linux-kernel - Re: [FALSE ALARM] Re: HPET (?) related hangs and breakage in 2.6.35,36

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Message-ID: <AANLkTimNuSJz0nXZCR2zu963VQ_Y9R8ix73+QbbUy7nt@mail.gmail.com>
Date:	Wed, 10 Nov 2010 14:02:48 -0500
From:	Andrew Lutomirski <luto@....edu>
To:	Borislav Petkov <bp@...64.org>
Cc:	Clemens Ladisch <clemens@...isch.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	x86 <x86@...nel.org>,
	Jörg Rödel <joerg.roedel@....com>
Subject: Re: [FALSE ALARM] Re: HPET (?) related hangs and breakage in 2.6.35,36

On Wed, Nov 10, 2010 at 1:50 PM, Borislav Petkov <bp@...64.org> wrote:
> On Wed, Nov 10, 2010 at 01:48:00PM -0500, Andrew Lutomirski wrote:
>> > Clocksource: tsc unstable (delta = -34355296774 ns)
>> > Switching: to clocksource hpet
>>
>> Please disregard -- this is a bug in nouveau (or drm) not hpet.  I'll
>> send a bug report to the maintainers.
>
> Interesting! Joerg was complaining about similar symptoms with .36 today
> too.

Well, there is a clocksource sort-of-bug that could cause confusion:
when something totally unrelated to clocksources goes out to lunch,
the clocksource watchdog decides that the clocksource is unstable and
complains, steering everyone toward filing the wrong bug.

tglx?

>
> --
> Regards/Gruss,
> Boris.
>
> Advanced Micro Devices GmbH
> Einsteinring 24, 85609 Dornach
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>
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