------------[ cut here ]------------
WARNING: CPU: 0 PID: 12610 at fs/inode.c:388 inc_nlink+0x144/0x160 fs/inode.c:388
Modules linked in:
CPU: 0 PID: 12610 Comm: syz-executor.5 Not tainted 5.18.0-rc6-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 0d 26 eb ff e9 42 ff ff ff 4c 89 e7 e8 90 25 eb ff e9 fc fe ff ff 4c 89 e7 e8 83 25 eb ff eb d4 e8 dc 2e a0 ff <0f> 0b e9 6e ff ff ff e8 80 25 eb ff e9 44 ff ff ff e8 76 25 eb ff
RSP: 0018:ffffc90014fa7cc0 EFLAGS: 00010212
RAX: 000000000002f753 RBX: ffff8880181ae698 RCX: ffffc9000aeb2000
RDX: 0000000000040000 RSI: ffffffff81d84674 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880181ae14b
R10: ffffffff81d845e0 R11: 0000000000000022 R12: ffff8880181ae6e0
R13: ffff88806dfe6468 R14: ffff8880181ae0c0 R15: ffff8880789d0400
FS:  00007f02d1ac5700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8acd6add90 CR3: 000000007b2f7000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 v9fs_vfs_mkdir_dotl+0x478/0x770 fs/9p/vfs_inode_dotl.c:454
 vfs_mkdir+0x1c3/0x3b0 fs/namei.c:3931
 do_mkdirat+0x285/0x300 fs/namei.c:3957
 __do_sys_mkdir fs/namei.c:3977 [inline]
 __se_sys_mkdir fs/namei.c:3975 [inline]
 __x64_sys_mkdir+0xf2/0x140 fs/namei.c:3975
 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+0x44/0xae
RIP: 0033:0x7f02d08890e9
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:00007f02d1ac5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f02d099bf60 RCX: 00007f02d08890e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200002c0
RBP: 00007f02d08e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce898fb2f R14: 00007f02d1ac5300 R15: 0000000000022000
 </TASK>