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 5B141C6FD1C for ; Fri, 24 Mar 2023 03:18:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231241AbjCXDSR (ORCPT ); Thu, 23 Mar 2023 23:18:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229508AbjCXDSN (ORCPT ); Thu, 23 Mar 2023 23:18:13 -0400 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B389A55AD; Thu, 23 Mar 2023 20:18:11 -0700 (PDT) Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 32O1dvEn016924; Fri, 24 Mar 2023 03:17:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=pp1; bh=BNbeD3ySaTQDwCEDcLt5eGh9bouiy1EAvy296wcI/hQ=; b=JchxvEydFK8o3Hh414Y1ok7FUfexcwJnCqjA7RUohRBsM7wi8LvfL5mcHTcE7UNniAOE qYqd5CQIQO3TSON11VHf/RiIzznQUkmgoa26poZ5sREJCMpLHpA9+ZQy6ZIYCCBJ+YsJ PynNgIz8y7qcm4NrJoeOjf9bp0RoZ0V1zvZwg/lkqgW3zKbk+Pz71AjO5UNUYVolYDTJ ahhuzD2TKXxcp6DrHnGmhiP0OOhMikjx4bYJ0lmn2ZTPe4TI6mj/ECDLzrmRfUAieHCu SbYx8FT3yFdZnTNx3Jiut7L3oIZAPU+BD5miU12/n3vR+/FVqtPQgxG6UkPXPVb8i5Lh dA== Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3pgxtbx10a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 24 Mar 2023 03:17:54 +0000 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 32NLLPZ9025320; Fri, 24 Mar 2023 03:17:53 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma03ams.nl.ibm.com (PPS) with ESMTPS id 3pgxkrr96s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 24 Mar 2023 03:17:53 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 32O3Hoco29754022 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 24 Mar 2023 03:17:50 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 283CA20043; Fri, 24 Mar 2023 03:17:50 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 16A7920040; Fri, 24 Mar 2023 03:17:49 +0000 (GMT) Received: from smtpclient.apple (unknown [9.43.122.5]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 24 Mar 2023 03:17:48 +0000 (GMT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.400.51.1.1\)) Subject: Re: [next-20230322] Kernel WARN at kernel/workqueue.c:3182 (rcutorture) From: Sachin Sant In-Reply-To: Date: Fri, 24 Mar 2023 08:47:38 +0530 Cc: linuxppc-dev , linux-next@vger.kernel.org, open list , Zqiang Content-Transfer-Encoding: 7bit Message-Id: <23F7ADE0-0B96-4257-8910-6B678E0F0C7A@linux.ibm.com> References: <139BEB3F-BC1C-4ABA-8928-9A8EF3FB5EDD@linux.ibm.com> <233B28DA-70DD-4AD8-9C72-1FFCA6EFE56D@linux.ibm.com> To: "Paul E. McKenney" X-Mailer: Apple Mail (2.3731.400.51.1.1) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: OoTAlPW90XYFrUCV3SZOFYP3mlusXGsr X-Proofpoint-GUID: OoTAlPW90XYFrUCV3SZOFYP3mlusXGsr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-23_15,2023-03-23_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 phishscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 priorityscore=1501 adultscore=0 bulkscore=0 impostorscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2303240025 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> Hello, Sachin, and it looks like you hit something that Zqiang and I >>> have been tracking down. I am guessing that you were using modprobe >>> and rmmod to make this happen, and that this happened at rmmod time. >>> >> Yes, the LTP test script rcu_torture.sh relies on modprobe to load/unload >> the rcutorture module. >> >>> Whatever the reproducer, does the following patch help? >> >> Thank you for the patch. Yes, with this patch applied, the test completes >> successfully without the reported warning. > > Very good, thank you! May we have your Tested-by? Tested-by: Sachin Sant - Sachin