loop4: detected capacity change from 0 to 32768
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode.
overlayfs: upper fs does not support tmpfile.
Unable to handle kernel paging request at virtual address dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000001] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5744 Comm: syz.4.348 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_find_dir_space_id fs/ocfs2/dir.c:3425 [inline]
pc : ocfs2_prepare_dir_for_insert+0x2970/0x4978 fs/ocfs2/dir.c:4305
lr : ocfs2_find_dir_space_id fs/ocfs2/dir.c:3388 [inline]
lr : ocfs2_prepare_dir_for_insert+0x20c8/0x4978 fs/ocfs2/dir.c:4305
sp : ffff8000210c6840
x29: ffff8000210c6f20 x28: dfff800000000000 x27: ffff700004218d28
x26: 0000000000000010 x25: ffff8000210c7300 x24: ffff0000e1c45df8
x23: dfff800000000000 x22: ffff0000dfb12018 x21: 0000000000000009
x20: 0000000000000000 x19: 00000001000001c0 x18: ffff800011babf60
x17: ffff800018381000 x16: ffff800011a529a8 x15: 0000000000000002
x14: 0000000000000002 x13: 0000000000ff0100 x12: 0000000000080000
x11: 000000000004094e x10: ffff80002a093000 x9 : 0000000000000000
x8 : 0000000000000001 x7 : 0000000000000000 x6 : ffff8000210c6e80
x5 : ffff8000210c7300 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000000 x1 : 0000000000000400 x0 : 0000000000000008
Call trace:
 ocfs2_find_dir_space_id fs/ocfs2/dir.c:3425 [inline]
 ocfs2_prepare_dir_for_insert+0x2970/0x4978 fs/ocfs2/dir.c:4305
 __ocfs2_prepare_orphan_dir+0x148/0x2e4 fs/ocfs2/namei.c:2164
 ocfs2_prepare_orphan_dir+0xe8/0x388 fs/ocfs2/namei.c:2207
 ocfs2_unlink+0x994/0x169c fs/ocfs2/namei.c:959
 vfs_unlink+0x2e0/0x4f4 fs/namei.c:4330
 ovl_do_unlink fs/overlayfs/overlayfs.h:157 [inline]
 ovl_cleanup+0xdc/0x194 fs/overlayfs/dir.c:34
 ovl_check_rename_whiteout fs/overlayfs/super.c:1323 [inline]
 ovl_make_workdir fs/overlayfs/super.c:1424 [inline]
 ovl_get_workdir+0x894/0x10bc fs/overlayfs/super.c:1539
 ovl_fill_super+0x1390/0x2240 fs/overlayfs/super.c:2095
 mount_nodev+0x68/0x104 fs/super.c:1489
 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2186
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5bc/0xe80 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: f94037e9 d343fc08 cb0902b3 91002695 (38f76908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f94037e9 	ldr	x9, [sp, #104]
   4:	d343fc08 	lsr	x8, x0, #3
   8:	cb0902b3 	sub	x19, x21, x9
   c:	91002695 	add	x21, x20, #0x9
* 10:	38f76908 	ldrsb	w8, [x8, x23] <-- trapping instruction