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

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Message-ID: <4CD966D8.4000602@ladisch.de>
Date:	Tue, 09 Nov 2010 16:20:56 +0100
From:	Clemens Ladisch <clemens@...isch.de>
To:	Andrew Lutomirski <luto@....edu>
CC:	linux-kernel@...r.kernel.org
Subject: Re: HPET (?) related hangs and breakage in 2.6.35,36

Andrew Lutomirski wrote:
> After several minutes of uptime, my system freezes in a strange way.
> All of userspace and some kernel services freeze hard (no mouse, no
> typing, etc.)  Caps-lock works intermittently, as does (I think)
> pinging.  The only debug output I've been able to get is this (typed
> from a blurry photo because netconsole dies along with everything
> else):
> 
> [ 5478.244722] Clocksource tsc unstable (delta = 101399051316 ns)
> [ 5478.367958] Switching to clocksource hpet
> [ 5543.729698] BUG: soft lockup - CPU #1 stuck for 61s! [migration/1:6]

Looks like this one:
http://lkml.org/lkml/2010/10/26/126


Regards,
Clemens
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