[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.184173] random: sshd: uninitialized urandom read (32 bytes read) [ 26.643099] audit: type=1400 audit(1551096418.576:6): avc: denied { map } for pid=1782 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 26.678210] random: sshd: uninitialized urandom read (32 bytes read) [ 27.215241] random: sshd: uninitialized urandom read (32 bytes read) [ 28.650165] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. [ 34.469752] random: sshd: uninitialized urandom read (32 bytes read) [ 34.558174] audit: type=1400 audit(1551096426.486:7): avc: denied { map } for pid=1800 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/02/25 12:07:07 parsed 1 programs [ 35.352313] audit: type=1400 audit(1551096427.286:8): avc: denied { map } for pid=1800 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5005 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 36.362826] random: cc1: uninitialized urandom read (8 bytes read) 2019/02/25 12:07:09 executed programs: 0 [ 37.795915] audit: type=1400 audit(1551096429.726:9): avc: denied { map } for pid=1800 comm="syz-execprog" path="/root/syzkaller-shm588842167" dev="sda1" ino=16461 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2019/02/25 12:07:14 executed programs: 187 [ 45.530771] [ 45.532559] ===================================== [ 45.537394] WARNING: bad unlock balance detected! [ 45.542263] 4.14.103+ #18 Not tainted [ 45.546077] ------------------------------------- [ 45.550907] migration/1/16 is trying to release lock (&rq->lock) at: [ 45.557398] [] migration_cpu_stop+0x2dd/0x430 [ 45.563441] but there are no more locks to release! [ 45.568448] [ 45.568448] other info that might help us debug this: [ 45.575105] 1 lock held by migration/1/16: [ 45.579323] #0: (&p->pi_lock){-.-.}, at: [] migration_cpu_stop+0xe1/0x430 [ 45.587993] [ 45.587993] stack backtrace: [ 45.592483] CPU: 1 PID: 16 Comm: migration/1 Not tainted 4.14.103+ #18 [ 45.599182] Call Trace: [ 45.601753] dump_stack+0xb9/0x10e [ 45.605289] ? migration_cpu_stop+0x2dd/0x430 [ 45.609781] print_unlock_imbalance_bug.cold+0x110/0x11f [ 45.615229] ? lock_set_class+0x3b6/0x570 [ 45.619370] ? migration_cpu_stop+0x2dd/0x430 [ 45.623848] ? reacquire_held_locks+0x3f0/0x3f0 [ 45.628523] ? set_task_cpu+0x30b/0x9f0 [ 45.632479] ? move_queued_task+0x382/0x970 [ 45.636779] ? migration_cpu_stop+0x2dd/0x430 [ 45.641251] ? cpu_stopper_thread+0x130/0x320 [ 45.645722] ? sched_ttwu_pending+0x2a0/0x2a0 [ 45.650197] ? cpu_stopper_thread+0x215/0x320 [ 45.654697] ? _raw_spin_unlock_irq+0x24/0x50 [ 45.659169] ? sched_ttwu_pending+0x2a0/0x2a0 [ 45.663641] ? cpu_stopper_thread+0x19b/0x320 [ 45.668124] ? cpu_stop_create+0x80/0x80 [ 45.672157] ? smpboot_thread_fn+0x5ca/0x900 [ 45.676539] ? sort_range+0x30/0x30 [ 45.680163] ? sort_range+0x30/0x30 [ 45.683764] ? kthread+0x310/0x420 [ 45.687276] ? kthread_create_on_node+0xf0/0xf0 [ 45.691919] ? ret_from_fork+0x3a/0x50 2019/02/25 12:07:19 executed programs: 694 2019/02/25 12:07:24 executed programs: 1289