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ipv4: ip_gre: fix return value check in erspan_xmit()

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goto free_skb if an unexpected result is returned by pskb_tirm()
in erspan_xmit().

Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuanjun Gong 2023-07-17 22:49:18 +08:00 committed by David S. Miller
parent 02d84f3eb5
commit aa7cb3789b
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/ip_gre.c
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@ -690,7 +690,8 @@ static netdev_tx_t erspan_xmit(struct sk_buff *skb,
goto free_skb;
if (skb->len > dev->mtu + dev->hard_header_len) {
pskb_trim(skb, dev->mtu + dev->hard_header_len);
if (pskb_trim(skb, dev->mtu + dev->hard_header_len))
goto free_skb;
truncate = true;
}