From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07E99C352A4 for ; Mon, 10 Feb 2020 23:07:30 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C60A020733 for ; Mon, 10 Feb 2020 23:07:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C60A020733 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5485C6B0191; Mon, 10 Feb 2020 18:07:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4F8A86B0193; Mon, 10 Feb 2020 18:07:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 40EED6B0194; Mon, 10 Feb 2020 18:07:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0128.hostedemail.com [216.40.44.128]) by kanga.kvack.org (Postfix) with ESMTP id 273B46B0191 for ; Mon, 10 Feb 2020 18:07:29 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id D19C2185D for ; Mon, 10 Feb 2020 23:07:28 +0000 (UTC) X-FDA: 76475755776.16.hole26_70320ab1d641 X-HE-Tag: hole26_70320ab1d641 X-Filterd-Recvd-Size: 3347 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by imf41.hostedemail.com (Postfix) with ESMTP for ; Mon, 10 Feb 2020 23:07:27 +0000 (UTC) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2020 15:07:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,426,1574150400"; d="scan'208";a="227326331" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by fmsmga008.fm.intel.com with ESMTP; 10 Feb 2020 15:07:24 -0800 Date: Tue, 11 Feb 2020 07:07:41 +0800 From: Wei Yang To: Baoquan He Cc: Andrew Morton , richardw.yang@linux.intel.com, David Hildenbrand , Michal Hocko , Naoya Horiguchi , linux-mm@kvack.org Subject: Re: [Bug 206401] kernel panic on Hyper-V after 5 minutes due to memory hot-add Message-ID: <20200210230741.GB32495@richard> Reply-To: Wei Yang References: <20200209213217.73abdc867faec8c359e2ba08@linux-foundation.org> <20200210054027.GI26758@MiWiFi-R3L-srv> <20200209215644.f2dfd7b6cb13f374a0ef8f32@linux-foundation.org> <20200210060923.GC8965@MiWiFi-R3L-srv> <20200210061551.GD8965@MiWiFi-R3L-srv> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200210061551.GD8965@MiWiFi-R3L-srv> User-Agent: Mutt/1.9.4 (2018-02-28) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Feb 10, 2020 at 02:15:51PM +0800, Baoquan He wrote: >On 02/10/20 at 02:09pm, Baoquan He wrote: >> On 02/09/20 at 09:56pm, Andrew Morton wrote: >> > On Mon, 10 Feb 2020 13:40:27 +0800 Baoquan He wrote: >> > >> > > Hi Andrew, >> > > >> > > On 02/09/20 at 09:32pm, Andrew Morton wrote: >> > > > On Tue, 04 Feb 2020 11:25:48 +0000 bugzilla-daemon@bugzilla.kernel.org wrote: >> > > > >> > > > > https://bugzilla.kernel.org/show_bug.cgi?id=206401 >> > > > > >> > > > >> > > > An oops during mem hotadd. Could someone please take a look when >> > > > convenient? >> > > >> > > This has been addressed by Wei Yang's patch, please check it here: >> > > >> > > http://lkml.kernel.org/r/20200209104826.3385-7-bhe@redhat.com >> > > >> > >> > hm, OK, thanks. It's unfortunate that a 5.5 fix is buried in a >> > six-patch series which is still in progress! Can we please merge that >> > as a standalone fix with a cc:stable, Fixes:, etc? > >Maybe can add Fixes tag as follow when merge: > >Fixes: ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug") > The original patch contains this tag. >Wei Yang, please correct me if I am wrong. > >> >> Yes, certainly. >> >> Wei Yang posted it separately earlier. I just grabbed it into my >> patchset when test them all, since hot add/remove of SPARSE|!VMEMMAP >> have been broken since sub-section hotplug added. Wei Yang's old post >> can be found here: >> >> https://lore.kernel.org/linux-mm/20200206125343.9070-1-richardw.yang@linux.intel.com/ >> -- Wei Yang Help you, Help me