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-1,10.128.15.209' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.556781] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286 [ 35.557955] IP: 0x286 [ 35.558283] PGD 0 [ 35.558285] P4D 0 [ 35.558580] [ 35.559168] Oops: 0010 [#1] SMP KASAN [ 35.559677] Dumping ftrace buffer: [ 35.560151] (ftrace buffer empty) [ 35.560678] Modules linked in: [ 35.561110] CPU: 1 PID: 58 Comm: kworker/u4:2 Not tainted 4.13.0-rc5-next-20170817+ #5 [ 35.562171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.563396] Workqueue: kstrp strp_work [ 35.563914] task: ffff8801d9aac6c0 task.stack: ffff8801d9ab0000 [ 35.564726] RIP: 0010:0x286 [ 35.565120] RSP: 0018:ffff8801d9ab7540 EFLAGS: 00010246 [ 35.565827] RAX: dffffc0000000000 RBX: ffff8801cf17ed60 RCX: 0000000000000000 [ 35.566789] RDX: 1ffff10039e2fdbd RSI: ffffffff85b34380 RDI: ffff8801cf17ec48 [ 35.567740] RBP: ffff8801d9ab7558 R08: 0000000000000000 R09: 0000000000000000 [ 35.568690] R10: ffff8801d9ab7438 R11: dffffc0000000000 R12: ffff8801cf17ec48 [ 35.569643] R13: ffff8801d989f718 R14: ffff8801d9ab7980 R15: ffff8801d989f700 [ 35.570616] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.571699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.572470] CR2: 0000000000000286 CR3: 00000001cf06a000 CR4: 00000000001406e0 [ 35.573461] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.574577] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.575578] Call Trace: [ 35.575933] ? strp_work+0x41/0xf0 [ 35.576412] process_one_work+0xbf3/0x1bc0 [ 35.577527] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.581991] ? pwq_dec_nr_in_flight+0x450/0x450 [ 35.586632] ? preempt_notifier_dec+0x20/0x20 [ 35.591108] ? __schedule+0x8f0/0x2070 [ 35.594967] ? check_noncircular+0x20/0x20 [ 35.599168] ? check_noncircular+0x20/0x20 [ 35.603373] ? select_task_rq_fair+0xec9/0x3380 [ 35.608006] ? lock_downgrade+0x990/0x990 [ 35.612118] ? check_noncircular+0x20/0x20 [ 35.616318] ? kvm_sched_clock_read+0x25/0x40 [ 35.620785] ? lock_acquire+0x1d5/0x580 [ 35.624725] ? lock_acquire+0x1d5/0x580 [ 35.628662] ? worker_thread+0x4a3/0x1860 [ 35.632773] ? lock_downgrade+0x990/0x990 [ 35.636887] ? lock_release+0xa40/0xa40 [ 35.640823] ? do_raw_spin_trylock+0x190/0x190 [ 35.645376] ? pr_cont_work+0x130/0x130 [ 35.649325] worker_thread+0x223/0x1860 [ 35.653273] ? process_one_work+0x1bc0/0x1bc0 [ 35.657735] ? account_kernel_stack+0x155/0x1f0 [ 35.662368] ? put_task_stack+0x116/0x270 [ 35.666482] ? finish_task_switch+0x4c9/0x740 [ 35.670946] ? preempt_notifier_dec+0x20/0x20 [ 35.675412] ? __schedule+0x8f0/0x2070 [ 35.679267] ? try_to_wake_up+0xf9/0x1600 [ 35.683385] ? migrate_swap_stop+0x970/0x970 [ 35.687761] ? find_held_lock+0x35/0x1d0 [ 35.691789] ? complete+0x62/0x80 [ 35.695209] ? __schedule+0x2070/0x2070 [ 35.699149] ? __lockdep_init_map+0xe4/0x650 [ 35.703523] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 35.708589] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.713570] ? trace_hardirqs_on+0xd/0x10 [ 35.718076] ? __kthread_parkme+0x173/0x240 [ 35.722365] kthread+0x35e/0x430 [ 35.725698] ? process_one_work+0x1bc0/0x1bc0 [ 35.730155] ? kthread_create_on_node+0x100/0x100 [ 35.734963] ret_from_fork+0x2a/0x40 [ 35.738647] Code: Bad RIP value. [ 35.742068] RIP: 0x286 RSP: ffff8801d9ab7540 [ 35.746438] CR2: 0000000000000286 [ 35.749859] ---[ end trace faab6d7b706fe062 ]--- [ 35.754577] Kernel panic - not syncing: Fatal exception [ 35.760247] Dumping ftrace buffer: [ 35.763753] (ftrace buffer empty) [ 35.767428] Kernel Offset: disabled [ 35.771020] Rebooting in 86400 seconds..