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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 EFDF4C6778A for ; Sun, 1 Jul 2018 09:28:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A44CF23C31 for ; Sun, 1 Jul 2018 09:28:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A44CF23C31 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752082AbeGAJ2S (ORCPT ); Sun, 1 Jul 2018 05:28:18 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:35150 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751504AbeGAJ2P (ORCPT ); Sun, 1 Jul 2018 05:28:15 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w619Nt7R148352 for ; Sun, 1 Jul 2018 05:28:14 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0b-001b2d01.pphosted.com with ESMTP id 2jxq3gpy08-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 01 Jul 2018 05:28:14 -0400 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 1 Jul 2018 10:28:13 +0100 Received: from b06cxnps4075.portsmouth.uk.ibm.com (9.149.109.197) by e06smtp01.uk.ibm.com (192.168.101.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Sun, 1 Jul 2018 10:28:09 +0100 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w619S8N437486830 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 1 Jul 2018 09:28:08 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B32CE11C052; Sun, 1 Jul 2018 10:27:53 +0100 (BST) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7E67211C04C; Sun, 1 Jul 2018 10:27:53 +0100 (BST) Received: from localhost.localdomain (unknown [9.199.32.112]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Sun, 1 Jul 2018 10:27:53 +0100 (BST) From: Chandan Rajendra To: Ravi Bangoria Cc: darrick.wong@oracle.com, lkml , allison.henderson@oracle.com, hch@lst.de, Michael Ellerman , linux-xfs@vger.kernel.org Subject: Re: xfs: Deadlock between fs_reclaim and sb_internal Date: Sun, 01 Jul 2018 15:00:01 +0530 In-Reply-To: <1583499.AKrs7invYa@localhost.localdomain> References: <1583499.AKrs7invYa@localhost.localdomain> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-TM-AS-GCONF: 00 x-cbid: 18070109-4275-0000-0000-00000293DDF1 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18070109-4276-0000-0000-0000379B53BC Message-Id: <1635784.85vFEPy9OU@localhost.localdomain> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-01_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=828 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807010113 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday, June 29, 2018 11:48:39 AM IST Chandan Rajendra wrote: > On Thursday, June 28, 2018 9:31:32 AM IST Ravi Bangoria wrote: > > Hello Darrick, > > > > Lockdep is reporting a deadlock with following trace. Saw this on my > > powerpc vm with 4GB of ram, running Linus/master kernel. Though, I > > don't have exact testcase to reproduce it. Is this something known? > > I am able to recreate this issue on a ppc64le guest. I will debug this > and provide updates. > Ravi, The issue has already been reported earlier. See https://www.spinics.net/lists/linux-xfs/msg20036.html. I am not familiar with Lockdep code and hence won't be able to help here. -- chandan