loop0: detected capacity change from 0 to 1024
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 5311 Comm: syz-executor252 Not tainted 6.15.0-syzkaller-11796-g5abc7438f1e9 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:hfsplus_rename_cat+0x3b1/0xde0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 18 48 8b 9c 24 e0 00 00 00 48 8b 44 24 08 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 40 <42> 80 3c 20 00 74 08 4c 89 f7 e8 50 96 8c ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc9000d3ff780 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888035b42000 RCX: ffff888000282440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d3ffbb0 R08: 0000000006000200 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 6d33a5df6d33a5df R12: dffffc0000000000
R13: 1ffff92001a7fefc R14: 0000000000000040 R15: 0000000000000000
FS:  000055557be4e380(0000) GS:ffff88808d25c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11e0e47000 CR3: 0000000043fc8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_link+0x359/0x6a0 fs/hfsplus/dir.c:323
 vfs_link+0x4ea/0x6e0 fs/namei.c:4854
 do_linkat+0x272/0x560 fs/namei.c:4924
 __do_sys_link fs/namei.c:4958 [inline]
 __se_sys_link fs/namei.c:4956 [inline]
 __x64_sys_link+0x82/0x90 fs/namei.c:4956
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff9e94ddc19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007fff6010c098 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 0000200000000740 RCX: 00007ff9e94ddc19
RDX: 00007ff9e94dcef7 RSI: 0000200000000300 RDI: 0000200000000200
RBP: 0030656c69662f2e R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff6010bf60 R11: 0000000000000246 R12: 00007fff6010c0d0
R13: 00007fff6010c2f8 R14: 431bde82d7b634db R15: 00007ff9e952603b
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x3b1/0xde0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 18 48 8b 9c 24 e0 00 00 00 48 8b 44 24 08 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 40 <42> 80 3c 20 00 74 08 4c 89 f7 e8 50 96 8c ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc9000d3ff780 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888035b42000 RCX: ffff888000282440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d3ffbb0 R08: 0000000006000200 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 6d33a5df6d33a5df R12: dffffc0000000000
R13: 1ffff92001a7fefc R14: 0000000000000040 R15: 0000000000000000
FS:  000055557be4e380(0000) GS:ffff88808d25c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11e0e3b000 CR3: 0000000043fc8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f b7 84 24 40 01 00 	movzwl 0x140(%rsp),%eax
   7:	00
   8:	66 89 44 24 18       	mov    %ax,0x18(%rsp)
   d:	48 8b 9c 24 e0 00 00 	mov    0xe0(%rsp),%rbx
  14:	00
  15:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  1a:	4c 8d 70 40          	lea    0x40(%rax),%r14
  1e:	4c 89 f0             	mov    %r14,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 50 96 8c ff       	call   0xff8c9689
  39:	4c 89 74 24 48       	mov    %r14,0x48(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b