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-7,10.128.0.15' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.763668] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286 [ 34.771667] IP: 0x286 [ 34.774044] PGD 0 [ 34.774047] P4D 0 [ 34.776159] [ 34.779866] Oops: 0010 [#1] SMP KASAN [ 34.783634] Dumping ftrace buffer: [ 34.787139] (ftrace buffer empty) [ 34.790824] Modules linked in: [ 34.793990] CPU: 1 PID: 587 Comm: kworker/u4:5 Not tainted 4.13.0-rc6-next-20170825+ #9 [ 34.802095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.811435] Workqueue: kstrp strp_work [ 34.815289] task: ffff8801d8262400 task.stack: ffff8801d7ca8000 [ 34.821484] RIP: 0010:0x286 [ 34.824382] RSP: 0018:ffff8801d7caf520 EFLAGS: 00010246 [ 34.829710] RAX: dffffc0000000000 RBX: ffff8801cc2f1b78 RCX: 0000000000000000 [ 34.836946] RDX: 1ffff1003985e381 RSI: ffffffff85b37b20 RDI: ffff8801cc2f1a48 [ 34.844181] RBP: ffff8801d7caf538 R08: ffff8801d7caee98 R09: ffff8801d7caeea8 [ 34.851419] R10: ffff8801d7caee20 R11: 1ffff1003b04c713 R12: ffff8801cc2f1a48 [ 34.858654] R13: ffff8801d87da218 R14: ffff8801d7caf980 R15: ffff8801d87da200 [ 34.865892] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.874082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.879928] CR2: 0000000000000286 CR3: 00000001d4c4c000 CR4: 00000000001406e0 [ 34.887178] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.894412] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.901654] Call Trace: [ 34.904217] ? strp_work+0x41/0xf0 [ 34.907736] process_one_work+0xbfd/0x1be0 [ 34.911948] ? check_noncircular+0x20/0x20 [ 34.916153] ? pwq_dec_nr_in_flight+0x450/0x450 [ 34.920785] ? finish_task_switch+0x1d3/0x740 [ 34.925244] ? finish_task_switch+0x1aa/0x740 [ 34.929728] ? __sched_text_start+0x8/0x8 [ 34.933842] ? check_noncircular+0x20/0x20 [ 34.938041] ? select_task_rq_fair+0x3da/0x3380 [ 34.942677] ? find_held_lock+0x39/0x1d0 [ 34.946707] ? __lock_is_held+0xbc/0x140 [ 34.950733] ? lock_acquire+0x1d5/0x580 [ 34.954671] ? worker_thread+0x4a3/0x1860 [ 34.958786] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.963507] ? lock_release+0xd70/0xd70 [ 34.967447] ? do_raw_spin_trylock+0x190/0x190 [ 34.971997] ? retint_kernel+0x10/0x10 [ 34.975859] worker_thread+0x223/0x1860 [ 34.979808] ? process_one_work+0x1be0/0x1be0 [ 34.984269] ? check_noncircular+0x20/0x20 [ 34.988472] ? account_kernel_stack+0x155/0x1f0 [ 34.993109] ? put_task_stack+0x116/0x270 [ 34.997223] ? finish_task_switch+0x4c9/0x740 [ 35.001684] ? preempt_notifier_dec+0x20/0x20 [ 35.006159] ? __schedule+0x8f0/0x2070 [ 35.010017] ? try_to_wake_up+0xf9/0x1600 [ 35.014132] ? find_held_lock+0x39/0x1d0 [ 35.018164] ? lock_downgrade+0x990/0x990 [ 35.022280] ? complete+0x18/0x80 [ 35.025701] ? __schedule+0x2070/0x2070 [ 35.029643] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 35.034710] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.039701] ? trace_hardirqs_on+0xd/0x10 [ 35.043813] ? __kthread_parkme+0x173/0x240 [ 35.048102] kthread+0x39c/0x470 [ 35.051431] ? process_one_work+0x1be0/0x1be0 [ 35.055892] ? kthread_create_on_node+0x100/0x100 [ 35.060710] ret_from_fork+0x2a/0x40 [ 35.064393] Code: Bad RIP value. [ 35.067816] RIP: 0x286 RSP: ffff8801d7caf520 [ 35.072187] CR2: 0000000000000286 [ 35.075609] ---[ end trace 17be7819b6f9a34d ]--- [ 35.080328] Kernel panic - not syncing: Fatal exception [ 35.085689] Dumping ftrace buffer: [ 35.089197] (ftrace buffer empty) [ 35.092873] Kernel Offset: disabled [ 35.096467] Rebooting in 86400 seconds..