5 files changed, 13 insertions, 10 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 137d1892395d..a4b5bd4d2c89 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -62,6 +62,11 @@
 #include <net/net_namespace.h>
 #include <net/addrconf.h>
 
+#define IPV6ONLY_FLAGS	\
+		(IFA_F_NODAD | IFA_F_OPTIMISTIC | IFA_F_DADFAILED | \
+		 IFA_F_HOMEADDRESS | IFA_F_TENTATIVE | \
+		 IFA_F_MANAGETEMPADDR | IFA_F_STABLE_PRIVACY)
+
 static struct ipv4_devconf ipv4_devconf = {
 	.data = {
 		[IPV4_DEVCONF_ACCEPT_REDIRECTS - 1] = 1,
@@ -482,6 +487,9 @@ static int __inet_insert_ifa(struct in_ifaddr *ifa, struct nlmsghdr *nlh,
 	ifa->ifa_flags &= ~IFA_F_SECONDARY;
 	last_primary = &in_dev->ifa_list;
 
+	/* Don't set IPv6 only flags to IPv4 addresses */
+	ifa->ifa_flags &= ~IPV6ONLY_FLAGS;
+
 	ifap = &in_dev->ifa_list;
 	ifa1 = rtnl_dereference(*ifap);
 
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 9a206931a342..180f6896b98b 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1229,12 +1229,8 @@ static void igmpv3_del_delrec(struct in_device *in_dev, struct ip_mc_list *im)
 	if (pmc) {
 		im->interface = pmc->interface;
 		if (im->sfmode == MCAST_INCLUDE) {
-			im->tomb = pmc->tomb;
-			pmc->tomb = NULL;
-
-			im->sources = pmc->sources;
-			pmc->sources = NULL;
-
+			swap(im->tomb, pmc->tomb);
+			swap(im->sources, pmc->sources);
 			for (psf = im->sources; psf; psf = psf->sf_next)
 				psf->sf_crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;
 		} else {
diff --git a/net/ipv4/raw_diag.c b/net/ipv4/raw_diag.c
index 899e34ceb560..e35736b99300 100644
--- a/net/ipv4/raw_diag.c
+++ b/net/ipv4/raw_diag.c
@@ -24,9 +24,6 @@ raw_get_hashinfo(const struct inet_diag_req_v2 *r)
 		return &raw_v6_hashinfo;
 #endif
 	} else {
-		pr_warn_once("Unexpected inet family %d\n",
-			     r->sdiag_family);
-		WARN_ON_ONCE(1);
 		return ERR_PTR(-EINVAL);
 	}
 }
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index abaa7f9371e5..517300d587a7 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -448,7 +448,7 @@ static struct neighbour *ipv4_neigh_lookup(const struct dst_entry *dst,
 		n = ip_neigh_gw4(dev, pkey);
 	}
 
-	if (n && !refcount_inc_not_zero(&n->refcnt))
+	if (!IS_ERR(n) && !refcount_inc_not_zero(&n->refcnt))
 		n = NULL;
 
 	rcu_read_unlock_bh();
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 47c217905864..7846afacdf0b 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2614,6 +2614,8 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tcp_saved_syn_free(tp);
 	tp->compressed_ack = 0;
 	tp->bytes_sent = 0;
+	tp->bytes_acked = 0;
+	tp->bytes_received = 0;
 	tp->bytes_retrans = 0;
 	tp->duplicate_sack[0].start_seq = 0;
 	tp->duplicate_sack[0].end_seq = 0;