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-1,10.128.0.38' (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: [   18.487161] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620
[   18.488417] Kernel panic - not syncing: panic_on_warn set ...
[   18.488417] 
[   18.489388] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.14.0+ #187
[   18.490274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   18.491498] Workqueue: netns cleanup_net
[   18.492041] Call Trace:
[   18.492400]  dump_stack+0x194/0x257
[   18.492910]  ? arch_local_irq_restore+0x53/0x53
[   18.493536]  ? vsnprintf+0x1ed/0x1900
[   18.494060]  panic+0x1e4/0x41c
[   18.494501]  ? refcount_error_report+0x214/0x214
[   18.495135]  ? show_regs_print_info+0x65/0x65
[   18.495739]  ? __warn+0x1c1/0x200
[   18.496210]  ? xfrm_state_fini+0x46a/0x620
[   18.496779]  __warn+0x1dc/0x200
[   18.497223]  ? xfrm_state_fini+0x46a/0x620
[   18.497792]  report_bug+0x211/0x2d0
[   18.498288]  fixup_bug.part.11+0x37/0x80
[   18.498862]  do_error_trap+0x2d7/0x3e0
[   18.499387]  ? math_error+0x400/0x400
[   18.499898]  ? __local_bh_enable_ip+0x121/0x230
[   18.500523]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   18.501187]  ? xfrm_state_flush+0x557/0x630
[   18.501778]  ? trace_hardirqs_on+0xd/0x10
[   18.502339]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   18.502989]  do_invalid_op+0x1b/0x20
[   18.503510]  invalid_op+0x18/0x20
[   18.503997] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   18.504636] RSP: 0018:ffff8801d9ce70f0 EFLAGS: 00010293
[   18.505345] RAX: ffff8801d9cde580 RBX: ffff8801ccf50040 RCX: ffffffff845cb0fa
[   18.506298] RDX: 0000000000000000 RSI: 1ffff1003b39bdd1 RDI: ffffed003b39ce10
[   18.507250] RBP: ffff8801d9ce7248 R08: 1ffff1003b39cda4 R09: 0000000000000000
[   18.514462] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39ce20
[   18.521699] R13: ffff8801d9ce7220 R14: 1ffff1003b39ce24 R15: ffff8801ccf51500
[   18.528952]  ? xfrm_state_fini+0x46a/0x620
[   18.533165]  ? xfrm_state_init+0x4a0/0x4a0
[   18.537376]  ? mark_held_locks+0xb2/0x100
[   18.541493]  ? kfree+0xe4/0x250
[   18.544739]  ? xfrm_sysctl_fini+0x63/0x80
[   18.548861]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   18.553845]  ? trace_hardirqs_on+0xd/0x10
[   18.557963]  ? xfrm_policy_fini+0x550/0x550
[   18.562259]  xfrm_net_exit+0x25/0x30
[   18.565940]  ops_exit_list.isra.6+0xae/0x150
[   18.570319]  cleanup_net+0x5c7/0xb60
[   18.574003]  ? unregister_pernet_device+0x80/0x80
[   18.578832]  ? find_held_lock+0x39/0x1d0
[   18.582866]  ? check_noncircular+0x20/0x20
[   18.587078]  ? process_one_work+0xb2f/0x1be0
[   18.591465]  ? __lock_is_held+0xbc/0x140
[   18.595505]  process_one_work+0xbfd/0x1be0
[   18.599720]  ? pwq_dec_nr_in_flight+0x450/0x450
[   18.604354]  ? finish_task_switch+0x1d3/0x740
[   18.608814]  ? finish_task_switch+0x1aa/0x740
[   18.613294]  ? find_held_lock+0x39/0x1d0
[   18.617330]  ? __sched_text_start+0x8/0x8
[   18.621445]  ? lock_downgrade+0x980/0x980
[   18.625564]  ? __wake_up_common_lock+0x190/0x310
[   18.630296]  ? find_held_lock+0x39/0x1d0
[   18.634336]  ? lock_acquire+0x1d5/0x580
[   18.638276]  ? worker_thread+0x4a3/0x1990
[   18.642399]  ? lock_release+0xda0/0xda0
[   18.646341]  ? worker_pool_assign_id+0x1b0/0x1b0
[   18.651068]  ? do_raw_spin_trylock+0x190/0x190
[   18.655633]  worker_thread+0x223/0x1990
[   18.659594]  ? process_one_work+0x1be0/0x1be0
[   18.664062]  ? _raw_spin_unlock_irq+0x27/0x70
[   18.668529]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   18.673512]  ? trace_hardirqs_on+0xd/0x10
[   18.677629]  ? _raw_spin_unlock_irq+0x27/0x70
[   18.682098]  ? finish_task_switch+0x1d3/0x740
[   18.686566]  ? finish_task_switch+0x1aa/0x740
[   18.691032]  ? copy_overflow+0x20/0x20
[   18.694898]  ? __schedule+0x8f3/0x2060
[   18.698755]  ? check_noncircular+0x20/0x20
[   18.702975]  ? find_held_lock+0x39/0x1d0
[   18.707017]  ? find_held_lock+0x39/0x1d0
[   18.711056]  ? lock_downgrade+0x980/0x980
[   18.715174]  ? default_wake_function+0x30/0x50
[   18.719733]  ? __schedule+0x2060/0x2060
[   18.723675]  ? do_wait_intr+0x3e0/0x3e0
[   18.727621]  ? do_raw_spin_trylock+0x190/0x190
[   18.732178]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   18.737249]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   18.742232]  ? trace_hardirqs_on+0xd/0x10
[   18.746348]  ? __kthread_parkme+0x175/0x240
[   18.750639]  kthread+0x37a/0x440
[   18.753973]  ? process_one_work+0x1be0/0x1be0
[   18.758431]  ? kthread_stop+0x7b0/0x7b0
[   18.762374]  ret_from_fork+0x24/0x30
[   18.766736] Dumping ftrace buffer:
[   18.770338]    (ftrace buffer empty)
[   18.774020] Kernel Offset: disabled
[   18.777614] Rebooting in 86400 seconds..