[B.A.T.M.A.N.] [PATCH v2 1/3] batman-adv: Fix orig_node_vlan leak on orig_node_release

[Sven Eckelmann]

batadv_orig_node_new uses batadv_orig_node_vlan_new to allocate a new
batadv_orig_node_vlan and add it to batadv_orig_node::vlan_list. References
to this list have also to be cleaned when the batadv_orig_node is removed.

Fixes: 21a57f6e7a3b ("batman-adv: make the TT CRC logic VLAN specific")
Signed-off-by: Sven Eckelmann <s...@narfation.org>
--
v2:
 - nothing changed
---
 net/batman-adv/originator.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 8755e5c..40626b4 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -786,6 +786,7 @@ static void batadv_orig_node_release(struct kref *ref)
        struct batadv_neigh_node *neigh_node;
        struct batadv_orig_node *orig_node;
        struct batadv_orig_ifinfo *orig_ifinfo;
+       struct batadv_orig_node_vlan *vlan;
 
        orig_node = container_of(ref, struct batadv_orig_node, refcount);
 
@@ -805,6 +806,13 @@ static void batadv_orig_node_release(struct kref *ref)
        }
        spin_unlock_bh(&orig_node->neigh_list_lock);
 
+       spin_lock_bh(&orig_node->vlan_list_lock);
+       hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) {
+               hlist_del_rcu(&vlan->list);
+               batadv_orig_node_vlan_put(vlan);
+       }
+       spin_unlock_bh(&orig_node->vlan_list_lock);
+
        /* Free nc_nodes */
        batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
 
-- 
2.8.1