1 files changed, 24 insertions, 2 deletions

diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index c47ffd7a0a70..19b9cce6c210 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -845,10 +845,27 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
 	struct ip_vs_conn *cp;
 	struct netns_ipvs *ipvs = net_ipvs(net);
 
-	if (!(flags & IP_VS_CONN_F_TEMPLATE))
+	if (!(flags & IP_VS_CONN_F_TEMPLATE)) {
 		cp = ip_vs_conn_in_get(param);
-	else
+		if (cp && ((cp->dport != dport) ||
+			   !ip_vs_addr_equal(cp->daf, &cp->daddr, daddr))) {
+			if (!(flags & IP_VS_CONN_F_INACTIVE)) {
+				ip_vs_conn_expire_now(cp);
+				__ip_vs_conn_put(cp);
+				cp = NULL;
+			} else {
+				/* This is the expiration message for the
+				 * connection that was already replaced, so we
+				 * just ignore it.
+				 */
+				__ip_vs_conn_put(cp);
+				kfree(param->pe_data);
+				return;
+			}
+		}
+	} else {
 		cp = ip_vs_ct_in_get(param);
+	}
 
 	if (cp) {
 		/* Free pe_data */
@@ -896,6 +913,8 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
 			IP_VS_DBG(2, "BACKUP, add new conn. failed\n");
 			return;
 		}
+		if (!(flags & IP_VS_CONN_F_TEMPLATE))
+			kfree(param->pe_data);
 	}
 
 	if (opt)
@@ -1169,6 +1188,7 @@ static inline int ip_vs_proc_sync_conn(struct net *net, __u8 *p, __u8 *msg_end)
 				(opt_flags & IPVS_OPT_F_SEQ_DATA ? &opt : NULL)
 				);
 #endif
+	ip_vs_pe_put(param.pe);
 	return 0;
 	/* Error exit */
 out:
@@ -1385,9 +1405,11 @@ join_mcast_group(struct sock *sk, struct in_addr *addr, char *ifname)
 
 	mreq.imr_ifindex = dev->ifindex;
 
+	rtnl_lock();
 	lock_sock(sk);
 	ret = ip_mc_join_group(sk, &mreq);
 	release_sock(sk);
+	rtnl_unlock();
 
 	return ret;
 }