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batman-adv: fix potential orig_node reference leak 

Since batadv_orig_node_new() sets the refcount to two, assuming that
the calling function will use a reference for putting the orig_node into
a hash or similar, both references must be freed if initialization of
the orig_node fails. Otherwise that object may be leaked in that error
case.

Reported-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
This commit is contained in:
Simon Wunderlich 2014-02-08 16:45:06 +01:00 committed by Antonio Quartulli
parent 08bf0ed29c
commit b2262df7fc
1 changed files with 2 additions and 0 deletions
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2
net/batman-adv/bat_iv_ogm.c
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@ -254,6 +254,8 @@ batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr)
free_bcast_own: free_bcast_own:
kfree(orig_node->bat_iv.bcast_own); kfree(orig_node->bat_iv.bcast_own);
free_orig_node: free_orig_node:
/* free twice, as batadv_orig_node_new sets refcount to 2 */
batadv_orig_node_free_ref(orig_node);
batadv_orig_node_free_ref(orig_node); batadv_orig_node_free_ref(orig_node);
return NULL; return NULL;