Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751420AbdLILtW (ORCPT ); Sat, 9 Dec 2017 06:49:22 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:51970 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751221AbdLILtT (ORCPT ); Sat, 9 Dec 2017 06:49:19 -0500 Date: Sat, 9 Dec 2017 14:48:19 +0300 From: Dan Carpenter To: Joe Perches Cc: "Tobin C. Harding" , Dan Carpenter , Laura Abbott , Kees Cook , Jonathan Corbet , Randy Dunlap , Andrew Murray , linux-doc@vger.kernel.org, LKML Subject: Re: [PATCH] doc: convert printk-formats.txt to rst Message-ID: <20171209114819.yuncnn4ccsgvffcg@mwanda> References: <1512524729-16051-1-git-send-email-me@tobin.cc> <20171207234402.GT2191@eros> <20171208004627.GW2191@eros> <1512768157.1845.30.camel@perches.com> <20171209012736.GC2191@eros> <1512785925.26342.4.camel@perches.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1512785925.26342.4.camel@perches.com> User-Agent: NeoMutt/20170609 (1.8.3) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8739 signatures=668644 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=709 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1712090168 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1009 Lines: 26 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 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