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Message-ID: <20171209114819.yuncnn4ccsgvffcg@mwanda> Date: Sat, 9 Dec 2017 14:48:19 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Joe Perches <joe@...ches.com> Cc: "Tobin C. Harding" <me@...in.cc>, Dan Carpenter <error27@...il.com>, Laura Abbott <labbott@...hat.com>, 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 Fri, Dec 08, 2017 at 06:18:45PM -0800, Joe Perches wrote: > 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. Yeah. Smatch has a check for this. Rasmus Villemoes wrote it. regards, dan carpenter
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