Bump to 4.8.13

3 files changed, 79 insertions, 3 deletions

diff --git a/.SRCINFO b/.SRCINFO
index 05f02a7a4994..2c9040cfda15 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,6 +1,6 @@
 pkgbase = linux-bfq
 	pkgver = 4.8.13
-	pkgrel = 1
+	pkgrel = 2
 	url = http://algo.ing.unimo.it
 	arch = i686
 	arch = x86_64
@@ -24,6 +24,7 @@ pkgbase = linux-bfq
 	source = 99-linux.hook
 	source = linux.preset
 	source = fix_race_condition_in_packet_set_ring.diff
+	source = net_handle_no_dst_on_skb_in_icmp6_send.patch
 	source = 0005-BFQ-Fix.patch
 	source = 0006-BFQ-Fix.patch
 	validpgpkeys = ABAF11C65A2970B130ABE3C479BE3E4300411886
@@ -43,6 +44,7 @@ pkgbase = linux-bfq
 	sha512sums = d6faa67f3ef40052152254ae43fee031365d0b1524aa0718b659eb75afc21a3f79ea8d62d66ea311a800109bed545bc8f79e8752319cd378eef2cbd3a09aba22
 	sha512sums = 2dc6b0ba8f7dbf19d2446c5c5f1823587de89f4e28e9595937dd51a87755099656f2acec50e3e2546ea633ad1bfd1c722e0c2b91eef1d609103d8abdc0a7cbaf
 	sha512sums = fd5800dcc1b9e7825892dfaedf78d9b64f354695992c9a1b0014e66664c6f0f4c80989439df360c994aab03dc4aa1f4e3481f153a6b4383c9e39da93c8d235d0
+	sha512sums = c53bd47527adbd2599a583e05a7d24f930dc4e86b1de017486588205ad6f262a51a4551593bc7a1218c96541ea073ea03b770278d947b1cd0d2801311fcc80e5
 	sha512sums = 3889679e288d51f6fecc7ed6581ccde34acbf1e4861f5c9ca237a1ad13158502757d3fc457d7b6caf1c8c99c9dba842265004154a71cffb8ec14e1030e49e312
 	sha512sums = 3c3f3b6407d9a1a63cd91c2b5c35e6c932afa5bf33f1b2e8a530dbd9eacda8c8f956616c4cc9228657624da58e354ba5714252237d84ff3386fd65cf44f06ddc
 
diff --git a/PKGBUILD b/PKGBUILD
index 632f23ebc360..827517a97b3a 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -52,7 +52,7 @@ pkgbase=linux-bfq
 # pkgname=('linux-bfq' 'linux-bfq-headers' 'linux-bfq-docs')
 _srcname=linux-4.8
 pkgver=4.8.13
-pkgrel=1
+pkgrel=2
 arch=('i686' 'x86_64')
 url="http://algo.ing.unimo.it"
 license=('GPL2')
@@ -81,6 +81,7 @@ source=("http://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.xz"
          # standard config files for mkinitcpio ramdisk
         'linux.preset'
         'fix_race_condition_in_packet_set_ring.diff'
+        'net_handle_no_dst_on_skb_in_icmp6_send.patch'
         # patches from https://github.com/linusw/linux-bfq/commits/bfq-v8
         '0005-BFQ-Fix.patch'
         '0006-BFQ-Fix.patch')
@@ -103,7 +104,11 @@ prepare() {
     ###  fix a race condition that allows to gain root
     # https://marc.info/?l=linux-netdev&m=148054660230570&w=2
          msg "Fix a race condition that allows to gain root"
-         patch -p1 -i "${srcdir}/fix_race_condition_in_packet_set_ring.diff"    
+         patch -p1 -i "${srcdir}/fix_race_condition_in_packet_set_ring.diff"
+    
+    ### fix https://bugzilla.kernel.org/show_bug.cgi?id=189851
+        msg "Fix https://bugzilla.kernel.org/show_bug.cgi?id=189851"
+        patch -p1 -i "${srcdir}/net_handle_no_dst_on_skb_in_icmp6_send.patch"
 
     ### Patch source with BFQ
         msg "Patching source with BFQ patches"
@@ -463,6 +468,7 @@ sha512sums=('a48a065f21e1c7c4de4cf8ca47b8b8d9a70f86b64e7cfa6e01be490f78895745b9c
             'd6faa67f3ef40052152254ae43fee031365d0b1524aa0718b659eb75afc21a3f79ea8d62d66ea311a800109bed545bc8f79e8752319cd378eef2cbd3a09aba22'
             '2dc6b0ba8f7dbf19d2446c5c5f1823587de89f4e28e9595937dd51a87755099656f2acec50e3e2546ea633ad1bfd1c722e0c2b91eef1d609103d8abdc0a7cbaf'
             'fd5800dcc1b9e7825892dfaedf78d9b64f354695992c9a1b0014e66664c6f0f4c80989439df360c994aab03dc4aa1f4e3481f153a6b4383c9e39da93c8d235d0'
+            'c53bd47527adbd2599a583e05a7d24f930dc4e86b1de017486588205ad6f262a51a4551593bc7a1218c96541ea073ea03b770278d947b1cd0d2801311fcc80e5'
             '3889679e288d51f6fecc7ed6581ccde34acbf1e4861f5c9ca237a1ad13158502757d3fc457d7b6caf1c8c99c9dba842265004154a71cffb8ec14e1030e49e312'
             '3c3f3b6407d9a1a63cd91c2b5c35e6c932afa5bf33f1b2e8a530dbd9eacda8c8f956616c4cc9228657624da58e354ba5714252237d84ff3386fd65cf44f06ddc')
             
