loop3: detected capacity change from 0 to 1024
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 UID: 0 PID: 6202 Comm: syz.3.49 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:hfsplus_rename_cat+0x3b1/0xde0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 18 48 8b 9c 24 e0 00 00 00 48 8b 44 24 08 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 40 <42> 80 3c 20 00 74 08 4c 89 f7 e8 60 89 90 ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc9000c6177c0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff88805e49a000 RCX: 0000000000080000
RDX: ffffc9000d71a000 RSI: 0000000000000600 RDI: 0000000000000601
RBP: ffffc9000c617bf0 R08: 0000000000000000 R09: 0000000000000000
R10: ff77e7e419000000 R11: ff77e7e4ff77e7e4 R12: dffffc0000000000
R13: 1ffff920018c2f04 R14: 0000000000000040 R15: 0000000000000000
FS:  00007efd9d11e6c0(0000) GS:ffff8881269bf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f284ed4 CR3: 0000000026438000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_unlink+0x2ea/0x740 fs/hfsplus/dir.c:376
 vfs_unlink+0x39a/0x660 fs/namei.c:4586
 do_unlinkat+0x345/0x570 fs/namei.c:4650
 __do_sys_unlinkat fs/namei.c:4691 [inline]
 __se_sys_unlinkat fs/namei.c:4684 [inline]
 __x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4684
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd9eebeba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efd9d11e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007efd9f105fa0 RCX: 00007efd9eebeba9
RDX: 0000000000000000 RSI: 0000200000000c40 RDI: ffffffffffffff9c
RBP: 00007efd9ef41e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd9f106038 R14: 00007efd9f105fa0 R15: 00007ffc5c55e1b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x3b1/0xde0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 18 48 8b 9c 24 e0 00 00 00 48 8b 44 24 08 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 40 <42> 80 3c 20 00 74 08 4c 89 f7 e8 60 89 90 ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc9000c6177c0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff88805e49a000 RCX: 0000000000080000
RDX: ffffc9000d71a000 RSI: 0000000000000600 RDI: 0000000000000601
RBP: ffffc9000c617bf0 R08: 0000000000000000 R09: 0000000000000000
R10: ff77e7e419000000 R11: ff77e7e4ff77e7e4 R12: dffffc0000000000
R13: 1ffff920018c2f04 R14: 0000000000000040 R15: 0000000000000000
FS:  00007efd9d11e6c0(0000) GS:ffff8881269bf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f284ed4 CR3: 0000000026438000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	0f b7 84 24 40 01 00 	movzwl 0x140(%rsp),%eax
   7:	00
   8:	66 89 44 24 18       	mov    %ax,0x18(%rsp)
   d:	48 8b 9c 24 e0 00 00 	mov    0xe0(%rsp),%rbx
  14:	00
  15:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  1a:	4c 8d 70 40          	lea    0x40(%rax),%r14
  1e:	4c 89 f0             	mov    %r14,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 60 89 90 ff       	call   0xff908999
  39:	4c 89 74 24 48       	mov    %r14,0x48(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b