D36637.1793655769.diff
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	diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c
	--- a/sys/netinet/tcp_output.c
	+++ b/sys/netinet/tcp_output.c
	@@ -415,7 +415,7 @@
	else {
	int32_t cwin;

	- /*
	+ /*
	* We are inside of a SACK recovery episode and are
	* sending new data, having retransmitted all the
	* data possible in the scoreboard.
	@@ -431,8 +431,8 @@
	* of len is bungled by the optimizer.
	*/
	if (len > 0) {
	- cwin = tp->snd_cwnd -
	- (tp->snd_nxt - tp->snd_recover) -
	+ cwin = tp->snd_cwnd - imax(0, (int32_t)
	+ (tp->snd_nxt - tp->snd_recover)) -
	sack_bytes_rxmt;
	if (cwin < 0)
	cwin = 0;