[....] Starting enhanced syslogd: rsyslogd[ 14.012549] audit: type=1400 audit(1571414265.764:4): avc: denied { syslog } for pid=1916 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. 2019/10/18 15:57:53 parsed 1 programs 2019/10/18 15:57:54 executed programs: 0 syzkaller login: [ 27.840893] ------------[ cut here ]------------ [ 27.845704] WARNING: CPU: 1 PID: 3049 at kernel/locking/rtmutex-debug.c:142 debug_rt_mutex_unlock+0xd4/0x100() [ 27.855872] DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current) [ 27.861844] Kernel panic - not syncing: panic_on_warn set ... [ 27.861844] [ 27.869499] CPU: 1 PID: 3049 Comm: syz-executor.5 Not tainted 4.4.174+ #17 [ 27.876496] 0000000000000000 d3d30f1c1a958b78 ffff8801d9d77628 ffffffff81aad1a1 [ 27.884559] ffff8801d9d77778 ffffffff82835ee0 ffffffff82851320 000000000000008e [ 27.892606] ffffffff8120e084 ffff8801d9d77708 ffffffff813a48c2 0000000041b58ab3 [ 27.901117] Call Trace: [ 27.903707] [] dump_stack+0xc1/0x120 [ 27.909059] [] ? debug_rt_mutex_unlock+0xd4/0x100 [ 27.915538] [] panic+0x1b9/0x37b [ 27.920545] [] ? add_taint.cold+0x16/0x16 [ 27.926589] [] ? vprintk_emit+0x248/0x820 [ 27.932395] [] ? warn_slowpath_common.cold+0x5/0x20 [ 27.939064] [] warn_slowpath_common.cold+0x20/0x20 [ 27.945647] [] warn_slowpath_fmt+0xbf/0x100 [ 27.951610] [] ? warn_slowpath_common+0x120/0x120 [ 27.958194] [] ? rt_mutex_slowunlock+0x16/0x1c0 [ 27.964508] [] debug_rt_mutex_unlock+0xd4/0x100 [ 27.970815] [] rt_mutex_slowunlock+0x1e/0x1c0 [ 27.976946] [] rt_mutex_unlock+0x88/0xf0 [ 27.985508] [] ? rt_mutex_trylock+0x1e0/0x1e0 [ 27.991640] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 27.998465] [] exit_pi_state_list+0x2af/0x540 [ 28.004599] [] ? futex_wait_requeue_pi.constprop.0+0x960/0x960 [ 28.012209] [] ? __might_fault+0x191/0x1d0 [ 28.018081] [] ? compat_exit_robust_list+0x56/0x260 [ 28.024734] [] mm_release+0x2e3/0x400 [ 28.030173] [] do_exit+0x49a/0x2c60 [ 28.035440] [] ? hash_futex+0x17/0x210 [ 28.040966] [] ? release_task+0x14a0/0x14a0 [ 28.046924] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 28.053672] [] ? recalc_sigpending+0x74/0xa0 [ 28.060062] [] ? dequeue_signal+0xc8/0x550 [ 28.065946] [] ? check_preemption_disabled+0x3c/0x200 [ 28.072771] [] do_group_exit+0x111/0x300 [ 28.079423] [] get_signal+0x517/0x1570 [ 28.084950] [] do_signal+0x9c/0x1840 [ 28.090311] [] ? setup_sigcontext+0x780/0x780 [ 28.096529] [] ? kvm_clock_get_cycles+0x9/0x10 [ 28.102748] [] ? ktime_get_ts64+0x1f7/0x2c0 [ 28.108720] [] ? posix_ktime_get_ts+0x16/0x20 [ 28.114850] [] ? __might_fault+0x95/0x1d0 [ 28.121607] [] ? SyS_clock_gettime+0x118/0x1e0 [ 28.127828] [] ? compat_SyS_futex+0x1fb/0x2f0 [ 28.133961] [] ? __compat_put_timespec.isra.0+0xce/0x140 [ 28.141047] [] ? exit_to_usermode_loop+0xf2/0x170 [ 28.147529] [] exit_to_usermode_loop+0x127/0x170 [ 28.154443] [] do_fast_syscall_32+0x7a9/0xa90 [ 28.160573] [] sysenter_flags_fixed+0xd/0x1a [ 28.167487] Kernel Offset: disabled [ 28.171100] Rebooting in 86400 seconds..