Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754820AbbGQS4m (ORCPT ); Fri, 17 Jul 2015 14:56:42 -0400 Received: from mail-lb0-f169.google.com ([209.85.217.169]:34245 "EHLO mail-lb0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753357AbbGQS4k (ORCPT ); Fri, 17 Jul 2015 14:56:40 -0400 MIME-Version: 1.0 In-Reply-To: References: <20150715101627.GA21770@gmail.com> From: Andy Lutomirski Date: Fri, 17 Jul 2015 11:56:19 -0700 Message-ID: Subject: Re: [RFC PATCH 00/21] x86: Proposed fixes for stackvalidate warnings To: Josh Poimboeuf Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Michal Marek , Peter Zijlstra , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Andi Kleen , Pedro Alves , X86 ML , live-patching@vger.kernel.org, "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 977 Lines: 23 On Fri, Jul 17, 2015 at 9:47 AM, Josh Poimboeuf wrote: > These patches fix many of the warnings reported by stackvalidate. > They're based on top of the "Compile-time stack validation" v7 patch set > [1]. > > They've been compile-tested and boot tested in a VM, but I haven't > attempted any meaningful testing for most of them. This should give an > idea of what kinds of changes I think are needed. > > [1] https://lkml.kernel.org/r/cover.1436893563.git.jpoimboe@redhat.com > Nothing here looks all that bad, but I think the extra frame pointers staring us in the face (as opposed to the ones that gcc adds transparently) might serve as added incentive to suck it up and get CFI unwinding working. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/