[PATCH] PKT_SCHED act_gact: division by zero

Not returning -EINVAL, because someone might want to use the value
zero in some future gact_prob algorithm?
Signed-off-by: Kim Nordlund <kim.nordlund@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

net/sched/act_gact.c

@@ -54,14 +54,14 @@ static DEFINE_RWLOCK(gact_lock);
 #ifdef CONFIG_GACT_PROB
 static int gact_net_rand(struct tcf_gact *p)
 {
-	if (net_random()%p->pval)
+	if (!p->pval || net_random()%p->pval)
 		return p->action;
 	return p->paction;
 }
 
 static int gact_determ(struct tcf_gact *p)
 {
-	if (p->bstats.packets%p->pval)
+	if (!p->pval || p->bstats.packets%p->pval)
 		return p->action;
 	return p->paction;
 }