Messages in this thread Patch in this message | | | From | Zhouyang Jia <> | Subject | [PATCH] net: dsa: add error handling for pskb_trim_rcsum | Date | Mon, 11 Jun 2018 13:26:35 +0800 |
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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: Zhouyang Jia <jiazhouyang09@gmail.com> --- net/dsa/tag_trailer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c index 7d20e1f..56197f0 100644 --- a/net/dsa/tag_trailer.c +++ b/net/dsa/tag_trailer.c @@ -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; } -- 2.7.4
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