diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 6a29af5cd3573a6a95bb55fc802469d12e1bd187..6a4b3962060d17fe4983bdbdff01c74d6849b4c5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -772,6 +772,7 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4,
 	int is_udplite = IS_UDPLITE(sk);
 	int offset = skb_transport_offset(skb);
 	int len = skb->len - offset;
+	int datalen = len - sizeof(*uh);
 	__wsum csum = 0;
 
 	/*
@@ -805,10 +806,12 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4,
 			return -EIO;
 		}
 
-		skb_shinfo(skb)->gso_size = cork->gso_size;
-		skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
-		skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(len - sizeof(*uh),
-							 cork->gso_size);
+		if (datalen > cork->gso_size) {
+			skb_shinfo(skb)->gso_size = cork->gso_size;
+			skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
+			skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(datalen,
+								 cork->gso_size);
+		}
 		goto csum_partial;
 	}
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index c47f065be5684f1a297e08f601d1d2b22d5c771d..4ce786e2a76082eeaa3d8a0e9e79321b59f7eac2 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1047,6 +1047,7 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6,
 	__wsum csum = 0;
 	int offset = skb_transport_offset(skb);
 	int len = skb->len - offset;
+	int datalen = len - sizeof(*uh);
 
 	/*
 	 * Create a UDP header
@@ -1079,10 +1080,12 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6,
 			return -EIO;
 		}
 
-		skb_shinfo(skb)->gso_size = cork->gso_size;
-		skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
-		skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(len - sizeof(*uh),
-							 cork->gso_size);
+		if (datalen > cork->gso_size) {
+			skb_shinfo(skb)->gso_size = cork->gso_size;
+			skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
+			skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(datalen,
+								 cork->gso_size);
+		}
 		goto csum_partial;
 	}
 
diff --git a/tools/testing/selftests/net/udpgso.c b/tools/testing/selftests/net/udpgso.c
index e279051bc6312c132999e00a13b37c2555e6b2cb..270c17ab071e46506f9a705ecdac4c4994c62484 100644
--- a/tools/testing/selftests/net/udpgso.c
+++ b/tools/testing/selftests/net/udpgso.c
@@ -90,12 +90,9 @@ struct testcase testcases_v4[] = {
 		.tfail = true,
 	},
 	{
-		/* send a single MSS: will fail with GSO, because the segment
-		 * logic in udp4_ufo_fragment demands a gso skb to be > MTU
-		 */
+		/* send a single MSS: will fall back to no GSO */
 		.tlen = CONST_MSS_V4,
 		.gso_len = CONST_MSS_V4,
-		.tfail = true,
 		.r_num_mss = 1,
 	},
 	{
@@ -140,10 +137,9 @@ struct testcase testcases_v4[] = {
 		.tfail = true,
 	},
 	{
-		/* send a single 1B MSS: will fail, see single MSS above */
+		/* send a single 1B MSS: will fall back to no GSO */
 		.tlen = 1,
 		.gso_len = 1,
-		.tfail = true,
 		.r_num_mss = 1,
 	},
 	{
@@ -197,12 +193,9 @@ struct testcase testcases_v6[] = {
 		.tfail = true,
 	},
 	{
-		/* send a single MSS: will fail with GSO, because the segment
-		 * logic in udp4_ufo_fragment demands a gso skb to be > MTU
-		 */
+		/* send a single MSS: will fall back to no GSO */
 		.tlen = CONST_MSS_V6,
 		.gso_len = CONST_MSS_V6,
-		.tfail = true,
 		.r_num_mss = 1,
 	},
 	{
@@ -247,10 +240,9 @@ struct testcase testcases_v6[] = {
 		.tfail = true,
 	},
 	{
-		/* send a single 1B MSS: will fail, see single MSS above */
+		/* send a single 1B MSS: will fall back to no GSO */
 		.tlen = 1,
 		.gso_len = 1,
-		.tfail = true,
 		.r_num_mss = 1,
 	},
 	{