From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1757429AbbJ2Ocx (ORCPT <rfc822;w@1wt.eu>);
	Thu, 29 Oct 2015 10:32:53 -0400
Received: from mail-wm0-f49.google.com ([74.125.82.49]:36058 "EHLO
	mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1757347AbbJ2Ocw (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 29 Oct 2015 10:32:52 -0400
X-Greylist: delayed 489 seconds by postgrey-1.27 at vger.kernel.org; Thu, 29 Oct 2015 10:32:52 EDT
Date: Thu, 29 Oct 2015 15:24:40 +0100
From: Michal Hocko <mhocko@kernel.org>
To: kernel test robot <ying.huang@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>, lkp@01.org,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Rik van Riel <riel@redhat.com>, Vitaly Wool <vitalywool@gmail.com>,
        David Rientjes <rientjes@google.com>, Christoph Lameter <cl@linux.com>,
        Johannes Weiner <hannes@cmpxchg.org>, Vlastimil Babka <vbabka@suse.cz>,
        Stephen Rothwell <sfr@canb.auug.org.au>
Subject: Re: [lkp] [mm, page_alloc] 43993977ba: +88% OOM possibility
Message-ID: <20151029142440.GE23598@dhcp22.suse.cz>
References: <87oafjpnb1.fsf@yhuang-dev.intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <87oafjpnb1.fsf@yhuang-dev.intel.com>
User-Agent: Mutt/1.5.24 (2015-08-30)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed 28-10-15 13:36:02, kernel test robot wrote:
> FYI, we noticed the below changes on
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 43993977baecd838d66ccabc7f682342fc6ff635 ("mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd")
> 
> We found the OOM possibility increased 88% in a virtual machine with 1G memory.

Could you provide dmesg output from this test?

Thanks!
-- 
Michal Hocko
SUSE Labs