general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 0 PID: 2797 Comm: syz.9.646 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:do_unlinkat+0x277/0x680 fs/namei.c:4037
Code: 44 89 ee e8 2b 74 ba ff 45 31 ff 41 81 fd 00 00 20 00 41 0f 95 c7 41 83 c7 eb e9 95 00 00 00 49 8d 7e 30 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 6d f0 f4 ff 49 8b 5e 30 4c 89 f0 48 c1 e8
RSP: 0018:ffffc90000ba7e00 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000002
RDX: ffff88810ce562c0 RSI: 0000000000000000 RDI: 0000000000000038
RBP: ffffc90000ba7f00 R08: ffff888135470aff R09: 1ffff11026a8e15f
R10: dffffc0000000000 R11: ffffed1026a8e160 R12: 1ffff11026a8e15a
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888135470ad0
FS:  00007fbb2439b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006dc0 CR3: 000000010ab26000 CR4: 00000000003526b0
DR0: 0000000000000008 DR1: 0000000000000002 DR2: 0000000000000081
DR3: ffffffffefffff14 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_unlinkat fs/namei.c:4085 [inline]
 __se_sys_unlinkat fs/namei.c:4078 [inline]
 __x64_sys_unlinkat+0xd8/0xf0 fs/namei.c:4078
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbb25940819
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:00007fbb2439b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007fbb25bb9fa0 RCX: 00007fbb25940819
RDX: 0000000000000000 RSI: 0000200000000180 RDI: ffffffffffffff9c
RBP: 00007fbb259d6c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbb25bba038 R14: 00007fbb25bb9fa0 R15: 00007fff908e7a68
Modules linked in:
---[ end trace b56f38fe44c6708c ]---
RIP: 0010:do_unlinkat+0x277/0x680 fs/namei.c:4037
Code: 44 89 ee e8 2b 74 ba ff 45 31 ff 41 81 fd 00 00 20 00 41 0f 95 c7 41 83 c7 eb e9 95 00 00 00 49 8d 7e 30 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 6d f0 f4 ff 49 8b 5e 30 4c 89 f0 48 c1 e8
RSP: 0018:ffffc90000ba7e00 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000002
RDX: ffff88810ce562c0 RSI: 0000000000000000 RDI: 0000000000000038
RBP: ffffc90000ba7f00 R08: ffff888135470aff R09: 1ffff11026a8e15f
R10: dffffc0000000000 R11: ffffed1026a8e160 R12: 1ffff11026a8e15a
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888135470ad0
FS:  00007fbb2439b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb9867dfe0 CR3: 000000010ab26000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	44 89 ee             	mov    %r13d,%esi
   3:	e8 2b 74 ba ff       	call   0xffba7433
   8:	45 31 ff             	xor    %r15d,%r15d
   b:	41 81 fd 00 00 20 00 	cmp    $0x200000,%r13d
  12:	41 0f 95 c7          	setne  %r15b
  16:	41 83 c7 eb          	add    $0xffffffeb,%r15d
  1a:	e9 95 00 00 00       	jmp    0xb4
  1f:	49 8d 7e 30          	lea    0x30(%r14),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 6d f0 f4 ff       	call   0xfff4f0a3
  36:	49 8b 5e 30          	mov    0x30(%r14),%rbx
  3a:	4c 89 f0             	mov    %r14,%rax
  3d:	48                   	rex.W
  3e:	c1                   	.byte 0xc1
  3f:	e8                   	.byte 0xe8