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-5,10.128.0.63' (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: [  143.913646] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2322 xfrm_state_fini+0x46a/0x620
[  143.914925] Kernel panic - not syncing: panic_on_warn set ...
[  143.914925] 
[  143.915896] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.15.0-rc1-mm1+ #29
[  143.916849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  143.918077] Workqueue: netns cleanup_net
[  143.918639] Call Trace:
[  143.918998]  dump_stack+0x194/0x257
[  143.919511]  ? arch_local_irq_restore+0x53/0x53
[  143.920137]  ? vsnprintf+0x1ed/0x1900
[  143.920651]  panic+0x1e4/0x41c
[  143.921083]  ? refcount_error_report+0x214/0x214
[  143.921716]  ? show_regs_print_info+0x65/0x65
[  143.922323]  ? __warn+0x1c1/0x200
[  143.922794]  ? xfrm_state_fini+0x46a/0x620
[  143.923372]  __warn+0x1dc/0x200
[  143.923815]  ? xfrm_state_fini+0x46a/0x620
[  143.924383]  report_bug+0x211/0x2d0
[  143.924876]  fixup_bug.part.11+0x37/0x80
[  143.925425]  do_error_trap+0x2d7/0x3e0
[  143.925951]  ? math_error+0x400/0x400
[  143.926464]  ? __local_bh_enable_ip+0x121/0x230
[  143.927119]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  143.927801]  ? xfrm_state_flush+0x557/0x630
[  143.928422]  ? trace_hardirqs_on+0xd/0x10
[  143.928980]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[  143.929634]  do_invalid_op+0x1b/0x20
[  143.930137]  invalid_op+0x22/0x40
[  143.930604] RIP: 0010:xfrm_state_fini+0x46a/0x620
[  143.931247] RSP: 0018:ffff8801d9ce70f0 EFLAGS: 00010293
[  143.931991] RAX: ffff8801d9cdc580 RBX: ffff8801cb2ea040 RCX: ffffffff8463e56a
[  143.932962] RDX: 0000000000000000 RSI: 1ffff1003b39b9d1 RDI: ffffed003b39ce10
[  143.934858] RBP: ffff8801d9ce7248 R08: 1ffff1003b39cda4 R09: 0000000000000000
[  143.942096] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39ce20
[  143.949335] R13: ffff8801d9ce7220 R14: 1ffff1003b39ce24 R15: ffff8801cb2eb500
[  143.956583]  ? xfrm_state_fini+0x46a/0x620
[  143.960793]  ? xfrm_state_init+0x4a0/0x4a0
[  143.965006]  ? mark_held_locks+0xb2/0x100
[  143.969123]  ? kfree+0xe4/0x250
[  143.972368]  ? xfrm_sysctl_fini+0x63/0x80
[  143.976483]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  143.981468]  ? trace_hardirqs_on+0xd/0x10
[  143.985589]  ? xfrm_policy_fini+0x550/0x550
[  143.989877]  xfrm_net_exit+0x25/0x30
[  143.993560]  ops_exit_list.isra.6+0xae/0x150
[  143.997941]  cleanup_net+0x5c7/0xb60
[  144.001627]  ? unregister_pernet_device+0x80/0x80
[  144.006450]  ? find_held_lock+0x39/0x1d0
[  144.010487]  ? check_noncircular+0x20/0x20
[  144.014702]  ? process_one_work+0xb2f/0x1bc0
[  144.019091]  ? __lock_is_held+0xbc/0x140
[  144.023142]  process_one_work+0xbfd/0x1bc0
[  144.027361]  ? pwq_dec_nr_in_flight+0x450/0x450
[  144.031999]  ? finish_task_switch+0x1f6/0x740
[  144.036488]  ? __sched_text_start+0x8/0x8
[  144.040605]  ? lock_downgrade+0x980/0x980
[  144.044724]  ? __wake_up_common_lock+0x190/0x310
[  144.049459]  ? find_held_lock+0x39/0x1d0
[  144.053500]  ? lock_acquire+0x1d5/0x580
[  144.057443]  ? worker_thread+0x4a3/0x1990
[  144.061566]  ? lock_release+0xda0/0xda0
[  144.065506]  ? worker_pool_assign_id+0x1b0/0x1b0
[  144.070231]  ? do_raw_spin_trylock+0x190/0x190
[  144.074797]  worker_thread+0x223/0x1990
[  144.078788]  ? process_one_work+0x1bc0/0x1bc0
[  144.083260]  ? _raw_spin_unlock_irq+0x27/0x70
[  144.087727]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  144.092709]  ? trace_hardirqs_on+0xd/0x10
[  144.096827]  ? mmdrop+0x18/0x30
[  144.100074]  ? finish_task_switch+0x1f6/0x740
[  144.104538]  ? copy_overflow+0x20/0x20
[  144.108413]  ? __schedule+0x8f3/0x2060
[  144.112271]  ? check_noncircular+0x20/0x20
[  144.116484]  ? find_held_lock+0x39/0x1d0
[  144.120530]  ? find_held_lock+0x39/0x1d0
[  144.124567]  ? lock_downgrade+0x980/0x980
[  144.128684]  ? default_wake_function+0x30/0x50
[  144.133243]  ? __schedule+0x2060/0x2060
[  144.137184]  ? do_wait_intr+0x3e0/0x3e0
[  144.141126]  ? do_raw_spin_trylock+0x190/0x190
[  144.145675]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[  144.150746]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  144.155726]  ? trace_hardirqs_on+0xd/0x10
[  144.159838]  ? __kthread_parkme+0x175/0x240
[  144.164131]  kthread+0x37a/0x440
[  144.167464]  ? process_one_work+0x1bc0/0x1bc0
[  144.171921]  ? kthread_stop+0x7b0/0x7b0
[  144.175861]  ret_from_fork+0x24/0x30
[  144.179803] Dumping ftrace buffer:
[  144.183376]    (ftrace buffer empty)
[  144.187052] Kernel Offset: disabled
[  144.190650] Rebooting in 86400 seconds..