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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7857EC433F5 for ; Thu, 17 Feb 2022 08:48:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C39EB6B0074; Thu, 17 Feb 2022 03:48:33 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BC1786B0075; Thu, 17 Feb 2022 03:48:33 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A89416B0078; Thu, 17 Feb 2022 03:48:33 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0073.hostedemail.com [216.40.44.73]) by kanga.kvack.org (Postfix) with ESMTP id 960F96B0074 for ; Thu, 17 Feb 2022 03:48:33 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 2D617181019BF for ; Thu, 17 Feb 2022 08:48:33 +0000 (UTC) X-FDA: 79151645706.22.D840711 Received: from ha.nfschina.com (mail.nfschina.com [124.16.136.209]) by imf25.hostedemail.com (Postfix) with ESMTP id 306E0A0004 for ; Thu, 17 Feb 2022 08:48:32 +0000 (UTC) Received: from localhost (unknown [127.0.0.1]) by ha.nfschina.com (Postfix) with ESMTP id 71CB21E80D5E; Thu, 17 Feb 2022 16:44:05 +0800 (CST) X-Virus-Scanned: amavisd-new at test.com Received: from ha.nfschina.com ([127.0.0.1]) by localhost (ha.nfschina.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TmbRzabDwoTH; Thu, 17 Feb 2022 16:44:03 +0800 (CST) Received: from [172.30.12.152] (unknown [180.167.10.98]) (Authenticated sender: liqiong@nfschina.com) by ha.nfschina.com (Postfix) with ESMTPA id D28F71E80CB5; Thu, 17 Feb 2022 16:44:02 +0800 (CST) Subject: Re: [PATCH] mm: fix dereference a null pointer in migrate[_huge]_page_move_mapping() To: David Hildenbrand , Greg KH Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20220217063808.42018-1-liqiong@nfschina.com> From: =?UTF-8?B?5p2O5Yqb55C8?= Message-ID: <8f00ecbf-245d-f063-40a3-4aaa77680b73@nfschina.com> Date: Thu, 17 Feb 2022 16:48:27 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US X-Rspamd-Queue-Id: 306E0A0004 X-Rspam-User: Authentication-Results: imf25.hostedemail.com; dkim=none; spf=none (imf25.hostedemail.com: domain of liqiong@nfschina.com has no SPF policy when checking 124.16.136.209) smtp.mailfrom=liqiong@nfschina.com; dmarc=none X-Stat-Signature: mybndihsb9mm5gq65z1xzedb77hz4zqu X-Rspamd-Server: rspam03 X-HE-Tag: 1645087712-460712 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000005, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: =E5=9C=A8 2022/2/17 =E4=B8=8B=E5=8D=883:51, David Hildenbrand =E5=86=99=E9= =81=93: > On 17.02.22 08:29, Greg KH wrote: >> On Thu, Feb 17, 2022 at 02:38:08PM +0800, liqiong wrote: >>> Upstream has no this bug. >> What do you mean by this? >> >> confused, > Dito. If this is fixed upstream and broken in stable kernels, we'd want > either a backport of the relevant upstream fix, or if too complicated, = a > stable-only fix. > > There is a wrong describe=EF=BC=8C i thought 'Upstream' as the newest cod= e. The newest code has no this bug, i should submit this patch to "longterm:= 4.19". How could i do it ? Thanks.