ipv6/dccp: do not inherit ipv6_mc_list from parent

commit 83eaddab4378db256d00d295bda6ca997cd13a52 upstream.

Like commit 657831ffc38e ("dccp/tcp: do not inherit mc_list from parent")
we should clear ipv6_mc_list etc. for IPv6 sockets too.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Connor O'Brien <connoro@google.com>
[AmitP: cherry-picked this backported commit from android-3.18]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index ff186dac3e073d3dd5d9ece1dcb1861164f20fef..4d925dbe4bb7a368bdddfe6ab10bec3e39810ce3 100644 (file)
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -487,6 +487,9 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
                newsk->sk_backlog_rcv = dccp_v4_do_rcv;
                newnp->pktoptions  = NULL;
                newnp->opt         = NULL;
+               newnp->ipv6_mc_list = NULL;
+               newnp->ipv6_ac_list = NULL;
+               newnp->ipv6_fl_list = NULL;
                newnp->mcast_oif   = inet6_iif(skb);
                newnp->mcast_hops  = ipv6_hdr(skb)->hop_limit;
 
@@ -562,6 +565,10 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
        /* Clone RX bits */
        newnp->rxopt.all = np->rxopt.all;
 
+       newnp->ipv6_mc_list = NULL;
+       newnp->ipv6_ac_list = NULL;
+       newnp->ipv6_fl_list = NULL;
+
        /* Clone pktoptions received with SYN */
        newnp->pktoptions = NULL;
        if (ireq->pktopts != NULL) {

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 19fe7b789a72d00e59688dd944181725c33b08d9..b8e05f16659cbcb1b707c40e05f454c7e9863e82 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1113,6 +1113,7 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                newtp->af_specific = &tcp_sock_ipv6_mapped_specific;
 #endif
 
+               newnp->ipv6_mc_list = NULL;
                newnp->ipv6_ac_list = NULL;
                newnp->ipv6_fl_list = NULL;
                newnp->pktoptions  = NULL;
@@ -1184,6 +1185,7 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
           First: no IPv4 options.
         */
        newinet->inet_opt = NULL;
+       newnp->ipv6_mc_list = NULL;
        newnp->ipv6_ac_list = NULL;
        newnp->ipv6_fl_list = NULL;