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-net-kasan-gce-7,10.128.0.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.707985] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286 [ 31.709294] IP: 0x286 [ 31.709626] PGD 0 [ 31.709628] P4D 0 [ 31.709923] [ 31.710444] Oops: 0010 [#1] SMP KASAN [ 31.710956] Dumping ftrace buffer: [ 31.711431] (ftrace buffer empty) [ 31.711926] Modules linked in: [ 31.712383] CPU: 0 PID: 234 Comm: kworker/u4:3 Not tainted 4.13.0-rc4+ #2 [ 31.713290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.714517] Workqueue: kstrp strp_work [ 31.715037] task: ffff8801da048340 task.stack: ffff8801da050000 [ 31.715848] RIP: 0010:0x286 [ 31.716245] RSP: 0018:ffff8801da057540 EFLAGS: 00010246 [ 31.717009] RAX: dffffc0000000000 RBX: ffff8801d552dd60 RCX: 0000000000000000 [ 31.718003] RDX: 1ffff1003aaa5bbd RSI: ffffffff85137b00 RDI: ffff8801d552dc48 [ 31.718972] RBP: ffff8801da057558 R08: ffffffff85bbc65e R09: 0000000000000000 [ 31.719924] R10: ffff8801da057438 R11: 0000000000000001 R12: ffff8801d552dc48 [ 31.720913] R13: ffff8801da907318 R14: ffff8801da057980 R15: ffff8801da907300 [ 31.721864] FS: 0000000000000000(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 [ 31.722936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.723710] CR2: 0000000000000286 CR3: 0000000005021000 CR4: 00000000001406f0 [ 31.724708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.725671] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.726622] Call Trace: [ 31.727004] ? strp_work+0x41/0xf0 [ 31.727503] process_one_work+0xbf3/0x1bc0 [ 31.728068] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.732180] ? pwq_dec_nr_in_flight+0x450/0x450 [ 31.736821] ? preempt_notifier_dec+0x20/0x20 [ 31.741287] ? __schedule+0x8f0/0x2070 [ 31.745155] ? check_noncircular+0x20/0x20 [ 31.749352] ? check_noncircular+0x20/0x20 [ 31.753552] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.758704] ? check_noncircular+0x20/0x20 [ 31.762909] ? lock_acquire+0x1d5/0x580 [ 31.766846] ? lock_acquire+0x1d5/0x580 [ 31.770797] ? worker_thread+0x4a3/0x1860 [ 31.774908] ? lock_downgrade+0x990/0x990 [ 31.779019] ? lock_release+0xa40/0xa40 [ 31.782958] ? do_raw_spin_trylock+0x190/0x190 [ 31.787501] ? retint_kernel+0x10/0x10 [ 31.791357] worker_thread+0x223/0x1860 [ 31.795304] ? process_one_work+0x1bc0/0x1bc0 [ 31.799761] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.804220] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.809197] ? trace_hardirqs_on+0xd/0x10 [ 31.813307] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.817763] ? finish_task_switch+0x1d3/0x740 [ 31.822228] ? finish_task_switch+0x1aa/0x740 [ 31.826688] ? preempt_notifier_dec+0x20/0x20 [ 31.831153] ? __schedule+0x8f0/0x2070 [ 31.835005] ? try_to_wake_up+0xf9/0x1600 [ 31.839119] ? migrate_swap_stop+0x970/0x970 [ 31.843493] ? find_held_lock+0x35/0x1d0 [ 31.847520] ? complete+0x62/0x80 [ 31.850943] ? __schedule+0x2070/0x2070 [ 31.854883] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 31.859949] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.864928] ? trace_hardirqs_on+0xd/0x10 [ 31.869057] ? __kthread_parkme+0x173/0x240 [ 31.873345] kthread+0x35e/0x430 [ 31.876675] ? process_one_work+0x1bc0/0x1bc0 [ 31.881136] ? kthread_create_on_node+0x100/0x100 [ 31.885947] ret_from_fork+0x2a/0x40 [ 31.889630] Code: Bad RIP value. [ 31.893053] RIP: 0x286 RSP: ffff8801da057540 [ 31.897426] CR2: 0000000000000286 [ 31.900847] ---[ end trace 2a960d84a05a7a83 ]--- [ 31.905577] Kernel panic - not syncing: Fatal exception [ 31.911311] Dumping ftrace buffer: [ 31.914822] (ftrace buffer empty) [ 31.918496] Kernel Offset: disabled [ 31.922086] Rebooting in 86400 seconds..