Commit 349b71d6 authored by Zhouyang Jia's avatar Zhouyang Jia Committed by David S. Miller
Browse files

net: dsa: add error handling for pskb_trim_rcsum 



When pskb_trim_rcsum fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling pskb_trim_rcsum.

Signed-off-by: default avatarZhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 09757646

net/dsa/tag_trailer.c

+2 −1
Original line number Diff line number Diff line
@@ -75,7 +75,8 @@ static struct sk_buff *trailer_rcv(struct sk_buff *skb, struct net_device *dev, 
	if (!skb->dev)

		return NULL;



	pskb_trim_rcsum(skb, skb->len - 4);

	if (pskb_trim_rcsum(skb, skb->len - 4))

		return NULL;



	return skb;

}