Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 UID: 0 PID: 8748 Comm: syz.4.311 Not tainted 6.13.0-rc2-syzkaller-00036-g231825b2e1ff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
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 d5 33 86 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 a9 33 86 ff 48 8b
RSP: 0018:ffffc90003217720 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000040 RCX: 0000000000080000
RDX: ffff888030293000 RSI: 00000000000007b3 RDI: ffffc90003217840
RBP: ffffc90003217b90 R08: ffffffff827d75e4 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc9000321780c R14: ffffc900032178a0 R15: 1ffff92000642ef8
FS:  00007f0a21f956c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a21f94f98 CR3: 0000000024ea2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_link+0x3ab/0x800 fs/hfsplus/dir.c:323
 vfs_link+0x4f0/0x6e0 fs/namei.c:4793
 do_linkat+0x555/0x6f0 fs/namei.c:4863
 __do_sys_link fs/namei.c:4897 [inline]
 __se_sys_link fs/namei.c:4895 [inline]
 __x64_sys_link+0x82/0x90 fs/namei.c:4895
 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: 0033:0x7f0a21185d19
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:00007f0a21f95038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f0a21376080 RCX: 00007f0a21185d19
RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000020000200
RBP: 00007f0a21201a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0a21376080 R15: 00007fffc78ca078
 </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 d5 33 86 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 a9 33 86 ff 48 8b
RSP: 0018:ffffc90003217720 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000040 RCX: 0000000000080000
RDX: ffff888030293000 RSI: 00000000000007b3 RDI: ffffc90003217840
RBP: ffffc90003217b90 R08: ffffffff827d75e4 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc9000321780c R14: ffffc900032178a0 R15: 1ffff92000642ef8
FS:  00007f0a21f956c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62446ffe00 CR3: 0000000024ea2000 CR4: 00000000003526f0
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 d5 33 86 ff       	call   0xff8633e6
  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 a9 33 86 ff       	call   0xff8633e6
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b