From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f52.google.com (mail-pj1-f52.google.com [209.85.216.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C75732F25 for ; Sat, 14 May 2022 21:58:32 +0000 (UTC) Received: by mail-pj1-f52.google.com with SMTP id l7-20020a17090aaa8700b001dd1a5b9965so10887025pjq.2 for ; Sat, 14 May 2022 14:58:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=JzfWF5xEUyLdKqhX0/BNfMvKzUJWiSaq1KcpW14iYMw=; b=WUlUbVRF6tirwuKwDy2NkFQO/d2QfrAUOspNRkHBFDb8zh5PYzqPFuh8T5V1C13dXL LFH13+Od0CwiqKj4zQII9grfBvdPGnYi6BlF50c5YX57xB7aI063mkiBbOk+Ls4I51VW Ea82sWo3QQSM5HKAsah/AH9GJKBYLeEbbBlqg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=JzfWF5xEUyLdKqhX0/BNfMvKzUJWiSaq1KcpW14iYMw=; b=od4LzZyfxOpg5NCdxe5J7ReauR3iig4eN2WyD8Ykm+3zldpo7gKgQnT/tcsEQHDYur DklMBzLhuaSglSLas+EBw/EXt6h99f5REvJvr/b0IxfXwCSEHw/oxa7/1nKSHPWpmDjG ZZJhgZGg9v1RSsumjwNOyRuq+W4/jt975fDaaFjGol/1XB3e9xUd1k0Qi8Cp2br2cNgR WMVqsvjG+cxatCBzmdDthbkjpGzHGp1u1doJhBPdnV5vHgFPE0usozmfZtoxp+IqXY1I 3b6G+iJu+qt6Vp1mg/WrhaNX275AMlVq9PphJzHe/YKIovjhVDwMHp2hBlJda+14iMQt iM9Q== X-Gm-Message-State: AOAM531mcwSC5RjzzB80XyAWbdbUFUKNh3FRD82SMTJpJF0KiOhNIMBz GJ9LXGfB89X2pDJMk6Bc/IXixg== X-Google-Smtp-Source: ABdhPJwpfw7TbvPXHehxghPWQ4Qsa1e3wKrxEzkB//8n2/gpnFICcaugpHJZByhUFKa3kZET1C0iOA== X-Received: by 2002:a17:90b:4b03:b0:1dc:6554:1bf9 with SMTP id lx3-20020a17090b4b0300b001dc65541bf9mr22748680pjb.246.1652565512306; Sat, 14 May 2022 14:58:32 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id b2-20020a170902650200b0015e8d4eb264sm4182146plk.174.2022.05.14.14.58.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 May 2022 14:58:32 -0700 (PDT) Date: Sat, 14 May 2022 14:58:31 -0700 From: Kees Cook To: Sami Tolvanen Cc: linux-kernel@vger.kernel.org, Josh Poimboeuf , Peter Zijlstra , x86@kernel.org, Catalin Marinas , Will Deacon , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Joao Moreira , Sedat Dilek , Steven Rostedt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Subject: Re: [RFC PATCH v2 19/21] x86/vdso: Disable CFI Message-ID: <202205141458.54A04805B5@keescook> References: <20220513202159.1550547-1-samitolvanen@google.com> <20220513202159.1550547-20-samitolvanen@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220513202159.1550547-20-samitolvanen@google.com> On Fri, May 13, 2022 at 01:21:57PM -0700, Sami Tolvanen wrote: > CC_FLAGS_LTO no longer includes CC_FLAGS_CFI, so filter these flags > out as well. > > Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook -- Kees Cook 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 39999C433EF for ; Sat, 14 May 2022 21:59:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=n4KU6fUpLOKyock6P5H+ocajLNNzyRZDrm6DRQzCCNY=; b=mDWvItH9qz4EJl I9PwMrT2ZibhAIkf9Lvp5r49BRboMNEf4ijYckBPXzTqQ34lhbQ09GxL/NtOO/bafdH0mVon1Wcrb B5MU4eu1Zn4C9rOFEPBdPK2x3qJfA9XbAgopLMHqlWeDPV0oKaZAK2kfwMWb54IRRAH4fZkHMMRM1 