--- linux-2.6.orig/net/core/netpoll.c	2007-12-18 21:58:41.000000000 +0800
+++ linux-2.6/net/core/netpoll.c	2007-12-18 21:59:01.000000000 +0800
@@ -160,6 +160,11 @@ repeat:
 		return;
 	}
 
+        if(np->dev->xmit_lock_owner == smp_processor_id()) {
+		__kfree_skb(skb);
+		return;
+	}
+
 	spin_lock(&np->dev->xmit_lock);
 	np->dev->xmit_lock_owner = smp_processor_id();