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: 27893 Comm: syz-executor.4 Tainted: G        W         5.10.209-syzkaller-00039-g8d3bb9cb3b7d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:do_unlinkat+0x3b2/0x8b0 fs/namei.c:4035
Code: de e8 a2 aa b6 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 bf ec ff ff ff 41 29 c7 e9 99 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 22 22 f4 ff 49 8b 45 30 48 89 44 24 28 4c
RSP: 0018:ffffc90003267da0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffff88810e6a62c0
RDX: ffff88810e6a62c0 RSI: 0000000000000000 RDI: 0000000000000040
RBP: ffffc90003267f18 R08: ffffffff81b40193 R09: ffffed102676e7c6
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000010 R14: 1ffff1102676e7c0 R15: dffffc0000000000
FS:  00007fbca4d326c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbca4ccfd58 CR3: 0000000127344000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_unlink fs/namei.c:4088 [inline]
 __se_sys_unlink fs/namei.c:4086 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4086
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7fbca6021ea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbca4d320c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007fbca61501f0 RCX: 00007fbca6021ea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007fbca606e4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fbca61501f0 R15: 00007ffffbf4b568
Modules linked in:
---[ end trace 3fc57fe9ca370765 ]---
RIP: 0010:do_unlinkat+0x3b2/0x8b0 fs/namei.c:4035
Code: de e8 a2 aa b6 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 bf ec ff ff ff 41 29 c7 e9 99 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 22 22 f4 ff 49 8b 45 30 48 89 44 24 28 4c
RSP: 0018:ffffc90003267da0 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffff88810e6a62c0
RDX: ffff88810e6a62c0 RSI: 0000000000000000 RDI: 0000000000000040
RBP: ffffc90003267f18 R08: ffffffff81b40193 R09: ffffed102676e7c6
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000010 R14: 1ffff1102676e7c0 R15: dffffc0000000000
FS:  00007fbca4d326c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbca4cced00 CR3: 0000000127344000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 a2 aa b6 ff       	call   0xffb6aaa7
   5:	31 c0                	xor    %eax,%eax
   7:	81 fb 00 00 20 00    	cmp    $0x200000,%ebx
   d:	0f 94 c0             	sete   %al
  10:	41 bf ec ff ff ff    	mov    $0xffffffec,%r15d
  16:	41 29 c7             	sub    %eax,%r15d
  19:	e9 99 00 00 00       	jmp    0xb7
  1e:	49 8d 7d 30          	lea    0x30(%r13),%rdi
  22:	48 89 f8             	mov    %rdi,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2e:	74 05                	je     0x35
  30:	e8 22 22 f4 ff       	call   0xfff42257
  35:	49 8b 45 30          	mov    0x30(%r13),%rax
  39:	48 89 44 24 28       	mov    %rax,0x28(%rsp)
  3e:	4c                   	rex.WR