------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current)
WARNING: kernel/locking/rtmutex_common.h:193 at debug_rt_mutex_unlock kernel/locking/rtmutex_common.h:193 [inline], CPU#0: syz.3.78/6249
WARNING: kernel/locking/rtmutex_common.h:193 at rt_mutex_slowunlock+0x732/0xa20 kernel/locking/rtmutex.c:1432, CPU#0: syz.3.78/6249
Modules linked in:
CPU: 0 UID: 0 PID: 6249 Comm: syz.3.78 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:debug_rt_mutex_unlock kernel/locking/rtmutex_common.h:193 [inline]
RIP: 0010:rt_mutex_slowunlock+0x739/0xa20 kernel/locking/rtmutex.c:1432
Code: 8a 8f 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 cf 02 00 00 83 3d 7b 65 62 04 00 75 13 48 8d 3d de a9 65 04 48 c7 c6 a0 ff 4c 8b <67> 48 0f b9 3a 90 e9 d1 f9 ff ff 48 8d 3d d5 a9 65 04 67 48 0f b9
RSP: 0018:ffffc9000dbafce0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888061968b38 RCX: 0000000000080000
RDX: ffffc9000f545000 RSI: ffffffff8b4cffa0 RDI: ffffffff8f8e34b0
RBP: ffffc9000dbafdd0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f15e09 R12: dffffc0000000000
R13: 1ffff92001b75fa4 R14: ffff888061968ae8 R15: 0000000000000246
FS:  00007ffa31f356c0(0000) GS:ffff888126117000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f775a098000 CR3: 000000003cc20000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:1034 [inline]
 end_dirop fs/namei.c:2955 [inline]
 end_creating include/linux/namei.h:117 [inline]
 end_creating_path fs/namei.c:4991 [inline]
 filename_mkdirat+0x309/0x520 fs/namei.c:5310
 __do_sys_mkdirat fs/namei.c:5326 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa33cfbcc7
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa31f34e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ffa31f34ee0 RCX: 00007ffa33cfbcc7
RDX: 00000000000001ff RSI: 00002000000001c0 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000001c0
R13: 00007ffa31f34ea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	8a 8f 48 c1 e8 03    	mov    0x3e8c148(%rdi),%cl
   6:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax
   b:	84 c0                	test   %al,%al
   d:	0f 85 cf 02 00 00    	jne    0x2e2
  13:	83 3d 7b 65 62 04 00 	cmpl   $0x0,0x462657b(%rip)        # 0x4626595
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d de a9 65 04 	lea    0x465a9de(%rip),%rdi        # 0x465aa01
  23:	48 c7 c6 a0 ff 4c 8b 	mov    $0xffffffff8b4cffa0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 d1 f9 ff ff       	jmp    0xfffffa06
  35:	48 8d 3d d5 a9 65 04 	lea    0x465a9d5(%rip),%rdi        # 0x465aa11
  3c:	67                   	addr32
  3d:	48                   	rex.W
  3e:	0f                   	.byte 0xf
  3f:	b9                   	.byte 0xb9