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: 0 PID: 3987 Comm: syzkaller162463 Not tainted 4.4.116-g20ddb25 #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800ba6b9800 task.stack: ffff8800ba658000
RIP: 0010:[<ffffffff831a9a31>]  [<ffffffff831a9a31>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP: 0010:[<ffffffff831a9a31>]  [<ffffffff831a9a31>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP: 0010:[<ffffffff831a9a31>]  [<ffffffff831a9a31>] xfrm4_policy_check include/net/xfrm.h:1081 [inline]
RIP: 0010:[<ffffffff831a9a31>]  [<ffffffff831a9a31>] udp_queue_rcv_skb+0x191/0x1560 net/ipv4/udp.c:1517
RSP: 0018:ffff8800ba65f928  EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8800b9ca0000 RCX: ffffffff831a9a18
RDX: 000000000000000c RSI: ffff8801ce109280 RDI: 0000000000000060
RBP: ffff8800ba65f968 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff100174cbef6 R12: ffff8801ce109280
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801ce1092d8
FS:  0000000001326880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020df9ff0 CR3: 00000000aabda000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8800b9ca0088 ffff880000000001 ffff8800b9ca0088 dffffc0000000000
 ffff8800b9ca0000 0000000000000000 ffffed0017394086 ffff8801ce109280
 ffff8800ba65f9d8 ffffffff82df8d96 ffff8800b9ca0188 ffff8800b9ca0190
Call Trace:
 [<ffffffff82df8d96>] sk_backlog_rcv include/net/sock.h:871 [inline]
 [<ffffffff82df8d96>] __release_sock net/core/sock.c:2023 [inline]
 [<ffffffff82df8d96>] release_sock+0x176/0x510 net/core/sock.c:2473
 [<ffffffff831a3044>] udp_sendmsg+0x15c4/0x1c30 net/ipv4/udp.c:1105
 [<ffffffff831d75ec>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82debb4a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82debb4a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82deca98>] SYSC_sendto+0x2c8/0x340 net/socket.c:1665
 [<ffffffff82deef90>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff83774a1f>] entry_SYSCALL_64_fastpath+0x1c/0x98
Code: 74 24 58 41 f6 c6 01 0f 85 7f 07 00 00 e8 48 73 1b fe 49 83 e6 fe 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 60 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e 9f 0b 00 00 41 f6 46 60 04 
RIP  [<ffffffff831a9a31>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP  [<ffffffff831a9a31>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP  [<ffffffff831a9a31>] xfrm4_policy_check include/net/xfrm.h:1081 [inline]
RIP  [<ffffffff831a9a31>] udp_queue_rcv_skb+0x191/0x1560 net/ipv4/udp.c:1517
 RSP <ffff8800ba65f928>
---[ end trace c49f9c8033a39be6 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..