random: nonblocking pool is initialized
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: 3914 Comm: syzkaller597547 Not tainted 4.4.114-g4e74e98 #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d95c9800 task.stack: ffff8800b1998000
RIP: 0010:[<ffffffff83373361>]  [<ffffffff83373361>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP: 0010:[<ffffffff83373361>]  [<ffffffff83373361>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP: 0010:[<ffffffff83373361>]  [<ffffffff83373361>] xfrm6_policy_check include/net/xfrm.h:1086 [inline]
RIP: 0010:[<ffffffff83373361>]  [<ffffffff83373361>] udpv6_queue_rcv_skb+0x191/0x1510 net/ipv6/udp.c:634
RSP: 0018:ffff8800b199f5d8  EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8801cbfc8000 RCX: ffffffff83373348
RDX: 000000000000000c RSI: ffff8801cf3aab40 RDI: 0000000000000060
RBP: ffff8800b199f618 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff10016333e8c R12: ffff8801cf3aab40
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cf3aab98
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008b45900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020685ff0 CR3: 00000000b2eaa000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 00000001cbfc8088 ffff8801cbfc8000 ffff8801cbfc8088 dffffc0000000000
 ffff8801cbfc8000 0000000000000000 ffffed00397f9086 ffff8801cf3aab40
 ffff8800b199f688 ffffffff82df89e6 ffff8801cbfc8188 ffff8801cbfc8190
Call Trace:
 [<ffffffff82df89e6>] sk_backlog_rcv include/net/sock.h:871 [inline]
 [<ffffffff82df89e6>] __release_sock net/core/sock.c:2023 [inline]
 [<ffffffff82df89e6>] release_sock+0x176/0x510 net/core/sock.c:2473
 [<ffffffff831a2a44>] udp_sendmsg+0x15c4/0x1c30 net/ipv4/udp.c:1105
 [<ffffffff83371734>] udpv6_sendmsg+0x1434/0x2500 net/ipv6/udp.c:1178
 [<ffffffff831d6fec>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82deb79a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deb79a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82dec6e8>] SYSC_sendto+0x2c8/0x340 net/socket.c:1665
 [<ffffffff82deebe0>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff83775c6a>] sysenter_flags_fixed+0xd/0x17
Code: 74 24 58 41 f6 c6 01 0f 85 b7 07 00 00 e8 28 da fe fd 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 7c 0b 00 00 41 f6 46 60 04 
RIP  [<ffffffff83373361>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP  [<ffffffff83373361>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP  [<ffffffff83373361>] xfrm6_policy_check include/net/xfrm.h:1086 [inline]
RIP  [<ffffffff83373361>] udpv6_queue_rcv_skb+0x191/0x1510 net/ipv6/udp.c:634
 RSP <ffff8800b199f5d8>
---[ end trace 0288937e589e45b2 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..