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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 74D9DC432C3 for ; Tue, 3 Dec 2019 07:30:17 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3E2B920684 for ; Tue, 3 Dec 2019 07:30:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="M/ooX4Rj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3E2B920684 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49480 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ic2dT-0004FU-72 for qemu-devel@archiver.kernel.org; Tue, 03 Dec 2019 02:30:16 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:56018) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ic2bH-0003m0-VX for qemu-devel@nongnu.org; Tue, 03 Dec 2019 02:28:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ic2bF-0007CW-Tp for qemu-devel@nongnu.org; Tue, 03 Dec 2019 02:27:59 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:25346 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ic2bE-00079J-9L for qemu-devel@nongnu.org; Tue, 03 Dec 2019 02:27:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575358074; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HvT0AXc2SKpSSMRgNG1Jx297qYvigzCh8UTYlBvFNXs=; b=M/ooX4RjacljxSnhkVg70kq1KkFJ6sIoZY9wi3F5ZyN8QIbkzUBKb18UePYH7jx0sVqlmN npVVaL9VQCev6cQvZa8b+gksx6TcG+4l0GqOo87f+UGcbGXBWZ1ffCYaEE9RCtyiVq/q9O guD1Jb+eLDWCnsb5oNSmE0WRZsY8iYg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-28-AHGohzrWPXKxaTeTKZbIQA-1; Tue, 03 Dec 2019 02:27:51 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 34C051005510; Tue, 3 Dec 2019 07:27:50 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-134.ams2.redhat.com [10.36.116.134]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 76E205D6A7; Tue, 3 Dec 2019 07:27:47 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0965C1138606; Tue, 3 Dec 2019 08:27:46 +0100 (CET) From: Markus Armbruster To: David Hildenbrand Subject: Re: [PATCH 17/21] s390x: Fix latent query-cpu-model-FOO error handling bugs References: <20191130194240.10517-18-armbru@redhat.com> <9C97FEE6-D390-4CEB-9B00-50AE00AEA4D2@redhat.com> <87sgm3nww5.fsf@dusky.pond.sub.org> <631941d9-0e30-330b-e50e-4c9d99824e73@redhat.com> Date: Tue, 03 Dec 2019 08:27:46 +0100 In-Reply-To: <631941d9-0e30-330b-e50e-4c9d99824e73@redhat.com> (David Hildenbrand's message of "Mon, 2 Dec 2019 09:34:23 +0100") Message-ID: <87a78998ct.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: AHGohzrWPXKxaTeTKZbIQA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Cornelia Huck , David Hildenbrand , "vsementsov@virtuozzo.com" , Aleksandar Markovic , "qemu-devel@nongnu.org" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" David Hildenbrand writes: > [...] > >> First search hit. Here's my second one: >>=20 >> Q: What are latent bugs? >>=20 >> A: These bugs do not cause problems today. However, they are lurking >> just waiting to reveal themselves later. The Ariane 5 rocket >> failure was caused by a float->int conversion error that lay dormant >> when previous rockets were slower; but the faster Ariane 5 triggered >> the problem. The Millennium bug is another example of a latent bug >> that came to light when circumstances changed. Latent bugs are much >> harder to test using conventional testing techniques, and finding >> them requires someone with foresight to ask. >>=20 >> http://www.geekinterview.com/question_details/36689 > > Google search "latent software BUG" I think this argument has run its course. Let's agree to differ on the finer meaning and possible uses of "latent", and craft a mutually agreeable commit message instead. I'll reply to Cornelia's message. [...]