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-rw-r--r--net/ipv4/route.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 155138d8ec8..511f4a75149 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2845,7 +2845,7 @@ static int rt_fill_info(struct net *net,
struct rtable *rt = skb_rtable(skb);
struct rtmsg *r;
struct nlmsghdr *nlh;
- long expires = 0;
+ unsigned long expires = 0;
const struct inet_peer *peer = rt->peer;
u32 id = 0, ts = 0, tsage = 0, error;
@@ -2902,8 +2902,12 @@ static int rt_fill_info(struct net *net,
tsage = get_seconds() - peer->tcp_ts_stamp;
}
expires = ACCESS_ONCE(peer->pmtu_expires);
- if (expires)
- expires -= jiffies;
+ if (expires) {
+ if (time_before(jiffies, expires))
+ expires -= jiffies;
+ else
+ expires = 0;
+ }
}
if (rt_is_input_route(rt)) {