From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f70.google.com (mail-wm0-f70.google.com [74.125.82.70]) by kanga.kvack.org (Postfix) with ESMTP id E3C606B0038 for ; Thu, 2 Mar 2017 01:44:55 -0500 (EST) Received: by mail-wm0-f70.google.com with SMTP id u63so23953079wmu.0 for ; Wed, 01 Mar 2017 22:44:55 -0800 (PST) Received: from dggrg03-dlp.huawei.com ([45.249.212.189]) by mx.google.com with ESMTPS id 36si9471844wrk.321.2017.03.01.22.44.53 for (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 01 Mar 2017 22:44:54 -0800 (PST) Subject: Re: mm allocation failure and hang when running xfstests generic/269 on xfs References: <20170301044634.rgidgdqqiiwsmfpj@XZHOUW.usersys.redhat.com> <20170302003731.GB24593@infradead.org> <20170302051900.ct3xbesn2ku7ezll@XZHOUW.usersys.redhat.com> From: Bob Liu Message-ID: <25dc5032-db32-5814-cabe-14e015302423@huawei.com> Date: Thu, 2 Mar 2017 14:41:41 +0800 MIME-Version: 1.0 In-Reply-To: <20170302051900.ct3xbesn2ku7ezll@XZHOUW.usersys.redhat.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Xiong Zhou , Christoph Hellwig , mhocko@suse.com Cc: linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org On 2017/3/2 13:19, Xiong Zhou wrote: > On Wed, Mar 01, 2017 at 04:37:31PM -0800, Christoph Hellwig wrote: >> On Wed, Mar 01, 2017 at 12:46:34PM +0800, Xiong Zhou wrote: >>> Hi, >>> >>> It's reproduciable, not everytime though. Ext4 works fine. >> >> On ext4 fsstress won't run bulkstat because it doesn't exist. Either >> way this smells like a MM issue to me as there were not XFS changes >> in that area recently. > > Yap. > > First bad commit: > It looks like not a bug. >>From below commit, the allocation failure print was due to current process received SIGKILL signal. You may need to confirm whether that's the case. Regards, Bob > commit 5d17a73a2ebeb8d1c6924b91e53ab2650fe86ffb > Author: Michal Hocko > Date: Fri Feb 24 14:58:53 2017 -0800 > > vmalloc: back off when the current task is killed > > Reverting this commit on top of > e5d56ef Merge tag 'watchdog-for-linus-v4.11' > survives the tests. > -- 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