diff --git a/include/net/tcp.h b/include/net/tcp.h
index f77f812bfbe7..d1948d357dad 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -2435,9 +2435,26 @@ static inline s64 tcp_rto_delta_us(const struct sock *sk)
 {
 	const struct sk_buff *skb = tcp_rtx_queue_head(sk);
 	u32 rto = inet_csk(sk)->icsk_rto;
-	u64 rto_time_stamp_us = tcp_skb_timestamp_us(skb) + jiffies_to_usecs(rto);
 
-	return rto_time_stamp_us - tcp_sk(sk)->tcp_mstamp;
+	if (likely(skb)) {
+		u64 rto_time_stamp_us = tcp_skb_timestamp_us(skb) + jiffies_to_usecs(rto);
+
+		return rto_time_stamp_us - tcp_sk(sk)->tcp_mstamp;
+	} else {
+		WARN_ONCE(1,
+			"rtx queue emtpy: "
+			"out:%u sacked:%u lost:%u retrans:%u "
+			"tlp_high_seq:%u sk_state:%u ca_state:%u "
+			"advmss:%u mss_cache:%u pmtu:%u\n",
+			tcp_sk(sk)->packets_out, tcp_sk(sk)->sacked_out,
+			tcp_sk(sk)->lost_out, tcp_sk(sk)->retrans_out,
+			tcp_sk(sk)->tlp_high_seq, sk->sk_state,
+			inet_csk(sk)->icsk_ca_state,
+			tcp_sk(sk)->advmss, tcp_sk(sk)->mss_cache,
+			inet_csk(sk)->icsk_pmtu_cookie);
+		return jiffies_to_usecs(rto);
+	}
+
 }
 
 /*