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authorLinus Lüssing <linus.luessing@ascom.ch>2011-02-13 21:13:04 +0000
committerMarek Lindner <lindner_marek@yahoo.de>2011-03-05 12:50:12 +0100
commit43c70ad5ce5691cce24dae6610731694c0f3fcc8 (patch)
tree7dc7a769a166f846aebac8e37b3dfcdad9b6dc86 /net/batman-adv/gateway_client.c
parent5d02b3cdfafeb23ab7cf43ef1d2118007370e8d0 (diff)
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batman-adv: Increase orig_node refcount before releasing rcu read lock
When unicast_send_skb() is increasing the orig_node's refcount another thread might have been freeing this orig_node already. We need to increase the refcount in the rcu read lock protected area to avoid that. Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/gateway_client.c')
-rw-r--r--net/batman-adv/gateway_client.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index a3e842f..41eba8a 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -54,6 +54,9 @@ void *gw_get_selected(struct bat_priv *bat_priv)
orig_node = curr_gateway_tmp->orig_node;
+ if (orig_node)
+ kref_get(&orig_node->refcount);
+
out:
rcu_read_unlock();
return orig_node;