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=-1.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 E2564C282C2 for ; Wed, 13 Feb 2019 11:33:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9D02C2073D for ; Wed, 13 Feb 2019 11:33:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550057602; bh=+jioOy0azxh/2zqDr9FIb7eSsQrlWWVBb3lyQ9121R4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=wyU8OtYQEjM+rRr32liippZhd/Puj82ZfP+XjC1lJiH/jF+ey8Axix38wtObAh1IC Er5xIzbxN8fGutVsL0vY7jKg8teMGItGaK+luu2mw0fK0RS5p1I7FGaqz4Ll0HstOp AnkBv9Alx5jqMaUyXf+O9GXBVbiNf8vbZN4hRzrk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403929AbfBMLdV (ORCPT ); Wed, 13 Feb 2019 06:33:21 -0500 Received: from mail-it1-f194.google.com ([209.85.166.194]:35979 "EHLO mail-it1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726174AbfBMLdU (ORCPT ); Wed, 13 Feb 2019 06:33:20 -0500 Received: by mail-it1-f194.google.com with SMTP id h6so3714988itl.1; Wed, 13 Feb 2019 03:33:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=gdIwE2aBy/rd4nMZfHWmtIjw8GVWglWwxpfhXIWlMCc=; b=I72evs5DmhA/IkqhBTn3SfCPZeRF44Zs9eI4QXeKRbAp/XMivxySnEY+AVra3YHelk 4aAAZIjJyYBdCd80BK058Cv/TU/cPa1eTldyk5WNgwjTspp9YPoR4t+2DY2fqgLZ2mIS bR0baOHsM/las67jgmo7vKyr/i6wCBw0aLCiMznGEhiMT7z/tGSTrSRdlFddmJxXdJnt dFcMwgAgBBO8WvLUxB0yS/0hgHjvqKIqqM86qz6+3hNtqyctHXxlLZBkdP179a4naxga mDzumdjxp3lFWYKeN02zMYjabvPf09NDfLscjQFWWAfjF3FsncUH94oroQYLOR/++Fto ZOmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=gdIwE2aBy/rd4nMZfHWmtIjw8GVWglWwxpfhXIWlMCc=; b=BOwujf7v46ddGfTH5udTkl/+s4Qhqp9AjfBooKnj0aAsndDCmdQ40bRJ246LR28uln BEHvfNiEU9kvJTWuzSyMmL7FL5+2BhWRFzzSfLsyqhpw1ABM71f8bwNtEGfttrrVICdL NkENU28rC7PxPcVg+KSczH5TFXJ+ICArF0I4OgRbnWUYbvykLDoILCplQ7tmr//MXVU5 zCPlVFH21vDxU4PAt711R38KSMPJau2jzDiooQ0we8bzHRK3IZ6KRmJ017wbmA5wQjtb VBh0B7/VNevkzxG4krBR3BR+qQ4nuRKAwlbh6SnNetkdrL72kHrH2cX/Jhn0cVkU6c9w 7Taw== X-Gm-Message-State: AHQUAuYHgcGo1ABrEOdjzr4ZfDfaIIvYLXGwd6FjxkhbcegmhjHtLrLc aDx11TRk5AoXapLL0TsEz6I= X-Google-Smtp-Source: AHgI3IZLa6ZrZ3frPClxSclZ9XAR+2Ge7zfdXLzhOnpOJ2ueM396dqtnJMqSnq3bNGfHt/TMWjkdhg== X-Received: by 2002:a6b:b4cf:: with SMTP id d198mr17658iof.96.1550057599322; Wed, 13 Feb 2019 03:33:19 -0800 (PST) Received: from google.com ([2401:fa00:d:0:98f1:8b3d:1f37:3e8]) by smtp.gmail.com with ESMTPSA id y184sm3268683ity.27.2019.02.13.03.33.14 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 13 Feb 2019 03:33:17 -0800 (PST) Date: Wed, 13 Feb 2019 20:33:12 +0900 From: Minchan Kim To: gregkh@linuxfoundation.org Cc: linux-mm , LKML , Johannes Weiner , "Kirill A . Shutemov" , Michal Hocko , Andrew Morton , Hugh Dickins , Liu Bo , stable@vger.kernel.org, Martin Liu Subject: Re: [PATCH] mm: Fix the pgtable leak Message-ID: <20190213113312.GA34988@google.com> References: <20190213112900.33963-1-minchan@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190213112900.33963-1-minchan@kernel.org> User-Agent: Mutt/1.10.1+60 (6df12dc1) (2018-08-07) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 13, 2019 at 08:29:00PM +0900, Minchan Kim wrote: > [1] was backported to v4.9 stable tree but it introduces pgtable > memory leak because with fault retrial, preallocated pagetable > could be leaked in second iteration. > To fix the problem, this patch backport [2]. > > [1] 5cf3e5ff95876, mm, memcg: fix reclaim deadlock with writeback > [2] b0b9b3df27d10, mm: stop leaking PageTables > > Fixes: 5cf3e5ff95876 ("mm, memcg: fix reclaim deadlock with writeback") > Cc: Johannes Weiner > Cc: Kirill A. Shutemov > Cc: Michal Hocko > Cc: Andrew Morton > Cc: Hugh Dickins > Cc: Liu Bo > Cc: [4.9] > Signed-off-by: Minchan Kim Reported-by: Martin Liu