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: 0 PID: 4406 Comm: syz-executor948 Not tainted 4.4.145-g2241aa9 #78
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d7308000 task.stack: ffff8801d4738000
RIP: 0010:[<ffffffff8349e93f>]  [<ffffffff8349e93f>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP: 0010:[<ffffffff8349e93f>]  [<ffffffff8349e93f>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP: 0010:[<ffffffff8349e93f>]  [<ffffffff8349e93f>] xfrm6_policy_check include/net/xfrm.h:1086 [inline]
RIP: 0010:[<ffffffff8349e93f>]  [<ffffffff8349e93f>] udpv6_queue_rcv_skb+0x18f/0x1510 net/ipv6/udp.c:634
RSP: 0018:ffff8801d473f890  EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8801d86b0640 RCX: 0000000000000000
RDX: 000000000000000c RSI: ffffffff8349e926 RDI: 0000000000000060
RBP: ffff8801d473f8d0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8801d7308000 R12: ffff8800af7f3a00
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8800af7f3a58
FS:  0000000000741880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 00000001d79c0000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 00000001d86b06c8 ffff8800af7f3a00 ffff8801d86b06c8 ffff8801d86b0640
 ffff8800af7f3a00 dffffc0000000000 ffff8800af7f3a58 ffff8800af7f38c0
 ffff8801d473f940 ffffffff82f302fb ffff8801d86b0a70 ffff8801d86b07c8
Call Trace:
 [<ffffffff82f302fb>] sk_backlog_rcv include/net/sock.h:871 [inline]
 [<ffffffff82f302fb>] __release_sock net/core/sock.c:2023 [inline]
 [<ffffffff82f302fb>] release_sock+0x17b/0x500 net/core/sock.c:2473
 [<ffffffff8349b327>] udpv6_sendmsg+0x917/0x24c0 net/ipv6/udp.c:1364
 [<ffffffff833064b3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f22e1c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f22e1c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f23afc>] SYSC_sendto+0x21c/0x370 net/socket.c:1665
 [<ffffffff82f26180>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff838c84e5>] entry_SYSCALL_64_fastpath+0x22/0x9e
Code: 74 24 58 41 f6 c6 01 0f 85 ea 07 00 00 e8 4a 4e eb 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 c9 0d 00 00 41 f6 46 60 04 
RIP  [<ffffffff8349e93f>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP  [<ffffffff8349e93f>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP  [<ffffffff8349e93f>] xfrm6_policy_check include/net/xfrm.h:1086 [inline]
RIP  [<ffffffff8349e93f>] udpv6_queue_rcv_skb+0x18f/0x1510 net/ipv6/udp.c:634
 RSP <ffff8801d473f890>
---[ end trace 386b9c5af7b762d5 ]---