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-rw-r--r--net/ipv4/route.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d2d325382b13..f428935c50db 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1036,6 +1036,10 @@ void ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu)
bool new = false;
bh_lock_sock(sk);
+
+ if (!ip_sk_accept_pmtu(sk))
+ goto out;
+
rt = (struct rtable *) __sk_dst_get(sk);
if (sock_owned_by_user(sk) || !rt) {

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