kasan: CONFIG_KASAN_INLINE enabled
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: 6992 Comm: syz-executor0 Not tainted 4.4.106-g2fea039 #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b7a64680 task.stack: ffff8801d5ce8000
RIP: 0010:[<ffffffff81d287d6>]  [<ffffffff81d287d6>] __list_del_entry+0x86/0x1d0 lib/list_debug.c:57
RSP: 0018:ffff8801d5cef5d0  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8801d79a4090
RDX: 0000000000000000 RSI: ffffffff854f8f40 RDI: ffff8801d79a4098
RBP: ffff8801d5cef5e8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffff1003ab9de8a R12: 0000000000000000
R13: ffff8801d79a40b8 R14: 00000000ffffffde R15: ffff8801d79a4039
FS:  00007fb6b23c1700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f010a74ddb8 CR3: 00000001d79ef000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 00000000ffffffde ffff8801d79a4090 ffff8800b217b7c0 ffff8801d5cef600
 ffffffff81d2892d ffff8801d79a4090 ffff8801d5cef620 ffffffff8326fab4
 ffff8801ce6a2200 ffff8801d79a4090 ffff8801d5cef640 ffffffff83290e1e
Call Trace:
 [<ffffffff81d2892d>] list_del+0xd/0x70 lib/list_debug.c:77
 [<ffffffff8326fab4>] xfrm_state_walk_done+0x64/0x90 net/xfrm/xfrm_state.c:1675
 [<ffffffff83290e1e>] xfrm_dump_sa_done+0x6e/0x90 net/xfrm/xfrm_user.c:913
 [<ffffffff82f28114>] netlink_dump+0x7e4/0xb60 net/netlink/af_netlink.c:2158
 [<ffffffff82f2c886>] __netlink_dump_start+0x4e6/0x770 net/netlink/af_netlink.c:2223
 [<ffffffff83291332>] netlink_dump_start include/linux/netlink.h:175 [inline]
 [<ffffffff83291332>] xfrm_user_rcv_msg+0x4f2/0x730 net/xfrm/xfrm_user.c:2512
 [<ffffffff82f31edf>] netlink_rcv_skb+0x11f/0x330 net/netlink/af_netlink.c:2305
 [<ffffffff8328d5c9>] xfrm_netlink_rcv+0x69/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff82f30ae5>] netlink_unicast_kernel net/netlink/af_netlink.c:1223 [inline]
 [<ffffffff82f30ae5>] netlink_unicast+0x4c5/0x760 net/netlink/af_netlink.c:1249
 [<ffffffff82f315b2>] netlink_sendmsg+0x832/0xbc0 net/netlink/af_netlink.c:1803
 [<ffffffff82d936b5>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82d936b5>] sock_sendmsg+0xb5/0xf0 net/socket.c:635
 [<ffffffff82d9518d>] ___sys_sendmsg+0x66d/0x7d0 net/socket.c:1961
 [<ffffffff82d96f13>] __sys_sendmsg+0xc3/0x160 net/socket.c:1995
 [<ffffffff82d96fbd>] SYSC_sendmsg net/socket.c:2006 [inline]
 [<ffffffff82d96fbd>] SyS_sendmsg+0xd/0x20 net/socket.c:2002
 [<ffffffff8374a3b6>] 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  [<ffffffff81d287d6>] __list_del_entry+0x86/0x1d0 lib/list_debug.c:57
 RSP <ffff8801d5cef5d0>
---[ end trace 7bb8a4192cbd00a9 ]---