general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 9272 Comm: syz.0.2339 Tainted: G        W         5.10.240-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
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:d_is_positive include/linux/dcache.h:461 [inline]
RIP: 0010:filename_create+0x201/0x680 fs/namei.c:3613
Code: 48 3d 01 f0 ff ff 72 11 e8 6c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70
RSP: 0018:ffffc90001237da0 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000600 RCX: dffffc0000000000
RDX: ffffc900050ea000 RSI: 0000000000002170 RDI: 0000000000002171
RBP: ffffc90001237ea0 R08: dffffc0000000000 R09: ffffed102389c5a4
R10: ffffed102389c5a4 R11: 1ffff1102389c5a3 R12: ffffc90001237ec0
R13: ffffc90001237ec0 R14: 0000000000000016 R15: ffffc90001237ec8
FS:  00007f8662cea6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 0000000118214000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 user_path_create fs/namei.c:3665 [inline]
 do_mkdirat+0x5e/0x340 fs/namei.c:3805
 __do_sys_mkdirat fs/namei.c:3823 [inline]
 __se_sys_mkdirat fs/namei.c:3821 [inline]
 __x64_sys_mkdirat+0x7b/0x90 fs/namei.c:3821
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8664281be9
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:00007f8662cea038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f86644a8fa0 RCX: 00007f8664281be9
RDX: 000000000000001a RSI: 00002000000002c0 RDI: ffffffffffffff9c
RBP: 00007f8664304e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f86644a9038 R14: 00007f86644a8fa0 R15: 00007fffedd4f018
Modules linked in:
---[ end trace e5c55275773b87b6 ]---
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:d_is_positive include/linux/dcache.h:461 [inline]
RIP: 0010:filename_create+0x201/0x680 fs/namei.c:3613
Code: 48 3d 01 f0 ff ff 72 11 e8 6c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70
RSP: 0018:ffffc90001237da0 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000600 RCX: dffffc0000000000
RDX: ffffc900050ea000 RSI: 0000000000002170 RDI: 0000000000002171
RBP: ffffc90001237ea0 R08: dffffc0000000000 R09: ffffed102389c5a4
R10: ffffed102389c5a4 R11: 1ffff1102389c5a3 R12: ffffc90001237ec0
R13: ffffc90001237ec0 R14: 0000000000000016 R15: ffffc90001237ec8
FS:  00007f8662cea6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb4817fcc CR3: 0000000118214000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 11                	jb     0x19
   8:	e8 6c 57 bb ff       	call   0xffbb5779
   d:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  14:	fc ff df
  17:	eb 5c                	jmp    0x75
  19:	4c 89 f0             	mov    %r14,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 e7 03 00 00    	jne    0x41d
  36:	41 8b 1e             	mov    (%r14),%ebx
  39:	89 de                	mov    %ebx,%esi
  3b:	81                   	.byte 0x81
  3c:	e6 00                	out    %al,$0x0
  3e:	00                   	.byte 0x0
  3f:	70                   	.byte 0x70