[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.143495] random: sshd: uninitialized urandom read (32 bytes read) [ 30.458738] audit: type=1400 audit(1550915993.401:6): avc: denied { map } for pid=1762 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 [ 30.493967] random: sshd: uninitialized urandom read (32 bytes read) [ 30.961302] random: sshd: uninitialized urandom read (32 bytes read) [ 50.467942] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.59' (ECDSA) to the list of known hosts. [ 56.127801] random: sshd: uninitialized urandom read (32 bytes read) [ 56.215608] audit: type=1400 audit(1550916019.161:7): avc: denied { map } for pid=1786 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 2019/02/23 10:00:19 parsed 1 programs [ 56.979290] audit: type=1400 audit(1550916019.921:8): avc: denied { map } for pid=1786 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 [ 57.748158] random: cc1: uninitialized urandom read (8 bytes read) 2019/02/23 10:00:22 executed programs: 0 [ 59.227146] audit: type=1400 audit(1550916022.171:9): avc: denied { map } for pid=1786 comm="syz-execprog" path="/root/syzkaller-shm544594738" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 61.403273] audit: type=1400 audit(1550916024.351:10): avc: denied { map } for pid=2657 comm="syz-executor.0" path="/dev/ashmem" dev="devtmpfs" ino=5422 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 2019/02/23 10:00:27 executed programs: 140 [ 64.280165] [ 64.281832] ===================================== [ 64.286658] WARNING: bad unlock balance detected! [ 64.291475] 4.14.102+ #17 Not tainted [ 64.295245] ------------------------------------- [ 64.300072] migration/1/16 is trying to release lock (&rq->lock) at: [ 64.306551] [] migration_cpu_stop+0x2dd/0x430 [ 64.312597] but there are no more locks to release! [ 64.317607] [ 64.317607] other info that might help us debug this: [ 64.324248] 1 lock held by migration/1/16: [ 64.328456] #0: (&p->pi_lock){-.-.}, at: [] migration_cpu_stop+0xe1/0x430 [ 64.337102] [ 64.337102] stack backtrace: [ 64.341579] CPU: 1 PID: 16 Comm: migration/1 Not tainted 4.14.102+ #17 [ 64.348214] Call Trace: [ 64.350777] dump_stack+0xb9/0x10e [ 64.354295] ? migration_cpu_stop+0x2dd/0x430 [ 64.358777] print_unlock_imbalance_bug.cold+0x110/0x11f [ 64.364207] ? lock_set_class+0x3b6/0x570 [ 64.368341] ? migration_cpu_stop+0x2dd/0x430 [ 64.372812] ? reacquire_held_locks+0x3f0/0x3f0 [ 64.377464] ? set_task_cpu+0x30b/0x9f0 [ 64.381432] ? move_queued_task+0x382/0x970 [ 64.385756] ? migration_cpu_stop+0x2dd/0x430 [ 64.390253] ? cpu_stopper_thread+0x130/0x320 [ 64.394727] ? sched_ttwu_pending+0x2a0/0x2a0 [ 64.399194] ? cpu_stopper_thread+0x215/0x320 [ 64.403677] ? _raw_spin_unlock_irq+0x24/0x50 [ 64.408146] ? sched_ttwu_pending+0x2a0/0x2a0 [ 64.412615] ? cpu_stopper_thread+0x19b/0x320 [ 64.417094] ? cpu_stop_create+0x80/0x80 [ 64.421140] ? smpboot_thread_fn+0x5ca/0x900 [ 64.425523] ? sort_range+0x30/0x30 [ 64.429122] ? sort_range+0x30/0x30 [ 64.432724] ? kthread+0x310/0x420 [ 64.436240] ? kthread_create_on_node+0xf0/0xf0 [ 64.440889] ? ret_from_fork+0x3a/0x50 2019/02/23 10:00:32 executed programs: 597 2019/02/23 10:00:37 executed programs: 1076