From: William Tu Date: Thu, 21 Dec 2017 23:51:22 +0000 (-0800) Subject: net: erspan: remove md NULL check X-Git-Tag: v4.16-rc1~123^2~289 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=214bb1c78a4dd94ba748f1707ecc70041abe1fd3;p=linux.git net: erspan: remove md NULL check The 'md' is allocated from 'tun_dst = ip_tun_rx_dst' and since we've checked 'tun_dst', 'md' will never be NULL. The patch removes it at both ipv4 and ipv6 erspan. Fixes: afb4c97d90e6 ("ip6_gre: fix potential memory leak in ip6erspan_rcv") Fixes: 50670b6ee9bc ("ip_gre: fix potential memory leak in erspan_rcv") Cc: Haishuang Yan Signed-off-by: William Tu Signed-off-by: David S. Miller --- diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 78365094f56c..b61f2285816d 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -313,11 +313,6 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi, return PACKET_REJECT; md = ip_tunnel_info_opts(&tun_dst->u.tun_info); - if (!md) { - dst_release((struct dst_entry *)tun_dst); - return PACKET_REJECT; - } - memcpy(md, pkt_md, sizeof(*md)); md->version = ver; diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 97f148f15429..b345b7e484c5 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -550,10 +550,6 @@ static int ip6erspan_rcv(struct sk_buff *skb, int gre_hdr_len, info = &tun_dst->u.tun_info; md = ip_tunnel_info_opts(info); - if (!md) { - dst_release((struct dst_entry *)tun_dst); - return PACKET_REJECT; - } memcpy(md, pkt_md, sizeof(*md)); md->version = ver;