Message-ID: <4B52D822.1010700@pardus.org.tr>
Date: Sun, 17 Jan 2010 11:28:02 +0200
From: =?UTF-8?B?T3phbiDDh2HEn2xheWFu?= <ozan@pardus.org.tr>
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To: Thomas Gleixner <tglx@linutronix.de>
CC: Xiaotian Feng <dfeng@redhat.com>, damm@igel.co.jp,
       hsweeten@visionengravers.com, akpm@linux-foundation.org,
       venkatesh.pallipadi@intel.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 0/4] clockevents: fix clockevent_devices list corruption
 after cpu hotplug
References: <1260450459-18072-1-git-send-email-dfeng@redhat.com> <alpine.LFD.2.00.0912101431380.3089@localhost.localdomain>
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Thomas Gleixner wrote:

> 
> I'm not happy about that churn. Why don't we simply scan the
> clockevent_devices list for leftovers of the dead CPU ?
> 
> Untested patch below solves the same problem.


Hi, I have 3 bug reports about a clockevent failure while halting the system (2.6.31.11 kernel).
It exactly pinpoints to the line 262 which got changed with this patch merged to 2.6.31.10 (and also 2.6.32.3):

[4406.986777] kernel BUG at kernel/time/clockevents.c:262!
[4406.986777] invalid opcode: 0000 [#1] SMP
[4406.986777] last sysfs file: /sysfs/module/ip_tables/initstate


All 3 systems have Pentium 4 processors with different clock speeds.

Here's a screenshot of the full stacktrace:
http://bugs.pardus.org.tr/attachment.cgi?id=4820

and the relevant bugzilla report:
http://bugzilla.kernel.org/show_bug.cgi?id=15073

Thanks,
Ozan Caglayan
Pardus Linux -- http://www.pardus.org.tr/eng
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