From 00ea1ceebe0d9f2dc1cc2b7bd575a00100c27869 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Sat, 18 Feb 2017 19:00:45 -0500 Subject: ipv6: release dst on error in ip6_dst_lookup_tail If ip6_dst_lookup_tail has acquired a dst and fails the IPv4-mapped check, release the dst before returning an error. Fixes: ec5e3b0a1d41 ("ipv6: Inhibit IPv4-mapped src address on the wire.") Signed-off-by: Willem de Bruijn Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/ip6_output.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'net/ipv6/ip6_output.c') diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index e164684456df..7cebee58e55b 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1022,8 +1022,10 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk, } #endif if (ipv6_addr_v4mapped(&fl6->saddr) && - !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) - return -EAFNOSUPPORT; + !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) { + err = -EAFNOSUPPORT; + goto out_err_release; + } return 0; -- cgit