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authorAntonio Quartulli <antonio@meshcoding.com>2014-02-15 02:17:20 +0100
committerAntonio Quartulli <antonio@meshcoding.com>2014-02-17 17:17:02 +0100
commita5a5cb8cab526af2f6cbe9715f8ca843192f0d81 (patch)
tree8f456b9e7f4cfb8efde3af1ce47f96321cc17d94 /net/batman-adv
parent05c3c8a636aa9ee35ce13f65afc5b665615cc786 (diff)
downloadop-kernel-dev-a5a5cb8cab526af2f6cbe9715f8ca843192f0d81.zip
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batman-adv: avoid double free when orig_node initialization fails
In the failure path of the orig_node initialization routine the orig_node->bat_iv.bcast_own field is free'd twice: first in batadv_iv_ogm_orig_get() and then later in batadv_orig_node_free_rcu(). Fix it by removing the kfree in batadv_iv_ogm_orig_get(). Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/bat_iv_ogm.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 42cbc0a..8323bce 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -241,18 +241,16 @@ batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr)
size = bat_priv->num_ifaces * sizeof(uint8_t);
orig_node->bat_iv.bcast_own_sum = kzalloc(size, GFP_ATOMIC);
if (!orig_node->bat_iv.bcast_own_sum)
- goto free_bcast_own;
+ goto free_orig_node;
hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
batadv_choose_orig, orig_node,
&orig_node->hash_entry);
if (hash_added != 0)
- goto free_bcast_own;
+ goto free_orig_node;
return orig_node;
-free_bcast_own:
- kfree(orig_node->bat_iv.bcast_own);
free_orig_node:
/* free twice, as batadv_orig_node_new sets refcount to 2 */
batadv_orig_node_free_ref(orig_node);
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