------------[ cut here ]------------
WARNING: CPU: 1 PID: 9532 at fs/inode.c:388 inc_nlink+0x144/0x160 fs/inode.c:388
Modules linked in:
CPU: 1 PID: 9532 Comm: syz-executor.5 Not tainted 6.0.0-rc5-syzkaller-00017-gd1221cea11fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:inc_nlink+0x144/0x160 fs/inode.c:388
Code: ff 4c 89 e7 e8 ed ee ea ff e9 42 ff ff ff 4c 89 e7 e8 70 ee ea ff e9 fc fe ff ff 4c 89 e7 e8 63 ee ea ff eb d4 e8 8c 8e 9e ff <0f> 0b e9 6e ff ff ff e8 60 ee ea ff e9 44 ff ff ff e8 56 ee ea ff
RSP: 0018:ffffc900046cfca0 EFLAGS: 00010212
RAX: 000000000000269e RBX: ffff888038e9aec0 RCX: ffffc900038b1000
RDX: 0000000000040000 RSI: ffffffff81dd7a94 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888038e9af08
R13: ffff888031969318 R14: 1ffff920008d9f9c R15: ffff888077c26c00
FS:  00007f17e9d52700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ede9ba6ed8 CR3: 000000007cabd000 CR4: 0000000000350ef0
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: 0033:0x7f17e8c89409
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:00007f17e9d52168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f17e8d9bf80 RCX: 00007f17e8c89409
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007f17e8ce4367 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffedf6291af R14: 00007f17e9d52300 R15: 0000000000022000
 </TASK>