From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBAB8C43603 for ; Thu, 19 Dec 2019 13:35:56 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 4A0BB206D8 for ; Thu, 19 Dec 2019 13:35:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="VMU3axBi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4A0BB206D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17510-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 30176 invoked by uid 550); 19 Dec 2019 13:35:47 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 30156 invoked from network); 19 Dec 2019 13:35:47 -0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=YSWZcOq3c4tDpa7LmbcYDgqZaDKNh9WKgBSxITrGWH0=; b=VMU3axBiD4FRvBTUAvat9++sh QduzMQrNMhpyhtVc5RAWKPuxaPWfFYkdKhazG/Ft7Rb2DcgDwcNM6GB1Y+LXthA2qM1qd2DA1S3Go pBDLF+l0FeQ8QKOt6JpebPmTPqCHKQVdfGynuJOJRihcWND6FmluJqXwRRlAxAJXBJtDpV7B3vIIQ HyjLGsUezYfLMMJT6ecEqBRXmLtrO3r6tw9kZGnggFfNCAPXD0vvnCbm/e2tWk2lwkSdLuHxAXKNC MzM0SeXj8f6KIEsepVLCK4CRpfDa490tRRci4kujDYCTdi9wAoiKDa4FtyDHyFb1Au2y4UcUyqPt5 itF3fF1fw==; Date: Thu, 19 Dec 2019 14:34:52 +0100 From: Peter Zijlstra To: Thomas Garnier Cc: kernel-hardening@lists.openwall.com, kristen@linux.intel.com, keescook@chromium.org, Herbert Xu , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , x86@kernel.org, Andy Lutomirski , Juergen Gross , Thomas Hellstrom , "VMware, Inc." , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Rasmus Villemoes , Will Deacon , Masami Hiramatsu , Jiri Slaby , Boris Ostrovsky , Greg Kroah-Hartman , Alexios Zavras , Allison Randal , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-pm@vger.kernel.org Subject: Re: [PATCH v10 00/11] x86: PIE support to extend KASLR randomization Message-ID: <20191219133452.GM2827@hirez.programming.kicks-ass.net> References: <20191205000957.112719-1-thgarnie@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191205000957.112719-1-thgarnie@chromium.org> User-Agent: Mutt/1.10.1 (2018-07-13) On Wed, Dec 04, 2019 at 04:09:37PM -0800, Thomas Garnier wrote: > Minor changes based on feedback and rebase from v9. > > Splitting the previous serie in two. This part contains assembly code > changes required for PIE but without any direct dependencies with the > rest of the patchset. ISTR suggestion you add an objtool pass that verifies there are no absolute text references left. Otherwise we'll forever be chasing that last one..