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-4,10.128.0.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.939948] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286 [ 44.941117] IP: 0x286 [ 44.941447] PGD 0 [ 44.941449] P4D 0 [ 44.941746] [ 44.942269] Oops: 0010 [#1] SMP KASAN [ 44.942780] Dumping ftrace buffer: [ 44.943288] (ftrace buffer empty) [ 44.943783] Modules linked in: [ 44.944217] CPU: 1 PID: 105 Comm: kworker/u4:4 Not tainted 4.13.0-rc5+ #12 [ 44.945154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.946390] Workqueue: kstrp strp_work [ 44.946914] task: ffff8801d949c300 task.stack: ffff8801d9b30000 [ 44.947741] RIP: 0010:0x286 [ 44.948152] RSP: 0018:ffff8801d9b37540 EFLAGS: 00010246 [ 44.948876] RAX: dffffc0000000000 RBX: ffff8801d06e1d60 RCX: 0000000000000000 [ 44.949827] RDX: 1ffff1003a0dc3bd RSI: ffffffff85b38e40 RDI: ffff8801d06e1c48 [ 44.950792] RBP: ffff8801d9b37558 R08: ffffffff866ae88c R09: 0000000000000000 [ 44.951755] R10: ffff8801d9b37438 R11: 0000000000000001 R12: ffff8801d06e1c48 [ 44.952740] R13: ffff8801d990d318 R14: ffff8801d9b37980 R15: ffff8801d990d300 [ 44.953723] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 44.954796] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.955603] CR2: 0000000000000286 CR3: 0000000005a22000 CR4: 00000000001406e0 [ 44.956555] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.957523] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.958476] Call Trace: [ 44.958830] ? strp_work+0x41/0xf0 [ 44.959308] process_one_work+0xbf3/0x1bc0 [ 44.959875] ? _raw_spin_unlock_irq+0x27/0x70 [ 44.963224] ? pwq_dec_nr_in_flight+0x450/0x450 [ 44.967861] ? preempt_notifier_dec+0x20/0x20 [ 44.972328] ? __schedule+0x8f0/0x2070 [ 44.976186] ? check_noncircular+0x20/0x20 [ 44.980392] ? check_noncircular+0x20/0x20 [ 44.984597] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 44.989753] ? check_noncircular+0x20/0x20 [ 44.993963] ? lock_acquire+0x1d5/0x580 [ 44.997900] ? lock_acquire+0x1d5/0x580 [ 45.001839] ? worker_thread+0x4a3/0x1860 [ 45.005951] ? lock_downgrade+0x990/0x990 [ 45.010063] ? lock_release+0xa40/0xa40 [ 45.014003] ? do_raw_spin_trylock+0x190/0x190 [ 45.018549] ? pr_cont_work+0x130/0x130 [ 45.022492] ? set_next_entity+0x30e/0xe10 [ 45.026697] worker_thread+0x223/0x1860 [ 45.030645] ? process_one_work+0x1bc0/0x1bc0 [ 45.035109] ? account_kernel_stack+0x155/0x1f0 [ 45.039744] ? put_task_stack+0x116/0x270 [ 45.043865] ? finish_task_switch+0x4c9/0x740 [ 45.048327] ? preempt_notifier_dec+0x20/0x20 [ 45.052793] ? __schedule+0x8f0/0x2070 [ 45.056653] ? try_to_wake_up+0xf9/0x1600 [ 45.060774] ? migrate_swap_stop+0x970/0x970 [ 45.065158] ? find_held_lock+0x35/0x1d0 [ 45.069188] ? complete+0x62/0x80 [ 45.072610] ? __schedule+0x2070/0x2070 [ 45.076552] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 45.081620] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 45.086602] ? trace_hardirqs_on+0xd/0x10 [ 45.090716] ? __kthread_parkme+0x173/0x240 [ 45.095006] kthread+0x35e/0x430 [ 45.098338] ? process_one_work+0x1bc0/0x1bc0 [ 45.102799] ? kthread_create_on_node+0x100/0x100 [ 45.107616] ret_from_fork+0x2a/0x40 [ 45.111299] Code: Bad RIP value. [ 45.114718] RIP: 0x286 RSP: ffff8801d9b37540 [ 45.119097] CR2: 0000000000000286 [ 45.122525] ---[ end trace 15b1b891ef03b14b ]--- [ 45.127248] Kernel panic - not syncing: Fatal exception [ 45.132609] Dumping ftrace buffer: [ 45.136116] (ftrace buffer empty) [ 45.139804] Kernel Offset: disabled [ 45.143399] Rebooting in 86400 seconds..