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: 6427 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 assign_lock_key+0x278/0x2b0 kernel/locking/lockdep.c:981
 register_lock_class+0x144/0x6b4 kernel/locking/lockdep.c:1295
 __lock_acquire+0x18c/0x7904 kernel/locking/lockdep.c:5101
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 ocfs2_mark_lockres_freeing+0x164/0x788 fs/ocfs2/dlmglue.c:3514
 ocfs2_simple_drop_lockres fs/ocfs2/dlmglue.c:3570 [inline]
 ocfs2_drop_osb_locks fs/ocfs2/dlmglue.c:3578 [inline]
 ocfs2_dlm_shutdown+0x44/0x230 fs/ocfs2/dlmglue.c:3388
 ocfs2_dismount_volume+0x3fc/0x920 fs/ocfs2/super.c:1918
 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608
 generic_shutdown_super+0x12c/0x2bc fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380
 task_work_run+0x230/0x2e0 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
ocfs2: Unmounting device (7,2) on (node local)
Unable to handle kernel paging request at virtual address dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000001] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6427 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_clear_inode fs/ocfs2/inode.c:1208 [inline]
pc : ocfs2_evict_inode+0xd40/0x4660 fs/ocfs2/inode.c:1220
lr : ocfs2_clear_inode fs/ocfs2/inode.c:1199 [inline]
lr : ocfs2_evict_inode+0xccc/0x4660 fs/ocfs2/inode.c:1220
sp : ffff8000a3fd7080
x29: ffff8000a3fd77a0 x28: ffff7000147fae24 x27: 1fffe0001e2d5114
x26: ffff0000f16a88a0 x25: 1fffe0001e2d5118 x24: ffff8000a3fd7120
x23: ffff0000f16a8000 x22: ffff00010797c000 x21: dfff800000000000
x20: ffff00010797c290 x19: 0000000000000008 x18: 1fffe00036700a7e
x17: ffff80008f99d000 x16: ffff800083275834 x15: 0000000000000001
x14: 1fffe0001e2d50be x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000001 x10: 0000000000ff0100 x9 : ffff0000f16a8878
x8 : 0000000000000001 x7 : 0000000000000000 x6 : ffff8000821dce54
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008045c3b0
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 ocfs2_clear_inode fs/ocfs2/inode.c:1208 [inline] (P)
 ocfs2_evict_inode+0xd40/0x4660 fs/ocfs2/inode.c:1220 (P)
 evict+0x444/0x978 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput+0x740/0x8e8 fs/inode.c:1972
 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:307 [inline]
 ocfs2_free_slot_info+0x80/0x20c fs/ocfs2/slot_map.c:443
 ocfs2_delete_osb+0x64/0x150 fs/ocfs2/super.c:2502
 ocfs2_dismount_volume+0x4d8/0x920 fs/ocfs2/super.c:1936
 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608
 generic_shutdown_super+0x12c/0x2bc fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380
 task_work_run+0x230/0x2e0 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 97a850cd f9400288 91002113 d343fe68 (38756908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97a850cd 	bl	0xfffffffffea14334
   4:	f9400288 	ldr	x8, [x20]
   8:	91002113 	add	x19, x8, #0x8
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38756908 	ldrb	w8, [x8, x21] <-- trapping instruction