audit: type=1400 audit(1571413537.360:8): avc: denied { associate } for pid=2077 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 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2540 at kernel/locking/rtmutex-debug.c:142 debug_rt_mutex_unlock+0xda/0x100 kernel/locking/rtmutex-debug.c:142 DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current)[ 30.852678] Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2540 Comm: syz-executor.0 Not tainted 4.9.141+ #23 ffff8801c8427670 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff ffffffff82a55a00 0000000000000001 0000000000000009 ffff8801c8427730 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x39f kernel/panic.c:179 [] __warn.cold.8+0x2f/0x2f kernel/panic.c:542 [] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565 [] debug_rt_mutex_unlock+0xda/0x100 kernel/locking/rtmutex-debug.c:142 [] rt_mutex_slowunlock+0x21/0x1c0 kernel/locking/rtmutex.c:1366 [] rt_mutex_fastunlock kernel/locking/rtmutex.c:1480 [inline] [] rt_mutex_unlock+0x6e/0xc0 kernel/locking/rtmutex.c:1584 [] exit_pi_state_list+0x34c/0x500 kernel/futex.c:918 [] mm_release+0x2ee/0x410 kernel/fork.c:1103 [] exit_mm kernel/exit.c:469 [inline] [] do_exit+0x399/0x2a50 kernel/exit.c:820 [] do_group_exit+0x111/0x300 kernel/exit.c:937 [] get_signal+0x4e1/0x1460 kernel/signal.c:2321 [] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807 [] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158 [] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] [] syscall_return_slowpath arch/x86/entry/common.c:263 [inline] [] do_syscall_32_irqs_on arch/x86/entry/common.c:334 [inline] [] do_fast_syscall_32+0x6dc/0xa10 arch/x86/entry/common.c:390 [] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..