From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753591AbcGURYf (ORCPT ); Thu, 21 Jul 2016 13:24:35 -0400 Received: from nm.newmedia-net.de ([217.113.179.122]:35110 "EHLO webmail.newmedia-net.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753396AbcGURYc (ORCPT ); Thu, 21 Jul 2016 13:24:32 -0400 To: Michal Hocko , Ian Jackson References: <20160718153046.GA26126@char.us.oracle.com> <20160718161805.GA18050@char.us.oracle.com> <73189037-1a4e-915a-7120-112f2afe3342@dd-wrt.com> <22416.50164.521430.604730@mariner.uk.xensource.com> <20160721142328.GO26379@dhcp22.suse.cz> Cc: "stable@vger.kernel.org" , Konrad Rzeszutek Wilk , "Odzioba, Lukasz" , "linux-kernel@vger.kernel.org" , "xen-devel@lists.xensource.com" , "boris.ostrovsky@oracle.com" , "david.vrabel@citrix.com" , "akpm@linux-foundation.org" From: Sebastian Gottschall Message-ID: Date: Thu, 21 Jul 2016 19:24:13 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <20160721142328.GO26379@dhcp22.suse.cz> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 217.234.140.5 X-SA-Exim-Mail-From: s.gottschall@dd-wrt.com Subject: Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush lru pvecs on compound page arrival" from stable tree? Was:[osstest-admin@xenproject.org: [Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-qemut-rhel6hvm-amd] X-SA-Exim-Version: 4.2.1 (built Thu, 26 May 2011 15:22:33 +0200) X-SA-Exim-Scanned: Yes (on webmail.newmedia-net.de) X-NMN-MailScanner-Information: Please contact the ISP for more information X-NMN-MailScanner-ID: 1bQHho-0005vF-Eo X-NMN-MailScanner: Found to be clean X-NMN-MailScanner-From: s.gottschall@dd-wrt.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 21.07.2016 um 16:23 schrieb Michal Hocko: > On Thu 21-07-16 13:45:40, Ian Jackson wrote: >> I see that linux-4.1.y is still at 5880876e9469 which has the serious >> bug introduced by the backport c5ad33184354 "mm/swap.c: flush lru >> pvecs on compound page arrival". >> >> The analogous problem is also still affecting at least linux-3.18.y. >> >> Is there some problem with reverting this patch in the stable >> branches ? > Sasha has mentioned he queued up the follow up fix. I am not sure who is > the 3.18 maintainer but he should do the same. > > I am slightly worried that Sasha's email is bouncing for several days > and I am not sure who is his backup. For the time being I would just > suggest doing a local revert or apply Steven's patch from > http://www.spinics.net/lists/stable/msg138760.html i patched it it locally and it resolved the issue in 3.18 -- Mit freundlichen Grüssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Berliner Ring 101, 64625 Bensheim Registergericht: Amtsgericht Darmstadt, HRB 25473 Geschäftsführer: Peter Steinhäuser, Christian Scheele http://www.dd-wrt.com email: s.gottschall@dd-wrt.com Tel.: +496251-582650 / Fax: +496251-5826565 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nm.newmedia-net.de ([217.113.179.122]:35110 "EHLO webmail.newmedia-net.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753396AbcGURYc (ORCPT ); Thu, 21 Jul 2016 13:24:32 -0400 To: Michal Hocko , Ian Jackson References: <20160718153046.GA26126@char.us.oracle.com> <20160718161805.GA18050@char.us.oracle.com> <73189037-1a4e-915a-7120-112f2afe3342@dd-wrt.com> <22416.50164.521430.604730@mariner.uk.xensource.com> <20160721142328.GO26379@dhcp22.suse.cz> Cc: "stable@vger.kernel.org" , Konrad Rzeszutek Wilk , "Odzioba, Lukasz" , "linux-kernel@vger.kernel.org" , "xen-devel@lists.xensource.com" , "boris.ostrovsky@oracle.com" , "david.vrabel@citrix.com" , "akpm@linux-foundation.org" From: Sebastian Gottschall Message-ID: Date: Thu, 21 Jul 2016 19:24:13 +0200 MIME-Version: 1.0 In-Reply-To: <20160721142328.GO26379@dhcp22.suse.cz> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush lru pvecs on compound page arrival" from stable tree? Was:[osstest-admin@xenproject.org: [Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-qemut-rhel6hvm-amd] Sender: stable-owner@vger.kernel.org List-ID: Am 21.07.2016 um 16:23 schrieb Michal Hocko: > On Thu 21-07-16 13:45:40, Ian Jackson wrote: >> I see that linux-4.1.y is still at 5880876e9469 which has the serious >> bug introduced by the backport c5ad33184354 "mm/swap.c: flush lru >> pvecs on compound page arrival". >> >> The analogous problem is also still affecting at least linux-3.18.y. >> >> Is there some problem with reverting this patch in the stable >> branches ? > Sasha has mentioned he queued up the follow up fix. I am not sure who is > the 3.18 maintainer but he should do the same. > > I am slightly worried that Sasha's email is bouncing for several days > and I am not sure who is his backup. For the time being I would just > suggest doing a local revert or apply Steven's patch from > http://www.spinics.net/lists/stable/msg138760.html i patched it it locally and it resolved the issue in 3.18 -- Mit freundlichen Gr�ssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Berliner Ring 101, 64625 Bensheim Registergericht: Amtsgericht Darmstadt, HRB 25473 Gesch�ftsf�hrer: Peter Steinh�user, Christian Scheele http://www.dd-wrt.com email: s.gottschall@dd-wrt.com Tel.: +496251-582650 / Fax: +496251-5826565