diff --git a/net_handle_no_dst_on_skb_in_icmp6_send.patch b/net_handle_no_dst_on_skb_in_icmp6_send.patch
new file mode 100644
index 000000000000..06448a90affe
--- /dev/null
+++ b/net_handle_no_dst_on_skb_in_icmp6_send.patch
@@ -0,0 +1,68 @@
+From 79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2 Mon Sep 17 00:00:00 2001
+From: David Ahern <dsa@cumulusnetworks.com>
+Date: Sun, 27 Nov 2016 18:52:53 -0800
+Subject: [PATCH] net: handle no dst on skb in icmp6_send
+
+Andrey reported the following while fuzzing the kernel with syzkaller:
+
+kasan: CONFIG_KASAN_INLINE enabled
+kasan: GPF could be caused by NULL-ptr deref or user memory access
+general protection fault: 0000 [#1] SMP KASAN
+Modules linked in:
+CPU: 0 PID: 3859 Comm: a.out Not tainted 4.9.0-rc6+ #429
+Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
+task: ffff8800666d4200 task.stack: ffff880067348000
+RIP: 0010:[<ffffffff833617ec>]  [<ffffffff833617ec>]
+icmp6_send+0x5fc/0x1e30 net/ipv6/icmp.c:451
+RSP: 0018:ffff88006734f2c0  EFLAGS: 00010206
+RAX: ffff8800666d4200 RBX: 0000000000000000 RCX: 0000000000000000
+RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000018
+RBP: ffff88006734f630 R08: ffff880064138418 R09: 0000000000000003
+R10: dffffc0000000000 R11: 0000000000000005 R12: 0000000000000000
+R13: ffffffff84e7e200 R14: ffff880064138484 R15: ffff8800641383c0
+FS:  00007fb3887a07c0(0000) GS:ffff88006cc00000(0000) knlGS:0000000000000000
+CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+CR2: 0000000020000000 CR3: 000000006b040000 CR4: 00000000000006f0
+Stack:
+ ffff8800666d4200 ffff8800666d49f8 ffff8800666d4200 ffffffff84c02460
+ ffff8800666d4a1a 1ffff1000ccdaa2f ffff88006734f498 0000000000000046
+ ffff88006734f440 ffffffff832f4269 ffff880064ba7456 0000000000000000
+Call Trace:
+ [<ffffffff83364ddc>] icmpv6_param_prob+0x2c/0x40 net/ipv6/icmp.c:557
+ [<     inline     >] ip6_tlvopt_unknown net/ipv6/exthdrs.c:88
+ [<ffffffff83394405>] ip6_parse_tlv+0x555/0x670 net/ipv6/exthdrs.c:157
+ [<ffffffff8339a759>] ipv6_parse_hopopts+0x199/0x460 net/ipv6/exthdrs.c:663
+ [<ffffffff832ee773>] ipv6_rcv+0xfa3/0x1dc0 net/ipv6/ip6_input.c:191
+ ...
+
+icmp6_send / icmpv6_send is invoked for both rx and tx paths. In both
+cases the dst->dev should be preferred for determining the L3 domain
+if the dst has been set on the skb. Fallback to the skb->dev if it has
+not. This covers the case reported here where icmp6_send is invoked on
+Rx before the route lookup.
+
+Fixes: 5d41ce29e ("net: icmp6_send should use dst dev to determine L3 domain")
+Reported-by: Andrey Konovalov <andreyknvl@google.com>
+Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ net/ipv6/icmp.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
+index 7370ad2..2772004 100644
+--- a/net/ipv6/icmp.c
++++ b/net/ipv6/icmp.c
+@@ -447,8 +447,10 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
+ 
+ 	if (__ipv6_addr_needs_scope_id(addr_type))
+ 		iif = skb->dev->ifindex;
+-	else
+-		iif = l3mdev_master_ifindex(skb_dst(skb)->dev);
++	else {
++		dst = skb_dst(skb);
++		iif = l3mdev_master_ifindex(dst ? dst->dev : skb->dev);
++	}
+ 
+ 	/*
+ 	 *	Must not send error if the source does not uniquely