--- ./net/netfilter/x_tables.c.xxx	2006-12-11 17:16:38.000000000 +0300
+++ ./net/netfilter/x_tables.c	2006-12-14 14:16:33.000000000 +0300
@@ -97,7 +97,7 @@ static int recharge_xtables(int check_ub
 	if (unlikely(check_ub))
 		BUG_ON(ub != mem_ub(old));
 
-	change = new->number - old->number;
+	change = (long)new->number - (long)old->number;
 	if (change > 0) {
 		if (charge_xtables(ub, change))
 			return -ENOMEM;