If this call fails, some of the orig_nodes spaces may have been
resized for the increased number of interface, and some may not.
If we would just continue with the larger number of interfaces,
this would lead to access to not allocated memory later.
We better check the return code, and don't add the interface if
no memory is available. OTOH, keeping some of the orig_nodes
with too much memory allocated should hurt no one (except for
a few too many bytes allocated).
Signed-off-by: Simon Wunderlich <s...@hrz.tu-chemnitz.de>
---
hard-interface.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/hard-interface.c b/hard-interface.c
index 282bf6e..2d7f4f2 100644
--- a/hard-interface.c
+++ b/hard-interface.c
@@ -313,7 +313,12 @@ 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--;
+ goto err_dev;
+ }
hard_iface->batman_adv_ptype.type = ethertype;
hard_iface->batman_adv_ptype.func = batadv_batman_skb_recv;
--
1.7.10
