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=-5.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 52885C433E0 for ; Tue, 23 Feb 2021 18:18:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13BB664E24 for ; Tue, 23 Feb 2021 18:18:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233930AbhBWSSE (ORCPT ); Tue, 23 Feb 2021 13:18:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233927AbhBWSR5 (ORCPT ); Tue, 23 Feb 2021 13:17:57 -0500 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CA45C06178A for ; Tue, 23 Feb 2021 10:17:16 -0800 (PST) Received: by mail-pj1-x102c.google.com with SMTP id kr16so2380348pjb.2 for ; Tue, 23 Feb 2021 10:17:16 -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=Y+dGVUVowl982SXOXFEzMTklpUA2xojQW2q8oSyCS6I=; b=hLlvm2pVK0Tz7gEpiQShUAvdZF/IEHfPu0Kiyd+yuYnxHe+j3lKQ6Hce/7/XunIp3A q++MGoX5hbc/X8vmJr5bAihBTazw7Lk276BfU6lFRHFOumUJ/OlX1TtWXUN+VNN5tKBX MaSB9/1KfbC1h4lcYuyqBfJ/CdYELcxsbBmVI= 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=Y+dGVUVowl982SXOXFEzMTklpUA2xojQW2q8oSyCS6I=; b=jAoHhkeO5soCws/n3ztEipSpdzSpgRgbEv3kHLGLySZPWlEQgQJeOKTmKFWjLEs0Rg t88n6vvqWHUWZZekt/suf/YMs7hy6gjK2g/mrfP8szpeftJP8Yd8MCsrU0d0C6PPdvZx yAsZ6giKtsv4jQMq5zwP07NbHwXwwt+Uj1YlqKNX8ymMhZ8gk7H9mJEsDCyxk8XN/KOZ S1PGoQmStO623K8RmJXYWKqbeIu5iuMw0p78y0LOjYaAOUts2uZCP3sUjZZEEq98Gwfl h7ujKJm4d1oXve92RmummR9uNj5psQ3uZfyi4spXEEiBWKJgTtHNTRlNSm+bDeUyFnuo tMrw== X-Gm-Message-State: AOAM532+fR7lkipZjDqmoAnlBoWoTZlKMgQZQXQGjDHfy1x8QmQjoamn LfVeIyQEqBaEJS5fES3Lq9Wl+g== X-Google-Smtp-Source: ABdhPJz8B/KxyGd7uKaiNrrvu7+6j8zBuQCllq2oJBJ+c5r7iIP18af71apeteJfXqcChixTyEc6ig== X-Received: by 2002:a17:90a:4882:: with SMTP id b2mr63805pjh.78.1614104235871; Tue, 23 Feb 2021 10:17:15 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id v26sm22964666pff.195.2021.02.23.10.17.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Feb 2021 10:17:15 -0800 (PST) Date: Tue, 23 Feb 2021 10:17:14 -0800 From: Kees Cook To: Heiko Carstens Cc: Guenter Roeck , Masahiro Yamada , linux-hardening@vger.kernel.org, Linux Kernel Mailing List , Arnd Bergmann Subject: Re: [PATCH] gcc-plugins: Disable GCC_PLUGIN_CYC_COMPLEXITY for s390 Message-ID: <202102231016.F212B396@keescook> References: <20210221225650.33134-1-linux@roeck-us.net> <8d3de6fc-0991-9cef-d5fd-032fdbe2e85e@roeck-us.net> <20210223174140.GA159796@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org On Tue, Feb 23, 2021 at 07:03:47PM +0100, Heiko Carstens wrote: > Well, if we would have e.g. RANDCONFIG, then we could probably revert > 334ef6ed06fa ("init/Kconfig: make COMPILE_TEST depend on !S390") and > instead let COMPILE_TEST depend on !RANDCONFIG. > I think this _could_ solve all common problems we currently see. > > And it would also do what you suggested. I've wanted similar (e.g. for some UBSAN options that would go weird under RANDCONFIG). :) -- Kees Cook