From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from tundra.namei.org (tundra.namei.org [65.99.196.166]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4C6C5B6F14 for ; Fri, 13 May 2011 10:20:40 +1000 (EST) Date: Fri, 13 May 2011 10:18:52 +1000 (EST) From: James Morris To: Ingo Molnar Subject: Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering In-Reply-To: <20110512130104.GA2912@elte.hu> Message-ID: References: <1304017638.18763.205.camel@gandalf.stny.rr.com> <1305169376-2363-1-git-send-email-wad@chromium.org> <20110512074850.GA9937@elte.hu> <20110512130104.GA2912@elte.hu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: linux-mips@linux-mips.org, linux-sh@vger.kernel.org, Peter Zijlstra , Frederic Weisbecker , Heiko Carstens , Oleg Nesterov , David Howells , Paul Mackerras , Eric Paris , "H. Peter Anvin" , sparclinux@vger.kernel.org, Jiri Slaby , linux-s390@vger.kernel.org, Russell King , x86@kernel.org, Linus Torvalds , Ingo Molnar , linux-arm-kernel@lists.infradead.org, kees.cook@canonical.com, "Serge E. Hallyn" , Peter Zijlstra , microblaze-uclinux@itee.uq.edu.au, Steven Rostedt , Martin Schwidefsky , Thomas Gleixner , Roland McGrath , Michal Marek , Michal Simek , Will Drewry , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ralf Baechle , Paul Mundt , Tejun Heo , linux390@de.ibm.com, Andrew Morton , agl@chromium.org, "David S. Miller" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, 12 May 2011, Ingo Molnar wrote: > Funnily enough, back then you wrote this: > > " I'm concerned that we're seeing yet another security scheme being designed on > the fly, without a well-formed threat model, and without taking into account > lessons learned from the seemingly endless parade of similar, failed schemes. " > > so when and how did your opinion of this scheme turn from it being an "endless > parade of failed schemes" to it being a "well-defined and readily > understandable feature"? :-) When it was defined in a way which limited its purpose to reducing the attack surface of the sycall interface. - James -- James Morris