[linux-dvb] Memory leak in dvb_net

[Holger Kiehl <Holger.Kiehl@dwd.de>]

Hello

Using dvbnet to receive multiple multicast data streams, I and several
others have observed that memory is slowly going away up to a point
where the system just hangs up. This happens with all kernels from
2.4.x to the latest 2.6 kernel.

Rafal Malek from Tellique has looked into this and has found that in
linux each network device supports sending and receiving of data packets
by default. But in the case of one-way satellite communication the
device is not able to send data. This can be seen when monitoring
/proc/slabinfo ip_dst_cache and some other values always go up.

Applying the following patch solves this problem:

--- drivers/media/dvb/dvb-core/dvb_net.c.orig	2004-12-01 16:11:03.000000000 +0100
+++ drivers/media/dvb/dvb-core/dvb_net.c	2004-12-01 16:12:53.000000000 +0100
@@ -661,6 +661,7 @@
 
 static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev)
 {
+	dev_kfree_skb(skb);
 	return 0;
 }
 
Please consider applying this patch.

Regards,
Holger