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ip_gre: fix potential memory leak in erspan_rcv
If md is NULL, tun_dst must be freed, otherwise it will cause memory
leak.
Fixes: 1a66a836da
("gre: add collect_md mode to ERSPAN tunnel")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -313,8 +313,10 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi,
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return PACKET_REJECT;
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md = ip_tunnel_info_opts(&tun_dst->u.tun_info);
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if (!md)
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if (!md) {
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dst_release((struct dst_entry *)tun_dst);
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return PACKET_REJECT;
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}
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memcpy(md, pkt_md, sizeof(*md));
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md->version = ver;
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