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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 D2BF1C433E0 for ; Wed, 13 May 2020 23:07:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8E4820675 for ; Wed, 13 May 2020 23:07:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589411258; bh=qG3filJkuccWEKdt5WwGw6sN1kljMt4A01AvGyw0zAg=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=DRvVmyTjaZcnQhtXDftj8vqjoH1b0rMnqE5NrTu0rSMOE3qhEzTX7u/8TsS25EMo/ 4aRaLM6SlozsBVETs3HNwWnZ3p7k+LZqObafSoXG0qzrJL9ovXD4RYI/nqa4t48mVl 2XvkXbMjh+xbq3jukBHJ18ksSoLK1BHIwOFgBx8I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732302AbgEMXHh (ORCPT ); Wed, 13 May 2020 19:07:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1731815AbgEMXHg (ORCPT ); Wed, 13 May 2020 19:07:36 -0400 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C7A5C061A0C for ; Wed, 13 May 2020 16:07:36 -0700 (PDT) Received: by mail-lj1-x242.google.com with SMTP id h4so1380881ljg.12 for ; Wed, 13 May 2020 16:07:36 -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=AISywjaIigbZvM5wrGKe3nZxsN8rSRNo6sOvjusdnS8=; b=Uzk3ZMzxMHYI0Jjw3+l5m9Q9Wo7N0ohxWcqxXfgobzt7uyR3kBGf/nWToM//QOLkxa WYGNDh2ssyoA5t3wvD4bKOJ3FzbPoejK85Gc3uR5fVVEuAv1goPPxlzMjuEIXhDAyrqa 4SjCmVPcKv981c1X/lwHnQcnV37ZB3+z74yYQ= 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=AISywjaIigbZvM5wrGKe3nZxsN8rSRNo6sOvjusdnS8=; b=dhSP/BPyiGW66VzkRRIaUBmMUdNhtI3HodhTUZB/Tx3zojHSDGZlCGa36c9+TxuxXZ ud3pdekTsfP44Km4H4yb3ModSw3EO7LzpxAu8QvEEOy3nIhXxZz9iaPpHCnITNpDE+UI VuCpuuMhRSd1PVWzKaCaLlqdsD8GB9sf/gXq49gUyUbT7TdkQP2yNZi/nGfY3WkHxZMf 0LY5gwFFWhKS+AvIM4jMp/SZwfGAIJn1GWZv/Xda/wptqpBvWcWkmtrAOzusVe/NqjNZ lVMRHA/Iq3Oyk7dLdyv+QvNfiNKfyJKrATyVVANUV8CP+ktAO9eifJM4gqtV99PTEixt lQ4A== X-Gm-Message-State: AOAM530ckVnrhnl86l7axneNt0Ghypg6ClKvtSX22m1auEm8lLDhvXFT xloCAFacqv6kjEnAHK0EyTq+kA8QOGs= X-Google-Smtp-Source: ABdhPJy1axCoHb1EQddIkBLp+7nKGivaVxzfdD+zFtiNrmw9KZ1tQSFrSvdgqlDqoeGXdj4B4k9euQ== X-Received: by 2002:a2e:8155:: with SMTP id t21mr784036ljg.5.1589411254683; Wed, 13 May 2020 16:07:34 -0700 (PDT) Received: from mail-lj1-f170.google.com (mail-lj1-f170.google.com. [209.85.208.170]) by smtp.gmail.com with ESMTPSA id d19sm569140lfj.8.2020.05.13.16.07.33 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 May 2020 16:07:34 -0700 (PDT) Received: by mail-lj1-f170.google.com with SMTP id w10so1469404ljo.0 for ; Wed, 13 May 2020 16:07:33 -0700 (PDT) X-Received: by 2002:a2e:814e:: with SMTP id t14mr824451ljg.204.1589411253419; Wed, 13 May 2020 16:07:33 -0700 (PDT) MIME-Version: 1.0 References: <20200509120707.188595-1-arnd@arndb.de> <20200509120707.188595-2-arnd@arndb.de> <87v9l24qz6.fsf@kamboji.qca.qualcomm.com> <87r1vq4qev.fsf@kamboji.qca.qualcomm.com> <87d078tjl0.fsf_-_@kamboji.qca.qualcomm.com> <20200513154847.GA158356@rani.riverdale.lan> <20200513214128.GB6733@zn.tnic> In-Reply-To: From: Linus Torvalds Date: Wed, 13 May 2020 16:07:17 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: gcc-10: kernel stack is corrupted and fails to boot To: Arnd Bergmann Cc: Borislav Petkov , Arvind Sankar , Kalle Valo , linux-wireless , "linux-kernel@vger.kernel.org" , "the arch/x86 maintainers" , Nick Desaulniers , Kees Cook , Thomas Gleixner 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 Wed, May 13, 2020 at 2:50 PM Arnd Bergmann wrote: > > Right, in particular since Linus started building with gcc-10 already and > would likely soon run into that problem if he hasn't already ;-) I don't happen to have stack canaries on the configs I actually boot, so I didn't notice. But yes, we should get this before 5.7 and mark it for stable, since F32 is now gcc-10, so people will start hitting it if they enable stack canaries. Linus