kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 27983 Comm: syz-executor7 Not tainted 4.9.117-g8b21e85 #71
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801bda41800 task.stack: ffff88013d930000
RIP: 0010:[<ffffffff83504b43>]  [<ffffffff83504b43>] xfrm_policy_ok net/xfrm/xfrm_policy.c:2410 [inline]
RIP: 0010:[<ffffffff83504b43>]  [<ffffffff83504b43>] __xfrm_policy_check+0xc93/0x1b20 net/xfrm/xfrm_policy.c:2586
RSP: 0018:ffff8801db307580  EFLAGS: 00010202
RAX: 000000000000000a RBX: 0000000000000020 RCX: ffff8801bda41800
RDX: 0000000000000002 RSI: ffffffff83504b12 RDI: 0000000000000052
RBP: ffff8801db3077c8 R08: ffff8801bda420e8 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8801db3076c0 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f4a4f2a1700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd18ce0ecc CR3: 0000000148e33000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff83503fef ffff8801db307620 ffff8801db3076b8 0000000200000001
 ffff8801db307628 ffff8801c3716428 00000002000220b8 ffff8801db3076c8
 ffff88019aa9f600 ffff880100000002 1ffff1003b660ec0 ffff8801db307720
Call Trace:
 [<ffffffff833ff33d>] __xfrm_policy_check2 include/net/xfrm.h:1063 [inline]
 [<ffffffff833ff33d>] xfrm_policy_check include/net/xfrm.h:1072 [inline]
 [<ffffffff833ff33d>] xfrm4_policy_check include/net/xfrm.h:1077 [inline]
 [<ffffffff833ff33d>] udp_queue_rcv_skb+0xa2d/0x1770 net/ipv4/udp.c:1512
 [<ffffffff83400ce4>] __udp4_lib_mcast_deliver net/ipv4/udp.c:1693 [inline]
 [<ffffffff83400ce4>] __udp4_lib_rcv+0xc64/0x2b10 net/ipv4/udp.c:1791
 [<ffffffff83403c21>] udp_rcv+0x21/0x30 net/ipv4/udp.c:1972
 [<ffffffff83325037>] ip_local_deliver_finish+0x257/0xa60 net/ipv4/ip_input.c:216
 [<ffffffff83327a29>] NF_HOOK_THRESH include/linux/netfilter.h:232 [inline]
 [<ffffffff83327a29>] NF_HOOK include/linux/netfilter.h:255 [inline]
 [<ffffffff83327a29>] ip_local_deliver+0x389/0x4d0 net/ipv4/ip_input.c:257
 [<ffffffff83325f16>] dst_input include/net/dst.h:513 [inline]
 [<ffffffff83325f16>] ip_rcv_finish+0x6d6/0x1920 net/ipv4/ip_input.c:396
 [<ffffffff8332867b>] NF_HOOK_THRESH include/linux/netfilter.h:232 [inline]
 [<ffffffff8332867b>] NF_HOOK include/linux/netfilter.h:255 [inline]
 [<ffffffff8332867b>] ip_rcv+0xb0b/0x1370 net/ipv4/ip_input.c:487
 [<ffffffff8307e110>] __netif_receive_skb_core+0x12a0/0x2a20 net/core/dev.c:4267
 [<ffffffff8307f8eb>] __netif_receive_skb+0x5b/0x1c0 net/core/dev.c:4305
 [<ffffffff8307fc56>] process_backlog+0x206/0x6a0 net/core/dev.c:4926
 [<ffffffff83085cb4>] napi_poll net/core/dev.c:5227 [inline]
 [<ffffffff83085cb4>] net_rx_action+0x3c4/0xde0 net/core/dev.c:5292
 [<ffffffff83a037fb>] __do_softirq+0x20b/0x937 kernel/softirq.c:284
 [<ffffffff839fdc1c>] do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:843
 <EOI> [  404.857776]  [<ffffffff81149859>] do_softirq.part.14+0x99/0xb0 kernel/softirq.c:328
 [<ffffffff8114b059>] do_softirq+0x19/0x20 kernel/softirq.c:331
 [<ffffffff8308314d>] netif_rx_ni+0xbd/0x310 net/core/dev.c:3897
 [<ffffffff83083589>] dev_loopback_xmit+0x1e9/0x470 net/core/dev.c:3221
 [<ffffffff833412e2>] ip_mc_finish_output net/ipv4/ip_output.c:327 [inline]
 [<ffffffff833412e2>] NF_HOOK_THRESH include/linux/netfilter.h:232 [inline]
 [<ffffffff833412e2>] NF_HOOK include/linux/netfilter.h:255 [inline]
 [<ffffffff833412e2>] ip_mc_output+0xa62/0xd50 net/ipv4/ip_output.c:365
 [<ffffffff8333e17b>] dst_output include/net/dst.h:507 [inline]
 [<ffffffff8333e17b>] ip_local_out+0x9b/0x180 net/ipv4/ip_output.c:124
 [<ffffffff8334452c>] ip_send_skb+0x3c/0xc0 net/ipv4/ip_output.c:1489
 [<ffffffff833f36a5>] udp_send_skb+0x5b5/0xc50 net/ipv4/udp.c:833
 [<ffffffff833f3d8e>] udp_push_pending_frames+0x4e/0xe0 net/ipv4/udp.c:861
 [<ffffffff833f8e57>] udp_sendmsg+0x1097/0x1c50 net/ipv4/udp.c:1089
 [<ffffffff8342c8a3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:770
 [<ffffffff83018fcc>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff83018fcc>] sock_sendmsg+0xcc/0x110 net/socket.c:645
 [<ffffffff83019cbc>] SYSC_sendto+0x21c/0x370 net/socket.c:1670
 [<ffffffff8301c2d0>] SyS_sendto+0x40/0x50 net/socket.c:1638
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839fcc13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: ff 48 c1 e8 03 42 80 3c 30 00 0f 85 52 0c 00 00 48 8b 85 f0 fd ff ff 48 8b 18 48 8d 7b 32 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 08 84 c0 0f 85 bd 0c 00 00 0f b6 43 32 
RIP  [<ffffffff83504b43>] xfrm_policy_ok net/xfrm/xfrm_policy.c:2410 [inline]
RIP  [<ffffffff83504b43>] __xfrm_policy_check+0xc93/0x1b20 net/xfrm/xfrm_policy.c:2586
 RSP <ffff8801db307580>
---[ end trace cdaa3d068ded42d8 ]---