From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f69.google.com (mail-pl0-f69.google.com [209.85.160.69]) by kanga.kvack.org (Postfix) with ESMTP id 2D06D6B0003 for ; Thu, 15 Mar 2018 16:43:18 -0400 (EDT) Received: by mail-pl0-f69.google.com with SMTP id h61-v6so3836795pld.3 for ; Thu, 15 Mar 2018 13:43:18 -0700 (PDT) Received: from NAM02-CY1-obe.outbound.protection.outlook.com (mail-cys01nam02on0133.outbound.protection.outlook.com. [104.47.37.133]) by mx.google.com with ESMTPS id az5-v6si4579496plb.617.2018.03.15.13.43.16 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 15 Mar 2018 13:43:16 -0700 (PDT) From: Sasha Levin Subject: Re: [PATCH v2 1/2] mm: uninitialized struct page poisoning sanity checking Date: Thu, 15 Mar 2018 20:43:14 +0000 Message-ID: <20180315204312.n7p4zzrftgg6m7zw@sasha-lappy> References: <20180131210300.22963-1-pasha.tatashin@oracle.com> <20180131210300.22963-2-pasha.tatashin@oracle.com> <20180313234333.j3i43yxeawx5d67x@sasha-lappy> <20180314005350.6xdda2uqzuy4n3o6@sasha-lappy> <20180315190430.o3vs7uxlafzdwgzd@xakep.localdomain> In-Reply-To: <20180315190430.o3vs7uxlafzdwgzd@xakep.localdomain> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-ID: <698089C6C27CF943BDBEFE8F28446663@namprd21.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Pavel Tatashin Cc: "steven.sistare@oracle.com" , "daniel.m.jordan@oracle.com" , "akpm@linux-foundation.org" , "mgorman@techsingularity.net" , "mhocko@suse.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "gregkh@linuxfoundation.org" , "vbabka@suse.cz" , "bharata@linux.vnet.ibm.com" On Thu, Mar 15, 2018 at 03:04:30PM -0400, Pavel Tatashin wrote: >> >> Attached the config. It just happens on boot. > >Hi Sasha, > >I have tried unsuccessfully to reproduce the bug in qemu with 20G RAM, >and 8 CPUs. > >Patch "mm: uninitialized struct page poisoning sanity" should be improved >to make dump_page() to detect poisoned struct page, and simply print hex >in such case. I will send an updated patch later. > >How do you run this on Microsoft hypervisor? Do I need Windows 10 for >that? Booting a Linux VM on Azure would be the easiest, and free too :) >BTW, I am going to be on vacation for the next two week (going to Israel), >so I may not be able to response quickly. Have fun! We may need to hold off on getting this patch merged for the time being. --=20 Thanks, Sasha=