Received: by 2002:a05:6358:3188:b0:123:57c1:9b43 with SMTP id q8csp328349rwd; Wed, 14 Jun 2023 16:58:41 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ70Q1f1BJbV9jPwLJ4PFxfDX8p8W3gO2w+8a0QGnY07Y3kvRVHLHi7/w+P81gCo9gCf/A3b X-Received: by 2002:a05:6808:1790:b0:398:6495:5a9b with SMTP id bg16-20020a056808179000b0039864955a9bmr14252041oib.5.1686787120498; Wed, 14 Jun 2023 16:58:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686787120; cv=none; d=google.com; s=arc-20160816; b=ateP2CrWCWWiHbGQ3+V16WQnVmb5AJg6rKF0at4J7H15WBTUoFy5O9w1xh4x5F2Nim siDSuMuMrnt0vNnQq9kma1ULf/w8QL0vVRrk+7nLYqqDYGjZ8noq367+acAboUHRQHON G8uIhcZfdtQrhWSxFqL6X17eDEMlYbF1iHauiTM9yLiUzs6nNyuICkBJiBdZ5gsschXq 8IoLxUnlNgWL/U0Hml4ysHQpXfWZDIFHHmY1VKFNUWwFIr1fVrf3RbOw1qXVKoOYrFN1 rwaN5Zfsz7ma12TtIhQU/+eWJSMfEn0XrZ/xncyu1W4yHRpZX9mtNyXc/ChBh49g+Xv9 Qb9g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=vacjCPiU5N8qvuuprIt6J0bOdVwOCc4CraBBI0wBsjA=; b=Le/+uz653D8OXZwCil8StKWTZFYgCuY9kRonH2/XfP+GHX/kDJ9LEEttWyQdFF4rak WWdSIOjQdlVlS3owISDJIdHqE7+ROWLaE2xA04qzigEAt16/ft6WrS9DiOeiVbmunT2p zcGMk9CpVXpSizsLKrha16F7wBVIvA8wU6dezrnpOOOPPaYRwtk7eZ/3q8j6Xi5dGH3p 3d4QK0PGU+WOsFU/hbfiuDuJsNncQCAT3NFojzgirTjS1eGQpRWHhdEv98CZxVMNV2uk wVlzLA9vroem3/+MM2XjG14lgRnJpL/qvicLkZpEQBW/GCewZQ4hXFlz2KZ0RPeZ7Qop XlVQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=eCc3lU9Q; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 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 out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y20-20020a63b514000000b0054b4e9c2d7csi2661417pge.246.2023.06.14.16.58.28; Wed, 14 Jun 2023 16:58:40 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=eCc3lU9Q; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 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 S236787AbjFNXfS (ORCPT + 99 others); Wed, 14 Jun 2023 19:35:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237103AbjFNXfP (ORCPT ); Wed, 14 Jun 2023 19:35:15 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2C5F1BD4; Wed, 14 Jun 2023 16:35:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 841FF61274; Wed, 14 Jun 2023 23:35:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8900AC433C8; Wed, 14 Jun 2023 23:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686785712; bh=vacjCPiU5N8qvuuprIt6J0bOdVwOCc4CraBBI0wBsjA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eCc3lU9QvRreg8CWsym97621Y1HdoB5z0BuzFeiN07u9LL/m9q37r2V5D4RRnOW84 wjDU5qd+v0wR6BUZOEJO1LP6ZB3iJ2PGQTUCUrDtEUCo4kplur+s+ce1ytQwa0CYL0 3PsoGx+B4VeF2QCFMI33lfUN48CkkNS8MssSv/CGaV2YmN22V3495CK5i0X0cGe4jD OOAlXyMYeRPIWk6DwaTGG5NXmUPGRljP+ep0lFLLVAe6utCSVBno0fer/rzrxtPP5w 4PsPrpZNYwrAXe1AgFqm2GKUVkAmpWSY4VeYue4CyAkSRdtT5vZx77zeg9rvfEOBqf 505cofmZyOrhg== Date: Thu, 15 Jun 2023 00:35:01 +0100 From: Mark Brown To: Rick Edgecombe Cc: x86@kernel.org, "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , Weijiang Yang , "Kirill A . Shutemov" , John Allen , kcc@google.com, eranian@google.com, rppt@kernel.org, jamorris@linux.microsoft.com, dethoma@microsoft.com, akpm@linux-foundation.org, Andrew.Cooper3@citrix.com, christina.schimpe@intel.com, david@redhat.com, debug@rivosinc.com, szabolcs.nagy@arm.com, torvalds@linux-foundation.org, Pengfei Xu Subject: Re: [PATCH v9 17/42] mm: Warn on shadow stack memory in wrong vma Message-ID: <9583dff0-08aa-40e2-943f-f046f0402058@sirena.org.uk> References: <20230613001108.3040476-1-rick.p.edgecombe@intel.com> <20230613001108.3040476-18-rick.p.edgecombe@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="BSjLtFoBpX+dhkhM" Content-Disposition: inline In-Reply-To: <20230613001108.3040476-18-rick.p.edgecombe@intel.com> X-Cookie: You are false data. X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --BSjLtFoBpX+dhkhM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Jun 12, 2023 at 05:10:43PM -0700, Rick Edgecombe wrote: > The x86 Control-flow Enforcement Technology (CET) feature includes a new > type of memory called shadow stack. This shadow stack memory has some > unusual properties, which requires some core mm changes to function > properly. Reviewed-by: Mark Brown --BSjLtFoBpX+dhkhM Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmSKTqQACgkQJNaLcl1U h9DuIwf/UNc+nTY+UZmszCtFLLJzZY0v0k0woxLukAJtCYOMzWbzgUU3HMn/am0V y6ZoQODYns2OC5PQ1aHhORTs/srWbZDqABYUr4+Rg4tNPosfLoidutRExFLGvd1P tUU2Gkp+mCwzUbJN5KyUU0J1LSxWHzoJAqgomJGzhc2vSVtoF+KS2X9R5UdnfIE9 T8DSw5VeYuzKGVPMQVzRs4cVNIuj5/94wEEyGHXEO/dOos8ECuoPkzkfLmDTtb50 dylLaW7InFIA/HIXTPE1JwkFSomJePTZSlmngmAA91Andk6pvQ1PkKQayGqbqyXW kXqXqHJKtZE5tF1vFNHCKQJMNHQl6A== =Zsa+ -----END PGP SIGNATURE----- --BSjLtFoBpX+dhkhM--