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
Modules linked in:
CPU: 0 PID: 18533 Comm: syz-executor.4 Not tainted 4.4.174+ #17
task: ffff8800b86c2f80 task.stack: ffff88019bf60000
RIP: 0010:[<ffffffff824813bd>]  [<ffffffff824813bd>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP: 0010:[<ffffffff824813bd>]  [<ffffffff824813bd>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP: 0010:[<ffffffff824813bd>]  [<ffffffff824813bd>] xfrm4_policy_check include/net/xfrm.h:1081 [inline]
RIP: 0010:[<ffffffff824813bd>]  [<ffffffff824813bd>] udp_queue_rcv_skb+0x18d/0x14e0 net/ipv4/udp.c:1520
RSP: 0018:ffff88019bf67978  EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90003d8b000
RDX: 000000000000000c RSI: ffffffff824813a4 RDI: 0000000000000060
RBP: ffff88019bf679b8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d3df4500
R13: ffff8800ba2ba3c0 R14: 0000000000000000 R15: ffff8800ba2ba418
FS:  0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:00000000f54c8b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f87bb86d000 CR3: 00000000b20c4000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d3df4500 ffff880100000001 ffff8801d3df4588 ffff8801d3df4500
 ffff8800ba2ba3c0 dffffc0000000000 ffff8801d3df4588 0000000000000000
 ffff88019bf67a28 ffffffff821e5e40 ffff8801d3df4930 ffff8801d3df4688
Call Trace:
 [<ffffffff821e5e40>] sk_backlog_rcv include/net/sock.h:875 [inline]
 [<ffffffff821e5e40>] __release_sock net/core/sock.c:2024 [inline]
 [<ffffffff821e5e40>] release_sock+0x170/0x500 net/core/sock.c:2477
 [<ffffffff8247f646>] udp_sendmsg+0x1176/0x1c60 net/ipv4/udp.c:1107
 [<ffffffff824a8b42>] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff821d838e>] sock_sendmsg_nosec net/socket.c:638 [inline]
 [<ffffffff821d838e>] sock_sendmsg+0xbe/0x110 net/socket.c:648
 [<ffffffff821dc4f1>] SYSC_sendto net/socket.c:1678 [inline]
 [<ffffffff821dc4f1>] SyS_sendto+0x201/0x340 net/socket.c:1646
 [<ffffffff8100603d>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 [<ffffffff8100603d>] do_fast_syscall_32+0x32d/0xa90 arch/x86/entry/common.c:397
 [<ffffffff8271a350>] sysenter_flags_fixed+0xd/0x1a
Code: 8b 75 58 41 f6 c6 01 0f 85 f9 07 00 00 e8 4c 82 e8 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 6a 0e 00 00 41 f6 46 60 04 
RIP  [<ffffffff824813bd>] __xfrm_policy_check2 include/net/xfrm.h:1070 [inline]
RIP  [<ffffffff824813bd>] xfrm_policy_check include/net/xfrm.h:1076 [inline]
RIP  [<ffffffff824813bd>] xfrm4_policy_check include/net/xfrm.h:1081 [inline]
RIP  [<ffffffff824813bd>] udp_queue_rcv_skb+0x18d/0x14e0 net/ipv4/udp.c:1520
 RSP <ffff88019bf67978>
---[ end trace e4cbb35e128d4e51 ]---