loop4: detected capacity change from 0 to 512
loop4: detected capacity change from 0 to 4096
loop4: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode.
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: 0 UID: 0 PID: 6982 Comm: syz.4.101 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #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_find_dir_space_id fs/ocfs2/dir.c:3407 [inline]
pc : ocfs2_prepare_dir_for_insert+0x2a30/0x4dec fs/ocfs2/dir.c:4271
lr : ocfs2_find_dir_space_id fs/ocfs2/dir.c:3370 [inline]
lr : ocfs2_prepare_dir_for_insert+0x286c/0x4dec fs/ocfs2/dir.c:4271
sp : ffff8000a1db6c60
x29: ffff8000a1db7500 x28: ffff7000143b6ed0 x27: ffff0000d6abc000
x26: dfff800000000000 x25: ffff8000a1db7460 x24: ffff0000dd23b338
x23: 0000000000000003 x22: 0000000000000010 x21: ffff0000f1f24200
x20: 0000000000000009 x19: 0000000000000000 x18: ffff8000a1db7980
x17: 000000000002cb47 x16: ffff80008b3ead08 x15: 0000000000000001
x14: 1fffe0001ba47671 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000040000 x10: 00000000000015bf x9 : ffff8000a4fe0000
x8 : 0000000000000001 x7 : 0000000000000000 x6 : ffff8000a1db7380
x5 : ffff8000a1db77b0 x4 : 0000000000000000 x3 : ffff8000820309b0
x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000008
Call trace:
 ocfs2_prepare_dir_for_insert+0x2a30/0x4dec fs/ocfs2/dir.c:4271 (P)
 ocfs2_find_dir_space_id fs/ocfs2/dir.c:3370 [inline] (L)
 ocfs2_prepare_dir_for_insert+0x286c/0x4dec fs/ocfs2/dir.c:4271 (L)
 ocfs2_mknod+0x830/0x243c fs/ocfs2/namei.c:292
 ocfs2_mkdir+0x194/0x4e0 fs/ocfs2/namei.c:655
 vfs_mkdir+0x27c/0x410 fs/namei.c:4257
 do_mkdirat+0x248/0x574 fs/namei.c:4280
 __do_sys_mkdirat fs/namei.c:4295 [inline]
 __se_sys_mkdirat fs/namei.c:4293 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4293
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 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: 91002674 d343fc08 f940e7f9 f940f7f8 (38fa6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	91002674 	add	x20, x19, #0x9
   4:	d343fc08 	lsr	x8, x0, #3
   8:	f940e7f9 	ldr	x25, [sp, #456]
   c:	f940f7f8 	ldr	x24, [sp, #488]
* 10:	38fa6908 	ldrsb	w8, [x8, x26] <-- trapping instruction