general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 446 Comm: syz-executor.0 Not tainted 5.10.85-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:do_unlinkat+0x251/0x5d0 fs/namei.c:3966
Code: 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 4c 89 c0 45 0f b6 24 24 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 71 02 00 00 41 8b 00 89 c2
RSP: 0018:ffffc900008f7e08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc900008f7ee8 RCX: 0000000000000000
RDX: 0000000000000005 RSI: 0000000000000008 RDI: ffff88810b34ab0c
RBP: ffffc900008f7f10 R08: 0000000000000002 R09: ffff88811c77df3f
R10: ffffed10238efbe7 R11: ffff88810cbfc000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88810cbf4400 R15: 0000000000000000
FS:  00007f5075a17700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000a000 CR3: 0000000121268000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_unlink fs/namei.c:4018 [inline]
 __se_sys_unlink fs/namei.c:4016 [inline]
 __x64_sys_unlink+0xa5/0xe0 fs/namei.c:4016
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f5075ea4389
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:00007f5075a17168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f5075fc3f80 RCX: 00007f5075ea4389
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5075eef493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd704725df R14: 00007f5075a17300 R15: 0000000000022000
Modules linked in:
---[ end trace e3efe13a8e6525c2 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:do_unlinkat+0x251/0x5d0 fs/namei.c:3966
Code: 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 4c 89 c0 45 0f b6 24 24 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 71 02 00 00 41 8b 00 89 c2
RSP: 0018:ffffc900008f7e08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc900008f7ee8 RCX: 0000000000000000
RDX: 0000000000000005 RSI: 0000000000000008 RDI: ffff88810b34ab0c
RBP: ffffc900008f7f10 R08: 0000000000000002 R09: ffff88811c77df3f
R10: ffffed10238efbe7 R11: ffff88810cbfc000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88810cbf4400 R15: 0000000000000000
FS:  00007f5075a17700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000a000 CR3: 0000000121268000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 89 e0             	mov    %r12,%rax
   3:	4c 89 e2             	mov    %r12,%rdx
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	83 e2 07             	and    $0x7,%edx
   d:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  12:	38 d0                	cmp    %dl,%al
  14:	7f 08                	jg     0x1e
  16:	84 c0                	test   %al,%al
  18:	0f 85 a9 02 00 00    	jne    0x2c7
  1e:	4c 89 c0             	mov    %r8,%rax
  21:	45 0f b6 24 24       	movzbl (%r12),%r12d
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	74 08                	je     0x3b
  33:	3c 03                	cmp    $0x3,%al
  35:	0f 8e 71 02 00 00    	jle    0x2ac
  3b:	41 8b 00             	mov    (%r8),%eax
  3e:	89 c2                	mov    %eax,%edx