[PATCH] ipchains_core GFP_KERNEL fix

  [ Made applicable with -p1 by Rusty ]

  nlma fixes a call to netlink_broadcast with GFP_KERNEL ( passed to
  skb_clone ) while we are in_interrupt() ( catched by a BUG() in
  slab.c:1109 ).

net/ipv4/netfilter/ipchains_core.c

@@ -549,7 +549,7 @@ ip_fw_domatch(struct ip_fwkernel *f,
 			strcpy(outskb->data+sizeof(__u32)*2, rif);
 			memcpy(outskb->data+sizeof(__u32)*2+IFNAMSIZ, ip,
 			       len-(sizeof(__u32)*2+IFNAMSIZ));
-			netlink_broadcast(ipfwsk, outskb, 0, ~0, GFP_KERNEL);
+			netlink_broadcast(ipfwsk, outskb, 0, ~0, GFP_ATOMIC);
 		}
 		else {
 #endif