netdev - Re: WARNING: at net/ipv4/tcp

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Message-ID: <481C54AF.1050109@andyfurniss.entadsl.com>
Date:	Sat, 03 May 2008 13:03:59 +0100
From:	Andy Furniss <lists@...yfurniss.entadsl.com>
To:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
CC:	Netdev <netdev@...r.kernel.org>
Subject: Re: WARNING: at net/ipv4/tcp_input.c

Ilpo Järvinen wrote:

> I suppose it flooded the log so that head of the log got lost already 
> before userspace could consume it... (I think it's ringbuffer or something 
> though I'm not sure), it might be wise to enlarge it (I think it's 
> controlled through CONFIG_LOG_BUF_SHIFT).
> 
> Since I've not yet found any other path that could lead to it except the 
> yesterday's false-positive, getting the write queue state more accurately 
> captured by the debug patch on the very first occassion might help. Here's 
> less spammy version of the debug patch (I added one printout as well to 
> get more usefulness to transitional state reported).
> 

OK, increased CONFIG_LOG_BUF_SHIFT from 14 to 18 and reversed old / 
applied new patch.

Andy.

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