1 files changed, 7 insertions, 1 deletions

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 282bf6e9353e..2c5a247a8f12 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -313,7 +313,13 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
         hard_iface->if_num = bat_priv->num_ifaces;
         bat_priv->num_ifaces++;
         hard_iface->if_status = BATADV_IF_INACTIVE;
-        batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
+        ret = batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
+        if (ret < 0) {
+                bat_priv->bat_algo_ops->bat_iface_disable(hard_iface);
+                bat_priv->num_ifaces--;
+                hard_iface->if_status = BATADV_IF_NOT_IN_USE;
+                goto err_dev;
+        }
 
         hard_iface->batman_adv_ptype.type = ethertype;
         hard_iface->batman_adv_ptype.func = batadv_batman_skb_recv;