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Diffstat (limited to 'net/batman-adv/gateway_client.c')
-rw-r--r--net/batman-adv/gateway_client.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index c835e137423b..90cff585b37d 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -42,8 +42,10 @@
42 42
43static void batadv_gw_node_free_ref(struct batadv_gw_node *gw_node) 43static void batadv_gw_node_free_ref(struct batadv_gw_node *gw_node)
44{ 44{
45 if (atomic_dec_and_test(&gw_node->refcount)) 45 if (atomic_dec_and_test(&gw_node->refcount)) {
46 batadv_orig_node_free_ref(gw_node->orig_node);
46 kfree_rcu(gw_node, rcu); 47 kfree_rcu(gw_node, rcu);
48 }
47} 49}
48 50
49static struct batadv_gw_node * 51static struct batadv_gw_node *
@@ -406,9 +408,14 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
406 if (gateway->bandwidth_down == 0) 408 if (gateway->bandwidth_down == 0)
407 return; 409 return;
408 410
411 if (!atomic_inc_not_zero(&orig_node->refcount))
412 return;
413
409 gw_node = kzalloc(sizeof(*gw_node), GFP_ATOMIC); 414 gw_node = kzalloc(sizeof(*gw_node), GFP_ATOMIC);
410 if (!gw_node) 415 if (!gw_node) {
416 batadv_orig_node_free_ref(orig_node);
411 return; 417 return;
418 }
412 419
413 INIT_HLIST_NODE(&gw_node->list); 420 INIT_HLIST_NODE(&gw_node->list);
414 gw_node->orig_node = orig_node; 421 gw_node->orig_node = orig_node;