general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 23081 Comm: syz-executor.2 Not tainted 6.1.0-rc1-syzkaller-00093-g6d36c728bc2e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline]
RIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2787
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 0a 45 ea ff 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e4 44 ea ff 48 83 3b 00 0f 85 b7 01
RSP: 0018:ffffc9000c22fc30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000
RDX: ffff88807cfc0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888070675372 R08: ffffffff81f16ee9 R09: fffff52001845f74
R10: fffff52001845f75 R11: 1ffff92001845f74 R12: 0000000000000008
R13: 1ffff1100e0cea6e R14: ffff88808093b318 R15: 0000000000008000
FS:  00007f8d43cb8700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d42bad0b0 CR3: 000000001c8a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 d_splice_alias+0x122/0x3b0 fs/dcache.c:3182
 __lookup_hash+0x115/0x240 fs/namei.c:1601
 filename_create+0x25f/0x4f0 fs/namei.c:3807
 do_mkdirat+0xb5/0x550 fs/namei.c:4050
 __do_sys_mkdir fs/namei.c:4080 [inline]
 __se_sys_mkdir fs/namei.c:4078 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4078
 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: 0033:0x7f8d42a8b5a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8d43cb8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f8d42babf80 RCX: 00007f8d42a8b5a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f8d42ae6580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe85c097ff R14: 00007f8d43cb8300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline]
RIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2787
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 0a 45 ea ff 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e4 44 ea ff 48 83 3b 00 0f 85 b7 01
RSP: 0018:ffffc9000c22fc30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000
RDX: ffff88807cfc0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888070675372 R08: ffffffff81f16ee9 R09: fffff52001845f74
R10: fffff52001845f75 R11: 1ffff92001845f74 R12: 0000000000000008
R13: 1ffff1100e0cea6e R14: ffff88808093b318 R15: 0000000000008000
FS:  00007f8d43cb8700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d42bad0b0 CR3: 000000001c8a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
   4:	74 08                	je     0xe
   6:	48 89 df             	mov    %rbx,%rdi
   9:	e8 0a 45 ea ff       	callq  0xffea4518
   e:	48 8b 1b             	mov    (%rbx),%rbx
  11:	48 83 c3 08          	add    $0x8,%rbx
  15:	48 89 d8             	mov    %rbx,%rax
  18:	48 c1 e8 03          	shr    $0x3,%rax
  1c:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  23:	fc ff df
* 26:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2a:	74 08                	je     0x34
  2c:	48 89 df             	mov    %rbx,%rdi
  2f:	e8 e4 44 ea ff       	callq  0xffea4518
  34:	48 83 3b 00          	cmpq   $0x0,(%rbx)
  38:	0f                   	.byte 0xf
  39:	85                   	.byte 0x85
  3a:	b7 01                	mov    $0x1,%bh