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-rw-r--r--net/mpls/af_mpls.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index c70d750148b6..3be29cb1f658 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -534,6 +534,10 @@ static int mpls_nh_assign_dev(struct net *net, struct mpls_route *rt,
if (!mpls_dev_get(dev))
goto errout;
+ if ((nh->nh_via_table == NEIGH_LINK_TABLE) &&
+ (dev->addr_len != nh->nh_via_alen))
+ goto errout;
+
RCU_INIT_POINTER(nh->nh_dev, dev);
return 0;