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Date:   Fri, 08 Dec 2017 18:18:45 -0800
From:   Joe Perches <joe@...ches.com>
To:     "Tobin C. Harding" <me@...in.cc>,
        Dan Carpenter <error27@...il.com>,
        Laura Abbott <labbott@...hat.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Jonathan Corbet <corbet@....net>,
        Randy Dunlap <rdunlap@...radead.org>,
        Andrew Murray <amurray@...-data.co.uk>,
        linux-doc@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] doc: convert printk-formats.txt to rst

On Sat, 2017-12-09 at 12:27 +1100, Tobin C. Harding wrote:
> On Fri, Dec 08, 2017 at 01:22:37PM -0800, Joe Perches wrote:

> > Outside of the documentation, what could be useful is for
> > someone to add a tool to verify %p<foo> extension to
> > the typeof address actually passed as an argument.
> 
> This sounds interesting to work no. At first glance I have no idea how
> one would go about this. Some form of static analysis would be a good
> place to start, right? I'd like to allocate some cycles to this, any
> pointers most appreciated.

A gcc-plugin would likely work best.

There was some discussion about such a thing here:
http://www.openwall.com/lists/kernel-hardening/2017/02/14/38

I vaguely recall someone else doing a broader use tool
which I believe was not smatch, but my google-fu isn't
finding it.

It might have been coccinelle based.

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