------------[ cut here ]------------
WARNING: CPU: 1 PID: 15762 at fs/inode.c:388 inc_nlink+0x144/0x160 fs/inode.c:388
Modules linked in:
CPU: 1 PID: 15762 Comm: syz-executor.0 Not tainted 6.0.0-rc6-syzkaller-00030-g06f7db949993 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
RIP: 0010:inc_nlink+0x144/0x160 fs/inode.c:388
Code: ff 4c 89 e7 e8 1d ed ea ff e9 42 ff ff ff 4c 89 e7 e8 a0 ec ea ff e9 fc fe ff ff 4c 89 e7 e8 93 ec ea ff eb d4 e8 4c 4e 9f ff <0f> 0b e9 6e ff ff ff e8 90 ec ea ff e9 44 ff ff ff e8 86 ec ea ff
RSP: 0018:ffffc90009e97ca0 EFLAGS: 00010216

RAX: 000000000000c536 RBX: ffff8880346b0858 RCX: ffffc900048c1000
RDX: 0000000000040000 RSI: ffffffff81dbe9a4 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000028 R12: ffff8880346b08a0
R13: ffff88802c2aee38 R14: 1ffff920013d2f9c R15: ffff888051373400
FS:  00007fd4dbe4b700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f448eb6d1b8 CR3: 0000000021cb4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x5c5/0x900 fs/9p/vfs_inode_dotl.c:444
 vfs_mkdir+0x489/0x740 fs/namei.c:4013
 do_mkdirat+0x28c/0x310 fs/namei.c:4038
 __do_sys_mkdir fs/namei.c:4058 [inline]
 __se_sys_mkdir fs/namei.c:4056 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:4056
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd4dac8a649
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:00007fd4dbe4b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fd4dad9bf80 RCX: 00007fd4dac8a649
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200002c0
RBP: 00007fd4dace5560 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0e959b1f R14: 00007fd4dbe4b300 R15: 0000000000022000
 </TASK>