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pppoe: Fix socket leak. 

Move SKB trim before we lookup the socket so we don't have to
put it on failure.

Based upon an initial patch by Jarek Poplawski and suggestions
from Herbert Xu.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-10-30 23:11:44 -07:00
parent 721d5dfe7e
commit 263e69cbc9
1 changed files with 3 additions and 3 deletions
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6
drivers/net/pppoe.c
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@ -399,11 +399,11 @@ static int pppoe_rcv(struct sk_buff *skb,
if (skb->len < len)
goto drop;
po = get_item(ph->sid, eth_hdr(skb)->h_source, dev->ifindex);
if (!po)
if (pskb_trim_rcsum(skb, len))
goto drop;
if (pskb_trim_rcsum(skb, len))
po = get_item(ph->sid, eth_hdr(skb)->h_source, dev->ifindex);
if (!po)
goto drop;
return sk_receive_skb(sk_pppox(po), skb, 0);