static struct dentry *failed_creating(struct dentry *dentry)
{
	inode_unlock(d_inode(dentry->d_parent));
	dput(dentry);
	simple_release_fs(&debugfs_mount, &debugfs_mount_count);
	return NULL;
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.