linux-kernel - Re: [WARNING] lockdep and kmemcheck_alloc

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Message-ID: <20120611110359.GA17022@x1.osrc.amd.com>
Date:	Mon, 11 Jun 2012 13:04:00 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	David Rientjes <rientjes@...gle.com>, Rus <rus@...nxsoft.com>
Cc:	Ben Hutchings <ben@...adent.org.uk>,
	Steven Rostedt <rostedt@...dmis.org>,
	Christoph Lameter <cl@...ux.com>,
	LKML <linux-kernel@...r.kernel.org>,
	stable <stable@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [WARNING] lockdep and kmemcheck_alloc_shadow

On Mon, Jun 11, 2012 at 02:56:03AM -0700, David Rientjes wrote:
> On Sun, 20 May 2012, David Rientjes wrote:
> 
> > Agreed, slab handles this correctly and it looks like slub ends up 
> > disabling irqs too early.
> > 
> > Does this fix it?  If so, we'll need to annotate it for stable as Ben 
> > noted.
> > 
> 
> Steven, did you have a chance to see if this fixes the issue for you?  Can 
> I add your Tested-by?

Hehe,

this got triggered through a different path too:
http://marc.info/?l=linux-kernel&m=133909780907766

@Rus: Can you pls test David's patch? I'm re-attaching it here.

Thanks.

-- 
Regards/Gruss,
Boris.

View attachment "mm-slub-irq-disable-fix.diff" of type "text/x-diff" (1225 bytes)