iperf_reset_test(struct iperf_test *test)
{
    struct iperf_stream *sp;

    /* Free streams */
    while (!SLIST_EMPTY(&test->streams)) {
        sp = SLIST_FIRST(&test->streams);
        SLIST_REMOVE_HEAD(&test->streams, streams);
        iperf_free_stream(sp);
    }
    if (test->omit_timer != NULL) {
	tmr_cancel(test->omit_timer);
	test->omit_timer = NULL;
    }
    if (test->timer != NULL) {
	tmr_cancel(test->timer);
	test->timer = NULL;
    }
    if (test->stats_timer != NULL) {
	tmr_cancel(test->stats_timer);
	test->stats_timer = NULL;
    }
    if (test->reporter_timer != NULL) {
	tmr_cancel(test->reporter_timer);
	test->reporter_timer = NULL;
    }
    test->done = 0;

    SLIST_INIT(&test->streams);

    test->role = 's';
    test->sender = 0;
    test->sender_has_retransmits = 0;
    set_protocol(test, Ptcp);
    test->omit = OMIT;
    test->duration = DURATION;
    test->server_affinity = -1;
    test->state = 0;
    
    test->ctrl_sck = -1;
    test->prot_listener = -1;

    test->bytes_sent = 0;
    test->blocks_sent = 0;

    test->reverse = 0;
    test->no_delay = 0;

    FD_ZERO(&test->read_set);
    FD_ZERO(&test->write_set);
    
    test->num_streams = 1;
    test->settings->socket_bufsize = 0;
    test->settings->blksize = DEFAULT_TCP_BLKSIZE;
    test->settings->rate = 0;
    test->settings->burst = 0;
    test->settings->mss = 0;
    memset(test->cookie, 0, COOKIE_SIZE);
    test->multisend = 10;	/* arbitrary */

    /* Free output line buffers, if any (on the server only) */
    struct iperf_textline *t;
    while (!TAILQ_EMPTY(&test->server_output_list)) {
	t = TAILQ_FIRST(&test->server_output_list);
	TAILQ_REMOVE(&test->server_output_list, t, textlineentries);
	free(t->line);
	free(t);
    }
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.