int snd_seq_queue_timer_close(int queueid)
{
	struct snd_seq_queue *queue;
	int result = 0;

	queue = queueptr(queueid);
	if (queue == NULL)
		return -EINVAL;
	snd_seq_timer_close(queue);
	queuefree(queue);
	return result;
}

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.