loop9: detected capacity change from 0 to 32768
ocfs2: Readonly device (7,9) detected. Cluster services will not be used for this mount. Recovery will be skipped.
ocfs2: Mounting device (7,9) on (node local, slot 65535) with ordered data mode.
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 19205 Comm: syz.9.1822 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299
 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 ocfs2_mark_lockres_freeing+0x171/0x820 fs/ocfs2/dlmglue.c:3513
 ocfs2_simple_drop_lockres fs/ocfs2/dlmglue.c:3569 [inline]
 ocfs2_drop_osb_locks fs/ocfs2/dlmglue.c:3577 [inline]
 ocfs2_dlm_shutdown+0x3a/0x240 fs/ocfs2/dlmglue.c:3387
 ocfs2_dismount_volume+0x468/0x8d0 fs/ocfs2/super.c:1866
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xf3/0x4d0 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff26df3e0ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 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:00007ff26c18de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffec RBX: 00007ff26c18dee0 RCX: 00007ff26df3e0ca
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007ff26c18dea0
RBP: 0000200000004440 R08: 00007ff26c18dee0 R09: 00000000000008c1
R10: 00000000000008c1 R11: 0000000000000246 R12: 0000200000000040
R13: 00007ff26c18dea0 R14: 0000000000004437 R15: 0000200000000180
 </TASK>
ocfs2: Unmounting device (7,9) on (node local)