batman-adv: protect each hash row with rcu locks

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 1b5e761d8823..4687027f1495 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -179,9 +179,11 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
 
         *new_skb = NULL;
         spin_lock_bh(&bat_priv->orig_hash_lock);
+        rcu_read_lock();
         orig_node = ((struct orig_node *)
                     hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
                               unicast_packet->orig));
+        rcu_read_unlock();
 
         if (!orig_node) {
                 pr_debug("couldn't find originator in orig_hash\n");