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-mmots-kasan-gce-5,10.128.15.199' (ECDSA) to the list of known hosts.
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
executing program
unlink(./0/file0/fb) failed (errno 1)
syzkaller login: [   57.354229] WARNING: CPU: 0 PID: 258 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620
[   57.355567] Kernel panic - not syncing: panic_on_warn set ...
[   57.355567] 
[   57.356538] CPU: 0 PID: 258 Comm: kworker/u4:4 Not tainted 4.14.0-mm1+ #24
[   57.357559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.358790] Workqueue: netns cleanup_net
[   57.359348] Call Trace:
[   57.359709]  dump_stack+0x194/0x257
[   57.360203]  ? arch_local_irq_restore+0x53/0x53
[   57.360833]  ? vsnprintf+0x1ed/0x1900
[   57.361354]  panic+0x1e4/0x41c
[   57.361860]  ? refcount_error_report+0x214/0x214
[   57.362537]  ? show_regs_print_info+0x65/0x65
[   57.363145]  ? __warn+0x1c1/0x200
[   57.363618]  ? xfrm_state_fini+0x46a/0x620
[   57.364205]  __warn+0x1dc/0x200
[   57.364649]  ? xfrm_state_fini+0x46a/0x620
[   57.365220]  report_bug+0x211/0x2d0
[   57.365717]  fixup_bug.part.11+0x37/0x80
[   57.366263]  do_error_trap+0x2d7/0x3e0
[   57.366789]  ? math_error+0x400/0x400
[   57.367299]  ? __local_bh_enable_ip+0x121/0x230
[   57.367924]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   57.368589]  ? xfrm_state_flush+0x557/0x630
[   57.369228]  ? trace_hardirqs_on+0xd/0x10
[   57.369788]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   57.370457]  do_invalid_op+0x1b/0x20
[   57.370977]  invalid_op+0x18/0x20
[   57.371446] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   57.372090] RSP: 0018:ffff8801d91f70f0 EFLAGS: 00010293
[   57.372985] RAX: ffff8801d91ee200 RBX: ffff8801cca56040 RCX: ffffffff8460557a
[   57.373954] RDX: 0000000000000000 RSI: 1ffff1003b23dd61 RDI: ffffed003b23ee10
[   57.374925] RBP: ffff8801d91f7248 R08: 1ffff1003b23eda4 R09: 0000000000000000
[   57.382164] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b23ee20
[   57.389401] R13: ffff8801d91f7220 R14: 1ffff1003b23ee24 R15: ffff8801cca57500
[   57.396661]  ? xfrm_state_fini+0x46a/0x620
[   57.400874]  ? xfrm_state_init+0x4a0/0x4a0
[   57.405086]  ? mark_held_locks+0xb2/0x100
[   57.409212]  ? kfree+0xe4/0x250
[   57.412462]  ? xfrm_sysctl_fini+0x63/0x80
[   57.416584]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   57.421572]  ? trace_hardirqs_on+0xd/0x10
[   57.425695]  ? xfrm_policy_fini+0x550/0x550
[   57.429993]  xfrm_net_exit+0x25/0x30
[   57.433674]  ops_exit_list.isra.6+0xae/0x150
[   57.438058]  cleanup_net+0x5c7/0xb60
[   57.441745]  ? unregister_pernet_device+0x80/0x80
[   57.446564]  ? find_held_lock+0x39/0x1d0
[   57.450600]  ? check_noncircular+0x20/0x20
[   57.454815]  ? process_one_work+0xb2f/0x1be0
[   57.459209]  ? __lock_is_held+0xbc/0x140
[   57.463250]  process_one_work+0xbfd/0x1be0
[   57.467467]  ? pwq_dec_nr_in_flight+0x450/0x450
[   57.472102]  ? finish_task_switch+0x1f6/0x740
[   57.476599]  ? __sched_text_start+0x8/0x8
[   57.480719]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   57.485879]  ? select_task_rq_fair+0x2770/0x2770
[   57.490602]  ? check_noncircular+0x20/0x20
[   57.494809]  ? find_held_lock+0x39/0x1d0
[   57.498928]  ? lock_acquire+0x1d5/0x580
[   57.502874]  ? worker_thread+0x4a3/0x1990
[   57.506994]  ? lock_release+0xda0/0xda0
[   57.511693]  ? do_raw_spin_trylock+0x190/0x190
[   57.516259]  worker_thread+0x223/0x1990
[   57.520220]  ? process_one_work+0x1be0/0x1be0
[   57.524682]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   57.529669]  ? account_kernel_stack+0x155/0x1f0
[   57.534310]  ? put_task_stack+0x116/0x270
[   57.538430]  ? finish_task_switch+0x4eb/0x740
[   57.543330]  ? copy_overflow+0x20/0x20
[   57.547197]  ? __schedule+0x8f3/0x2060
[   57.551049]  ? check_noncircular+0x20/0x20
[   57.555264]  ? find_held_lock+0x39/0x1d0
[   57.559743]  ? find_held_lock+0x39/0x1d0
[   57.563783]  ? lock_downgrade+0x980/0x980
[   57.567900]  ? default_wake_function+0x30/0x50
[   57.572457]  ? __schedule+0x2060/0x2060
[   57.576407]  ? do_wait_intr+0x3e0/0x3e0
[   57.580351]  ? do_raw_spin_trylock+0x190/0x190
[   57.584903]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   57.589982]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   57.594967]  ? trace_hardirqs_on+0xd/0x10
[   57.599083]  ? __kthread_parkme+0x175/0x240
[   57.603378]  kthread+0x37a/0x440
[   57.606716]  ? process_one_work+0x1be0/0x1be0
[   57.611178]  ? kthread_stop+0x7b0/0x7b0
[   57.615133]  ret_from_fork+0x24/0x30
[   57.619418] Dumping ftrace buffer:
[   57.623008]    (ftrace buffer empty)
[   57.626688] Kernel Offset: disabled
[   57.630283] Rebooting in 86400 seconds..