Starting mcstransd: [ 9.911331] random: sshd: uninitialized urandom read (32 bytes read) [....] 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: [ 11.620148] random: sshd: uninitialized urandom read (32 bytes read) [ 11.881021] random: sshd: uninitialized urandom read (32 bytes read) [ 12.109091] random: crng init done Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. 2019/10/18 15:46:11 parsed 1 programs 2019/10/18 15:46:13 executed programs: 0 [ 38.954468] audit: type=1400 audit(1571413575.398:5): avc: denied { associate } for pid=2069 comm="syz-executor.1" name="syz1" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 41.964927] hrtimer: interrupt took 65736 ns 2019/10/18 15:46:18 executed programs: 24 2019/10/18 15:46:24 executed programs: 66 [ 52.846164] ------------[ cut here ]------------ [ 52.850963] WARNING: CPU: 0 PID: 3487 at kernel/locking/rtmutex-debug.c:142 debug_rt_mutex_unlock+0xd4/0x100 [ 52.860902] DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current)[ 52.866850] Kernel panic - not syncing: panic_on_warn set ... [ 52.866850] [ 52.874214] CPU: 0 PID: 3487 Comm: syz-executor.3 Not tainted 4.9.194+ #0 [ 52.881132] ffff8801cf80f650 ffffffff81b67001 ffff8801cf80f700 ffffffff82a3b3c0 [ 52.889149] 00000000ffffffff 0000000000000000 0000000000000009 ffff8801cf80f730 [ 52.897161] ffffffff813fef3a 0000000041b58ab3 ffffffff82e32f55 ffffffff813fed61 [ 52.905168] Call Trace: [ 52.907740] [<00000000ebe7e29f>] dump_stack+0xc1/0x120 [ 52.913080] [<00000000b050e5cc>] panic+0x1d9/0x3bd [ 52.918077] [<000000000abd0c05>] ? add_taint.cold+0x16/0x16 [ 52.923852] [<0000000079f73041>] ? vprintk_emit+0x277/0x6f0 [ 52.929629] [<000000007d4bee44>] ? __warn.cold+0x14/0x2f [ 52.935143] [<000000006755276e>] ? debug_rt_mutex_unlock+0xd4/0x100 [ 52.941610] [<000000008005c0b3>] __warn.cold+0x2f/0x2f [ 52.946953] [<00000000cea336bd>] warn_slowpath_fmt+0xc2/0x100 [ 52.952901] [<000000009059a0db>] ? __warn+0x1b0/0x1b0 [ 52.958157] [<0000000049a04a84>] ? rt_mutex_slowunlock+0x16/0x1d0 [ 52.964469] [<000000006755276e>] debug_rt_mutex_unlock+0xd4/0x100 [ 52.970764] [<000000002c4de7e8>] rt_mutex_slowunlock+0x21/0x1d0 [ 52.976909] [<00000000869d77ff>] rt_mutex_unlock+0x6e/0xc0 [ 52.982596] [<000000002e2bee54>] ? rt_mutex_lock_interruptible+0x40/0x40 [ 52.989502] [<00000000b5750c97>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 52.996323] [<00000000b4f8166c>] exit_pi_state_list+0x29e/0x550 [ 53.002446] [<00000000c17f4584>] ? __might_fault+0x114/0x1d0 [ 53.008308] [<0000000087df2cf2>] ? futex_wait_requeue_pi.constprop.0+0x9a0/0x9a0 [ 53.015904] [<00000000bf38c995>] ? __might_fault+0x18e/0x1d0 [ 53.021764] [<000000008377994b>] ? exit_robust_list+0x28/0x230 [ 53.027800] [<00000000edcda2a7>] mm_release+0x2ee/0x410 [ 53.033226] [<0000000063bf51a4>] do_exit+0x395/0x2aa0 [ 53.038481] [<00000000f7a5889d>] ? futex_wake+0x3ad/0x460 [ 53.044199] [<0000000007fed36a>] ? release_task+0x14a0/0x14a0 [ 53.050161] [<00000000dd012b3b>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 53.056899] [<0000000048e5e2c5>] ? check_preemption_disabled+0x3c/0x200 [ 53.063720] [<0000000048e5e2c5>] ? check_preemption_disabled+0x3c/0x200 [ 53.070534] [<000000005605a0a3>] do_group_exit+0x111/0x300 [ 53.076221] [<000000002ea30913>] get_signal+0x377/0x1cb0 [ 53.081735] [<000000009c228101>] ? do_futex+0x161/0x1a70 [ 53.087248] [<00000000653cb397>] do_signal+0x9c/0x1920 [ 53.092590] [<000000009a567a65>] ? trace_hardirqs_on+0x10/0x10 [ 53.098624] [<0000000048e5e2c5>] ? check_preemption_disabled+0x3c/0x200 [ 53.105440] [<0000000000440e27>] ? retint_kernel+0x2d/0x2d [ 53.111129] [<000000009e5dfaf7>] ? setup_sigcontext+0x7d0/0x7d0 [ 53.117251] [<00000000dd012b3b>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 53.123982] [<00000000a1b4d3ec>] ? SyS_futex+0x25f/0x360 [ 53.129497] [<000000003171185b>] ? do_futex+0x1a70/0x1a70 [ 53.135102] [<0000000087305693>] ? exit_to_usermode_loop+0xcc/0x160 [ 53.141579] [<00000000954f1805>] exit_to_usermode_loop+0x11c/0x160 [ 53.147960] [<00000000c2465bc0>] do_syscall_64+0x3ab/0x5c0 [ 53.153650] [<0000000047bfdce0>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 54.304253] Shutting down cpus with NMI [ 54.308761] Kernel Offset: disabled [ 54.312413] Rebooting in 86400 seconds..