NULL pointer bug in netpoll.c

[Jan Kiszka]

Hi,

it seems that there is a gremlin sleeping in 
net/core/netpoll.c:find_skb(). Even if no more buffers are available 
through "skbs", "skb" is dereferenced anyway. The tiny patch should fix it.

Jan
--- linux-2.6.11.4/net/core/netpoll.c.orig	2005-03-16 01:09:19.000000000 +0100
+++ linux-2.6.11.4/net/core/netpoll.c	2005-03-19 21:42:41.573018776 +0100
@@ -165,10 +165,11 @@ repeat:
 	if (!skb) {
 		spin_lock_irqsave(&skb_list_lock, flags);
 		skb = skbs;
-		if (skb)
+		if (skb) {
 			skbs = skb->next;
-		skb->next = NULL;
-		nr_skbs--;
+			skb->next = NULL;
+			nr_skbs--;
+		}
 		spin_unlock_irqrestore(&skb_list_lock, flags);
 	}