wait_for_free_request(struct TCP_Server_Info *server, const int timeout,
		      const int optype)
{
	return wait_for_free_credits(server, timeout,
				server->ops->get_credits_field(server, optype));
}

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.