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Date: Fri, 24 Jun 2016 10:51:35 -0700
From: Linus Torvalds <>
To: Brian Gerst <>
Cc: Peter Zijlstra <>, Oleg Nesterov <>, 
	Andy Lutomirski <>, Andy Lutomirski <>, 
	"the arch/x86 maintainers" <>, Linux Kernel Mailing List <>, 
	"" <>, Borislav Petkov <>, 
	Nadav Amit <>, Kees Cook <>, 
	"" <>, Josh Poimboeuf <>, 
	Jann Horn <>, Heiko Carstens <>
Subject: Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core)

On Fri, Jun 24, 2016 at 10:40 AM, Linus Torvalds
<> wrote:
> I think I have a few new places to look at..

Yeah, making the 'stack' pointer be 'unsigned long *' rather than
'void *' shows a number of places where we were very confused about

And in particular, the init_task stack initialization initialized it
to the init_thread pointer. Which was definitely deadly.

Let's see if that was it..


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