BHQAe/NJJcnKqcNbmESOoaIC52+7DkI5KP8qaSxHFwfxfX/yxhg0mW0fBcYSw2mKlm2CmHmmSa6Fn 13bHHsDw9R98qAPAKIaZEuGzDa9fVGuLO2sON4F4kd4RxfjeiKJax87QbLFr/sLP2CWiEFTyTUq1v HP2m3qzvekqtO8GDs6Rw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1npzmh-002Q6X-G6; Sat, 14 May 2022 21:58:47 +0000 Received: from mail-pl1-x634.google.com ([2607:f8b0:4864:20::634]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1npzmT-002Q0h-HF for linux-arm-kernel@lists.infradead.org; Sat, 14 May 2022 21:58:34 +0000 Received: by mail-pl1-x634.google.com with SMTP id c11so11086543plg.13 for ; Sat, 14 May 2022 14:58:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=JzfWF5xEUyLdKqhX0/BNfMvKzUJWiSaq1KcpW14iYMw=; b=WUlUbVRF6tirwuKwDy2NkFQO/d2QfrAUOspNRkHBFDb8zh5PYzqPFuh8T5V1C13dXL LFH13+Od0CwiqKj4zQII9grfBvdPGnYi6BlF50c5YX57xB7aI063mkiBbOk+Ls4I51VW Ea82sWo3QQSM5HKAsah/AH9GJKBYLeEbbBlqg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=JzfWF5xEUyLdKqhX0/BNfMvKzUJWiSaq1KcpW14iYMw=; b=FSppoZLPOX+5OLO48fP+hnP8JdeagfR4tR7lkGizPT4unVmN8GDVc4POLFkysfInnR xeXUYJkKx27nGMAbqvM1NVi1CzeGoPbGjoMDBXKuy0ExxkDgeqdXFDn9iIgqODHbQsjp BfWNMFF7zTkKk7Whx9Z4Qx10IjoiUBrawP27MfrIW5l0ADNlWlcfbFurw/YdftcB7EAw y7nfVnfdqQWUE0r+zcM6Hu4VjOLGfbayFPlx03DQkUWUQEFeo0HcsxhXd+Mdr04qXOIE ats02FTkWvn3mmDKLmoGHUd6n1MTbHOq86B/wCUTeqgyfCdWgAQ7Vziq0jshRIPPIHgD +Vog== X-Gm-Message-State: AOAM531HTbQL4u+WPv62QFDNE5/gPG51zjfj7rtEgCEMzZH5fSe/sYpx j/gsP+frF+clilC8sViPgPRyiQ== X-Google-Smtp-Source: ABdhPJwpfw7TbvPXHehxghPWQ4Qsa1e3wKrxEzkB//8n2/gpnFICcaugpHJZByhUFKa3kZET1C0iOA== X-Received: by 2002:a17:90b:4b03:b0:1dc:6554:1bf9 with SMTP id lx3-20020a17090b4b0300b001dc65541bf9mr22748680pjb.246.1652565512306; Sat, 14 May 2022 14:58:32 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id b2-20020a170902650200b0015e8d4eb264sm4182146plk.174.2022.05.14.14.58.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 May 2022 14:58:32 -0700 (PDT) Date: Sat, 14 May 2022 14:58:31 -0700 From: Kees Cook To: Sami Tolvanen Cc: linux-kernel@vger.kernel.org, Josh Poimboeuf , Peter Zijlstra , x86@kernel.org, Catalin Marinas , Will Deacon , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Joao Moreira , Sedat Dilek , Steven Rostedt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Subject: Re: [RFC PATCH v2 19/21] x86/vdso: Disable CFI Message-ID: <202205141458.54A04805B5@keescook> References: <20220513202159.1550547-1-samitolvanen@google.com> <20220513202159.1550547-20-samitolvanen@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220513202159.1550547-20-samitolvanen@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220514_145833_603864_52EDE58D X-CRM114-Status: UNSURE ( 9.52 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, May 13, 2022 at 01:21:57PM -0700, Sami Tolvanen wrote: > CC_FLAGS_LTO no longer includes CC_FLAGS_CFI, so filter these flags > out as well. > > Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel