diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 5d57d2db8a72..d1e8dd12fbae 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -278,6 +278,12 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
 	/* gso_segs is allowed */
 
 	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_segs),
+			   offsetof(struct __sk_buff, gso_size)))
+		return -EINVAL;
+
+	/* gso_size is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
 			   sizeof(struct __sk_buff)))
 		return -EINVAL;
 
@@ -298,6 +304,7 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
 	if (__skb->gso_segs > GSO_MAX_SEGS)
 		return -EINVAL;
 	skb_shinfo(skb)->gso_segs = __skb->gso_segs;
+	skb_shinfo(skb)->gso_size = __skb->gso_size;
 
 	return 0;
 }