[ 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 '10.128.10.27' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.146273][ T8373] [ 56.148726][ T8373] ==================================== [ 56.154603][ T8373] WARNING: iou-sqp-8372/8373 still has locks held! [ 56.161315][ T8373] 5.12.0-rc4-syzkaller #0 Not tainted [ 56.167500][ T8373] ------------------------------------ [ 56.173676][ T8373] 1 lock held by iou-sqp-8372/8373: [ 56.178898][ T8373] #0: ffff888023426470 (&sqd->lock){+.+.}-{3:3}, at: io_sq_thread+0xff2/0x13a0 [ 56.188061][ T8373] [ 56.188061][ T8373] stack backtrace: [ 56.194095][ T8373] CPU: 0 PID: 8373 Comm: iou-sqp-8372 Not tainted 5.12.0-rc4-syzkaller #0 [ 56.202974][ T8373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.213366][ T8373] Call Trace: [ 56.216636][ T8373] dump_stack+0x141/0x1d7 [ 56.220972][ T8373] get_signal+0x171a/0x2150 [ 56.225462][ T8373] ? mark_held_locks+0x9f/0xe0 [ 56.230594][ T8373] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 56.236424][ T8373] io_sq_thread+0x8d2/0x13a0 [ 56.241006][ T8373] ? io_submit_sqes+0x63e0/0x63e0 [