From 6db636c4573019eca67287daeaa4755402f469cc Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 30 Aug 2021 19:02:10 -0700 Subject: [PATCH] ipv4: fix endianness issue in inet_rtm_getroute_build_skb() [ Upstream commit 92548b0ee220e000d81c27ac9a80e0ede895a881 ] The UDP length field should be in network order. This removes the following sparse error: net/ipv4/route.c:3173:27: warning: incorrect type in assignment (different base types) net/ipv4/route.c:3173:27: expected restricted __be16 [usertype] len net/ipv4/route.c:3173:27: got unsigned long Fixes: 404eb77ea766 ("ipv4: support sport, dport and ip_proto in RTM_GETROUTE") Signed-off-by: Eric Dumazet Cc: Roopa Prabhu Cc: David Ahern Reviewed-by: David Ahern Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv4/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 70eba1c33fa4c..f495fad73be90 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3061,7 +3061,7 @@ static struct sk_buff *inet_rtm_getroute_build_skb(__be32 src, __be32 dst, udph = skb_put_zero(skb, sizeof(struct udphdr)); udph->source = sport; udph->dest = dport; - udph->len = sizeof(struct udphdr); + udph->len = htons(sizeof(struct udphdr)); udph->check = 0; break; }