random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
audit: type=1400 audit(1555596554.463:7): avc: denied { map } for pid=1780 comm="syz-executor904" path="/root/syz-executor904675339" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
dl_rq->running_bw > dl_rq->this_bw
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1781 at kernel/sched/deadline.c:125 sub_rq_bw kernel/sched/deadline.c:125 [inline]
WARNING: CPU: 0 PID: 1781 at kernel/sched/deadline.c:125 switched_from_dl.cold+0x5b/0x62 kernel/sched/deadline.c:2236
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1781 Comm: syz-executor904 Not tainted 4.14.112+ #56
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x10e lib/dump_stack.c:53
panic+0x1d9/0x3c2 kernel/panic.c:182
__warn.cold+0x2f/0x3b kernel/panic.c:546
======================================================
WARNING: possible circular locking dependency detected
4.14.112+ #56 Not tainted
------------------------------------------------------
syz-executor904/1781 is trying to acquire lock:
((console_sem).lock){-...}, at: [< (ptrval)>] down_trylock+0xe/0x60 kernel/locking/semaphore.c:136
but task is already holding lock:
(&rq->lock){-.-.}, at: [< (ptrval)>] task_rq_lock+0xc8/0x330 kernel/sched/core.c:126
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&rq->lock){-.-.}:
-> #1 (&p->pi_lock){-.-.}:
-> #0 ((console_sem).lock){-...}:
other info that might help us debug this:
Chain exists of:
(console_sem).lock --> &p->pi_lock --> &rq->lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->lock);
lock(&p->pi_lock);
lock(&rq->lock);
lock((console_sem).lock);
*** DEADLOCK ***
3 locks held by syz-executor904/1781:
#0: (rcu_read_lock){....}, at: [< (ptrval)>] do_sched_setscheduler+0x87/0x1f0 kernel/sched/core.c:4389
#1: (&p->pi_lock){-.-.}, at: [< (ptrval)>] task_rq_lock+0x6a/0x330 kernel/sched/core.c:124
#2: (&rq->lock){-.-.}, at: [< (ptrval)>] task_rq_lock+0xc8/0x330 kernel/sched/core.c:126
stack backtrace:
CPU: 0 PID: 1781 Comm: syz-executor904 Not tainted 4.14.112+ #56
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x10e lib/dump_stack.c:53
print_circular_bug.isra.0.cold+0x2dc/0x425 kernel/locking/lockdep.c:1258
Shutting down cpus with NMI
Kernel Offset: 0x23c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..