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WARNING in debug_rt_mutex_unlock

Status: auto-closed as invalid on 2019/02/22 14:34
First crash: 2228d, last: 2228d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in debug_rt_mutex_unlock kernel 1 2234d 2234d 0/26 closed as invalid on 2018/07/17 14:19

Sample crash report:
audit: type=1400 audit(1521037600.194:32): avc:  denied  { ioctl } for  pid=9104 comm="syz-executor1" path="socket:[21186]" dev="sockfs" ino=21186 ioctlcmd=0x8903 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
audit: type=1401 audit(1521037600.234:33): op=fscreate invalid_context=400300206600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9126 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)
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 9126 Comm: syz-executor6 Not tainted 4.9.87-g97d7f1c #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d72176d0 ffffffff81d95a19 ffffffff83a480c0 ffff8801d72177a8
 ffffffff83a61200 ffffffff8124865a 0000000000000009 ffff8801d7217798
 ffffffff8142f7e1 0000000041b58ab3 ffffffff8418b658 ffffffff8142f625
Call Trace:
 [<ffffffff81d95a19>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95a19>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f7e1>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff81131334>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff81131414>] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565
 [<ffffffff8124865a>] debug_rt_mutex_unlock+0xda/0x100 kernel/locking/rtmutex-debug.c:142
 [<ffffffff838b0591>] rt_mutex_slowunlock+0x21/0x1c0 kernel/locking/rtmutex.c:1341
 [<ffffffff838b131e>] rt_mutex_fastunlock kernel/locking/rtmutex.c:1455 [inline]
 [<ffffffff838b131e>] rt_mutex_unlock+0x6e/0xc0 kernel/locking/rtmutex.c:1559
 [<ffffffff812e399b>] exit_pi_state_list+0x2db/0x400 kernel/futex.c:918
 [<ffffffff81128f76>] mm_release+0x2e6/0x400 kernel/fork.c:1097
 [<ffffffff8113bffa>] exit_mm kernel/exit.c:469 [inline]
 [<ffffffff8113bffa>] do_exit+0x3aa/0x2a40 kernel/exit.c:820
 [<ffffffff81142b48>] do_group_exit+0x108/0x320 kernel/exit.c:937
 [<ffffffff811659c4>] get_signal+0x4d4/0x14e0 kernel/signal.c:2317
 [<ffffffff81052c87>] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807
 [<ffffffff81003a31>] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157
 [<ffffffff81007261>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
 [<ffffffff81007261>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
 [<ffffffff81007261>] do_syscall_32_irqs_on arch/x86/entry/common.c:331 [inline]
 [<ffffffff81007261>] do_fast_syscall_32+0x5c1/0x870 arch/x86/entry/common.c:387
 [<ffffffff838b8250>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/03/14 14:26 https://android.googlesource.com/kernel/common android-4.9 97d7f1c7c0f0 08dacaa0 .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.