From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:56656 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751160AbaFQAly (ORCPT ); Mon, 16 Jun 2014 20:41:54 -0400 Message-ID: <539F9006.4090109@fb.com> Date: Mon, 16 Jun 2014 20:47:02 -0400 From: Chris Mason MIME-Version: 1.0 To: Tsutomu Itoh CC: Linux Btrfs Subject: Re: [3.16-rc1] BUG: soft lockup - CPU#0 stuck for 23s! [kworker/u25:4:5189] References: <539E9026.1020406@jp.fujitsu.com> <539F2FEA.1060809@fb.com> <539F7D8E.9010608@jp.fujitsu.com> <539F8351.3010700@fb.com> <539F846A.4080608@jp.fujitsu.com> In-Reply-To: <539F846A.4080608@jp.fujitsu.com> Content-Type: text/plain; charset="ISO-2022-JP" Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 06/16/2014 07:57 PM, Tsutomu Itoh wrote: > On 2014/06/17 8:52, Chris Mason wrote: >> On 06/16/2014 07:28 PM, Tsutomu Itoh wrote: >>> Hi Chris, >>> >>> On 2014/06/17 2:56, Chris Mason wrote: >>>> On 06/16/2014 02:35 AM, Tsutomu Itoh wrote: >>>>> I encountered soft lockup when executing 'xfstests btrfs/042' on 3.16-rc1. >>>>> >>>> >>>> Did we recover, or was it stuck forever? >>> >>> The following messages are repeatedly output. >>> And stuck forever. >>> >>> [ 1147.942181] BUG: soft lockup - CPU#0 stuck for 23s! [kworker/u25:4:5189] >>> [ 1147.967175] BUG: soft lockup - CPU#3 stuck for 23s! [kworker/u25:9:5194] >>> [ 1147.979172] BUG: soft lockup - CPU#4 stuck for 23s! [kworker/u25:15:5200] >>> [ 1147.991169] BUG: soft lockup - CPU#5 stuck for 23s! [kworker/u25:7:5192] >>> [ 1148.064153] BUG: soft lockup - CPU#6 stuck for 23s! [kworker/u26:3:3182] >> >> Can you please capture a stack trace from all the cpus? Very strange, please try to reproduce again, I'll dig through things here. -chris