linux-kernel - Re: [ANNOUNCE] kmemcheck v7

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Date:	Sat, 10 May 2008 23:59:19 +0100
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Vegard Nossum <vegard.nossum@...il.com>,
	Bart Van Assche <bart.vanassche@...il.com>,
	John Reiser <jreiser@...Wagon.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Christoph Lameter <clameter@....com>,
	Daniel Walker <dwalker@...sta.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Josh Aune <luken@...er.org>, Pekka Paalanen <pq@....fi>
Subject: Re: [ANNOUNCE] kmemcheck v7

Andi Kleen wrote:
>> Yeah, as soon as the stack pointer changes, everything below it is 
>> invalidated (except if the stack-pointer change was actually determined 
>> to be a stack switch).
>>     
>
> It might in theory, but at least it doesn't for my test program.
>   

If you'd read a tiny bit further down my mail, you'd have seen my 
explanation of why your test program isn't testing what you think it is, 
and a variant which does.

    J
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