syzbot

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: 5482 Comm: syz-executor Not tainted 6.16.0-syzkaller-11852-g479058002c32 #0 PREEMPT(full) 
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_lvl+0x189/0x250 lib/dump_stack.c:120
 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984
 register_lock_class+0x105/0x320 kernel/locking/lockdep.c:1299
 __lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5112
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
 ocfs2_mark_lockres_freeing+0x125/0x580 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+0x46a/0x8d0 fs/ocfs2/super.c:1866
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd28698ff17
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffeb59c7768 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd286a11c05 RCX: 00007fd28698ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeb59c7820
RBP: 00007ffeb59c7820 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffeb59c88b0
R13: 00007fd286a11c05 R14: 0000000000019118 R15: 00007ffeb59c88f0
 </TASK>
ocfs2: Unmounting device (7,0) on (node local)
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 5482 Comm: syz-executor Not tainted 6.16.0-syzkaller-11852-g479058002c32 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1284 [inline]
RIP: 0010:ocfs2_evict_inode+0x2d05/0x40e0 fs/ocfs2/inode.c:1296
Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 bc 5a 84 fe 4d 01 f4 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 9c 5a 84 fe 48 8b 3b 49 81 c7 88
RSP: 0018:ffffc9000228f340 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff8880007d8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000228fa70 R08: ffff88804269b0b7 R09: 1ffff110084d3616
R10: dffffc0000000000 R11: ffffed10084d3617 R12: fffff52000451e78
R13: ffff88804269b360 R14: dffffc0000000000 R15: ffff88804269b338
FS:  00005555939a0500(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2ce5aa4eb8 CR3: 0000000059a54000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 evict+0x504/0x9c0 fs/inode.c:810
 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:307 [inline]
 ocfs2_free_slot_info+0x79/0x260 fs/ocfs2/slot_map.c:443
 ocfs2_delete_osb+0x58/0x170 fs/ocfs2/super.c:2450
 ocfs2_dismount_volume+0x57a/0x8d0 fs/ocfs2/super.c:1884
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd28698ff17
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffeb59c7768 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd286a11c05 RCX: 00007fd28698ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeb59c7820
RBP: 00007ffeb59c7820 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffeb59c88b0
R13: 00007fd286a11c05 R14: 0000000000019118 R15: 00007ffeb59c88f0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1284 [inline]
RIP: 0010:ocfs2_evict_inode+0x2d05/0x40e0 fs/ocfs2/inode.c:1296
Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 bc 5a 84 fe 4d 01 f4 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 9c 5a 84 fe 48 8b 3b 49 81 c7 88
RSP: 0018:ffffc9000228f340 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff8880007d8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000228fa70 R08: ffff88804269b0b7 R09: 1ffff110084d3616
R10: dffffc0000000000 R11: ffffed10084d3617 R12: fffff52000451e78
R13: ffff88804269b360 R14: dffffc0000000000 R15: ffff88804269b338
FS:  00005555939a0500(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f612dcbd000 CR3: 0000000059a54000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	02 00                	add    (%rax),%al
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	d8 48 c1             	fmuls  -0x3f(%rax)
   8:	e8 03 42 80 3c       	call   0x3c804210
   d:	30 00                	xor    %al,(%rax)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 bc 5a 84 fe       	call   0xfe845ad5
  19:	4d 01 f4             	add    %r14,%r12
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 08          	add    $0x8,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 9c 5a 84 fe       	call   0xfe845ad5
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	49                   	rex.WB
  3d:	81                   	.byte 0x81
  3e:	c7                   	(bad)
  3f:	88                   	.byte 0x88