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-next-kasan-gce-7,10.128.15.219' (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: [   28.882645] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620
[   28.883922] Kernel panic - not syncing: panic_on_warn set ...
[   28.883922] 
[   28.884889] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.14.0-next-20171120+ #46
[   28.885908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.887131] Workqueue: netns cleanup_net
[   28.887676] Call Trace:
[   28.888038]  dump_stack+0x194/0x257
[   28.888530]  ? arch_local_irq_restore+0x53/0x53
[   28.889155]  ? vsnprintf+0x1ed/0x1900
[   28.889671]  panic+0x1e4/0x41c
[   28.890105]  ? refcount_error_report+0x214/0x214
[   28.890737]  ? show_regs_print_info+0x65/0x65
[   28.891351]  ? __warn+0x1c1/0x200
[   28.891821]  ? xfrm_state_fini+0x46a/0x620
[   28.892387]  __warn+0x1dc/0x200
[   28.892833]  ? xfrm_state_fini+0x46a/0x620
[   28.893401]  report_bug+0x211/0x2d0
[   28.893898]  fixup_bug.part.10+0x37/0x80
[   28.894504]  do_error_trap+0x2d7/0x3e0
[   28.895029]  ? math_error+0x400/0x400
[   28.895538]  ? __local_bh_enable_ip+0x121/0x230
[   28.896165]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   28.896855]  ? xfrm_state_flush+0x557/0x630
[   28.897433]  ? trace_hardirqs_on+0xd/0x10
[   28.897990]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   28.898641]  do_invalid_op+0x1b/0x20
[   28.899139]  invalid_op+0x18/0x20
[   28.899602] RIP: 0010:xfrm_state_fini+0x46a/0x620
[   28.900245] RSP: 0018:ffff8801d9cef0f0 EFLAGS: 00010293
[   28.900955] RAX: ffff8801d9ce4580 RBX: ffff8801cc46e040 RCX: ffffffff845d057a
[   28.901905] RDX: 0000000000000000 RSI: 1ffff1003b39c9d1 RDI: ffffed003b39de10
[   28.903328] RBP: ffff8801d9cef248 R08: 1ffff1003b39dda4 R09: 0000000000000000
[   28.910563] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39de20
[   28.917800] R13: ffff8801d9cef220 R14: 1ffff1003b39de24 R15: ffff8801cc46f500
[   28.925056]  ? xfrm_state_fini+0x46a/0x620
[   28.929265]  ? xfrm_state_init+0x4a0/0x4a0
[   28.933476]  ? mark_held_locks+0xb2/0x100
[   28.937601]  ? kfree+0xe4/0x250
[   28.940851]  ? xfrm_sysctl_fini+0x63/0x80
[   28.944970]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   28.949957]  ? trace_hardirqs_on+0xd/0x10
[   28.954075]  ? xfrm_policy_fini+0x550/0x550
[   28.958366]  xfrm_net_exit+0x25/0x30
[   28.962046]  ops_exit_list.isra.6+0xae/0x150
[   28.966430]  cleanup_net+0x5c7/0xb60
[   28.970118]  ? unregister_pernet_device+0x80/0x80
[   28.974933]  ? find_held_lock+0x39/0x1d0
[   28.978967]  ? check_noncircular+0x20/0x20
[   28.983181]  ? process_one_work+0xb2f/0x1be0
[   28.987569]  ? __lock_is_held+0xbc/0x140
[   28.991611]  process_one_work+0xbfd/0x1be0
[   28.995826]  ? pwq_dec_nr_in_flight+0x450/0x450
[   29.000464]  ? finish_task_switch+0x1f6/0x740
[   29.004951]  ? __sched_text_start+0x8/0x8
[   29.009072]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   29.014232]  ? select_task_rq_fair+0x2770/0x2770
[   29.018955]  ? check_noncircular+0x20/0x20
[   29.023163]  ? find_held_lock+0x39/0x1d0
[   29.027205]  ? lock_acquire+0x1d5/0x580
[   29.031143]  ? worker_thread+0x4a3/0x1990
[   29.035266]  ? lock_release+0xda0/0xda0
[   29.039209]  ? worker_pool_assign_id+0x1b0/0x1b0
[   29.043933]  ? do_raw_spin_trylock+0x190/0x190
[   29.048494]  worker_thread+0x223/0x1990
[   29.052456]  ? process_one_work+0x1be0/0x1be0
[   29.056921]  ? _raw_spin_unlock_irq+0x27/0x70
[   29.061386]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   29.066371]  ? trace_hardirqs_on+0xd/0x10
[   29.070488]  ? mmdrop+0x18/0x30
[   29.073736]  ? finish_task_switch+0x1f6/0x740
[   29.078202]  ? copy_overflow+0x20/0x20
[   29.082067]  ? __schedule+0x8f3/0x2060
[   29.085919]  ? check_noncircular+0x20/0x20
[   29.090132]  ? find_held_lock+0x39/0x1d0
[   29.094166]  ? find_held_lock+0x39/0x1d0
[   29.098205]  ? lock_downgrade+0x980/0x980
[   29.102321]  ? default_wake_function+0x30/0x50
[   29.106879]  ? __schedule+0x2060/0x2060
[   29.110818]  ? do_wait_intr+0x3e0/0x3e0
[   29.114762]  ? do_raw_spin_trylock+0x190/0x190
[   29.119313]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   29.124384]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   29.129366]  ? trace_hardirqs_on+0xd/0x10
[   29.133498]  ? __kthread_parkme+0x175/0x240
[   29.137809]  kthread+0x37a/0x440
[   29.141146]  ? process_one_work+0x1be0/0x1be0
[   29.145608]  ? kthread_stop+0x7b0/0x7b0
[   29.149554]  ret_from_fork+0x24/0x30
[   29.153524] Dumping ftrace buffer:
[   29.157104]    (ftrace buffer empty)
[   29.160787] Kernel Offset: disabled
[   29.164388] Rebooting in 86400 seconds..