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| author | Antonio Quartulli <antonio@meshcoding.com> | 2014-02-15 02:17:20 +0100 |
|---|---|---|
| committer | Antonio Quartulli <antonio@meshcoding.com> | 2014-02-17 17:17:02 +0100 |
| commit | a5a5cb8cab526af2f6cbe9715f8ca843192f0d81 (patch) | |
| tree | 8f456b9e7f4cfb8efde3af1ce47f96321cc17d94 | |
| parent | 05c3c8a636aa9ee35ce13f65afc5b665615cc786 (diff) | |
| download | op-kernel-dev-a5a5cb8cab526af2f6cbe9715f8ca843192f0d81.zip op-kernel-dev-a5a5cb8cab526af2f6cbe9715f8ca843192f0d81.tar.gz | |
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>
| -rw-r--r-- | net/batman-adv/bat_iv_ogm.c | 6 |
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); |
