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>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 41f0489ff665..aec50a1e9849 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -476,7 +476,7 @@ static struct sk_buff *fanout_check_defrag(struct sk_buff *skb)
                 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;