;
- 
- 	dst_release(skb->dst);
--	skb->dst = &rt->u.dst;
-+	if (vif->flags & VIFF_NBMA) {
-+		ip_rt_put(rt);
-+		skb->dst = NULL;
-+		rt = NULL;
-+	} else {
-+		skb->dst = &rt->u.dst;
-+	}
- 	ip_decrease_ttl(ip_hdr(skb));
-+	skb->dev = dev;
- 
- 	/* FIXME: forward and output firewalls used to be called here.
- 	 * What do we do with netfilter? -- RR */
-@@ -1301,6 +1349,10 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
- 		/* FIXME: extra output firewall step used to be here. --RR */
- 		vif->dev->stats.tx_packets++;
- 		vif->dev->stats.tx_bytes += skb->len;
-+	} else if (vif->flags & VIFF_NBMA) {
-+		if (dev_hard_header(skb, dev, ntohs(skb->protocol),
-+				    &vif->remote, NULL, 4) < 0)
-+			goto out_free_rt;
- 	}
- 
- 	IPCB(skb)->flags |= IPSKB_FORWARDED;
-@@ -1316,21 +1368,30 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
- 	 * not mrouter) cannot join to more than one interface - it will
- 	 * result in receiving multiple packets.
- 	 */
--	NF_HOOK(PF_INET, NF_INET_FORWARD, skb, skb->dev, dev,
-+	NF_HOOK(PF_INET, NF_INET_FORWARD, skb, fromdev, dev,
- 		ipmr_forward_finish);
- 	return;
- 
-+out_free_rt:
-+	if (rt != NULL)
-+		ip_rt_put(rt);
- out_free:
- 	kfree_skb(skb);
- 	return;
- }
- 
--static int ipmr_find_vif(struct net_device *dev)
-+static int ipmr_find_vif(struct net_device *dev, __be32 nbma_origin)
- {
- 	struct net *net = dev_net(dev);
- 	int ct;
- 	for (ct = net->ipv4.maxvif-1; ct >= 0; ct--) {
--		if (net->ipv4.vif_table[ct].dev == dev)
-+		if (net->ipv4.vif_table[ct].dev != dev)
-+			continue;
-+
-+		if (net->ipv4.vif_table[ct].flags & VIFF_NBMA) {
-+			if (net->ipv4.vif_table[ct].remote == nbma_origin)
-+				break;
-+		} else if (nbma_origin == INADDR_ANY)
- 			break;
- 	}
- 	return ct;
-@@ -1351,7 +1412,7 @@ static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local
- 	/*
- 	 * Wrong interface: drop packet and (maybe) send PIM assert.
- 	 */
--	if (net->ipv4.vif_table[vif].dev != skb->dev) {
-+	if (!ip_mr_match_vif_skb(&net->ipv4.vif_table[vif], skb)) {
- 		int true_vifi;
- 
- 		if (skb->rtable->fl.iif == 0) {
-@@ -1370,7 +1431,7 @@ static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local
- 		}
- 
- 		cache->mfc_un.res.wrong_if++;
--		true_vifi = ipmr_find_vif(skb->dev);
-+		true_vifi = ipmr_find_vif(skb->dev, ipmr_get_skb_nbma(skb));
- 
- 		if (true_vifi >= 0 && net->ipv4.mroute_do_assert &&
- 		    /* pimsm uses asserts, when switching from RPT to SPT,
-@@ -1479,7 +1540,7 @@ int ip_mr_input(struct sk_buff *skb)
- 			skb = skb2;
- 		}
- 
--		vif = ipmr_find_vif(skb->dev);
-+		vif = ipmr_find_vif(skb->dev, ipmr_get_skb_nbma(skb));
- 		if (vif >= 0) {
- 			int err = ipmr_cache_unresolved(net, vif, skb);
- 			read_unlock(&mrt_lock);
-@@ -1663,7 +1724,7 @@ int ipmr_get_route(struct net *net,
- 		}
- 
- 		dev = skb->dev;
--		if (dev == NULL || (vif = ipmr_find_vif(dev)) < 0) {
-+		if (dev == NULL || (vif = ipmr_find_vif(dev, INADDR_ANY)) < 0) {
- 			read_unlock(&mrt_lock);
- 			return -ENODEV;
- 		}