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Date: Sat, 27 May 2017 13:03:23 -0700
From: Kees Cook <>
To: Christoph Hellwig <>
Cc: "" <>, Laura Abbott <>, 
	"" <>, LKML <>, 
	Bob Moore <>, Lv Zheng <>, 
	"Rafael J. Wysocki" <>
Subject: Re: [PATCH v2 11/20] randstruct: Disable randomization of ACPICA structs

On Sat, May 27, 2017 at 1:42 AM, Christoph Hellwig <> wrote:
> On Fri, May 26, 2017 at 01:17:15PM -0700, Kees Cook wrote:
>> Since the ACPICA source is maintained externally to the kernel, we can
>> neither switch it to designated initializers nor mark it
>> __no_randomize_layout. Until ACPICA-upstream changes[1] land to handle the
>> designated initialization, explicitly skip it in the plugin.
>> [1]
> I'd just overried the ACPIA bullshit process and just include these
> changes, as they are a major improvement independent of any
> reandomization.

Well... I'd rather not. It's been explicitly NAKed by them already,
which is why I sent the upstream solution (though it's being ignored

I don't want this to block randstruct any longer, so that's why I took
a whitelisting approach here.


Kees Cook
Pixel Security

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