loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
(syz.0.0,5125,0):ocfs2_read_blocks:240 ERROR: status = -12
=====================================
WARNING: bad unlock balance detected!
6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0 Not tainted
-------------------------------------
syz.0.0/5125 is trying to release lock (&oi->ip_io_mutex) at:
[<ffffffff8380b596>] ocfs2_read_blocks+0x11c6/0x1620 fs/ocfs2/buffer_head_io.c:394
but there are no more locks to release!

other info that might help us debug this:
2 locks held by syz.0.0/5125:
 #0: ffff88804089ce58 (&osb->obs_trim_fs_mutex){+.+.}-{3:3}, at: ocfs2_trim_fs_lock_res_init+0x35/0x4d0 fs/ocfs2/dlmglue.c:702
 #1: ffff88800e455100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
 #1: ffff88800e455100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_trim_mainbm fs/ocfs2/alloc.c:7564 [inline]
 #1: ffff88800e455100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_trim_fs+0xb26/0x2940 fs/ocfs2/alloc.c:7702

stack backtrace:
CPU: 0 UID: 0 PID: 5125 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 print_unlock_imbalance_bug+0x256/0x2c0 kernel/locking/lockdep.c:5199
 __lock_release kernel/locking/lockdep.c:5436 [inline]
 lock_release+0x5cb/0xa30 kernel/locking/lockdep.c:5780
 __mutex_unlock_slowpath+0xe2/0x750 kernel/locking/mutex.c:912
 ocfs2_read_blocks+0x11c6/0x1620 fs/ocfs2/buffer_head_io.c:394
 ocfs2_read_block fs/ocfs2/buffer_head_io.h:52 [inline]
 ocfs2_read_group_descriptor+0xe7/0x240 fs/ocfs2/suballoc.c:303
 ocfs2_trim_mainbm fs/ocfs2/alloc.c:7606 [inline]
 ocfs2_trim_fs+0xeb3/0x2940 fs/ocfs2/alloc.c:7702
 ocfs2_ioctl+0x71d/0x7e0 fs/ocfs2/ioctl.c:936
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbc0217def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbc01fff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbc02335f80 RCX: 00007fbc0217def9
RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000007
RBP: 00007fbc021f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbc02335f80 R15: 00007ffc6cd50718
 </TASK>
(syz.0.0,5125,0):ocfs2_trim_mainbm:7610 ERROR: status = -12
ocfs2: Unmounting device (7,0) on (node local)