From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752831AbeDJL45 (ORCPT ); Tue, 10 Apr 2018 07:56:57 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:41892 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752788AbeDJL4z (ORCPT ); Tue, 10 Apr 2018 07:56:55 -0400 Date: Tue, 10 Apr 2018 04:56:51 -0700 From: Matthew Wilcox To: Minchan Kim Cc: Chao Yu , Jaegeuk Kim , Christopher Lameter , Andrew Morton , linux-mm , LKML , Johannes Weiner , Jan Kara , Chris Fries , linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH] mm: workingset: fix NULL ptr dereference Message-ID: <20180410115651.GA22118@bombadil.infradead.org> References: <20180409111403.GA31652@bombadil.infradead.org> <20180409112514.GA195937@rodete-laptop-imager.corp.google.com> <7706245c-2661-f28b-f7f9-8f11e1ae932b@huawei.com> <20180409144958.GA211679@rodete-laptop-imager.corp.google.com> <20180409152032.GB11756@bombadil.infradead.org> <20180409230409.GA214542@rodete-desktop-imager.corp.google.com> <20180410011211.GA31282@bombadil.infradead.org> <20180410023339.GB214542@rodete-desktop-imager.corp.google.com> <20180410024152.GC31282@bombadil.infradead.org> <20180410025903.GA38000@rodete-desktop-imager.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180410025903.GA38000@rodete-desktop-imager.corp.google.com> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 10, 2018 at 11:59:03AM +0900, Minchan Kim wrote: > Okay, I hope this version clear current concerns. It doesn't. The right place to warn about GFP_ZERO used with a constructor is _slab_, like the patch I already sent. We have no idea what other places might have the same bug, and slab is the only place to catch that.