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-7,10.128.15.198' (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: [   45.964055] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620
[   45.965336] Kernel panic - not syncing: panic_on_warn set ...
[   45.965336] 
[   45.966307] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.14.0+ #189
[   45.967192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.968419] Workqueue: netns cleanup_net
[   45.968977] Call Trace:
[   45.969336]  dump_stack+0x194/0x257
[   45.969826]  ? arch_local_irq_restore+0x53/0x53
[   45.970454]  ? vsnprintf+0x1ed/0x1900
[   45.970969]  panic+0x1e4/0x41c
[   45.971400]  ? refcount_error_report+0x214/0x214
[   45.972045]  ? show_regs_print_info+0x65/0x65
[   45.972650]  ? __warn+0x1c1/0x200
[   45.973121]  ? xfrm_state_fini+0x46a/0x620
[   45.973684]  __warn+0x1dc/0x200
[   45.974128]  ? xfrm_state_fini+0x46a/0x620
[   45.974701]  report_bug+0x211/0x2d0
[   45.975194]  fixup_bug.part.11+0x37/0x80
[   45.975759]  do_error_trap+0x2d7/0x3e0
[   45.976284]  ? math_error+0x400/0x400
[   45.976797]  ? __local_bh_enable_ip+0x121/0x230
[   45.977421]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   45.978090]  ? xfrm_state_flush+0x557/0x630
[   45.978665]  ? trace_hardirqs_on+0xd/0x10
[   45.979234]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   45.979883]  do_invalid_op+0x1b/0x20
[   45.980382]  invalid_op+0x18/0x20
[   45.980849] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   45.981490] RSP: 0018:ffff8801d9ce70f0 EFLAGS: 00010293
[   45.982203] RAX: ffff8801d9cde580 RBX: ffff8801cdf10040 RCX: ffffffff846010fa
[   45.983153] RDX: 0000000000000000 RSI: 1ffff1003b39bdd1 RDI: ffffed003b39ce10
[   45.984105] RBP: ffff8801d9ce7248 R08: 1ffff1003b39cda4 R09: 0000000000000000
[   45.985057] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39ce20
[   45.992290] R13: ffff8801d9ce7220 R14: 1ffff1003b39ce24 R15: ffff8801cdf11500
[   45.999536]  ? xfrm_state_fini+0x46a/0x620
[   46.003746]  ? xfrm_state_init+0x4a0/0x4a0
[   46.007958]  ? mark_held_locks+0xb2/0x100
[   46.012080]  ? kfree+0xe4/0x250
[   46.015327]  ? xfrm_sysctl_fini+0x63/0x80
[   46.019444]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   46.024429]  ? trace_hardirqs_on+0xd/0x10
[   46.028549]  ? xfrm_policy_fini+0x550/0x550
[   46.032837]  xfrm_net_exit+0x25/0x30
[   46.036528]  ops_exit_list.isra.6+0xae/0x150
[   46.040908]  cleanup_net+0x5c7/0xb60
[   46.044601]  ? unregister_pernet_device+0x80/0x80
[   46.049418]  ? find_held_lock+0x39/0x1d0
[   46.053450]  ? check_noncircular+0x20/0x20
[   46.057664]  ? process_one_work+0xb2f/0x1be0
[   46.062049]  ? __lock_is_held+0xbc/0x140
[   46.066088]  process_one_work+0xbfd/0x1be0
[   46.070302]  ? pwq_dec_nr_in_flight+0x450/0x450
[   46.074939]  ? finish_task_switch+0x1d3/0x740
[   46.079399]  ? finish_task_switch+0x1aa/0x740
[   46.083878]  ? find_held_lock+0x39/0x1d0
[   46.087910]  ? __sched_text_start+0x8/0x8
[   46.092025]  ? lock_downgrade+0x980/0x980
[   46.096143]  ? __wake_up_common_lock+0x190/0x310
[   46.100880]  ? find_held_lock+0x39/0x1d0
[   46.104918]  ? lock_acquire+0x1d5/0x580
[   46.108856]  ? worker_thread+0x4a3/0x1990
[   46.112977]  ? lock_release+0xda0/0xda0
[   46.116919]  ? worker_pool_assign_id+0x1b0/0x1b0
[   46.121648]  ? do_raw_spin_trylock+0x190/0x190
[   46.126209]  worker_thread+0x223/0x1990
[   46.130169]  ? process_one_work+0x1be0/0x1be0
[   46.134638]  ? _raw_spin_unlock_irq+0x27/0x70
[   46.139101]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   46.144258]  ? trace_hardirqs_on+0xd/0x10
[   46.148374]  ? finish_task_switch+0x1d3/0x740
[   46.152834]  ? finish_task_switch+0x1aa/0x740
[   46.157297]  ? copy_overflow+0x20/0x20
[   46.161161]  ? __schedule+0x8f3/0x2060
[   46.165013]  ? check_noncircular+0x20/0x20
[   46.169226]  ? find_held_lock+0x39/0x1d0
[   46.173258]  ? find_held_lock+0x39/0x1d0
[   46.177293]  ? lock_downgrade+0x980/0x980
[   46.181409]  ? default_wake_function+0x30/0x50
[   46.185971]  ? __schedule+0x2060/0x2060
[   46.189920]  ? do_wait_intr+0x3e0/0x3e0
[   46.193866]  ? do_raw_spin_trylock+0x190/0x190
[   46.198418]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   46.203491]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   46.208480]  ? trace_hardirqs_on+0xd/0x10
[   46.212594]  ? __kthread_parkme+0x175/0x240
[   46.216885]  kthread+0x37a/0x440
[   46.220223]  ? process_one_work+0x1be0/0x1be0
[   46.224682]  ? kthread_stop+0x7b0/0x7b0
[   46.228627]  ret_from_fork+0x24/0x30
[   46.232571] Dumping ftrace buffer:
[   46.236264]    (ftrace buffer empty)
[   46.239957] Kernel Offset: disabled
[   46.243553] Rebooting in 86400 seconds..