hfsplus: bad catalog entry type
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 7362 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-00189-ge8bdb3c8be08 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:hfsplus_rename_cat+0x4b3/0x1090 fs/hfsplus/catalog.c:480
Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 95 8e 78 ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 69 8e 78 ff 48 8b
RSP: 0018:ffffc90004dcf760 EFLAGS: 00010212
RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff888026fa1e00
RDX: ffff888067475000 RSI: 0000000000000000 RDI: ffffc90004dcf880
RBP: ffffc90004dcfbd0 R08: ffffffff8286adc4 R09: 1ffff920009b9f3a
R10: dffffc0000000000 R11: fffff520009b9f3b R12: dffffc0000000000
R13: ffffc90004dcf84c R14: ffffc90004dcf8e0 R15: 1ffff920009b9f00
FS:  0000555588056500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed3a7af78 CR3: 000000006478e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfsplus_unlink+0x308/0x790 fs/hfsplus/dir.c:376
 vfs_unlink+0x367/0x650 fs/namei.c:4469
 do_unlinkat+0x4ae/0x830 fs/namei.c:4533
 __do_sys_unlink fs/namei.c:4581 [inline]
 __se_sys_unlink fs/namei.c:4579 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4579
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1d15d7dcc7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 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:00007ffed3a7b728 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1d15d7dcc7
RDX: 00007ffed3a7b750 RSI: 00007ffed3a7b7e0 RDI: 00007ffed3a7b7e0
RBP: 00007ffed3a7b7e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffed3a7c8d0
R13: 00007f1d15df15fc R14: 00000000000644d0 R15: 00007ffed3a7d990
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x4b3/0x1090 fs/hfsplus/catalog.c:480
Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 95 8e 78 ff 48 8b 94 24 20 01 00 00 48 83 c3 40 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 20 00 48 89 54 24 08 74 0d 48 89 df e8 69 8e 78 ff 48 8b
RSP: 0018:ffffc90004dcf760 EFLAGS: 00010212
RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff888026fa1e00
RDX: ffff888067475000 RSI: 0000000000000000 RDI: ffffc90004dcf880
RBP: ffffc90004dcfbd0 R08: ffffffff8286adc4 R09: 1ffff920009b9f3a
R10: dffffc0000000000 R11: fffff520009b9f3b R12: dffffc0000000000
R13: ffffc90004dcf84c R14: ffffc90004dcf8e0 R15: 1ffff920009b9f00
FS:  0000555588056500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed3a7af78 CR3: 000000006478e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   5:	48 8b 5c 24 20       	mov    0x20(%rsp),%rbx
   a:	74 05                	je     0x11
   c:	e8 95 8e 78 ff       	call   0xff788ea6
  11:	48 8b 94 24 20 01 00 	mov    0x120(%rsp),%rdx
  18:	00
  19:	48 83 c3 40          	add    $0x40,%rbx
  1d:	48 89 d8             	mov    %rbx,%rax
  20:	48 c1 e8 03          	shr    $0x3,%rax
  24:	48 89 44 24 68       	mov    %rax,0x68(%rsp)
* 29:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2e:	48 89 54 24 08       	mov    %rdx,0x8(%rsp)
  33:	74 0d                	je     0x42
  35:	48 89 df             	mov    %rbx,%rdi
  38:	e8 69 8e 78 ff       	call   0xff788ea6
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b