INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-net-kasan-gce-1,10.128.0.24' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
executing program
syzkaller login: [   31.162347] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies.  Check SNMP counters.
executing program
[   31.276773] ------------[ cut here ]------------
[   31.281660] kernel BUG at net/key/af_key.c:2068!
[   31.286426] invalid opcode: 0000 [#1] SMP KASAN
[   31.291064] Dumping ftrace buffer:
[   31.294566]    (ftrace buffer empty)
[   31.298244] Modules linked in:
[   31.301407] CPU: 1 PID: 3048 Comm: syzkaller895162 Not tainted 4.13.0-rc6+ #24
[   31.308734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.318058] task: ffff8801cf4b2540 task.stack: ffff8801d1468000
[   31.324092] RIP: 0010:pfkey_xfrm_policy2msg+0x209c/0x22b0
[   31.329592] RSP: 0018:ffff8801d146f4b0 EFLAGS: 00010297
[   31.334919] RAX: ffff8801cf4b2540 RBX: ffff8801d14766ec RCX: 0000000000000000
[   31.342155] RDX: 0000000000000000 RSI: 000000000000204e RDI: ffff8801d147659c
[   31.349392] RBP: ffff8801d146f588 R08: 0000000000000001 R09: ffff8801d1476940
[   31.356628] R10: 000000000000001b R11: ffffed003a28ed42 R12: ffff8801d14765b8
[   31.363865] R13: ffff8801d14764c0 R14: 0000000000000008 R15: 0000000000000001
[   31.371103] FS:  00007ff4bc669700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   31.379305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.385153] CR2: 0000000020002ff0 CR3: 00000001d1881000 CR4: 00000000001406e0
[   31.392391] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.399628] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.406865] Call Trace:
[   31.409434]  ? pfkey_sockaddr_fill+0x340/0x340
[   31.413986]  ? check_noncircular+0x20/0x20
[   31.418190]  ? pfkey_xfrm_policy2msg_size+0x1d3/0x230
[   31.423352]  dump_sp+0x14f/0x510
[   31.426689]  ? pfkey_flush+0x3c0/0x3c0
[   31.430546]  ? xfrm_policy_walk+0x192/0xa30
[   31.434846]  xfrm_policy_walk+0x2f1/0xa30
[   31.438964]  ? pfkey_flush+0x3c0/0x3c0
[   31.442818]  ? xfrm_audit_policy_delete+0x1f0/0x1f0
[   31.447801]  ? __kfree_skb+0x20/0x20
[   31.451481]  ? lock_release+0xa40/0xa40
[   31.455427]  ? __lock_is_held+0xb6/0x140
[   31.459463]  ? __mutex_unlock_slowpath+0xe9/0xac0
[   31.464282]  ? wait_for_completion+0x730/0x730
[   31.468844]  ? pfkey_acquire+0x220/0x220
[   31.472874]  ? pfkey_broadcast_one+0x6f0/0x6f0
[   31.477429]  pfkey_dump_sp+0x42/0x50
[   31.481110]  pfkey_do_dump+0xaa/0x3f0
[   31.484885]  ? xfrm_policy_walk_init+0x69/0x1c0
[   31.489523]  ? dump_sa+0x5e0/0x5e0
[   31.493033]  pfkey_spddump+0x1a0/0x210
[   31.496885]  ? pfkey_recvmsg+0x710/0x710
[   31.500927]  pfkey_process+0x60b/0x720
[   31.504785]  ? pfkey_send_new_mapping+0x11b0/0x11b0
[   31.509768]  ? kasan_check_write+0x14/0x20
[   31.513981]  pfkey_sendmsg+0x4d6/0x9f0
[   31.517835]  ? pfkey_spdget+0xb00/0xb00
[   31.521780]  ? selinux_socket_sendmsg+0x36/0x40
[   31.526419]  ? security_socket_sendmsg+0x89/0xb0
[   31.531147]  ? pfkey_spdget+0xb00/0xb00
[   31.535090]  sock_sendmsg+0xca/0x110
[   31.538771]  sock_write_iter+0x31a/0x5d0
[   31.542806]  ? check_noncircular+0x20/0x20
[   31.547019]  ? sock_sendmsg+0x110/0x110
[   31.550967]  ? iov_iter_init+0xaf/0x1d0
[   31.554914]  __vfs_write+0x684/0x970
[   31.558597]  ? default_llseek+0x290/0x290
[   31.562715]  ? selinux_capset+0x100/0x100
[   31.566858]  ? selinux_file_permission+0x82/0x460
[   31.571673]  ? rw_verify_area+0xe5/0x2b0
[   31.575701]  ? __fdget_raw+0x20/0x20
[   31.579386]  vfs_write+0x189/0x510
[   31.582903]  SyS_write+0xef/0x220
[   31.586323]  ? SyS_read+0x220/0x220
[   31.589920]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.594912]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   31.599659]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   31.604404] RIP: 0033:0x44aca9
[   31.607600] RSP: 002b:00007ff4bc668d98 EFLAGS: 00000297 ORIG_RAX: 0000000000000001
[   31.615286] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044aca9
[   31.622524] RDX: 0000000000000010 RSI: 0000000020002ff0 RDI: 0000000000000008
[   31.629761] RBP: 0000000000000086 R08: 00007ff4bc669700 R09: 0000000000000000
[   31.636998] R10: 00007ff4bc669700 R11: 0000000000000297 R12: 0000000000000000
[   31.644245] R13: 00007ffe7d8f783f R14: 00007ff4bc6699c0 R15: 0000000000000000
[   31.651489] Code: ff ff 48 89 95 58 ff ff ff 89 8d 70 ff ff ff e8 6b 1e 61 fd 48 8b 95 58 ff ff ff 8b 8d 70 ff ff ff e9 04 e3 ff ff e8 84 49 2d fd <0f> 0b be 02 00 00 00 4c 89 f7 e8 85 1f 61 fd e9 6f e3 ff ff 48 
[   31.670575] RIP: pfkey_xfrm_policy2msg+0x209c/0x22b0 RSP: ffff8801d146f4b0
[   31.677615] ---[ end trace 4987e0a4c871651a ]---
[   31.682350] Kernel panic - not syncing: Fatal exception in interrupt
[   31.688835] Dumping ftrace buffer:
[   31.692338]    (ftrace buffer empty)
[   31.696014] Kernel Offset: disabled
[   31.699607] Rebooting in 86400 seconds..