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=-12.1 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 29CB9C433E7 for ; Tue, 1 Sep 2020 23:54:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 02E6320707 for ; Tue, 1 Sep 2020 23:54:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="uz93oa+c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726380AbgIAXyZ (ORCPT ); Tue, 1 Sep 2020 19:54:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726174AbgIAXyV (ORCPT ); Tue, 1 Sep 2020 19:54:21 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 830FEC061246 for ; Tue, 1 Sep 2020 16:54:21 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id e33so1587940pgm.0 for ; Tue, 01 Sep 2020 16:54:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vr/GRpBoEYmMuCS63slKe/6FyD7UiqC7EOcVZHXrpYc=; b=uz93oa+cmzW9oTnATL428U6pMu17BMVfzmaMjK4fk6Pr50aa1EJBroz8GVphFXX1DC xakDt5YXF7xxpRdVUQJBBYUnHHokCsCzD409wTF48swCZaPGPBw8N/Eu1/iDvX+LwOHT /ZV87MKvTEGAyHhk5QguI3zXGk7KdqaDBxsVyNc8bquF02gR+FcCUuQtoqaAmY6eF1Ox YST9d4Rsw5ptQHBz/JbuP6UFlPBmOqzGa3RDnTuZedLKppgnemVaQeUSGg4TKX9/guQd sqjqZBf0mJY9HM1qcuiWhfcK+8/e7DJnSmsSSRZVq1yEjOyQ8y0mqq/E3jnqnuv8Tnfv itdA== 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=vr/GRpBoEYmMuCS63slKe/6FyD7UiqC7EOcVZHXrpYc=; b=BjQoMn0uwb228pG+7FyWdfw0N38D65uTE2/PLeahxtOEhVldZqKACu8d1T0sXKcmqx kHm+zKU8TNV8QqXNxo4O+K5+6u9SHNnLjNqsAiNwz+Mt/7h0Y0BdPSaJoI05abG29psH nFVqGdcpoRvjH0r7/1bouXNqVcpcZfLI2X0i9EbmAUho39jgIAKDO7+j7ULOQIrVz5fU OB+FaXJOmTepyUyzOW4zNs7yPiVz3i4jt2oXbwEqEg2EPXw2zUWS3HC53A1cO24FX7ya To2N7IoGtb6o0Tnjj7vef+XSlDFlh9eAlaUKWUE98+D31eBstn6OvTUMI9oR9+tSW4sm 3HMA== X-Gm-Message-State: AOAM531SbGg85qv7/CI5/VfaqhR2dsSty7O6v/JUN2WUOzFByxhV1yRX 5aAjTprmkVZVxas3EEM0c2GaiaL+/gTiJ1JjZH4cqw== X-Google-Smtp-Source: ABdhPJxTACSixKp/ZU9Zg50XGHk3ByA89yXDEzS29Y6IrN6+Y6W0mcsXbJ1k3kHy2PmcQKLZUI3aPxQZ5rHcknTWv7M= X-Received: by 2002:a62:19cd:: with SMTP id 196mr621969pfz.143.1599004460212; Tue, 01 Sep 2020 16:54:20 -0700 (PDT) MIME-Version: 1.0 References: <20200821194310.3089815-1-keescook@chromium.org> <202008311240.9F94A39@keescook> <20200901071133.GA3577996@gmail.com> <20200901075937.GA3602433@gmail.com> <20200901081647.GB3602433@gmail.com> <202009010816.80F4692@keescook> <202009011616.E6DC7D54EF@keescook> In-Reply-To: <202009011616.E6DC7D54EF@keescook> From: Nick Desaulniers Date: Tue, 1 Sep 2020 16:54:08 -0700 Message-ID: Subject: Re: [PATCH v6 00/29] Warn on orphan section placement To: Kees Cook Cc: Michael Ellerman , Masahiro Yamada , Nicholas Piggin , Ingo Molnar , Borislav Petkov , Catalin Marinas , Mark Rutland , Ard Biesheuvel , Peter Collingbourne , James Morse , Ingo Molnar , Russell King , Arvind Sankar , Nathan Chancellor , Arnd Bergmann , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , clang-built-linux , linux-arch , linux-efi , Linux ARM , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 1, 2020 at 4:18 PM Kees Cook wrote: > > On Tue, Sep 01, 2020 at 11:02:02AM -0700, Nick Desaulniers wrote: > > Uh oh, the ppc vdso uses cc-ldoption which was removed! (I think by > > me; let me send patches) How is that not an error? Yes, guilty, > > officer. > > commit 055efab3120b ("kbuild: drop support for cc-ldoption"). > > Did I not know how to use grep, or? No, it is > > commit f2af201002a8 ("powerpc/build: vdso linker warning for orphan sections") > > that is wrong. > > Eek, yeah, the vdso needs fixing; whoops. Lucky for my series, I only need > ld-option! ;) > I didn't cc everyone here on that thread, but here's the series I sent for it: https://lore.kernel.org/lkml/20200901222523.1941988-1-ndesaulniers@google.com/T/#u . -- Thanks, ~Nick Desaulniers