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batman-adv: fix NULL pointer dereferences 

Was introduced with 4c8755d69c
("batman-adv: Send multicast packets to nodes with a WANT_ALL flag")

Reported-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Acked-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
This commit is contained in:
Marek Lindner 2014-04-24 03:41:26 +08:00 committed by Antonio Quartulli
parent 554215c5ca
commit af0a171c07
1 changed files with 3 additions and 3 deletions
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6
net/batman-adv/multicast.c
View File

@ -415,7 +415,7 @@ batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv)
hlist_for_each_entry_rcu(tmp_orig_node,
&bat_priv->mcast.want_all_ipv4_list,
mcast_want_all_ipv4_node) {
if (!atomic_inc_not_zero(&orig_node->refcount))
if (!atomic_inc_not_zero(&tmp_orig_node->refcount))
continue;
orig_node = tmp_orig_node;
@ -442,7 +442,7 @@ batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv)
hlist_for_each_entry_rcu(tmp_orig_node,
&bat_priv->mcast.want_all_ipv6_list,
mcast_want_all_ipv6_node) {
if (!atomic_inc_not_zero(&orig_node->refcount))
if (!atomic_inc_not_zero(&tmp_orig_node->refcount))
continue;
orig_node = tmp_orig_node;
@ -493,7 +493,7 @@ batadv_mcast_forw_unsnoop_node_get(struct batadv_priv *bat_priv)
hlist_for_each_entry_rcu(tmp_orig_node,
&bat_priv->mcast.want_all_unsnoopables_list,
mcast_want_all_unsnoopables_node) {
if (!atomic_inc_not_zero(&orig_node->refcount))
if (!atomic_inc_not_zero(&tmp_orig_node->refcount))
continue;
orig_node = tmp_orig_node;