From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f172.google.com (mail-ig0-f172.google.com [209.85.213.172]) by kanga.kvack.org (Postfix) with ESMTP id A47C96B0005 for ; Mon, 21 Dec 2015 16:14:20 -0500 (EST) Received: by mail-ig0-f172.google.com with SMTP id to18so44511049igc.0 for ; Mon, 21 Dec 2015 13:14:20 -0800 (PST) Received: from resqmta-po-07v.sys.comcast.net (resqmta-po-07v.sys.comcast.net. [2001:558:fe16:19:96:114:154:166]) by mx.google.com with ESMTPS id i2si18024894iof.127.2015.12.21.13.14.20 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Mon, 21 Dec 2015 13:14:20 -0800 (PST) Date: Mon, 21 Dec 2015 15:14:18 -0600 (CST) From: Christoph Lameter Subject: Re: mm, vmstat: kernel BUG at mm/vmstat.c:1408! In-Reply-To: <56786A22.9030103@oracle.com> Message-ID: References: <5674A5C3.1050504@oracle.com> <567860EB.4000103@oracle.com> <56786A22.9030103@oracle.com> Content-Type: text/plain; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Sasha Levin Cc: Michal Hocko , LKML , "linux-mm@kvack.org" On Mon, 21 Dec 2015, Sasha Levin wrote: > I've also noticed a new warning from the workqueue code which my scripts > didn't pick up before: > > [ 3462.380681] BUG: workqueue lockup - pool cpus=2 node=2 flags=0x4 nice=0 stuck for 54s! > [ 3462.522041] workqueue vmstat: flags=0xc > [ 3462.527795] pwq 4: cpus=2 node=2 flags=0x0 nice=0 active=1/256 > [ 3462.554836] pending: vmstat_update Does that mean that vmstat_update locks up or something that schedules it? Also what workload triggers the BUG()? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org