linux-kernel - Re: sun4i_handle_irq: WARNING at net/ipv4/tcp_input.c:2711 tcp_fastretrans

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Message-ID: <20131017123203.GM3041@lukather>
Date:	Thu, 17 Oct 2013 14:32:03 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Richard Genoud <richard.genoud@...il.com>
Cc:	Stefan Roese <sr@...x.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: sun4i_handle_irq: WARNING at net/ipv4/tcp_input.c:2711
 tcp_fastretrans_alert

Hi Richard

On Thu, Oct 17, 2013 at 01:46:49PM +0200, Richard Genoud wrote:
> > Hmmm, that seems pretty far from the network/interrupt drivers, and it
> > looks like other users have seen this on !ARM machines:
> > http://forums.gentoo.org/viewtopic-p-7379928.html
> > https://bugzilla.redhat.com/show_bug.cgi?id=989251
> >
> > There's a patch in the redhat's bugzilla, could you try to apply it and
> > see if it solves your problem?
> >
> > Maybe the netdev guys will have other ideas as well.
> For the record, I set:
> net.ipv4.tcp_early_retrans = 2
> net.ipv4.tcp_frto = 0
> And I didn't see the warning any more.
> It's seems that a patch is on it's way. I'll try it instead of setting
> the sysctl.
> http://thread.gmane.org/gmane.linux.network/286793

Ah, I wanted to ask you about the status of this.

Thanks for the follow-up,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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