Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 21785 Comm: syz.9.1181 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:hfsplus_rename_cat+0x44b/0x1080 fs/hfsplus/catalog.c:482
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 48 4c 8b b4 24 00 01 00 00 48 8b 44 24 18 4c 8d 78 40 4c 89 f8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 28 00 74 08 4c 89 ff e8 e6 a3 88 ff 4c 89 7c 24 58 45 8b
RSP: 0018:ffffc90003e7f760 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff520007cfefc RCX: 0000000000080000
RDX: ffffc9000dab5000 RSI: 00000000000033cc RDI: 00000000000033cd
RBP: ffffc90003e7fbb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888067d7c000 R15: 0000000000000040
FS:  00007f5db01356c0(0000) GS:ffff888126170000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5db0113ff8 CR3: 0000000038d26000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_link+0x383/0x8b0 fs/hfsplus/dir.c:326
 vfs_link+0x518/0x6e0 fs/namei.c:5774
 filename_linkat+0x273/0x600 fs/namei.c:5842
 __do_sys_link fs/namei.c:5875 [inline]
 __se_sys_link+0x55/0x2c0 fs/namei.c:5871
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5db1efce59
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:00007f5db0135028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f5db2176090 RCX: 00007f5db1efce59
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 00002000000001c0
RBP: 00007f5db1f92d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5db2176128 R14: 00007f5db2176090 R15: 00007ffea33ccfb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x44b/0x1080 fs/hfsplus/catalog.c:482
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 48 4c 8b b4 24 00 01 00 00 48 8b 44 24 18 4c 8d 78 40 4c 89 f8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 28 00 74 08 4c 89 ff e8 e6 a3 88 ff 4c 89 7c 24 58 45 8b
RSP: 0018:ffffc90003e7f760 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff520007cfefc RCX: 0000000000080000
RDX: ffffc9000dab5000 RSI: 00000000000033cc RDI: 00000000000033cd
RBP: ffffc90003e7fbb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888067d7c000 R15: 0000000000000040
FS:  00007f5db01356c0(0000) GS:ffff888126170000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5db0113ff8 CR3: 0000000038d26000 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 48       	mov    %ax,0x48(%rsp)
   d:	4c 8b b4 24 00 01 00 	mov    0x100(%rsp),%r14
  14:	00
  15:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  1a:	4c 8d 78 40          	lea    0x40(%rax),%r15
  1e:	4c 89 f8             	mov    %r15,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 68       	mov    %rax,0x68(%rsp)
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 e6 a3 88 ff       	call   0xff88a41f
  39:	4c 89 7c 24 58       	mov    %r15,0x58(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b