kasan: CONFIG_KASAN_INLINE enabled[   53.267767] audit: type=1400 audit(1513694939.988:27): avc:  denied  { accept } for  pid=10173 comm="syz-executor7" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 10199 Comm: syz-executor3 Not tainted 4.4.106-g1700518 #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cf91df00 task.stack: ffff8800b1a70000
RIP: 0010:[<ffffffff81d62bb6>]  [<ffffffff81d62bb6>] __list_del_entry+0x86/0x1d0 lib/list_debug.c:57
RSP: 0018:ffff8800b1a775a8  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8800b1b71e90
RDX: 0000000000000000 RSI: ffffffff851c5350 RDI: ffff8800b1b71e98
RBP: ffff8800b1a775c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffff1001634ee84 R12: 0000000000000000
R13: ffff8800b1b71e39 R14: ffff8800b1b71eb8 R15: 00000000ffffffde
FS:  00007f8ac8737700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000718030 CR3: 00000000b4114000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8800b1b71eb8 ffff8800b1b71e90 ffff8800abb2d5c0 ffff8800b1a775d8
 ffffffff81d62d0d ffff8800b1b71e90 ffff8800b1a775f8 ffffffff832ab16e
 ffff8801d9869100 ffff8800b1b71e90 ffff8800b1a77618 ffffffff832ca6b3
Call Trace:
 [<ffffffff81d62d0d>] list_del+0xd/0x70 lib/list_debug.c:77
 [<ffffffff832ab16e>] xfrm_state_walk_done+0x6e/0xa0 net/xfrm/xfrm_state.c:1675
 [<ffffffff832ca6b3>] xfrm_dump_sa_done+0x73/0xa0 net/xfrm/xfrm_user.c:913
 [<ffffffff82f7ba21>] netlink_dump+0x871/0xb40 net/netlink/af_netlink.c:2158
 [<ffffffff82f8020e>] __netlink_dump_start+0x52e/0x7c0 net/netlink/af_netlink.c:2223
 [<ffffffff832cac9d>] netlink_dump_start include/linux/netlink.h:175 [inline]
 [<ffffffff832cac9d>] xfrm_user_rcv_msg+0x5bd/0x6b0 net/xfrm/xfrm_user.c:2512
 [<ffffffff82f858ee>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2305
 [<ffffffff832c702f>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff82f84472>] netlink_unicast_kernel net/netlink/af_netlink.c:1223 [inline]
 [<ffffffff82f84472>] netlink_unicast+0x522/0x760 net/netlink/af_netlink.c:1249
 [<ffffffff82f84f98>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1803
 [<ffffffff82de712a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82de712a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82de8d01>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1961
 [<ffffffff82dead53>] __sys_sendmsg+0xd3/0x190 net/socket.c:1995
 [<ffffffff82deae3d>] SYSC_sendmsg net/socket.c:2006 [inline]
 [<ffffffff82deae3d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2002
 [<ffffffff8376ef36>] entry_SYSCALL_64_fastpath+0x16/0x76
Code: c4 0f 84 94 00 00 00 48 b8 00 02 00 00 00 00 ad de 48 39 c3 0f 84 a5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 00 00 00 4c 8b 03 49 39 c8 0f 85 9b 00 00 
RIP  [<ffffffff81d62bb6>] __list_del_entry+0x86/0x1d0 lib/list_debug.c:57
 RSP <ffff8800b1a775a8>
---[ end trace e1763ddf85848826 ]---