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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4894BC77B72 for ; Thu, 20 Apr 2023 07:40:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234068AbjDTHk3 (ORCPT ); Thu, 20 Apr 2023 03:40:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234122AbjDTHk1 (ORCPT ); Thu, 20 Apr 2023 03:40:27 -0400 Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BBEE4202 for ; Thu, 20 Apr 2023 00:40:24 -0700 (PDT) Received: by mail-pf1-x42d.google.com with SMTP id d2e1a72fcca58-63d2ba63dddso630317b3a.2 for ; Thu, 20 Apr 2023 00:40:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681976423; x=1684568423; h=content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:from:cc:references:to:subject:from:to:cc:subject:date :message-id:reply-to; bh=yigQcCyYo5bfWaheVBkkNAwwz1QVaiyPfxi/HUGD75I=; b=JaDwXNBTGP2seH5fjo9MeEd/yLBaHxj55XpZe09YsHYBBpRYH48n7ItyukhaYmW+8Y 2rwiiFiD+ufL4rSEgt/ldZvRGL5wrG5/Cjg87LETBp+jEtpVcXesQ2wQFzWqRcJ3m5Lw IE/YmHnIJqWx6lkgRoTfG6P7gOun7qL7BERNqZnQen9V9l34XbNuyEV6rS+YjddyJBhc LIHkdjng4OS/54KMmVcrL14gx1y/VGBz88yvtXpyWH8XweQMJ2mHx1nVB20m8NN54gw9 scXrBvCltY6AI26Q6HaoL/xegngRByvRBM1KwuTKdJLdyUQxmtfuahYsoMk4oYcicn1r pUSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681976423; x=1684568423; h=content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:from:cc:references:to:subject:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=yigQcCyYo5bfWaheVBkkNAwwz1QVaiyPfxi/HUGD75I=; b=DzFdiyY7lqMa48+PaK/JFplHzisUK02VcGDw5ecocA4LqlPENnUO5HOj2c/r0jYIxE AgYvAsw8EVx3wlbbjkppfwdOIH+jW3TNoVDjBsTV/DSP5IYHNmowLDISjWZ/oUoXEXot IgFm7FUQyJCSCOsNKINvzWBq8qI8t4Qo6E1ncajOqzPMFAQUxyyzgXm0cebfPW7m1R8R GW7Sk/4gt2px7m+l/6edG+Z9uE3Xo730+TuIZTWnq6T0Sd9y9nH8WU81KwMk28c1L6Gz v6izEPBZ8Grwgc0l4vulqVe5pOO30Z2Ibfw1wA5NJ9Ax7J02H1RZwo2IaEGQJcw/eYk6 IkkA== X-Gm-Message-State: AAQBX9fvRxMpmZqGaup8Hh3hzeL2BVGKhVWOE3aBirEgRpwjZUm5ojtD jlFhrXmcLOggamFlYyptSe/pyQ1kC0s= X-Google-Smtp-Source: AKy350ZaprsGW0XpGSaox0KC5mpq1Ceao9XzAAN6iDA1Ll2qu37tcD1N1XAqZNcxMmnc0AbGBFghzw== X-Received: by 2002:a05:6a21:33a7:b0:f2:1577:2ea0 with SMTP id yy39-20020a056a2133a700b000f215772ea0mr11269pzb.44.1681976423577; Thu, 20 Apr 2023 00:40:23 -0700 (PDT) Received: from [10.1.1.24] (222-152-172-8-fibre.sparkbb.co.nz. [222.152.172.8]) by smtp.gmail.com with ESMTPSA id o20-20020a056a0015d400b0063b6bd2216dsm594263pfu.187.2023.04.20.00.40.20 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Apr 2023 00:40:23 -0700 (PDT) Subject: Re: reliable reproducer, was Re: core dump analysis To: Finn Thain References: <4a9c1d0d-07aa-792e-921f-237d5a30fc44.ref@yahoo.com> <1725f7c1-2084-a404-653d-9e9f8bbe961c@linux-m68k.org> <19d1f2ac-67dd-5415-b64a-1e1b4451f01e@linux-m68k.org> <87zg7rap45.fsf@igel.home> <5a5588ca-81c3-3f4c-fd43-c95e90b27939@linux-m68k.org> <67f6bc5f-e1fc-64b9-cb3c-1698cf4daf51@gmail.com> <9eea635f-c947-eae7-09fa-d39f00d91532@linux-m68k.org> <3dfea52a-b09e-517a-c3ca-4b559a3d9ce4@gmail.com> <23ddfd2a-1123-45ae-866d-158d45e23ba2@linux-m68k.org> <2f241963-44cd-3196-b39e-9c2d63cda1d3@linux-m68k.org> <60109ace-4e55-29da-86d9-35e931b11134@gmail.com> <54597ab3-2776-2a55-9952-3bfbbc329829@linux-m68k.org> Cc: debian-68k@lists.debian.org, linux-m68k@lists.linux-m68k.org From: Michael Schmitz Message-ID: <576b7614-00e2-7ad2-6769-c2d231d4729b@gmail.com> Date: Thu, 20 Apr 2023 19:40:18 +1200 User-Agent: Mozilla/5.0 (X11; Linux ppc; rv:45.0) Gecko/20100101 Icedove/45.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org Hi Finn, Am 20.04.2023 um 18:04 schrieb Finn Thain: > On Wed, 19 Apr 2023, I wrote: > >> Oddly, the program never detects any stack corruption when run on the >> QEMU '040. >> > > I tested a Motorola '040 and got the same result. OK, that would mean the bus error was just the most reliable way to get do_signal_return run after child process termination, and the signal delivery itself may be responsible for stack corruption. Cheers, Michael