> > I'm experiencing a major memory leak if I run a router with IP connection > > tracking enabled and packets larger than MTU size. > > How do you observe such a memory leak? What exact values are you > looking at? On the router I issue a 'watch -n 1 cat /proc/meminfo'. Then I do a 'ping -f -s 64000' from one host to another host via the router. On each update of my watch above there are about 10 MB of memory (MemFree) missing. I also watched /proc/slabinfo and noticed the increasing size of the skbuff_head_cache slab. > > My only glue so far is that the skbuff_head_cache is growing. Connection > > tracking has a hook in the IP stack, where it gets hold of packets. If > > these packets are fragmented (due to the packet size being larger than > > MTU size) they are reassembled by ip_conntrack. So I guess the memory > > leak might be somewhere in there. > > Did you enable support for bridging? > > There was a bug in the bridging (bridging firewall) code which made it > 'forget' to drop the reference count (and thus introduced a memory > leak). CONFIG_BRIDGE is not set, i.e. bridging is not enabled. -- Regards, Thomas. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
