linux-kernel - Re: 2.6.24-rc6-git12: Reported regressions from 2.6.23

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Message-Id: <200801080054.57916.rjw@sisk.pl>
Date:	Tue, 8 Jan 2008 00:54:56 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Parag Warudkar" <parag.warudkar@...il.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Adrian Bunk" <bunk@...nel.org>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: 2.6.24-rc6-git12: Reported regressions from 2.6.23

On Tuesday, 8 of January 2008, Parag Warudkar wrote:
> On Jan 6, 2008 2:11 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> >
> > On Sunday, 6 of January 2008, Parag Warudkar wrote:
> > > On Jan 6, 2008 7:57 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > > > On Sunday, 6 of January 2008, Ingo Molnar wrote:
> > > > >
> > > > > * Rafael J. Wysocki <rjw@...k.pl> wrote:
> > > > >
> > > > > > Subject             : soft lockup - CPU#1 stuck for 15s! [swapper:0]
> > > > > > Submitter   : "Parag Warudkar" <parag.warudkar@...il.com>
> > > > > > Date                : 2007-12-07 18:14
> > > > > > References  : http://lkml.org/lkml/2007/12/7/299
> > > > > >               http://bugzilla.kernel.org/show_bug.cgi?id=9525
> > > > > > Handled-By  : "Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
> > > > > >               Thomas Gleixner <tglx@...utronix.de>
> > > > > >               Ingo Molnar <mingo@...e.hu>
> > > > >
> > > > > i think this only occurs with cpuidle, right? drivers/cpuidle/ and
> > > > > CPU_IDLE is new in 2.6.24 so this appears to be a bug in that code (or a
> > > > > bug elsewhere triggered by that code), not a regression from v2.6.23.
> > > >
> > > > OK, removed from the regressions list.
> > >
> > > Nope - actually it did happen without CPU_IDLE so it is definitely a regression.
> > > (See http://lkml.org/lkml/2007/12/17/93 )
> > >
> > > And it does happen with latest git which I believe has your patch Ingo.
> > >
> > > So I would suggest to keep it on the list of regressions.
> >
> > OK
> >
> > Thanks for the clarification.
> >
> 
> BTW, I have so far tested 2.6.24-rc4/5/6/7 and 2.6.23.12 - all of
> which have this problem.

Well, now you're saying 2.6.23.12 is also affected, so this doesn't seem to
be a recent regression in fact?

Rafael
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