netdev - Re: [PATCH] tcp: fix an infinite loop in tcp_slow

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Message-Id: <20130203.160104.248557521548380645.davem@davemloft.net>
Date:	Sun, 03 Feb 2013 16:01:04 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	pasik@....fi, hannes@...essinduktion.org,
	stephen@...workplumber.org, netdev@...r.kernel.org,
	ncardwell@...gle.com, ycheng@...gle.com
Subject: Re: [PATCH] tcp: fix an infinite loop in tcp_slow_start()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sat, 02 Feb 2013 07:23:16 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Since commit 9dc274151a548 (tcp: fix ABC in tcp_slow_start()),
> a nul snd_cwnd triggers an infinite loop in tcp_slow_start()
> 
> Avoid this infinite loop and log a one time error for further
> analysis. FRTO code is suspected to cause this bug.
> 
> Reported-by: Pasi Kärkkäinen <pasik@....fi>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.
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