netdev - Re: 2.6.21-rc1: known regressions (v2) (part 2)

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Date:	Tue, 27 Feb 2007 09:33:53 +0100
From:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"David P. Reed" <dpreed@...d.com>,
	Ayaz Abdulla <aabdulla@...dia.com>, jgarzik@...ox.com,
	netdev@...r.kernel.org,
	Albert Hopkins <kernel@...duk.letterboxes.org>,
	Bob Tracy <rct@...rkin.frus.com>,
	Mark Brown <broonie@...ena.org.uk>,
	"Michael S. Tsirkin" <mst@...lanox.co.il>,
	Ingo Molnar <mingo@...e.hu>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
Subject: Re: 2.6.21-rc1: known regressions (v2) (part 2)

Thomas Gleixner napisał(a):
> Adrian,
> 
> On Mon, 2007-02-26 at 23:05 +0100, Adrian Bunk wrote:
>> Subject    : kernel BUG at kernel/time/tick-sched.c:168  (CONFIG_NO_HZ)
>> References : http://lkml.org/lkml/2007/2/16/346
>> Submitter  : Michal Piotrowski <michal.k.k.piotrowski@...il.com>
>> Handled-By : Thomas Gleixner <tglx@...utronix.de>
>> Status     : problem is being debugged
> 
> The BUG_ON() was replaced by a warning printk(). The BUG_ON() exposed a
> problem with the SMT scheduler. See below.
> 
>> Subject    : BUG: soft lockup detected on CPU#0
>>              NOHZ: local_softirq_pending 20  (SMT scheduler)
>> References : http://lkml.org/lkml/2007/2/20/257
>> Submitter  : Michal Piotrowski <michal.k.k.piotrowski@...il.com>
>> Handled-By : Thomas Gleixner <tglx@...utronix.de>
>>              Ingo Molnar <mingo@...e.hu>
>> Status     : problem is being debugged
> 
> Patch available, not confirmed yet.
> 

I can confirm that the bug is fixed (over 20 hours of testing should be enough).

Huge thanks!

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)
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