loop0: detected capacity change from 0 to 32768
ocfs2: Readonly device (7,0) detected. Cluster services will not be used for this mount. Recovery will be skipped.
ocfs2: Mounting device (7,0) on (node local, slot 65535) with ordered data mode.
loop0: detected capacity change from 32768 to 32767
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#0: syz.0.0/5326
WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x1303/0x1550 kernel/locking/mutex.c:820, CPU#0: syz.0.0/5326
Modules linked in:
CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x130a/0x1550 kernel/locking/mutex.c:820
Code: 30 90 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 1b 02 00 00 83 3d da b2 85 04 00 75 13 48 8d 3d 8d ca 88 04 48 c7 c6 a0 da cc 8b <67> 48 0f b9 3a 90 e9 50 ee ff ff 90 0f 0b 90 e9 4e f2 ff ff 90 0f
RSP: 0018:ffffc90003617760 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88801f81ca00
RDX: 0000000000000000 RSI: ffffffff8bccdaa0 RDI: ffffffff90340680
RBP: ffffc90003617920 R08: ffffffff9030eec3 R09: 1ffffffff2061dd8
R10: dffffc0000000000 R11: fffffbfff2061dd9 R12: ffff888036a20de0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006c2f04
FS:  00007ff99d42d6c0(0000) GS:ffff88808c888000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9907c2000 CR3: 00000000368fa000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_trim_fs_lock_res_init+0x33/0x1c0 fs/ocfs2/dlmglue.c:703
 ocfs2_trim_fs+0x138/0x2480 fs/ocfs2/alloc.c:7692
 ocfs2_ioctl+0x6c1/0x7e0 fs/ocfs2/ioctl.c:948
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff99c59cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ff99d42cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff99c816090 RCX: 00007ff99c59cdd9
RDX: 00002000000000c0 RSI: 00000000c0185879 RDI: 000000000000000c
RBP: 00007ff99c632d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff99c816128 R14: 00007ff99c816090 R15: 00007ffd10705868
 </TASK>
----------------
Code disassembly (best guess):
   0:	30 90 48 c1 e8 03    	xor    %dl,0x3e8c148(%rax)
   6:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
   b:	84 c0                	test   %al,%al
   d:	0f 85 1b 02 00 00    	jne    0x22e
  13:	83 3d da b2 85 04 00 	cmpl   $0x0,0x485b2da(%rip)        # 0x485b2f4
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d 8d ca 88 04 	lea    0x488ca8d(%rip),%rdi        # 0x488cab0
  23:	48 c7 c6 a0 da cc 8b 	mov    $0xffffffff8bccdaa0,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 50 ee ff ff       	jmp    0xffffee85
  35:	90                   	nop
  36:	0f 0b                	ud2
  38:	90                   	nop
  39:	e9 4e f2 ff ff       	jmp    0xfffff28c
  3e:	90                   	nop
  3f:	0f                   	.byte 0xf