From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Lukasz Trabinski <lukasz@wsisiz.edu.pl>,
linux-kernel@vger.kernel.org,
Bartlomiej Solarz-Niesluchowski <solarz@wsisiz.edu.pl>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 2.6.20 BUG: soft lockup detected on CPU#0!
Date: Thu, 8 Feb 2007 00:15:40 -0800 [thread overview]
Message-ID: <20070208001540.812f423a.akpm@linux-foundation.org> (raw)
In-Reply-To: <20070208080644.GA14579@elte.hu>
On Thu, 8 Feb 2007 09:06:44 +0100 Ingo Molnar <mingo@elte.hu> wrote:
>
> * Andrew Morton <akpm@linux-foundation.org> wrote:
>
> > The softlock detector has a long history of false positives and
> > precious few true positives, in my experience.
>
> hm, not so the latest & lamest in my experience. The commit that made it
> quite robust was 6687a97d4041f996f725902d2990e5de6ef5cbe5, as of March
> 2006, and first showed up in 2.6.17. (OTOH, since the merge of lockdep
> the main source of soft lockups in the field has been quite severely
> reduced. Nevertheless it's still good to have it around, occasionally
> there happen other types of soft lockups too, in open-coded loops, etc.)
>
So... what caused Lukasz's lockup?
next prev parent reply other threads:[~2007-02-08 8:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-07 23:02 2.6.20 BUG: soft lockup detected on CPU#0! Lukasz Trabinski
2007-02-08 4:47 ` Andrew Morton
2007-02-08 8:06 ` Ingo Molnar
2007-02-08 8:15 ` Andrew Morton [this message]
2007-02-08 9:16 ` Eric Dumazet
2007-02-08 9:56 ` Ingo Molnar
2007-02-08 10:12 ` Andrew Morton
2007-02-08 15:51 ` Lukasz Trabinski
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