linux-kernel - Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.

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Message-ID: <20130130034204.GB30965@pd.tnic>
Date:	Wed, 30 Jan 2013 04:42:04 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	x86@...nel.org, lkml <linux-kernel@...r.kernel.org>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Uhhuh. NMI received for unknown reason 2c on CPU 0.

On Tue, Jan 29, 2013 at 02:32:56PM -0700, Bjorn Helgaas wrote:
> Konstantin has some fixes for an e1000e power management issue related
> to suspend/resume that he observed on an x220. He didn't see an NMI,
> and apparently his problem has been around for a long time,

Yeah, this is one of those issues you don't see *every* s/r cycle and
besides, I just got this box and haven't run 3.{6,7} on it yet (maybe
never will :-)).

> so no idea whether it could be related. I just noticed the conjunction
> of thinkpad/e1000e/resume/power saving in both reports.
>
> https://lkml.org/lkml/2013/1/18/147

Yes, thanks Bjorn, that was a good suggestion. Btw, from reading the
thread, those patches still need cooking a bit more, AFAICR people's
objections/comments. Or should I go ahead and test them?

It's just that I'm overly cautious every time I hear e1000e is involved:

www.linux-magazine.com/content/download/62169/484085/file/Security_Lessons_Ftrace.pdf

:-)

Thanks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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