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: 5532 Comm: syz.0.17 Not tainted syzkaller #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 30 b1 8b ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc900029ef5e0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff88804fad9000 RCX: ffff88803d248000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029efa10 R08: 0000000006000200 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 6d33a5df6d33a5df R12: dffffc0000000000
R13: 1ffff9200053dec8 R14: 0000000000000040 R15: 0000000000000000
FS:  000055556c968500(0000) GS:ffff88808d007000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6610744260 CR3: 0000000043f1c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfsplus_unlink+0x2e7/0x730 fs/hfsplus/dir.c:376
 hfsplus_rename+0xcb/0x1c0 fs/hfsplus/dir.c:547
 vfs_rename+0xbda/0xf00 fs/namei.c:5129
 do_renameat2+0x6ce/0xa80 fs/namei.c:5278
 __do_sys_rename fs/namei.c:5325 [inline]
 __se_sys_rename fs/namei.c:5323 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5323
 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: 0033:0x7f45ffb8eec9
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:00007ffeb6dd97a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f45ffde5fa0 RCX: 00007f45ffb8eec9
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000200000000080
RBP: 00007f45ffc11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f45ffde5fa0 R14: 00007f45ffde5fa0 R15: 0000000000000002
 </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 30 b1 8b ff 4c 89 74 24 48 45 8b
RSP: 0018:ffffc900029ef5e0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff88804fad9000 RCX: ffff88803d248000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029efa10 R08: 0000000006000200 R09: 6d33a5df14000000
R10: 6d33a5df14000000 R11: 6d33a5df6d33a5df R12: dffffc0000000000
R13: 1ffff9200053dec8 R14: 0000000000000040 R15: 0000000000000000
FS:  000055556c968500(0000) GS:ffff88808d007000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f18ddc15260 CR3: 0000000043f1c000 CR4: 0000000000352ef0
----------------
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 30 b1 8b ff       	call   0xff8bb169
  39:	4c 89 74 24 48       	mov    %r14,0x48(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b