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Date: Tue, 12 Apr 2016 11:27:52 -0700
From: Kees Cook <>
To: David Brown <>, Emese Revfy <>, 
	Masahiro Yamada <>, Michal Marek <>
Cc: linux-kbuild <>, PaX Team <>, 
	Brad Spengler <>, 
	"" <>, 
	Rasmus Villemoes <>, Fengguang Wu <>, 
	Dmitry Vyukov <>, LKML <>
Subject: Re: [PATCH v6 0/6] Introduce GCC plugin infrastructure

On Tue, Apr 12, 2016 at 10:46 AM, David Brown <> wrote:
> On Thu, Apr 07, 2016 at 11:10:23PM +0200, Emese Revfy wrote:
>> This patch set introduce the GCC plugin infrastructure with examples for
>> testing
>> and documentation.
>> GCC plugins are loadable modules that provide extra features to the
>> compiler.
>> They are useful for runtime instrumentation and static analysis.
>> The infrastructure supports all gcc versions from 4.5 to 6.0, building
>> out-of-tree modules and building in a separate directory.
>> Cross-compilation
>> is supported too but currently only the x86, arm and arm64 architectures
>> enables plugins.
>> This infrastructure was ported from grsecurity/PaX. It is a CII project
>> supported by the Linux Foundation.
>> Emese Revfy (6):
>> Shared library support
>> GCC plugin infrastructure
>> The GCC plugin infrastructure supports the arm and arm64 architectures too
>> Add Cyclomatic complexity plugin
>> Documentations of the GCC plugin infrastructre
>> Add sancov plugin
> I've tested the v6 patches on arm, and partially on arm64.  The arm64
> gcc has a bug in make install that doesn't install all necessary
> headers to build plugins.  I believe the patch will work once that
> version gets out.  It does, however, print a helpful message now
> explaining the likely cause of the failure.
> Tested-by: David Brown <>

Awesome! Thanks for testing this. I still need to finish getting my
arm64 environment built...

Do you happen to know if there's already a gcc bug open for the make
install problem?

Masahiro and Michal, does this series look good to you? I'd really
like to get this into -next for wider testing.

Emese, were you thinking of doing the initify plugin next after this
infrastructure lands?


Kees Cook
Chrome OS & Brillo Security

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