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=-11.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 2B5B8C433E0 for ; Fri, 12 Mar 2021 02:47:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0AC164F90 for ; Fri, 12 Mar 2021 02:47:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231651AbhCLCqh (ORCPT ); Thu, 11 Mar 2021 21:46:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231627AbhCLCqW (ORCPT ); Thu, 11 Mar 2021 21:46:22 -0500 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D399C061762 for ; Thu, 11 Mar 2021 18:46:22 -0800 (PST) Received: by mail-pj1-x102b.google.com with SMTP id q6-20020a17090a4306b02900c42a012202so10343467pjg.5 for ; Thu, 11 Mar 2021 18:46:22 -0800 (PST) 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=3x8wPNWDF/9lMYXSZwL36CZQWnEVZfdICW0j1WUI2Xc=; b=Cl5fNZZq/SgrZczxCy+a2QRKYJuXT+6kXJ+VmO2lDHQ7ubzS7ZwXipGTDBJ4dO8rK/ IeOOI9GOEttF1QSmu0XAOk0Gloj2MZ0Ib6Qz9r+zuLKSHXUz3Xu43XFBqEkBvEB1loN3 RRkip/PZ0afw6skqKgq8ZCRwgY8XWK2/a3rkw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=3x8wPNWDF/9lMYXSZwL36CZQWnEVZfdICW0j1WUI2Xc=; b=SoI0pHIEdQsBv0s8Y+rXOrDrJmFluai3b0BanU7Dl2D+hszMInvxHp7SxR8DlU567p Hs/aAvAUncg2z9fCEdVxeTDCj2/pEjLeiz6T3YOVTn5kMkmN/4YGWWyDOMCV8Doss8qN 7VInMx8f88zWErzrkJ+9d1URizvmzt2ajhDsK0chxlIqdrx5lItYJXbsHIzusoHVu4xn ipYrJEz0Gfikvl4jUKxLnk8PreNPavxBpz5U9Nv/l7UKYz0LtklrazZwwHh1Y0NItSct LtB+E/6RcBNyiJipPMQKzyTs5NSS2g3iTKqa8hedXjlKqcoEk28kLT71DVoS5s2PBuXv mQsg== X-Gm-Message-State: AOAM533nJSdMBAkNG5Tl1JoME/LCTTpOTfxaa/yvU7snzpODTxdNCSzk C7SLwnk8I9sEEbfjJrTraNBuSw6zM/fZeg== X-Google-Smtp-Source: ABdhPJwfiqpEB0ZCSX1blMYrqv2l+v2mx712W/a/L5gcEq6rFAAUBWmeBThCqeCPc6yu/0eVJaAdiQ== X-Received: by 2002:a17:902:e8c4:b029:e2:b7d3:4fd7 with SMTP id v4-20020a170902e8c4b02900e2b7d34fd7mr10797062plg.73.1615517182025; Thu, 11 Mar 2021 18:46:22 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id ms21sm409762pjb.5.2021.03.11.18.46.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Mar 2021 18:46:21 -0800 (PST) Date: Thu, 11 Mar 2021 18:46:20 -0800 From: Kees Cook To: Sami Tolvanen Cc: Nathan Chancellor , Nick Desaulniers , Masahiro Yamada , Will Deacon , Jessica Yu , Arnd Bergmann , Tejun Heo , bpf@vger.kernel.org, linux-hardening@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 12/17] arm64: implement __va_function Message-ID: <202103111846.A6B653A434@keescook> References: <20210312004919.669614-1-samitolvanen@google.com> <20210312004919.669614-13-samitolvanen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210312004919.669614-13-samitolvanen@google.com> Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Thu, Mar 11, 2021 at 04:49:14PM -0800, Sami Tolvanen wrote: > With CONFIG_CFI_CLANG, the compiler replaces function addresses in > instrumented C code with jump table addresses. This change implements > the __va_function() macro, which returns the actual function address > instead. > > Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook -- Kees Cook