From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu, 8 Apr 2010 04:20:47 +0000 (-0700)
Subject: bridge: Fix IGMP3 report parsing
X-Git-Tag: v2.6.34-rc5~5^2~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fd218cf9557b9bf7061365a8fe7020a56d3f767c;p=platform%2Fkernel%2Flinux-stable.git

bridge: Fix IGMP3 report parsing

The IGMP3 report parsing is looking at the wrong address for
group records.  This patch fixes it.

Reported-by: Banyeer <banyeer@yahoo.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 6980625..f29ada8 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -723,7 +723,7 @@ static int br_multicast_igmp3_report(struct net_bridge *br,
 		if (!pskb_may_pull(skb, len))
 			return -EINVAL;
 
-		grec = (void *)(skb->data + len);
+		grec = (void *)(skb->data + len - sizeof(*grec));
 		group = grec->grec_mca;
 		type = grec->grec_type;