Commit 4258faa1 authored by Yuanjun Gong's avatar Yuanjun Gong Committed by David S. Miller
Browse files

net:ipv6: check return value of pskb_trim() 



goto tx_err if an unexpected result is returned by pskb_tirm()
in ip6erspan_tunnel_xmit().

Fixes: 5a963eb6 ("ip6_gre: Add ERSPAN native tunnel support")
Signed-off-by: default avatarYuanjun Gong <ruc_gongyuanjun@163.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent daa75144

net/ipv6/ip6_gre.c

+2 −1
Original line number Diff line number Diff line
@@ -955,7 +955,8 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, 
		goto tx_err;



	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 tx_err;

		truncate = true;

	}