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-386-3,10.128.0.14' (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: [   22.449610] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2322 xfrm_state_fini+0x46a/0x620
[   22.458307] Kernel panic - not syncing: panic_on_warn set ...
[   22.458307] 
[   22.465639] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.15.0-rc1+ #115
[   22.472620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   22.481952] Workqueue: netns cleanup_net
[   22.485984] Call Trace:
[   22.488542]  dump_stack+0x194/0x257
[   22.492142]  ? arch_local_irq_restore+0x53/0x53
[   22.496787]  ? vsnprintf+0x1ed/0x1900
[   22.500563]  panic+0x1e4/0x41c
[   22.503725]  ? refcount_error_report+0x214/0x214
[   22.508448]  ? show_regs_print_info+0x65/0x65
[   22.512921]  ? __warn+0x1c1/0x200
[   22.516346]  ? xfrm_state_fini+0x46a/0x620
[   22.520545]  __warn+0x1dc/0x200
[   22.523795]  ? xfrm_state_fini+0x46a/0x620
[   22.528003]  report_bug+0x211/0x2d0
[   22.531606]  fixup_bug.part.11+0x37/0x80
[   22.535637]  do_error_trap+0x2d7/0x3e0
[   22.539496]  ? math_error+0x400/0x400
[   22.543268]  ? __local_bh_enable_ip+0x121/0x230
[   22.547908]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.552892]  ? xfrm_state_flush+0x557/0x630
[   22.557179]  ? trace_hardirqs_on+0xd/0x10
[   22.561310]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   22.566127]  do_invalid_op+0x1b/0x20
[   22.569812]  invalid_op+0x18/0x20
[   22.573235] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   22.578042] RSP: 0018:ffff8801d9ce70f0 EFLAGS: 00010293
[   22.583374] RAX: ffff8801d9cda580 RBX: ffff8801cb9fe040 RCX: ffffffff8463600a
[   22.590613] RDX: 0000000000000000 RSI: 1ffff1003b39b5d1 RDI: ffffed003b39ce10
[   22.597850] RBP: ffff8801d9ce7248 R08: 1ffff1003b39cda4 R09: 0000000000000000
[   22.605087] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39ce20
[   22.612325] R13: ffff8801d9ce7220 R14: 1ffff1003b39ce24 R15: ffff8801cb9ff500
[   22.619578]  ? xfrm_state_fini+0x46a/0x620
[   22.623792]  ? xfrm_state_init+0x4a0/0x4a0
[   22.628006]  ? mark_held_locks+0xb2/0x100
[   22.632132]  ? kfree+0xe4/0x250
[   22.635388]  ? xfrm_sysctl_fini+0x63/0x80
[   22.639504]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.644496]  ? trace_hardirqs_on+0xd/0x10
[   22.648615]  ? xfrm_policy_fini+0x550/0x550
[   22.652914]  xfrm_net_exit+0x25/0x30
[   22.656603]  ops_exit_list.isra.6+0xae/0x150
[   22.660983]  cleanup_net+0x5c7/0xb60
[   22.664670]  ? unregister_pernet_device+0x80/0x80
[   22.669489]  ? find_held_lock+0x39/0x1d0
[   22.673529]  ? check_noncircular+0x20/0x20
[   22.677747]  ? process_one_work+0xb2f/0x1be0
[   22.682137]  ? __lock_is_held+0xbc/0x140
[   22.686184]  process_one_work+0xbfd/0x1be0
[   22.690398]  ? pwq_dec_nr_in_flight+0x450/0x450
[   22.695035]  ? finish_task_switch+0x1d3/0x740
[   22.699498]  ? finish_task_switch+0x1aa/0x740
[   22.703994]  ? __sched_text_start+0x8/0x8
[   22.708120]  ? lock_downgrade+0x980/0x980
[   22.712245]  ? __wake_up_common_lock+0x190/0x310
[   22.716980]  ? find_held_lock+0x39/0x1d0
[   22.721023]  ? lock_acquire+0x1d5/0x580
[   22.724964]  ? worker_thread+0x4a3/0x1990
[   22.729087]  ? lock_release+0xda0/0xda0
[   22.733032]  ? worker_pool_assign_id+0x1b0/0x1b0
[   22.737759]  ? do_raw_spin_trylock+0x190/0x190
[   22.742331]  worker_thread+0x223/0x1990
[   22.746295]  ? process_one_work+0x1be0/0x1be0
[   22.750765]  ? _raw_spin_unlock_irq+0x27/0x70
[   22.755230]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.760241]  ? trace_hardirqs_on+0xd/0x10
[   22.764363]  ? finish_task_switch+0x1d3/0x740
[   22.768825]  ? finish_task_switch+0x1aa/0x740
[   22.773294]  ? copy_overflow+0x20/0x20
[   22.777164]  ? __schedule+0x8f3/0x2060
[   22.781019]  ? check_noncircular+0x20/0x20
[   22.785232]  ? find_held_lock+0x39/0x1d0
[   22.789282]  ? find_held_lock+0x39/0x1d0
[   22.793329]  ? lock_downgrade+0x980/0x980
[   22.797447]  ? default_wake_function+0x30/0x50
[   22.802008]  ? __schedule+0x2060/0x2060
[   22.805953]  ? do_wait_intr+0x3e0/0x3e0
[   22.809902]  ? do_raw_spin_trylock+0x190/0x190
[   22.814456]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   22.819530]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.824517]  ? trace_hardirqs_on+0xd/0x10
[   22.828636]  ? __kthread_parkme+0x175/0x240
[   22.832933]  kthread+0x37a/0x440
[   22.836270]  ? process_one_work+0x1be0/0x1be0
[   22.840742]  ? kthread_stop+0x7b0/0x7b0
[   22.844687]  ret_from_fork+0x24/0x30
[   22.848979] Dumping ftrace buffer:
[   22.852604]    (ftrace buffer empty)
[   22.856284] Kernel Offset: disabled
[   22.859883] Rebooting in 86400 seconds..