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);
        }