loop0: detected capacity change from 0 to 1024
general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 PID: 5057 Comm: syz-executor122 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 fs/hfsplus/catalog.c:480
Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 65 5e 7b 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 39 5e 7b ff 48 8b
RSP: 0018:ffffc90004017740 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff88801eccbc00
RDX: ffff8880792e5000 RSI: 0000000000000000 RDI: ffffc90004017860
RBP: ffffc90004017bb0 R08: ffffffff827a0ca4 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 0000a5df6d33a5df R12: dffffc0000000000
R13: ffffc9000401782c R14: ffffc900040178c0 R15: 1ffff92000802efc
FS:  00005555835c5380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6b929000 CR3: 000000007b13e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_unlink+0x308/0x790 fs/hfsplus/dir.c:376
 vfs_unlink+0x365/0x600 fs/namei.c:4338
 do_unlinkat+0x4ae/0x830 fs/namei.c:4402
 __do_sys_unlinkat fs/namei.c:4445 [inline]
 __se_sys_unlinkat fs/namei.c:4438 [inline]
 __x64_sys_unlinkat+0xce/0xf0 fs/namei.c:4438
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f1bca3ef789
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc6b928828 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f1bca3ef789
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 00007f1bca462610 R08: 0000000000000000 R09: 00007ffc6b9289f8
R10: 00007ffc6b9286f0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc6b9289e8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x4b3/0x1050 fs/hfsplus/catalog.c:480
Code: 60 42 80 3c 20 00 48 8b 5c 24 20 74 05 e8 65 5e 7b 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 39 5e 7b ff 48 8b
RSP: 0018:ffffc90004017740 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000040 RCX: ffff88801eccbc00
RDX: ffff8880792e5000 RSI: 0000000000000000 RDI: ffffc90004017860
RBP: ffffc90004017bb0 R08: ffffffff827a0ca4 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 0000a5df6d33a5df R12: dffffc0000000000
R13: ffffc9000401782c R14: ffffc900040178c0 R15: 1ffff92000802efc
FS:  00005555835c5380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6b929000 CR3: 000000007b13e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 65 5e 7b ff       	call   0xff7b5e76
  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 39 5e 7b ff       	call   0xff7b5e76
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b