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: 8081 Comm: syz.6.148 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hfsplus_rename_cat+0x43f/0x1070 fs/hfsplus/catalog.c:471
Code: 0f b7 84 24 60 01 00 00 66 89 44 24[  155.985580][ T8081] Code: 0f b7 84 24 60 01 00 00 66 89 44 24 18 4c 8b b4 24 00 01 00 00 48 8b 44 24 28 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 38 00 74 08 4c 89 e7 e8 c2 7d 87 ff 4c 89 64 24 58 45 8b
RSP: 0018:ffffc9001683f780 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff52002d07f00 RCX: 0000000000080000
RDX: ffffc900042a1000 RSI: 00000000000007b2 RDI: 00000000000007b3
RBP: ffffc9001683fbd0 R08: 0000000000000000 R09: 0000000000000000
R10: 1f6f61e619000000 R11: 1f6f61e61f6f61e6 R12: 0000000000000040
R13: ffff8880299ba001 R14: ffff8880299ba000 R15: dffffc0000000000
FS:  00007f4fb1fde6c0(0000) GS:ffff88812611d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ff48f8000 CR3: 0000000038610000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_link+0x39f/0x930 fs/hfsplus/dir.c:320
 vfs_link+0x491/0x650 fs/namei.c:5787
 filename_linkat+0x26d/0x5f0 fs/namei.c:5855
 __do_sys_link fs/namei.c:5888 [inline]
 __se_sys_link+0x55/0x2c0 fs/namei.c:5884
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4fb3d8ce59
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:00007f4fb1fde028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f4fb4005fa0 RCX: 00007f4fb3d8ce59
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 00002000000004c0
RBP: 00007f4fb3e22e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4fb4006038 R14: 00007f4fb4005fa0 R15: 00007ffc76f78e68
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x43f/0x1070 fs/hfsplus/catalog.c:471
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 18 4c 8b b4 24 00 01 00 00 48 8b 44 24 28 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 38 00 74 08 4c 89 e7 e8 c2 7d 87 ff 4c 89 64 24 58 45 8b
RSP: 0018:ffffc9001683f780 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff52002d07f00 RCX: 0000000000080000
RDX: ffffc900042a1000 RSI: 00000000000007b2 RDI: 00000000000007b3
RBP: ffffc9001683fbd0 R08: 0000000000000000 R09: 0000000000000000
R10: 1f6f61e619000000 R11: 1f6f61e61f6f61e6 R12: 0000000000000040
R13: ffff8880299ba001 R14: ffff8880299ba000 R15: dffffc0000000000
FS:  00007f4fb1fde6c0(0000) GS:ffff88812611d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ff48f6048 CR3: 0000000038610000 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 18       	mov    %ax,0x18(%rsp)
   d:	4c 8b b4 24 00 01 00 	mov    0x100(%rsp),%r14
  14:	00
  15:	48 8b 44 24 28       	mov    0x28(%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 68       	mov    %rax,0x68(%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 c2 7d 87 ff       	call   0xff877dfb
  39:	4c 89 64 24 58       	mov    %r12,0x58(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b