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: 0 UID: 0 PID: 9884 Comm: syz.7.387 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:1028
 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1343
 __lock_acquire+0x10c/0x2de0 kernel/locking/lockdep.c:5162
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 ocfs2_mark_lockres_freeing+0x163/0x760 fs/ocfs2/dlmglue.c:3530
 ocfs2_simple_drop_lockres fs/ocfs2/dlmglue.c:3586 [inline]
 ocfs2_drop_osb_locks fs/ocfs2/dlmglue.c:3594 [inline]
 ocfs2_dlm_shutdown+0x37/0x240 fs/ocfs2/dlmglue.c:3404
 ocfs2_dismount_volume+0x414/0x820 fs/ocfs2/super.c:1865
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:755
 kill_block_super+0x44/0xa0 fs/super.c:1904
 deactivate_locked_super+0xbc/0x110 fs/super.c:589
 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
 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:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __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:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f182126f3ca
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:00007f181f483e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffec RBX: 00007f181f483ee0 RCX: 00007f182126f3ca
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007f181f483ea0
RBP: 0000200000004440 R08: 00007f181f483ee0 R09: 0000000001200841
R10: 0000000001200841 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f181f483ea0 R14: 0000000000004445 R15: 00002000000002c0
 </TASK>
ocfs2: Unmounting device (7,7) on (node local)