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-9,10.128.15.210' (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: [ 41.861881] WARNING: CPU: 0 PID: 21 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620 [ 41.863154] Kernel panic - not syncing: panic_on_warn set ... [ 41.863154] [ 41.864122] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.14.0-mm1+ #22 [ 41.865040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.866263] Workqueue: netns cleanup_net [ 41.866810] Call Trace: [ 41.867171] dump_stack+0x194/0x257 [ 41.867661] ? arch_local_irq_restore+0x53/0x53 [ 41.868298] ? vsnprintf+0x1ed/0x1900 [ 41.868816] panic+0x1e4/0x41c [ 41.869251] ? refcount_error_report+0x214/0x214 [ 41.869882] ? show_regs_print_info+0x65/0x65 [ 41.870487] ? __warn+0x1c1/0x200 [ 41.870957] ? xfrm_state_fini+0x46a/0x620 [ 41.871522] __warn+0x1dc/0x200 [ 41.871965] ? xfrm_state_fini+0x46a/0x620 [ 41.872533] report_bug+0x211/0x2d0 [ 41.873026] fixup_bug.part.10+0x37/0x80 [ 41.873571] do_error_trap+0x2d7/0x3e0 [ 41.874095] ? math_error+0x400/0x400 [ 41.874606] ? __local_bh_enable_ip+0x121/0x230 [ 41.875230] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.875895] ? xfrm_state_flush+0x557/0x630 [ 41.876472] ? trace_hardirqs_on+0xd/0x10 [ 41.877032] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.877682] do_invalid_op+0x1b/0x20 [ 41.878182] invalid_op+0x18/0x20 [ 41.878645] RIP: 0010:xfrm_state_fini+0x46a/0x620 [ 41.879288] RSP: 0018:ffff8801d9cef0f0 EFLAGS: 00010293 [ 41.879997] RAX: ffff8801d9ce4580 RBX: ffff8801cc5ca040 RCX: ffffffff845d04ba [ 41.880951] RDX: 0000000000000000 RSI: 1ffff1003b39c9d1 RDI: ffffed003b39de10 [ 41.881904] RBP: ffff8801d9cef248 R08: 1ffff1003b39dda4 R09: 0000000000000000 [ 41.882854] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b39de20 [ 41.890091] R13: ffff8801d9cef220 R14: 1ffff1003b39de24 R15: ffff8801cc5cb500 [ 41.897341] ? xfrm_state_fini+0x46a/0x620 [ 41.901552] ? xfrm_state_init+0x4a0/0x4a0 [ 41.905765] ? mark_held_locks+0xb2/0x100 [ 41.909879] ? kfree+0xe4/0x250 [ 41.913124] ? xfrm_sysctl_fini+0x63/0x80 [ 41.917484] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.922468] ? trace_hardirqs_on+0xd/0x10 [ 41.926591] ? xfrm_policy_fini+0x550/0x550 [ 41.930881] xfrm_net_exit+0x25/0x30 [ 41.934563] ops_exit_list.isra.6+0xae/0x150 [ 41.938954] cleanup_net+0x5c7/0xb60 [ 41.942641] ? unregister_pernet_device+0x80/0x80 [ 41.947459] ? find_held_lock+0x39/0x1d0 [ 41.951491] ? check_noncircular+0x20/0x20 [ 41.955704] ? process_one_work+0xb2f/0x1be0 [ 41.960089] ? __lock_is_held+0xbc/0x140 [ 41.964130] process_one_work+0xbfd/0x1be0 [ 41.968342] ? pwq_dec_nr_in_flight+0x450/0x450 [ 41.972976] ? finish_task_switch+0x1f6/0x740 [ 41.977466] ? __sched_text_start+0x8/0x8 [ 41.981587] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 41.986747] ? select_task_rq_fair+0x2770/0x2770 [ 41.991466] ? check_noncircular+0x20/0x20 [ 41.995673] ? find_held_lock+0x39/0x1d0 [ 41.999712] ? lock_acquire+0x1d5/0x580 [ 42.003651] ? worker_thread+0x4a3/0x1990 [ 42.007772] ? lock_release+0xda0/0xda0 [ 42.011714] ? worker_pool_assign_id+0x1b0/0x1b0 [ 42.016442] ? do_raw_spin_trylock+0x190/0x190 [ 42.021004] worker_thread+0x223/0x1990 [ 42.024964] ? process_one_work+0x1be0/0x1be0 [ 42.029432] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.033894] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.038879] ? trace_hardirqs_on+0xd/0x10 [ 42.042994] ? mmdrop+0x18/0x30 [ 42.046245] ? finish_task_switch+0x1f6/0x740 [ 42.050715] ? copy_overflow+0x20/0x20 [ 42.054584] ? __schedule+0x8f3/0x2060 [ 42.058440] ? check_noncircular+0x20/0x20 [ 42.062657] ? find_held_lock+0x39/0x1d0 [ 42.066695] ? find_held_lock+0x39/0x1d0 [ 42.070735] ? lock_downgrade+0x980/0x980 [ 42.074853] ? default_wake_function+0x30/0x50 [ 42.079410] ? __schedule+0x2060/0x2060 [ 42.083352] ? do_wait_intr+0x3e0/0x3e0 [ 42.087297] ? do_raw_spin_trylock+0x190/0x190 [ 42.091851] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 42.096925] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.101919] ? trace_hardirqs_on+0xd/0x10 [ 42.106036] ? __kthread_parkme+0x175/0x240 [ 42.110327] kthread+0x37a/0x440 [ 42.113661] ? process_one_work+0x1be0/0x1be0 [ 42.118120] ? kthread_stop+0x7b0/0x7b0 [ 42.122066] ret_from_fork+0x24/0x30 [ 42.126024] Dumping ftrace buffer: [ 42.129620] (ftrace buffer empty) [ 42.133296] Kernel Offset: disabled [ 42.136892] Rebooting in 86400 seconds..