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=-6.8 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 B3684C433E2 for ; Tue, 15 Sep 2020 18:49:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 611E120735 for ; Tue, 15 Sep 2020 18:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600195763; bh=L650dJTKmZMa4G9eppqgs8z0TfqKlCAyT3NEVygVO34=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=OhbroDis9YLs/sm2GolM2gdnY2iA5r7gbl7LPGEHNnXS93ZIUrT2Z8Orq2Mb7DQEy /Lx7JU4t0sITErNUtBEYWYWO2MjwZNBLLG5MRPgtrpImAY7GBnN6lNeZQNACBiUEpN O2yoli7DabHTBcQdE5PWJh6cKkcV384DhFNmrwQ4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727902AbgIOStR (ORCPT ); Tue, 15 Sep 2020 14:49:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727889AbgIOR1G (ORCPT ); Tue, 15 Sep 2020 13:27:06 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D2B5C061220 for ; Tue, 15 Sep 2020 10:24:46 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id v23so3575128ljd.1 for ; Tue, 15 Sep 2020 10:24:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=TlLASjtOWZl97ccS56UuppG/O1DcME2TKl7d1jzvYzM=; b=ZQ4GHeUyUTLfgc95eXulgPvEP8C1iC3CepnrK9c7pfKYqS19IJUGCmeEpx5/qKZ02M zzlDzATp4hfO861tzoWuNixpFbmNPSR7fXNK9Pyas2eKtrBsZmkJKLUIKMnfkIZRLHXC WbAoAlOxBDEO1ElAIYEY4Jq81yKgIiBKzhNdo= 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=TlLASjtOWZl97ccS56UuppG/O1DcME2TKl7d1jzvYzM=; b=D3KYbiPupNn2UL3qZiMEH2iNc2+XNg5mjwJbKfqWG6fiN6lcyMqEt+mUPgbxzcsSKw 7JhyFF/kCJwdE7wB1miuYLzkszW+pVv6GKMR0sUxsK77t96IH4MOv/mFX8qTDteVS/Hq m99gOOpja0FbqyglOh0820ix/fytrm/rdCxY72abt0Ze66l+DGHY8+WJaPI05j3AgckX bd5An9kbC9eZRZB5bHuvguRRDED9ZN/DLccAbBLNuqAu2d3mnStkOrlqqREajE9D9inN z5t2MOHiC9Vc0Xz9SZOSDK3v+XgSs/towfiFsUGTMScuAetcwPMzUVLHLgWJcxI9OrF3 cPIg== X-Gm-Message-State: AOAM5308n5Iko8e6xtHX5CG9vAyUTmtNcjCDocEYOfXezuekbNR29WG0 xlbZIpP3U31OUuk8h9YX8+t1Ksw7fiRElw== X-Google-Smtp-Source: ABdhPJyIYUQ19QTt3UFVJuuKX4qkdEuX77xRM/S3CnhDJESC0LZCCktvUOiPb+EUWwLqMsEtC6NFtQ== X-Received: by 2002:a2e:8e30:: with SMTP id r16mr7783238ljk.304.1600190684056; Tue, 15 Sep 2020 10:24:44 -0700 (PDT) Received: from mail-lj1-f171.google.com (mail-lj1-f171.google.com. [209.85.208.171]) by smtp.gmail.com with ESMTPSA id b14sm4032580lfp.176.2020.09.15.10.24.42 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Sep 2020 10:24:43 -0700 (PDT) Received: by mail-lj1-f171.google.com with SMTP id b19so3503572lji.11 for ; Tue, 15 Sep 2020 10:24:42 -0700 (PDT) X-Received: by 2002:a2e:91cd:: with SMTP id u13mr6495156ljg.421.1600190682261; Tue, 15 Sep 2020 10:24:42 -0700 (PDT) MIME-Version: 1.0 References: <20200915140653.610388773@linuxfoundation.org> <20200915140658.820608455@linuxfoundation.org> In-Reply-To: <20200915140658.820608455@linuxfoundation.org> From: Linus Torvalds Date: Tue, 15 Sep 2020 10:24:25 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 5.8 108/177] gcov: Disable gcov build with GCC 10 To: Greg Kroah-Hartman Cc: Linux Kernel Mailing List , stable , Colin Ian King , Leon Romanovsky , Sasha Levin 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 15, 2020 at 7:28 AM Greg Kroah-Hartman wrote: > > GCOV built with GCC 10 doesn't initialize n_function variable. This > produces different kernel panics as was seen by Colin in Ubuntu and me > in FC 32. > > As a workaround, let's disable GCOV build for broken GCC 10 version. Oh, Peter Oberparleiter actually figured out what was wrong, and we have commit 40249c696207 ("gcov: add support for GCC 10.1") upstream that enables it again with the fix for the changed semantics in gcc-10. Linus