Include changes:

- fix NULL dereference in batadv_orig_hardif_seq_print_text()
 - fix reference counting imbalance when using fragmentation
 - avoid access to orig_node objects after they have been free'd
 - fix local TT check for outgoing arp requests in DAT
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABCAAGBQJTdQmwAAoJEEKTMo6mOh1VGLAP/A1nHDzPMUOcDttR49Cs38w0
 oD2Ox66xSJh2Yn8qRg9k7CshG65pU70J77bQjkPvMtTlwsgwgLFcHP1b/RJQl7Cz
 aFSJY5tKvLL41TwqxLSAmvUyPMfvagXvxH65bLBIQ9+dLNkDiHNH/IjdnYKWHYi9
 0tqUi7/pLaCfWXMkDVeWn0P2M8baDyU1HUTuRX3ctE4l9PKF9ZVgxsxaPrhTYlXY
 J61KT+VXs19rdAnYQlFiaDk64Q6meMjuNjxuLkViTmqKi6pSDGi9skeKWZXaKOjT
 UmLLygVyf9Sh36TWDKinSV09r/s+TeU35o6bCgrmshZebSmFEUkEDA7oxNJ5JW+Q
 Lh2Y2SrX/+F0+9yhxhDd0fHP3PAwt2XNKjIQjurE85Gw84ZoMyBsVIpF8LD3IS+I
 T5CSAB0fEyeS0ZFyChbgWSLZzFjcowRHwK1iO8SJC5LHRtYerEqnvgP/V3ej0dt9
 A4nq8eO8N9AorQc1G9qMosLNLheMCmFenU2nb8MbC5yDvq2X9jxsmgYm0fvr/y47
 f667bowPr0afhsLvTqy6ezYma9EV40F8jW2/OovyBRUuytavJ4xcbCz/FUlWfNRU
 xx68e15t49iOFJynGXt62LJnEmBzRaE2uUagZaMNms18gmsL10y5pECAmi9zhQWK
 smkfqmsVWU8nB9UsDIT7
 =+DKS
 -----END PGP SIGNATURE-----

Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge

Include changes:
- fix NULL dereference in batadv_orig_hardif_seq_print_text()
- fix reference counting imbalance when using fragmentation
- avoid access to orig_node objects after they have been free'd
- fix local TT check for outgoing arp requests in DAT

net/batman-adv/distributed-arp-table.c

@@ -940,8 +940,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
 		 * additional DAT answer may trigger kernel warnings about
 		 * a packet coming from the wrong port.
 		 */
-		if (batadv_is_my_client(bat_priv, dat_entry->mac_addr,
-					BATADV_NO_FLAGS)) {
+		if (batadv_is_my_client(bat_priv, dat_entry->mac_addr, vid)) {
 			ret = true;
 			goto out;
 		}

net/batman-adv/fragmentation.c

@@ -418,12 +418,13 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
 			     struct batadv_neigh_node *neigh_node)
 {
 	struct batadv_priv *bat_priv;
-	struct batadv_hard_iface *primary_if;
+	struct batadv_hard_iface *primary_if = NULL;
 	struct batadv_frag_packet frag_header;
 	struct sk_buff *skb_fragment;
 	unsigned mtu = neigh_node->if_incoming->net_dev->mtu;
 	unsigned header_size = sizeof(frag_header);
 	unsigned max_fragment_size, max_packet_size;
+	bool ret = false;
 
 	/* To avoid merge and refragmentation at next-hops we never send
 	 * fragments larger than BATADV_FRAG_MAX_FRAG_SIZE
@@ -483,7 +484,11 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
 			   skb->len + ETH_HLEN);
 	batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
 
-	return true;
+	ret = true;
+
 out_err:
-	return false;
+	if (primary_if)
+		batadv_hardif_free_ref(primary_if);
+
+	return ret;
 }

net/batman-adv/gateway_client.c

@@ -42,8 +42,10 @@
 
 static void batadv_gw_node_free_ref(struct batadv_gw_node *gw_node)
 {
-	if (atomic_dec_and_test(&gw_node->refcount))
+	if (atomic_dec_and_test(&gw_node->refcount)) {
+		batadv_orig_node_free_ref(gw_node->orig_node);
 		kfree_rcu(gw_node, rcu);
+	}
 }
 
 static struct batadv_gw_node *
@@ -406,10 +408,15 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
 	if (gateway->bandwidth_down == 0)
 		return;
 
-	gw_node = kzalloc(sizeof(*gw_node), GFP_ATOMIC);
-	if (!gw_node)
+	if (!atomic_inc_not_zero(&orig_node->refcount))
 		return;
 
+	gw_node = kzalloc(sizeof(*gw_node), GFP_ATOMIC);
+	if (!gw_node) {
+		batadv_orig_node_free_ref(orig_node);
+		return;
+	}
+
 	INIT_HLIST_NODE(&gw_node->list);
 	gw_node->orig_node = orig_node;
 	atomic_set(&gw_node->refcount, 1);

net/batman-adv/originator.c

@@ -1079,7 +1079,8 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset)
 	bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface);
 
 out:
-	batadv_hardif_free_ref(hard_iface);
+	if (hard_iface)
+		batadv_hardif_free_ref(hard_iface);
 	return 0;
 }