ipv4: Fix time difference calculation in rt_bind_exception().

Reported-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jul 19, 2012 · 7fed84f · 7fed84f
1 parent 1eb8c69
commit 7fed84f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
@@ -1907,7 +1907,7 @@ static void rt_bind_exception(struct rtable *rt, struct fib_nh *nh, __be32 daddr
 		if (fnhe->fnhe_daddr == daddr) {
 			if (fnhe->fnhe_pmtu) {
 				unsigned long expires = fnhe->fnhe_expires;
-				unsigned long diff = jiffies - expires;
+				unsigned long diff = expires - jiffies;
 
 				if (time_before(jiffies, expires)) {
 					rt->rt_pmtu = fnhe->fnhe_pmtu;