[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 39.068226] [ 39.071132] ================================================ [ 39.078064] WARNING: lock held when returning to user space! [ 39.084933] 4.14.307-syzkaller #0 Not tainted [ 39.090004] ------------------------------------------------ [ 39.100741] syz-executor406/7954 is leaving the kernel with locks still held! [ 39.114400] 1 lock held by syz-executor406/7954: [ 39.121135] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0