1 files changed, 14 insertions, 5 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 7bb6a9a1256..2328acbd16c 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -358,11 +358,12 @@ struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey,
 {
 	struct neighbour *n;
 	int key_len = tbl->key_len;
-	u32 hash_val = tbl->hash(pkey, dev);
+	u32 hash_val;
 
 	NEIGH_CACHE_STAT_INC(tbl, lookups);
 
 	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, dev);
 	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
 		if (dev == n->dev && !memcmp(n->primary_key, pkey, key_len)) {
 			neigh_hold(n);
@@ -379,11 +380,12 @@ struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
 {
 	struct neighbour *n;
 	int key_len = tbl->key_len;
-	u32 hash_val = tbl->hash(pkey, NULL);
+	u32 hash_val;
 
 	NEIGH_CACHE_STAT_INC(tbl, lookups);
 
 	read_lock_bh(&tbl->lock);
+	hash_val = tbl->hash(pkey, NULL);
 	for (n = tbl->hash_buckets[hash_val & tbl->hash_mask]; n; n = n->next) {
 		if (!memcmp(n->primary_key, pkey, key_len) &&
 		    (net == n->dev->nd_net)) {
@@ -507,6 +509,7 @@ struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
 	if (tbl->pconstructor && tbl->pconstructor(n)) {
 		if (dev)
 			dev_put(dev);
+		release_net(net);
 		kfree(n);
 		n = NULL;
 		goto out;
@@ -834,12 +837,18 @@ static void neigh_timer_handler(unsigned long arg)
 	}
 	if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
 		struct sk_buff *skb = skb_peek(&neigh->arp_queue);
-
+		/* keep skb alive even if arp_queue overflows */
+		if (skb)
+			skb_get(skb);
+		write_unlock(&neigh->lock);
 		neigh->ops->solicit(neigh, skb);
 		atomic_inc(&neigh->probes);
-	}
+		if (skb)
+			kfree_skb(skb);
+	} else {
 out:
-	write_unlock(&neigh->lock);
+		write_unlock(&neigh->lock);
+	}
 
 	if (notify)
 		neigh_update_notify(neigh);