[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.724196] INFO: trying to register non-static key. [ 27.729328] the code is fine but needs lockdep annotation. [ 27.734935] turning off the locking correctness validator. [ 27.740550] CPU: 1 PID: 7988 Comm: syz-executor389 Not tainted 4.14.300-syzkaller #0 [ 27.748407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 27.757735] Call Trace: [ 27.760306] dump_stack+0x1b2/0x281 [ 27.763907] register_lock_class+0x389/0x1180 [ 27.768418] ? static_obj+0x50/0x50 [ 27.772072] ? save_trace+0xd6/0x290 [ 27.775781] __lock_acquire+0x167/0x3f20 [ 27.779841] ? cpuacct_charge+0x1ca/0x350 [ 27.783972] ? __lock_acquire+0x5fc/0x3f20 [ 27.788185] ? trace_hardirqs_on+0x10/0x10 [ 27.792407] ? __lock_acquire+0x5fc/0x3f20 [ 27.796629] ? trace_hardirqs_on+0x10/0x10 [ 27.800862] lock_acquire+0x170/0x3f0 [ 27.804644] ? flush_work+0x88/0x770 [ 27.808332] ? finish_task_switch+0x178/0x610 [ 27.812803] flush_work+0xad/0x770 [ 27.816343] ? flush_work+0x88/0x770 [ 27.820036] ? worker_thread+0xff0/0xff0 [ 27.824072] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 27.829068] ? _raw_spin_unlock_irq+0x5a/0x80 [ 27.833614] ? finish_task_switch+0x178/0x610 [ 27.838093] ? finish_task_switch+0x14d/0x610 [ 27.842693] ? __switch_to_asm+0x33/0x60 [ 27.846736] ? __switch_to_asm+0x27/0x60 [ 27.850778] ? mark_held_locks+0xa6/0xf0 [ 27.854816] ? __cancel_work_timer+0x2c1/0x460 [ 27.859387] __cancel_work_timer+0x321/0x460 [ 27.863900] ? work_on_cpu_safe+0x70/0x70 [ 27.868029] ? ___preempt_schedule+0x16/0x18 [ 27.872422] ? preempt_schedule_common+0x45/0xc0 [ 27.877175] ? ___preempt_schedule+0x16/0x18 [ 27.881563] ? smc_accept_dequeue+0x382/0x5c0 [ 27.886039] smc_close_active+0x7e2/0xbb0 [ 27.890274] smc_release+0x3e1/0x5d0 [ 27.893984] __sock_release+0xcd/0x2b0 [ 27.897857] ? __sock_release+0x2b0/0x2b0 [ 27.901991] sock_close+0x15/0x20 [ 27.905421] __fput+0x25f/0x7a0 [ 27.908677] task_work_run+0x11f/0x190 [ 27.912545] do_exit+0xa44/0x2850 [ 27.915977] ? __do_page_fault+0x571/0xad0 [ 27.920189] ? mm_update_next_owner+0x5b0/0x5b0 [