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=-11.5 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=ham 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 6539CC4338F for ; Wed, 28 Jul 2021 01:03:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4CFBB60F02 for ; Wed, 28 Jul 2021 01:03:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234710AbhG1BDh (ORCPT ); Tue, 27 Jul 2021 21:03:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234298AbhG1BDf (ORCPT ); Tue, 27 Jul 2021 21:03:35 -0400 Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72079C061764 for ; Tue, 27 Jul 2021 18:03:34 -0700 (PDT) Received: by mail-qt1-x82e.google.com with SMTP id t18so216504qta.8 for ; Tue, 27 Jul 2021 18:03:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=tHkMpHvH3OmsqOMUdncm8WfCJjiepxrM9xh1uNsnoH8=; b=gT4xuHkr5MCPjWqoOicvmIgKWAFzk6Zl8DM9BjZr5zfB+IShtGBrWlVXFHbmKd00FU H8GMna/QWhjbaaH0zb2epGH5KQuajqiG8jcxnM0e8Fq1QBl8HnQ4CnjsHWosF0HOY+QK 0KAx5Y+O29pxdXnzBHts+UetgzFjHw2Du3AQ0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=tHkMpHvH3OmsqOMUdncm8WfCJjiepxrM9xh1uNsnoH8=; b=ZM0QtuBjoY6TsNqOtpB7PY6lyRsQBfRluRKAv9WcVyVg09RGZnSEpxSv5Pz7UbaDUr ZI61rwFTNP5FNvUKNPOckBo63PWhbkQ4hiHga1X8YAuMl0vOqP92vH269MbL52eO6caX CZco2hbjwoLxzKdU0Zb0UEl5/CvltsIo/cSpt+dSbLsO07knvwv/Kd67Y3a0UNK9JVmh ueheUKfgZ5GgqrpUIPkaQdJQ1WCNhGP5+cAPJcNfuQ6haKo6G3LK4M7N4a3Bgsjs2fPg s6SAYDn/+wwtocmquVkxrFO2I9q0C0WqsZoDn5hssNRGsmmWBaRMX4/eRozdOOlIw6wU 3wCA== X-Gm-Message-State: AOAM532uTbgkAhJdsNCIu8b7TCclSzx4gSbnHCyUBjqz/I4h22XmHbhx 7Rc4rBpu25VCBkrPGomvyILwIs4vzL2c1EDyMebGvg== X-Google-Smtp-Source: ABdhPJxjmlE5yVh8YlGpJ0U/rLjeeeLuwtccal5EeveFlAkx6Qo+3rxtJO7aKcAii92XQv8UT6eEzvGpQiQfkHuEt+A= X-Received: by 2002:ac8:7515:: with SMTP id u21mr3011194qtq.80.1627434213425; Tue, 27 Jul 2021 18:03:33 -0700 (PDT) MIME-Version: 1.0 References: <20210727205855.411487-1-keescook@chromium.org> <20210727205855.411487-7-keescook@chromium.org> In-Reply-To: <20210727205855.411487-7-keescook@chromium.org> From: Michael Chan Date: Tue, 27 Jul 2021 18:03:22 -0700 Message-ID: Subject: Re: [PATCH 06/64] bnxt_en: Use struct_group_attr() for memcpy() region To: Kees Cook Cc: linux-hardening@vger.kernel.org, "Gustavo A. R. Silva" , Keith Packard , Greg Kroah-Hartman , Andrew Morton , open list , linux-wireless@vger.kernel.org, Netdev , dri-devel@lists.freedesktop.org, linux-staging@lists.linux.dev, linux-block@vger.kernel.org, linux-kbuild@vger.kernel.org, clang-built-linux@googlegroups.com Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000036049a05c8248ec8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --00000000000036049a05c8248ec8 Content-Type: text/plain; charset="UTF-8" On Tue, Jul 27, 2021 at 2:01 PM Kees Cook wrote: > > In preparation for FORTIFY_SOURCE performing compile-time and run-time > field bounds checking for memcpy(), memmove(), and memset(), avoid > intentionally writing across neighboring fields. > > Use struct_group() around members queue_id, min_bw, max_bw, tsa, pri_lvl, > and bw_weight so they can be referenced together. This will allow memcpy() > and sizeof() to more easily reason about sizes, improve readability, > and avoid future warnings about writing beyond the end of queue_id. > > "pahole" shows no size nor member offset changes to struct bnxt_cos2bw_cfg. > "objdump -d" shows no meaningful object code changes (i.e. only source > line number induced differences and optimizations). > > Signed-off-by: Kees Cook Thanks. 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<20210727205855.411487-1-keescook@chromium.org> <20210727205855.411487-7-keescook@chromium.org> In-Reply-To: <20210727205855.411487-7-keescook@chromium.org> From: Michael Chan Date: Tue, 27 Jul 2021 18:03:22 -0700 Message-ID: Subject: Re: [PATCH 06/64] bnxt_en: Use struct_group_attr() for memcpy() region To: Kees Cook Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000036034b05c8248ec3" X-Mailman-Approved-At: Wed, 28 Jul 2021 06:14:26 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kbuild@vger.kernel.org, Greg Kroah-Hartman , linux-staging@lists.linux.dev, linux-wireless@vger.kernel.org, open list , dri-devel@lists.freedesktop.org, "Gustavo A. R. Silva" , linux-block@vger.kernel.org, clang-built-linux@googlegroups.com, Keith Packard , linux-hardening@vger.kernel.org, Netdev , Andrew Morton Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" --00000000000036034b05c8248ec3 Content-Type: text/plain; charset="UTF-8" On Tue, Jul 27, 2021 at 2:01 PM Kees Cook wrote: > > In preparation for FORTIFY_SOURCE performing compile-time and run-time > field bounds checking for memcpy(), memmove(), and memset(), avoid > intentionally writing across neighboring fields. > > Use struct_group() around members queue_id, min_bw, max_bw, tsa, pri_lvl, > and bw_weight so they can be referenced together. This will allow memcpy() > and sizeof() to more easily reason about sizes, improve readability, > and avoid future warnings about writing beyond the end of queue_id. > > "pahole" shows no size nor member offset changes to struct bnxt_cos2bw_cfg. > "objdump -d" shows no meaningful object code changes (i.e. only source > line number induced differences and optimizations). > > Signed-off-by: Kees Cook Thanks. 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