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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 559CAC432BE for ; Tue, 31 Aug 2021 10:13:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FAF160ED4 for ; Tue, 31 Aug 2021 10:13:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241186AbhHaKOl (ORCPT ); Tue, 31 Aug 2021 06:14:41 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:21882 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241145AbhHaKOg (ORCPT ); Tue, 31 Aug 2021 06:14:36 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 17VA76SD152223; Tue, 31 Aug 2021 06:13:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=date : from : to : cc : subject : message-id : references : content-type : in-reply-to : mime-version; s=pp1; bh=FQz/KL/YGeAhHXRrjkckE3vzqICbAzZQNvvHjUNWRXU=; b=XTr+A4Big/MUNZa+2JMBVjD7z350iW0nuTnYaRKSAu4+YXltceFOrDOfwx0bxxsbNY5w lkZ05c1UF2wtH2vrxE5gvGdzNzo0lhDAnABE3+jnjvQ8kk/8JIC4k/9/4g9EYiCDfVpf Xm+EqD5yFjUi6llNCrXff4/jqfPE/J2t0So6u9tGevBXhjDcHVWofN/W5X0gAc4xHAo8 a889ERPoIe1PK7IZIz93jUgKruvihIW90BSKP+fwenkUM7EL/vOXQkqZpnm71LnXVqLZ zl8roeD31yrQQjvb5OlMyFJBh6Pg/jYFUrliO9l8Cx+kjFaTN+Ouxey5fpy9WrH/GBtd iQ== Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 3asjbw08k3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 31 Aug 2021 06:13:23 -0400 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 17VA2wic017063; Tue, 31 Aug 2021 10:13:21 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma05fra.de.ibm.com with ESMTP id 3aqcs8pyht-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 31 Aug 2021 10:13:20 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 17VADFR342598660 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 31 Aug 2021 10:13:15 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ACD8BA405B; Tue, 31 Aug 2021 10:13:15 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 52CCAA4062; Tue, 31 Aug 2021 10:13:15 +0000 (GMT) Received: from osiris (unknown [9.145.60.147]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 31 Aug 2021 10:13:15 +0000 (GMT) Date: Tue, 31 Aug 2021 12:13:13 +0200 From: Heiko Carstens To: Christian Borntraeger Cc: Nathan Chancellor , Linus Torvalds , Vasily Gorbik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, qemu-s390x Subject: Re: [GIT PULL] s390 updates for 5.15 merge window Message-ID: References: <82161448-2770-158c-fdd3-d253b4ae476f@de.ibm.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <82161448-2770-158c-fdd3-d253b4ae476f@de.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 1_-cpaVSn1WqCzPphNX0SLhtSiTm7s8S X-Proofpoint-GUID: 1_-cpaVSn1WqCzPphNX0SLhtSiTm7s8S X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-08-31_04:2021-08-30,2021-08-31 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=999 priorityscore=1501 phishscore=0 spamscore=0 impostorscore=0 malwarescore=0 clxscore=1011 adultscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108310058 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 31, 2021 at 09:09:10AM +0200, Christian Borntraeger wrote: > > > On 31.08.21 04:19, Nathan Chancellor wrote: > > Hi Heiko, > > > > On Mon, Aug 30, 2021 at 03:11:50PM +0200, Heiko Carstens wrote: > > > - Enable KCSAN for s390. This comes with a small common code change to fix a > > > compile warning. Acked by Marco Elver: > > > https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com/ > > > > This caught my eye, as we are boot testing KCSAN + KCSAN_KUNIT_TEST in > > our CI [1] for x86_64 so it would be nice to enable this for s390 as > > well. However, it does not seem like the unit tests pass when booting up > > in QEMU, is this expected or am I doing something wrong? The results and > > compiler versions are below (the results are the same), they should both > > have the commits that are mentioned in the KCSAN message. > > Do you have a branch somewhere where you have the s390 build rules as well as > the qemu command line? Maybe its a QEMU TCG issue, dont know. CC qemu-s390x > just in case. I really don't think this is QEMU related. The test fails are sort of expected: we've seen KCSAN reports when the kernel boots and wanted to fix them later. However I have to admit that I wasn't aware of the KCSAN KUNIT tests, and wouldn't have sent the s390 KCSAN enablement upstream if I would have been aware of failing self tests. We'll fix them, and I let you know if things are supposed to work. Thanks a lot for making aware of this!