/* Metin KAYA <metin at EnderUNIX.org> */

Multi PVC Crash: In vanilla kernel, there is no NULL check against the
field of the skb. Thus, it makes kernel oops if there are multiple ATM
connection.

Index: net/atm/br2684.c
===================================================================
--- net/atm/br2684.c
+++ net/atm/br2684.c
@@ -776,12 +776,17 @@

        while (skb) {
                struct sk_buff *next = skb->next;
+               if (!skb->dev)
+                       goto skip;

                skb->next = skb->prev = NULL;
                BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
                BRPRIV(skb->dev)->stats.rx_packets--;
                br2684_push(atmvcc, skb);

+       skip:
                skb = next;
        }
        __module_get(THIS_MODULE);