linux-kernel - Re: [bug] SLUB & freeing locks [was: Re: 2.6.23-rc1: known regressions with patches]

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Date:	Thu, 26 Jul 2007 12:50:10 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <clameter@....com>,
	linux-kernel@...r.kernel.org
Subject: Re: [bug] SLUB & freeing locks [was: Re: 2.6.23-rc1: known
	regressions with patches]


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Thu, 2007-07-26 at 11:26 +0200, Peter Zijlstra wrote:
> > On Thu, 2007-07-26 at 11:10 +0200, Ingo Molnar wrote:
> > > there's a new regression:
> > > 
> > > SLUB does not seem to call debug_check_no_locks_freed() - hence on SLUB 
> > > we will not notice certain types of freeing races. (such as freeing an 
> > > object still locked and used on another CPU.) SLAB does this corretly.
> 
> Oh, nm, it doesn't call debug_check_no_locks_freed() at all.
> 
> This should do I guess.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

yeah.

Acked-by: Ingo Molnar <mingo@...e.hu>

	Ingo
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