linux-kernel - Re: [Bug #38292] slab vs lockdep vs debugobjects

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Message-ID: <1309128739.4756.4.camel@twins>
Date:	Mon, 27 Jun 2011 00:52:19 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>
Subject: Re: [Bug #38292] slab vs lockdep vs debugobjects

On Mon, 2011-06-27 at 00:31 +0200, Ingo Molnar wrote:
> * Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > On Sun, 2011-06-26 at 23:23 +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a summary report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.39.  Please verify if it still should be listed and let the tracking team
> > > know (either way).
> > 
> > who said its a regression?
> 
> I suspect Rafael saw your mail to lkml with a nasty looking lockdep 
> message in it and assumed it was a new one?
> 
> Instead it's one that always had the chance to trigger?

Yeah, its just terribly hard, you need all the various debug options
enabled and a lot of luck. There's nothing involved that changed
recently afaik.
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