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kernel BUG at net/key/af_key.c:2068!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 24218 Comm: syz-executor6 Not tainted 4.14.0-rc4+ #80
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d9a0c240 task.stack: ffff8801c4f00000
RIP: 0010:pfkey_xfrm_policy2msg+0x209c/0x22b0 net/key/af_key.c:2068
RSP: 0018:ffff8801c4f07418 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801d342b48c RCX: ffffc90003eeb000
RDX: 00000000000004a4 RSI: ffffffff8444c4fc RDI: ffff8801d342b32c
RBP: ffff8801c4f074f0 R08: 0000000000000001 R09: ffff8801c2c0a000
R10: 000000000000001b R11: ffffed003858141a R12: ffff8801d342b348
R13: ffff8801d342b240 R14: 0000000000000008 R15: 0000000000000001
FS:  00007f67c4e66700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020364ff0 CR3: 00000001d059e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dump_sp+0x14f/0x510 net/key/af_key.c:2669
 xfrm_policy_walk+0x2f1/0xa30 net/xfrm/xfrm_policy.c:1015
 pfkey_dump_sp+0x42/0x50 net/key/af_key.c:2692
 pfkey_do_dump+0xaa/0x3f0 net/key/af_key.c:299
 pfkey_spddump+0x1a0/0x210 net/key/af_key.c:2719
 pfkey_process+0x60b/0x720 net/key/af_key.c:2809
 pfkey_sendmsg+0x4d6/0x9f0 net/key/af_key.c:3648
 sock_sendmsg_nosec net/socket.c:633 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:643
 ___sys_sendmsg+0x75b/0x8a0 net/socket.c:2049
 __sys_sendmsg+0xe5/0x210 net/socket.c:2083
 SYSC_sendmsg net/socket.c:2094 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2090
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4520a9
RSP: 002b:00007f67c4e65c08 EFLAGS: 00000216 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004520a9
RDX: 0000000000000000 RSI: 00000000204a1fc8 RDI: 0000000000000006
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004e2cb8
R13: 00000000ffffffff R14: 0000000020fbdff8 R15: 0000000000000000
Code: ff ff 48 89 95 58 ff ff ff 89 8d 70 ff ff ff e8 fb 70 5e fd 48 8b 95 58 ff ff ff 8b 8d 70 ff ff ff e9 04 e3 ff ff e8 74 4c 29 fd <0f> 0b be 02 00 00 00 4c 89 f7 e8 15 72 5e fd e9 6f e3 ff ff 48 
RIP: pfkey_xfrm_policy2msg+0x209c/0x22b0 net/key/af_key.c:2068 RSP: ffff8801c4f07418
---[ end trace b72eff746528d695 ]---