loop0: detected capacity change from 0 to 1024
Unable to handle kernel paging request at virtual address dfff800000000008
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
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
[dfff800000000008] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 7903 Comm: syz.0.200 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : hfsplus_rename_cat+0x314/0xd48 fs/hfsplus/catalog.c:480
lr : hfsplus_rename_cat+0x2f8/0xd48 fs/hfsplus/catalog.c:474
sp : ffff80009c3375e0
x29: ffff80009c3379e0 x28: 0000000000000000 x27: ffff700013866ec8
x26: ffff0000cb37cf08 x25: ffff0000d28901d8 x24: ffff0000f9a1a000
x23: dfff800000000000 x22: ffff0000dffd8000 x21: ffff80009c337640
x20: 0000000000000040 x19: 1fffe0001a51203b x18: 00000000ffffffff
x17: ffff80009353a000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000082000000 x12: 0000000000000000
x11: 0000000000080000 x10: 0000000000004024 x9 : 0000000000000200
x8 : 0000000000000008 x7 : 0000000000000000 x6 : 0000000082000000
x5 : ffff80009c337818 x4 : ffff0000e6a953b0 x3 : ffff80009c3377a0
x2 : ffffffffffffffe8 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 hfsplus_rename_cat+0x314/0xd48 fs/hfsplus/catalog.c:480 (P)
 hfsplus_link+0x2cc/0x5b8 fs/hfsplus/dir.c:323
 vfs_link+0x3e0/0x590 fs/namei.c:4854
 do_linkat+0x224/0x48c fs/namei.c:4924
 __do_sys_linkat fs/namei.c:4952 [inline]
 __se_sys_linkat fs/namei.c:4949 [inline]
 __arm64_sys_linkat+0xdc/0xf8 fs/namei.c:4949
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 91010114 b9002be9 d343fe88 f9000fe8 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	91010114 	add	x20, x8, #0x40
   4:	b9002be9 	str	w9, [sp, #40]
   8:	d343fe88 	lsr	x8, x20, #3
   c:	f9000fe8 	str	x8, [sp, #24]
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction