Prevent segfault with failed TLS handshake?

Need proper review for this patch! Sara?
getdnsapi · Nov 15, 2015 · 08bf613 · 08bf613
1 parent 95618bb
commit 08bf613
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/src/stub.c b/src/stub.c
@@ -1501,9 +1501,15 @@ upstream_write_cb(void *userarg)
 {
 	getdns_upstream *upstream = (getdns_upstream *)userarg;
 	getdns_network_req *netreq = upstream->write_queue;
-	getdns_dns_req *dnsreq = netreq->owner;
+	getdns_dns_req *dnsreq;
 	int q;
 
+	if (!netreq) {
+		GETDNS_CLEAR_EVENT(upstream->loop, &upstream->event);
+		upstream->event.write_cb = NULL;
+		return;
+	}
+	dnsreq = netreq->owner;
 	/* TODO: think about TCP AGAIN */
 	netreq->debug_start_time = _getdns_get_time_as_uintt64();