From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yk0-f182.google.com (mail-yk0-f182.google.com [209.85.160.182]) by kanga.kvack.org (Postfix) with ESMTP id 119296B0253 for ; Tue, 28 Jul 2015 13:09:37 -0400 (EDT) Received: by ykfw194 with SMTP id w194so101231377ykf.0 for ; Tue, 28 Jul 2015 10:09:36 -0700 (PDT) Received: from SMTP02.CITRIX.COM (smtp02.citrix.com. [66.165.176.63]) by mx.google.com with ESMTPS id n124si15912264ywe.197.2015.07.28.10.09.34 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 28 Jul 2015 10:09:36 -0700 (PDT) Message-ID: <55B7B74A.8080207@citrix.com> Date: Tue, 28 Jul 2015 18:09:30 +0100 From: David Vrabel MIME-Version: 1.0 Subject: Re: vmemmap_verify() BUGs during memory hotplug (4.2-rc1 regression) References: <55B64F1D.8090807@citrix.com> <20150727154146.GP2561@suse.de> In-Reply-To: <20150727154146.GP2561@suse.de> Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" On 27/07/15 16:41, Mel Gorman wrote: > On Mon, Jul 27, 2015 at 04:32:45PM +0100, David Vrabel wrote: >> Mel, >> >> As of commit 8a942fdea560d4ac0e9d9fabcd5201ad20e0c382 (mm: meminit: make >> __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid) >> vmemmap_verify() will BUG_ON() during memory hotplug because of its use >> of early_pfn_to_nid(). Previously, it would have reported bogus (or >> failed to report valid) warnings. >> > > Please test "mm, meminit: Allow early_pfn_to_nid to be used during > runtime" That fixed the BUG_ON() thanks. But I still can't only the new sections because their first page is not reserved, but I've not had time to investigate why this is yet. David -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org