diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 722c9cb..41f4b86 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2504,11 +2504,8 @@
 				    (tcp_fackets_out(tp) > tp->reordering));
 	int fast_rexmit = 0;
 
-	/* Some technical things:
-	 * 1. Reno does not count dupacks (sacked_out) automatically. */
-	if (!tp->packets_out)
+	if (WARN_ON(!tp->packets_out && tp->sacked_out))
 		tp->sacked_out = 0;
-
 	if (WARN_ON(!tp->sacked_out && tp->fackets_out))
 		tp->fackets_out = 0;