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: 15334 Comm: syz.5.3827 Not tainted 5.10.226-syzkaller-00031-gb14940b90491 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:do_unlinkat+0x3b2/0x8b0 fs/namei.c:4029
Code: de e8 e2 88 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 02 20 f4 ff 49 8b 45 30 48 89 44 24 28 4c
RSP: 0018:ffffc90000c67da0 EFLAGS: 00010203
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffff8881139a62c0 RSI: 0000000000000000 RDI: 000000000000003c
RBP: ffffc90000c67f18 R08: ffffffff81b42763 R09: ffffed102657fb60
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 000000000000000c R14: 1ffff1102657fb5a R15: dffffc0000000000
FS:  00007f9c463406c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c4633ff98 CR3: 00000001120f9000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_unlink fs/namei.c:4082 [inline]
 __se_sys_unlink fs/namei.c:4080 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4080
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9c47ce8819
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:00007f9c46340038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f9c47ea0080 RCX: 00007f9c47ce8819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f9c47d5b75e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9c47ea0080 R15: 00007ffc58aa19b8
Modules linked in:
---[ end trace 211e788e0300c28c ]---
RIP: 0010:do_unlinkat+0x3b2/0x8b0 fs/namei.c:4029
Code: de e8 e2 88 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 02 20 f4 ff 49 8b 45 30 48 89 44 24 28 4c
RSP: 0018:ffffc90000c67da0 EFLAGS: 00010203
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffff8881139a62c0 RSI: 0000000000000000 RDI: 000000000000003c
RBP: ffffc90000c67f18 R08: ffffffff81b42763 R09: ffffed102657fb60
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 000000000000000c R14: 1ffff1102657fb5a R15: dffffc0000000000
FS:  00007f9c463406c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c4633ff98 CR3: 00000001120f9000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	de e8                	fsubrp %st,%st(0)
   2:	e2 88                	loop   0xffffff8c
   4:	b6 ff                	mov    $0xff,%dh
   6:	31 c0                	xor    %eax,%eax
   8:	81 fb 00 00 20 00    	cmp    $0x200000,%ebx
   e:	0f 94 c0             	sete   %al
  11:	41 bf ec ff ff ff    	mov    $0xffffffec,%r15d
  17:	41 29 c7             	sub    %eax,%r15d
  1a:	e9 99 00 00 00       	jmp    0xb8
  1f:	49 8d 7d 30          	lea    0x30(%r13),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 02 20 f4 ff       	call   0xfff42038
  36:	49 8b 45 30          	mov    0x30(%r13),%rax
  3a:	48 89 44 24 28       	mov    %rax,0x28(%rsp)
  3f:	4c                   	rex.WR