general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 PID: 5370 Comm: syz.4.226 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:hfsplus_rename_cat+0x424/0xe90 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 28 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 60 <42> 80 3c 38 00 74 08 4c 89 e7 e8 dd 3d 91 ff 4c 89 64 24 68 45 8b
RSP: 0018:ffffc900038ff180 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff5200071fe40 RCX: ffff8880276a5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900038ff5d0 R08: ffffc900038ff3d7 R09: 1ffff9200071fe7a
R10: dffffc0000000000 R11: fffff5200071fe7b R12: 0000000000000040
R13: ffffc900038ff220 R14: ffff888024cc7000 R15: dffffc0000000000
FS:  00007ff2423ce6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f7227bf00 CR3: 000000004bcd1000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_unlink+0x2f7/0x7b0 fs/hfsplus/dir.c:376
 vfs_unlink+0x385/0x600 fs/namei.c:4288
 do_unlinkat+0x391/0x710 fs/namei.c:4356
 do_coredump+0x1bb1/0x2ac0 fs/coredump.c:805
 get_signal+0x40a/0x12c0 kernel/signal.c:2886
 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320
 exc_general_protection+0x1e4/0x270 arch/x86/kernel/traps.c:562
 asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:600
RIP: 0033:0x7ff244195821
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000200000000220 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff24440f090 RCX: 00007ff244195819
RDX: 0000200000000280 RSI: 0000200000000220 RDI: 0000000000000440
RBP: 00007ff24422bc91 R08: 00002000000003c0 R09: 00002000000003c0
R10: 00002000000002c0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ff24440f128 R14: 00007ff24440f090 R15: 00007ffe442355e8
 </TASK>
Modules linked in:
---[ end trace 6e4146c58fa4e8cb ]---
RIP: 0010:hfsplus_rename_cat+0x424/0xe90 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 28 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 60 <42> 80 3c 38 00 74 08 4c 89 e7 e8 dd 3d 91 ff 4c 89 64 24 68 45 8b
RSP: 0018:ffffc900038ff180 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff5200071fe40 RCX: ffff8880276a5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900038ff5d0 R08: ffffc900038ff3d7 R09: 1ffff9200071fe7a
R10: dffffc0000000000 R11: fffff5200071fe7b R12: 0000000000000040
R13: ffffc900038ff220 R14: ffff888024cc7000 R15: dffffc0000000000
FS:  00007ff2423ce6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555588036a28 CR3: 000000004bcd1000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f b7 84 24 60 01 00 	movzwl 0x160(%rsp),%eax
   7:	00
   8:	66 89 44 24 28       	mov    %ax,0x28(%rsp)
   d:	4c 8b b4 24 00 01 00 	mov    0x100(%rsp),%r14
  14:	00
  15:	48 8b 44 24 38       	mov    0x38(%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 60       	mov    %rax,0x60(%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 dd 3d 91 ff       	call   0xff913e16
  39:	4c 89 64 24 68       	mov    %r12,0x68(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b