general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 354 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller-00677-gf63b2625af7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:do_unlinkat+0x3db/0x910 fs/namei.c:4312
Code: de e8 e9 a8 ad ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 be ec ff ff ff 41 29 c6 e9 bd 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 e9 a7 f3 ff 49 8b 45 30 48 89 44 24 38 4c
RSP: 0018:ffffc90002e8fd80 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff88810f3e1440
RDX: ffff88810f3e1440 RSI: 0000000000000000 RDI: 0000000000000032
RBP: ffffc90002e8ff08 R08: ffffffff81c73c9c R09: fffff520005d1f8f
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000002 R14: dffffc0000000000 R15: 1ffff11023fc8f9e
FS:  00007f5c9f865700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000a000 CR3: 000000011f02e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __do_sys_unlink fs/namei.c:4368 [inline]
 __se_sys_unlink fs/namei.c:4366 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4366
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5c9ea8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5c9f865168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f5c9ebabf80 RCX: 00007f5c9ea8c389
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5c9ead7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0851a42f R14: 00007f5c9f865300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_unlinkat+0x3db/0x910 fs/namei.c:4312
Code: de e8 e9 a8 ad ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 be ec ff ff ff 41 29 c6 e9 bd 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 e9 a7 f3 ff 49 8b 45 30 48 89 44 24 38 4c
RSP: 0018:ffffc90002e8fd80 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff88810f3e1440
RDX: ffff88810f3e1440 RSI: 0000000000000000 RDI: 0000000000000032
RBP: ffffc90002e8ff08 R08: ffffffff81c73c9c R09: fffff520005d1f8f
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000002 R14: dffffc0000000000 R15: 1ffff11023fc8f9e
FS:  00007f5c9f865700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564b25298048 CR3: 000000011f02e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	de e8                	fsubrp %st,%st(0)
   2:	e9 a8 ad ff 31       	jmpq   0x31ffadaf
   7:	c0 81 fb 00 00 20 00 	rolb   $0x0,0x200000fb(%rcx)
   e:	0f 94 c0             	sete   %al
  11:	41 be ec ff ff ff    	mov    $0xffffffec,%r14d
  17:	41 29 c6             	sub    %eax,%r14d
  1a:	e9 bd 00 00 00       	jmpq   0xdc
  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 e9 a7 f3 ff       	callq  0xfff3a81f
  36:	49 8b 45 30          	mov    0x30(%r13),%rax
  3a:	48 89 44 24 38       	mov    %rax,0x38(%rsp)
  3f:	4c                   	rex.WR