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From: Jon Masters <jonathan@jonmasters.org>
To: andi@firstfloor.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: PROBLEM: first read of /dev/mcelog fails
Date: Wed, 10 Nov 2010 05:40:06 -0500	[thread overview]
Message-ID: <1289385606.3916.555.camel@constitution.bos.jonmasters.org> (raw)
In-Reply-To: <1289385151.3916.554.camel@constitution.bos.jonmasters.org>

On Wed, 2010-11-10 at 05:32 -0500, Jon Masters wrote:

> I recently took some time to look at the daemon side of mcelog. I found
> a few issues with that[0] that I will detail in a separate mail, but I
> am more concerned that in recent kernels, the first read() of the mcelog
> device performed by mcelog after boot always fails. 100% reproducible on
> several machines - mcelog client always bombs out in process() due to
> getting a "no such device" error from the kernel read attempt.
> The /dev/mcelog device exists, but the first read fails.
> 
> Can you do a fresh boot, run mcelog, and see what I mean?

(most distros won't see this because they still run mcelog in a cron
script - as mentioned in your recent paper - and ignore the error)

Thanks,

Jon.



  reply	other threads:[~2010-11-10 10:40 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-10 10:32 Jon Masters
2010-11-10 10:40 ` Jon Masters [this message]
2010-11-11  9:29 ` Jon Masters

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