Hi,
I discovered a potential memory leak in the routine udp_send() in lwip.c,
line 410 and on:
/* not enough space to add an UDP header to first pbuf in given p chain?
*/
if (pbuf_header(p, UDP_HLEN)) {
/* allocate header in a seperate new pbuf */
q = pbuf_alloc(PBUF_IP, UDP_HLEN, PBUF_RAM);
...
/* find the outgoing network interface for this packet */
netif = ip_route(&(pcb->remote_ip));
/* no outgoing network interface could be found? */
if (netif == NULL) {
LWIP_DEBUGF(UDP_DEBUG | 1, ("udp_send: No route to 0x%lx\n",
pcb->remote_ip.addr));
UDP_STATS_INC(udp.rterr);
return ERR_RTE;
}
In above code, if ip_route() didn't find a route, it returns with an error
code but doesn't free the allocated memory for the UDP header (assigned to q
above).
Is this a memory leak or do I miss something?
Olaf.
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