commit aec27311c23a8ce8eaf490762249d3ed74be83b6
author David S. Miller <davem@davemloft.net> Wed Jul 06 07:30:59 2011 -0700
committer David S. Miller <davem@davemloft.net> Wed Jul 06 07:30:59 2011 -0700
tree 51a789724f43439d5aff9ddc4d87cd4d00397489
parent dc7f9f6e8838556f226c2ebd1da7bb305cb25654

packet: Fix leak in pre-defrag support.

When we clone the SKB, we forget about the original
one.  Avoid this problem by using skb_share_check().

Reported-by: Penttilä Mika <mika.penttila@ixonos.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/packet/af_packet.c

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 41f0489..aec50a1 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -476,7 +476,7 @@
 		return skb;
 
 	if (ip_is_fragment(ip_hdr(skb))) {
-		skb = skb_clone(skb, GFP_ATOMIC);
+		skb = skb_share_check(skb, GFP_ATOMIC);
 		if (skb) {
 			if (pskb_trim_rcsum(skb, len))
 				return skb;