From mboxrd@z Thu Jan 1 00:00:00 1970 From: Willem de Bruijn Subject: [PATCH net] ipv6: release dst on error in ip6_dst_lookup_tail Date: Sat, 18 Feb 2017 18:51:43 -0500 Message-ID: <20170218235144.29670-1-willemdebruijn.kernel@gmail.com> Cc: davem@davemloft.net, eric.dumazet@gmail.com, jtleight@udel.edu, Willem de Bruijn To: netdev@vger.kernel.org Return-path: Received: from mail-qt0-f195.google.com ([209.85.216.195]:36613 "EHLO mail-qt0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750806AbdBRXw6 (ORCPT ); Sat, 18 Feb 2017 18:52:58 -0500 Received: by mail-qt0-f195.google.com with SMTP id h53so10200590qth.3 for ; Sat, 18 Feb 2017 15:52:10 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: From: Willem de Bruijn If ip6_dst_lookup_tail has acquired a dst and fails the IPv4-mapped check, release the dst before returning an error. Fixes: b2e6f0c8dde5 ("ipv6: Inhibit IPv4-mapped src address on the wire.") Signed-off-by: Willem de Bruijn --- net/ipv6/ip6_output.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) 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; -- 2.11.0.483.g087da7b7c-goog