Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp8090406ybl; Thu, 16 Jan 2020 10:26:32 -0800 (PST) X-Google-Smtp-Source: APXvYqzJntkRcHtXNvQvaIfZBMuEdW6SOR5dD6xaOthSLRtQ76GCSH29La3KPs2z9MwV2y1zmJWO X-Received: by 2002:a9d:32f:: with SMTP id 44mr3008976otv.234.1579199192667; Thu, 16 Jan 2020 10:26:32 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1579199192; cv=none; d=google.com; s=arc-20160816; b=fmL8VV/VCqn0xyKg+HUatgUQINTmFxojog9g/3V1QTUP1JANLKoL6VFg93LPQKm+5u L53k/vD10+HEYoPLR2fHC7xh37s1/VK3aTWoSWGc2mD4SLlhH/y9a/gScBAU9rWIyO/R 2B+/11K+6rkQV0ZXCG/WovCSzSv/BFZQBYU8QFhoP/lrG6g5apNicGelB1XWnlcWaqCu f8exLvSH55m2FB3XfnlXWoqWAaGbUcumBWIbEvtpOkK7l6XsooJfqGZEprzq+bev0Xg/ rqUHW9szjJ4ULPSFEYn/jQ0hrusNaG6paSKGKiBp1V/5nf/RvGhO/xmaeQWLRxyw6XdJ 7ViQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=2V+6jCnbeDF/SIN2Lte2+lVVU6WxWg8VyOL9HwTHBm8=; b=jRE15VMRQ66zp/NPBIqkzi1MR8e87J2yixu2pA9C7rUIXvHF9NqPrfbLCxbnDfJE4e TcDet3NtA/aZvRauCaQJpzy89MPdT+E4m2YGqx6di+U/mahpUPNBYim7TMX4Lvp3gGos RDjr4eu6xBgR1wR/bdcZPdREhp361DixtSPgwnOjarumf0icqgsQUZeh2YojFMd+Y9VT 6ICooigQvT2RqeN1pUZRGu2Kxf4zVKyJHCyXO1WU2ydbdWfps5OAv+xKE8AlC0wtZZps oTGDyya9esiP0E0SYzN7iUjtFVDr02rNwEBr3MMBfbw5+ittFPIOTlwtZEObMCQ4lEnx 2hIw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=0CKqRrAn; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u191si11428409oia.86.2020.01.16.10.26.20; Thu, 16 Jan 2020 10:26:32 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=0CKqRrAn; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407050AbgAPSY6 (ORCPT + 99 others); Thu, 16 Jan 2020 13:24:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:48220 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392408AbgAPSY4 (ORCPT ); Thu, 16 Jan 2020 13:24:56 -0500 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7F20320684; Thu, 16 Jan 2020 18:24:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579199096; bh=Uvn4io9HRoCWehKj5QlRdjNGEEGcA1mRcdpz3dLBqGs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=0CKqRrAnK+geRIGoLgKnBDxnHagxynAqskFtIRJ9DfMZWKYtbc1dCbzt1+SfM2sjc hnVnjWETX8zzmlDO2rucuD7erQEPcfSJVahwFRoGLWRtDIXk5QdfPs8irawGcLG9X7 3jkFCB+/ojXqzQSHWy0dF/yM2x/Ww6byyiuTepeA= Date: Thu, 16 Jan 2020 18:24:50 +0000 From: Will Deacon To: Sami Tolvanen Cc: Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , Dave Martin , Kees Cook , Laura Abbott , Marc Zyngier , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 00/15] add support for Clang's Shadow Call Stack Message-ID: <20200116182449.GD22420@willie-the-truck> References: <20191018161033.261971-1-samitolvanen@google.com> <20191206221351.38241-1-samitolvanen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191206221351.38241-1-samitolvanen@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 06, 2019 at 02:13:36PM -0800, Sami Tolvanen wrote: > This patch series adds support for Clang's Shadow Call Stack > (SCS) mitigation, which uses a separately allocated shadow stack > to protect against return address overwrites. More information > can be found here: > > https://clang.llvm.org/docs/ShadowCallStack.html I've queued the first four via arm64. Will