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Date: Fri, 22 May 2009 14:39:14 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Larry H." <research@subreption.com>
Cc: Ingo Molnar <mingo@elte.hu>, Rik van Riel <riel@redhat.com>,
       linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
       linux-mm@kvack.org, Ingo Molnar <mingo@redhat.com>,
       pageexec@freemail.hu
Subject: Re: [patch 0/5] Support for sanitization flag in low-level page
 allocator
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> > performance point of view: we _dont_ want to clear the full stack 
> > page for every kernel thread exiting.
> 
> Burning the stack there is beyond overkill.

Yet most of our historic leaks have been padding bytes in stack based
structures. Your position seems very inconsistent.