commit ad676e0dbbe8658ce46e192f449689bf3011bdf5
Author: Patrick McHardy <kaber@trash.net>
Date:   Tue Apr 12 17:37:04 2011 +0200

    connector: fix skb double free in cn_rx_skb()
    
    When a skb is delivered to a registered callback, cn_call_callback()
    incorrectly returns -ENODEV after freeing the skb, causing cn_rx_skb()
    to free the skb a second time.
    
    Reported-by: Eric B Munson <emunson@mgebm.net>
    Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index d770058..219d88a 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -142,6 +142,7 @@ static int cn_call_callback(struct sk_buff *skb)
 		cbq->callback(msg, nsp);
 		kfree_skb(skb);
 		cn_queue_release_callback(cbq);
+		err = 0;
 	}
 
 	return err;