[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 34.015774] [ 34.017434] ================================================ [ 34.023229] WARNING: lock held when returning to user space! [ 34.029014] 4.14.307-syzkaller #0 Not tainted [ 34.033494] ------------------------------------------------ [ 34.039302] syz-executor323/7966 is leaving the kernel with locks still held! [ 34.046558] 1 lock held by syz-executor323/7966: [ 34.051308] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0