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-3,10.128.15.193' (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: [ 25.402145] WARNING: CPU: 0 PID: 49 at net/xfrm/xfrm_state.c:2323 xfrm_state_fini+0x46a/0x620 [ 25.403426] Kernel panic - not syncing: panic_on_warn set ... [ 25.403426] [ 25.404448] CPU: 0 PID: 49 Comm: kworker/u4:3 Not tainted 4.14.0-next-20171122+ #49 [ 25.405599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.406840] Workqueue: netns cleanup_net [ 25.407403] Call Trace: [ 25.407761] dump_stack+0x194/0x257 [ 25.408255] ? arch_local_irq_restore+0x53/0x53 [ 25.408923] ? vsnprintf+0x1ed/0x1900 [ 25.409438] panic+0x1e4/0x41c [ 25.409870] ? refcount_error_report+0x214/0x214 [ 25.410504] ? show_regs_print_info+0x65/0x65 [ 25.411109] ? __warn+0x1c1/0x200 [ 25.411577] ? xfrm_state_fini+0x46a/0x620 [ 25.412140] __warn+0x1dc/0x200 [ 25.412584] ? xfrm_state_fini+0x46a/0x620 [ 25.413152] report_bug+0x211/0x2d0 [ 25.413646] fixup_bug.part.11+0x37/0x80 [ 25.414194] do_error_trap+0x2d7/0x3e0 [ 25.414718] ? math_error+0x400/0x400 [ 25.415230] ? __local_bh_enable_ip+0x121/0x230 [ 25.415855] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.416520] ? xfrm_state_flush+0x557/0x630 [ 25.417096] ? trace_hardirqs_on+0xd/0x10 [ 25.417685] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.418338] do_invalid_op+0x1b/0x20 [ 25.418857] invalid_op+0x18/0x20 [ 25.419322] RIP: 0010:xfrm_state_fini+0x46a/0x620 [ 25.419963] RSP: 0018:ffff8801d9f170f0 EFLAGS: 00010293 [ 25.420690] RAX: ffff8801d9f0a140 RBX: ffff8801cc6e6040 RCX: ffffffff8460661a [ 25.421642] RDX: 0000000000000000 RSI: 1ffff1003b3e1549 RDI: ffffed003b3e2e10 [ 25.424809] RBP: ffff8801d9f17248 R08: 1ffff1003b3e2da4 R09: 0000000000000000 [ 25.432047] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b3e2e20 [ 25.439282] R13: ffff8801d9f17220 R14: 1ffff1003b3e2e24 R15: ffff8801cc6e7500 [ 25.446527] ? xfrm_state_fini+0x46a/0x620 [ 25.450736] ? xfrm_state_init+0x4a0/0x4a0 [ 25.454948] ? mark_held_locks+0xb2/0x100 [ 25.459066] ? kfree+0xe4/0x250 [ 25.462309] ? xfrm_sysctl_fini+0x63/0x80 [ 25.466424] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.471418] ? trace_hardirqs_on+0xd/0x10 [ 25.475813] ? xfrm_policy_fini+0x550/0x550 [ 25.480106] xfrm_net_exit+0x25/0x30 [ 25.483803] ops_exit_list.isra.6+0xae/0x150 [ 25.488207] cleanup_net+0x5c7/0xb60 [ 25.491900] ? unregister_pernet_device+0x80/0x80 [ 25.496722] ? find_held_lock+0x39/0x1d0 [ 25.500760] ? check_noncircular+0x20/0x20 [ 25.504978] ? process_one_work+0xb2f/0x1be0 [ 25.509372] ? __lock_is_held+0xbc/0x140 [ 25.513418] process_one_work+0xbfd/0x1be0 [ 25.517635] ? pwq_dec_nr_in_flight+0x450/0x450 [ 25.522271] ? finish_task_switch+0x1f6/0x740 [ 25.526770] ? find_held_lock+0x39/0x1d0 [ 25.530818] ? __sched_text_start+0x8/0x8 [ 25.534937] ? lock_downgrade+0x980/0x980 [ 25.539056] ? __wake_up_common_lock+0x190/0x310 [ 25.543795] ? find_held_lock+0x39/0x1d0 [ 25.547861] ? lock_acquire+0x1d5/0x580 [ 25.551813] ? worker_thread+0x4a3/0x1990 [ 25.555938] ? lock_release+0xda0/0xda0 [ 25.559883] ? worker_pool_assign_id+0x1b0/0x1b0 [ 25.564612] ? do_raw_spin_trylock+0x190/0x190 [ 25.569181] worker_thread+0x223/0x1990 [ 25.573144] ? process_one_work+0x1be0/0x1be0 [ 25.577614] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.582077] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.587059] ? trace_hardirqs_on+0xd/0x10 [ 25.591173] ? mmdrop+0x18/0x30 [ 25.594418] ? finish_task_switch+0x1f6/0x740 [ 25.598883] ? copy_overflow+0x20/0x20 [ 25.602744] ? __schedule+0x8f3/0x2060 [ 25.606596] ? check_noncircular+0x20/0x20 [ 25.610811] ? find_held_lock+0x39/0x1d0 [ 25.614847] ? find_held_lock+0x39/0x1d0 [ 25.618886] ? lock_downgrade+0x980/0x980 [ 25.623001] ? default_wake_function+0x30/0x50 [ 25.627556] ? __schedule+0x2060/0x2060 [ 25.631497] ? do_wait_intr+0x3e0/0x3e0 [ 25.635439] ? do_raw_spin_trylock+0x190/0x190 [ 25.639991] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.645060] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.650042] ? trace_hardirqs_on+0xd/0x10 [ 25.654155] ? __kthread_parkme+0x175/0x240 [ 25.658448] kthread+0x37a/0x440 [ 25.661786] ? process_one_work+0x1be0/0x1be0 [ 25.666246] ? kthread_stop+0x7b0/0x7b0 [ 25.670190] ret_from_fork+0x24/0x30 [ 25.674435] Dumping ftrace buffer: [ 25.678022] (ftrace buffer empty) [ 25.681702] Kernel Offset: disabled [ 25.685301] Rebooting in 86400 seconds..