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-kasan-gce-386-0,10.128.15.231' (ECDSA) to the list of known hosts.
2017/12/02 07:40:17 parsed 1 programs
2017/12/02 07:40:17 executed programs: 0
syzkaller login: [   87.723999] WARNING: CPU: 1 PID: 142 at net/xfrm/xfrm_state.c:2322 xfrm_state_fini+0x46a/0x620
[   87.725246] Kernel panic - not syncing: panic_on_warn set ...
[   87.725246] 
[   87.726214] CPU: 1 PID: 142 Comm: kworker/u4:3 Not tainted 4.15.0-rc1+ #114
[   87.727146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   87.728372] Workqueue: netns cleanup_net
[   87.728916] Call Trace:
[   87.729271]  dump_stack+0x194/0x257
[   87.729764]  ? arch_local_irq_restore+0x53/0x53
[   87.730390]  ? vsnprintf+0x1ed/0x1900
[   87.730908]  panic+0x1e4/0x41c
[   87.731340]  ? refcount_error_report+0x214/0x214
[   87.731973]  ? show_regs_print_info+0x65/0x65
[   87.732578]  ? __warn+0x1c1/0x200
[   87.733050]  ? xfrm_state_fini+0x46a/0x620
[   87.733668]  __warn+0x1dc/0x200
[   87.734114]  ? xfrm_state_fini+0x46a/0x620
[   87.734685]  report_bug+0x211/0x2d0
[   87.735179]  fixup_bug.part.11+0x37/0x80
[   87.735725]  do_error_trap+0x2d7/0x3e0
[   87.736265]  ? math_error+0x400/0x400
[   87.736775]  ? __local_bh_enable_ip+0x121/0x230
[   87.737399]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   87.738063]  ? xfrm_state_flush+0x557/0x630
[   87.738641]  ? trace_hardirqs_on+0xd/0x10
[   87.739202]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   87.739850]  do_invalid_op+0x1b/0x20
[   87.740372]  invalid_op+0x18/0x20
[   87.740836] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   87.741493] RSP: 0018:ffff8801d9bcf0f0 EFLAGS: 00010293
[   87.742223] RAX: ffff8801d9bc4180 RBX: ffff8801cb686040 RCX: ffffffff8463600a
[   87.743207] RDX: 0000000000000000 RSI: 1ffff1003b378951 RDI: ffffed003b379e10
[   87.744403] RBP: ffff8801d9bcf248 R08: 1ffff1003b379da4 R09: 0000000000000000
[   87.751639] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b379e20
[   87.758873] R13: ffff8801d9bcf220 R14: 1ffff1003b379e24 R15: ffff8801cb687500
[   87.766121]  ? xfrm_state_fini+0x46a/0x620
[   87.770328]  ? xfrm_state_init+0x4a0/0x4a0
[   87.774537]  ? mark_held_locks+0xb2/0x100
[   87.778659]  ? kfree+0xe4/0x250
[   87.781905]  ? xfrm_sysctl_fini+0x63/0x80
[   87.786017]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   87.790998]  ? trace_hardirqs_on+0xd/0x10
[   87.795116]  ? xfrm_policy_fini+0x550/0x550
[   87.799405]  xfrm_net_exit+0x25/0x30
[   87.803084]  ops_exit_list.isra.6+0xae/0x150
[   87.807460]  cleanup_net+0x5c7/0xb60
[   87.811145]  ? unregister_pernet_device+0x80/0x80
[   87.815960]  ? find_held_lock+0x39/0x1d0
[   87.819992]  ? check_noncircular+0x20/0x20
[   87.824383]  ? process_one_work+0xb2f/0x1be0
[   87.828768]  ? __lock_is_held+0xbc/0x140
[   87.832809]  process_one_work+0xbfd/0x1be0
[   87.837021]  ? pwq_dec_nr_in_flight+0x450/0x450
[   87.841657]  ? finish_task_switch+0x1d3/0x740
[   87.846115]  ? finish_task_switch+0x1aa/0x740
[   87.850603]  ? __sched_text_start+0x8/0x8
[   87.854721]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   87.859881]  ? select_task_rq_fair+0x2770/0x2770
[   87.864602]  ? check_noncircular+0x20/0x20
[   87.868810]  ? find_held_lock+0x39/0x1d0
[   87.872846]  ? lock_acquire+0x1d5/0x580
[   87.876784]  ? worker_thread+0x4a3/0x1990
[   87.880903]  ? lock_release+0xda0/0xda0
[   87.884843]  ? retint_kernel+0x10/0x10
[   87.888699]  ? do_raw_spin_trylock+0x190/0x190
[   87.893258]  worker_thread+0x223/0x1990
[   87.897217]  ? process_one_work+0x1be0/0x1be0
[   87.901681]  ? _raw_spin_unlock_irq+0x27/0x70
[   87.906146]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   87.911128]  ? trace_hardirqs_on+0xd/0x10
[   87.915240]  ? _raw_spin_unlock_irq+0x27/0x70
[   87.919701]  ? finish_task_switch+0x1d3/0x740
[   87.924163]  ? finish_task_switch+0x1aa/0x740
[   87.928627]  ? copy_overflow+0x20/0x20
[   87.932492]  ? __schedule+0x8f3/0x2060
[   87.936343]  ? check_noncircular+0x20/0x20
[   87.940562]  ? find_held_lock+0x39/0x1d0
[   87.944594]  ? find_held_lock+0x39/0x1d0
[   87.948630]  ? lock_downgrade+0x980/0x980
[   87.952746]  ? default_wake_function+0x30/0x50
[   87.957303]  ? __schedule+0x2060/0x2060
[   87.961240]  ? do_wait_intr+0x3e0/0x3e0
[   87.965188]  ? do_raw_spin_trylock+0x190/0x190
[   87.969738]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   87.974808]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   87.979797]  ? trace_hardirqs_on+0xd/0x10
[   87.983910]  ? __kthread_parkme+0x175/0x240
[   87.988200]  kthread+0x37a/0x440
[   87.991535]  ? process_one_work+0x1be0/0x1be0
[   87.995992]  ? kthread_stop+0x7b0/0x7b0
[   87.999932]  ret_from_fork+0x24/0x30
[   88.003851] Dumping ftrace buffer:
[   88.007427]    (ftrace buffer empty)
[   88.011106] Kernel Offset: disabled
[   88.014702] Rebooting in 86400 seconds..