1 files changed, 1 insertions, 1 deletions

diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 63ad63dfd252..3e0c882c90bf 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -112,7 +112,7 @@ errout:
 }
 
 static struct nla_policy dn_fib_rule_policy[FRA_MAX+1] __read_mostly = {
-        [FRA_IFNAME]    = { .type = NLA_STRING },
+        [FRA_IFNAME]    = { .type = NLA_STRING, .len = IFNAMSIZ - 1 },
         [FRA_PRIORITY]  = { .type = NLA_U32 },
         [FRA_SRC]       = { .type = NLA_U16 },
         [FRA_DST]       = { .type = NLA_U16 },