From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754950AbeATJi3 (ORCPT ); Sat, 20 Jan 2018 04:38:29 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:39250 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751068AbeATJiO (ORCPT ); Sat, 20 Jan 2018 04:38:14 -0500 X-Google-Smtp-Source: AH8x227If3A3gPhUoLU60lgQj3QDJjQjTNAhpuHjZ5bC5f74TwLyTU719bmeegvtUihFFwW8bSJpsA== Date: Sat, 20 Jan 2018 10:38:10 +0100 From: Luc Van Oostenryck To: Al Viro Cc: Linus Torvalds , Matthew Wilcox , "Kirill A. Shutemov" , Peter Zijlstra , Andrea Arcangeli , Dave Hansen , Tetsuo Handa , "Kirill A. Shutemov" , Andrew Morton , Johannes Weiner , Joonsoo Kim , Mel Gorman , Tony Luck , Vlastimil Babka , Michal Hocko , "hillf.zj" , Hugh Dickins , Oleg Nesterov , Rik van Riel , Srikar Dronamraju , Vladimir Davydov , Ingo Molnar , Linux Kernel Mailing List , linux-mm , the arch/x86 maintainers , sparse mailing list Subject: Re: [mm 4.15-rc8] Random oopses under memory pressure. Message-ID: <20180120093808.7mol6d7jkngy22ky@ltop.local> References: <20180118145830.GA6406@redhat.com> <20180118165629.kpdkezarsf4qymnw@node.shutemov.name> <20180118234955.nlo55rw2qsfnavfm@node.shutemov.name> <20180119125503.GA2897@bombadil.infradead.org> <20180119221243.GL13338@ZenIV.linux.org.uk> <20180120020237.GM13338@ZenIV.linux.org.uk> <20180120052432.GN13338@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180120052432.GN13338@ZenIV.linux.org.uk> User-Agent: NeoMutt/20171027 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 20, 2018 at 05:24:32AM +0000, Al Viro wrote: > On Sat, Jan 20, 2018 at 02:02:37AM +0000, Al Viro wrote: > > > Note that those sizes are rather sensitive to lockdep, spinlock debugging, etc. > > That they certainly are: on one of the testing .config I'm using it gave this: > 1104 sizeof struct page = 56 Yes, I get this already with defconfig. It's a problem with sparse which ignore the alignment attribute (in fact all 'trailing' attributes in type declarations). I'm looking to fix it. -- Luc Van Oostenryck