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: 5296 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:hfsplus_rename_cat+0x416/0xea0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 08 4c 8b a4 24 e0 00 00 00 48 8b 44 24 18 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 48 <42> 80 3c 28 00 74 08 4c 89 f7 e8 3b 6c 91 ff 4c 89 74 24 40 45 8b
RSP: 0018:ffffc9000315f240 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff5200062be54 RCX: ffff888021039dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000315f670 R08: ffffc9000315f477 R09: 1ffff9200062be8e
R10: dffffc0000000000 R11: fffff5200062be8f R12: ffff88805c2ba000
R13: dffffc0000000000 R14: 0000000000000040 R15: ffffc9000315f2c0
FS:  00007f4037fe36c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f117ab59000 CR3: 0000000079dcd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_unlink+0x31e/0x800 fs/hfsplus/dir.c:376
 vfs_unlink+0x376/0x600 fs/namei.c:4288
 do_unlinkat+0x391/0x710 fs/namei.c:4356
 do_coredump+0x1ba0/0x2a40 fs/coredump.c:805
 get_signal+0x531/0x12e0 kernel/signal.c:2887
 arch_do_signal_or_restart+0xe6/0x12a0 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_page_fault+0x88/0x100 arch/x86/mm/fault.c:1499
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 002b:0000200000000188 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f4038bfafa0 RCX: 00007f4038981819
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000440
RBP: 00007f4038a17c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f4038bfb038 R14: 00007f4038bfafa0 R15: 00007fffa246dc28
 </TASK>
Modules linked in:
---[ end trace a69f4f822adb6227 ]---
RIP: 0010:hfsplus_rename_cat+0x416/0xea0 fs/hfsplus/catalog.c:480
Code: 0f b7 84 24 40 01 00 00 66 89 44 24 08 4c 8b a4 24 e0 00 00 00 48 8b 44 24 18 4c 8d 70 40 4c 89 f0 48 c1 e8 03 48 89 44 24 48 <42> 80 3c 28 00 74 08 4c 89 f7 e8 3b 6c 91 ff 4c 89 74 24 40 45 8b
RSP: 0018:ffffc9000315f240 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff5200062be54 RCX: ffff888021039dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000315f670 R08: ffffc9000315f477 R09: 1ffff9200062be8e
R10: dffffc0000000000 R11: fffff5200062be8f R12: ffff88805c2ba000
R13: dffffc0000000000 R14: 0000000000000040 R15: ffffc9000315f2c0
FS:  00007f4037fe36c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f117ab4e000 CR3: 0000000079dcd000 CR4: 00000000003506f0
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 08       	mov    %ax,0x8(%rsp)
   d:	4c 8b a4 24 e0 00 00 	mov    0xe0(%rsp),%r12
  14:	00
  15:	48 8b 44 24 18       	mov    0x18(%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 48       	mov    %rax,0x48(%rsp)
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 3b 6c 91 ff       	call   0xff916c74
  39:	4c 89 74 24 40       	mov    %r14,0x40(%rsp)
  3e:	45                   	rex.RB
  3f:	8b                   	.byte 0x8b