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-rw-r--r--net/batman-adv/hard-interface.c8
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;