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-2,10.128.15.200' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.969458] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286 [ 42.977482] IP: 0x286 [ 42.979860] PGD 0 [ 42.979862] P4D 0 [ 42.981976] [ 42.985685] Oops: 0010 [#1] SMP KASAN [ 42.989453] Dumping ftrace buffer: [ 42.992958] (ftrace buffer empty) [ 42.996634] Modules linked in: [ 42.999796] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.13.0-rc6-next-20170823+ #7 [ 43.007726] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.017056] Workqueue: kstrp strp_work [ 43.020911] task: ffff8801d9f20140 task.stack: ffff8801d9f28000 [ 43.026934] RIP: 0010:0x286 [ 43.029831] RSP: 0018:ffff8801d9f2f520 EFLAGS: 00010246 [ 43.035159] RAX: dffffc0000000000 RBX: ffff8801cb2d5b78 RCX: 0000000000000000 [ 43.042396] RDX: 1ffff1003965ab81 RSI: ffffffff85b37920 RDI: ffff8801cb2d5a48 [ 43.049631] RBP: ffff8801d9f2f538 R08: ffff8801d9f2ee98 R09: ffff8801d9f2eea8 [ 43.056869] R10: ffff8801d9f2ee20 R11: 1ffff1003b3e42bb R12: ffff8801cb2d5a48 [ 43.064107] R13: ffff8801d9eb3e18 R14: ffff8801d9f2f980 R15: ffff8801d9eb3e00 [ 43.071346] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 43.079537] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.085385] CR2: 0000000000000286 CR3: 00000001d147a000 CR4: 00000000001406f0 [ 43.092622] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.099871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.107109] Call Trace: [ 43.109665] ? strp_work+0x41/0xf0 [ 43.113173] process_one_work+0xbfd/0x1be0 [ 43.117373] ? check_noncircular+0x20/0x20 [ 43.121579] ? pwq_dec_nr_in_flight+0x450/0x450 [ 43.126213] ? finish_task_switch+0x1d3/0x740 [ 43.130670] ? finish_task_switch+0x1aa/0x740 [ 43.135160] ? __sched_text_start+0x8/0x8 [ 43.139281] ? lock_downgrade+0x990/0x990 [ 43.143410] ? find_held_lock+0x39/0x1d0 [ 43.147443] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 43.152253] ? lock_acquire+0x1d5/0x580 [ 43.156195] ? worker_thread+0x4a3/0x1860 [ 43.160315] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.165038] ? lock_release+0xd70/0xd70 [ 43.168976] ? do_raw_spin_trylock+0x190/0x190 [ 43.173526] ? retint_kernel+0x10/0x10 [ 43.177391] worker_thread+0x223/0x1860 [ 43.181360] ? process_one_work+0x1be0/0x1be0 [ 43.185826] ? check_noncircular+0x20/0x20 [ 43.190029] ? _raw_spin_unlock_irq+0x27/0x70 [ 43.194490] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.199477] ? trace_hardirqs_on+0xd/0x10 [ 43.203598] ? finish_task_switch+0x1d3/0x740 [ 43.208061] ? finish_task_switch+0x1aa/0x740 [ 43.212526] ? preempt_notifier_dec+0x20/0x20 [ 43.216995] ? __schedule+0x8f0/0x2070 [ 43.220857] ? try_to_wake_up+0xf9/0x1600 [ 43.225000] ? find_held_lock+0x39/0x1d0 [ 43.229035] ? lock_downgrade+0x990/0x990 [ 43.233156] ? complete+0x18/0x80 [ 43.236584] ? __schedule+0x2070/0x2070 [ 43.240531] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 43.245607] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.250593] ? trace_hardirqs_on+0xd/0x10 [ 43.254712] ? __kthread_parkme+0x173/0x240 [ 43.259004] kthread+0x39c/0x470 [ 43.262341] ? process_one_work+0x1be0/0x1be0 [ 43.266804] ? kthread_create_on_node+0x100/0x100 [ 43.271620] ret_from_fork+0x2a/0x40 [ 43.275308] Code: Bad RIP value. [ 43.278734] RIP: 0x286 RSP: ffff8801d9f2f520 [ 43.283108] CR2: 0000000000000286 [ 43.286536] ---[ end trace 8845cf56d2a38557 ]--- [ 43.291279] Kernel panic - not syncing: Fatal exception [ 43.296649] Dumping ftrace buffer: [ 43.300160] (ftrace buffer empty) [ 43.303840] Kernel Offset: disabled [ 43.307452] Rebooting in 86400 seconds..