From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934498AbcATPKQ (ORCPT ); Wed, 20 Jan 2016 10:10:16 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:35506 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933889AbcATPKM (ORCPT ); Wed, 20 Jan 2016 10:10:12 -0500 Date: Wed, 20 Jan 2016 16:10:08 +0100 From: Michal Hocko To: Sasha Levin Cc: Christoph Lameter , LKML , "linux-mm@kvack.org" , Andrew Morton Subject: Re: mm, vmstat: kernel BUG at mm/vmstat.c:1408! Message-ID: <20160120151007.GG14187@dhcp22.suse.cz> References: <5674A5C3.1050504@oracle.com> <20160120143719.GF14187@dhcp22.suse.cz> <569FA01A.4070200@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <569FA01A.4070200@oracle.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 20-01-16 09:56:26, Sasha Levin wrote: > On 01/20/2016 09:37 AM, Michal Hocko wrote: > > I am just reading through this old discussion again because "vmstat: > > make vmstat_updater deferrable again and shut down on idle" which seems > > to be the culprit AFAIU has been merged as 0eb77e988032 and I do not see > > any follow up fix merged to linus tree > > So this isn't an "old" discussion - the bug is very much there and I can > hit it easily. As a workaround I've "disabled" vmstat. Well the report is since 18th Dec which is over month old. Should we revert 0eb77e988032 as a pre caution and make sure this is done properly in -mm tree. AFAIR none of the proposed fix worked without other fallouts? -- Michal Hocko SUSE Labs