diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1b2e7cbb577f..06731cfed374 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1022,8 +1022,14 @@ static void __mptcp_clean_una(struct sock *sk)
 
 		if (unlikely(dfrag == msk->first_pending)) {
 			/* in recovery mode can see ack after the current snd head */
-			if (WARN_ON_ONCE(!msk->recovery))
+			if (!msk->recovery) {
+				pr_err("snd_una %llx snd_nxt %llx write_seq %llx idsn %llx dfrag seq %llx len %d\n",
+				       snd_una, msk->snd_nxt, msk->write_seq,
+				       mptcp_subflow_ctx(msk->first)->idsn,
+				       dfrag->data_seq, dfrag->data_len);
+				WARN_ON(1);
 				break;
+			}
 
 			WRITE_ONCE(msk->first_pending, mptcp_send_next(sk));
 		}