1 files changed, 7 insertions, 0 deletions

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index d12694353540..5f28131eb37e 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -846,6 +846,13 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
                 __net_timestamp(skb);
 
         if (likely(clone_it)) {
+                const struct sk_buff *fclone = skb + 1;
+
+                if (unlikely(skb->fclone == SKB_FCLONE_ORIG &&
+                             fclone->fclone == SKB_FCLONE_CLONE))
+                        NET_INC_STATS_BH(sock_net(sk),
+                                         LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES);
+
                 if (unlikely(skb_cloned(skb)))
                         skb = pskb_copy(skb, gfp_mask);
                 else