loop0: 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: 6075 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:hfsplus_rename_cat+0x438/0x1000 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 50 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 70 <42> 80 3c 38 00 74 08 4c 89 e7 e8 59 8b 8a ff 4c 89 64 24 78 45 8b
RSP: 0018:ffffc90003d277c0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff520007a4f08 RCX: ffff8880274f3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003d27c10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000040
R13: ffffc90003d27860 R14: ffff88803784d000 R15: dffffc0000000000
FS:  000055556479c500(0000) GS:ffff888126695000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fd8db79c0 CR3: 0000000045a48000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_unlink+0x2ff/0x930 fs/hfsplus/dir.c:397
 vfs_unlink+0x272/0x6d0 fs/namei.c:5470
 filename_unlinkat+0x3d3/0x610 fs/namei.c:5540
 __do_sys_unlinkat fs/namei.c:5569 [inline]
 __se_sys_unlinkat+0x83/0x1a0 fs/namei.c:5561
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa06b71bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd2dba36f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007fa06b995fa0 RCX: 00007fa06b71bf79
RDX: 0000000000000000 RSI: 0000200000000380 RDI: ffffffffffffff9c
RBP: 00007fa06b7b27e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa06b995fac R14: 00007fa06b995fa0 R15: 00007fa06b995fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x438/0x1000 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 50 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 70 <42> 80 3c 38 00 74 08 4c 89 e7 e8 59 8b 8a ff 4c 89 64 24 78 45 8b
RSP: 0018:ffffc90003d277c0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff520007a4f08 RCX: ffff8880274f3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003d27c10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000040
R13: ffffc90003d27860 R14: ffff88803784d000 R15: dffffc0000000000
FS:  000055556479c500(0000) GS:ffff888126695000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fd8db79c0 CR3: 0000000045a48000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	0f b7 84 24 60 01 00 	movzwl 0x160(%rsp),%eax
   7:	00
   8:	66 89 44 24 50       	mov    %ax,0x50(%rsp)
   d:	4c 8b b4 24 00 01 00 	mov    0x100(%rsp),%r14
  14:	00
  15:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
  1a:	4c 8d 60 40          	lea    0x40(%rax),%r12
  1e:	4c 89 e0             	mov    %r12,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 70       	mov    %rax,0x70(%rsp)
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 59 8b 8a ff       	call   0xff8a8b92
  39:	4c 89 64 24 78       	mov    %r12,0x78(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b