linux-kernel - Re: [RFC/PATCH] mm/futex: Fix futex writes on archs with SW tracking of dirty & young

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Message-ID: <1311298815.25044.562.camel@pasglop>
Date:	Fri, 22 Jul 2011 11:40:15 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Shan Hai <haishan.bai@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, paulus@...ba.org,
	tglx@...utronix.de, walken@...gle.com, dhowells@...hat.com,
	cmetcalf@...era.com, tony.luck@...el.com,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC/PATCH] mm/futex: Fix futex writes on archs with SW
 tracking of dirty & young


> You're not understanding me.
> 
> I need a good reason to merge this into 3.0.
> 
> The -stable maintainers need even better reasons to merge this into
> earlier kernels.
> 
> Please provide those reasons!
> 
> (Documentation/stable_kernel_rules.txt, 4th bullet)
> 
> (And it's not just me and -stable maintainers.  Distro maintainers will
> also look at this patch and wonder whether they should merge it)

Well, as an arch maintainer, I can get stable maintainers to merge
anything I CC to stable :-)

Now, the good reason should have been rather obvious... it's a user
exploitable kernel lockup.

Cheers,
Ben.


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