From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:56174 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751523AbeGAJ2Q (ORCPT ); Sun, 1 Jul 2018 05:28:16 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w619Ns2G142029 for ; Sun, 1 Jul 2018 05:28:15 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2jxqcpeqjy-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sun, 01 Jul 2018 05:28:15 -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 From: Chandan Rajendra 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" Message-Id: <1635784.85vFEPy9OU@localhost.localdomain> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: Ravi Bangoria Cc: darrick.wong@oracle.com, lkml , allison.henderson@oracle.com, hch@lst.de, Michael Ellerman , linux-xfs@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