------------[ cut here ]------------
WARNING: CPU: 1 PID: 5861 at fs/inode.c:388 inc_nlink+0x144/0x160 fs/inode.c:388
Modules linked in:
CPU: 1 PID: 5861 Comm: syz-executor.3 Not tainted 5.18.0-rc6-next-20220516-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inc_nlink+0x144/0x160 fs/inode.c:388
Code: ff 4c 89 e7 e8 5d c9 ea ff e9 42 ff ff ff 4c 89 e7 e8 e0 c8 ea ff e9 fc fe ff ff 4c 89 e7 e8 d3 c8 ea ff eb d4 e8 6c 26 9e ff <0f> 0b e9 6e ff ff ff e8 d0 c8 ea ff e9 44 ff ff ff e8 c6 c8 ea ff
RSP: 0018:ffffc90004bdfcc0 EFLAGS: 00010216
RAX: 0000000000020e51 RBX: ffff88802aa60000 RCX: ffffc90005a0b000
RDX: 0000000000040000 RSI: ffffffff81dc8574 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888074b8008b
R10: ffffffff81dc84e0 R11: 0000000000000002 R12: ffff88802aa60048
R13: ffff888029702468 R14: ffff888074b80000 R15: ffff8880238b0400
FS:  00007f4ecb2d9700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a6a39d090 CR3: 000000007cd97000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x478/0x770 fs/9p/vfs_inode_dotl.c:454
 vfs_mkdir+0x1c3/0x3b0 fs/namei.c:3975
 do_mkdirat+0x285/0x300 fs/namei.c:4001
 __do_sys_mkdir fs/namei.c:4021 [inline]
 __se_sys_mkdir fs/namei.c:4019 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:4019
 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+0x46/0xb0
RIP: 0033:0x7f4eca0890e9
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:00007f4ecb2d9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f4eca19bf60 RCX: 00007f4eca0890e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200002c0
RBP: 00007f4eca0e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce9dbc04f R14: 00007f4ecb2d9300 R15: 0000000000022000
 </TASK>