Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753420AbbG1RJh (ORCPT ); Tue, 28 Jul 2015 13:09:37 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:36971 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753220AbbG1RJg (ORCPT ); Tue, 28 Jul 2015 13:09:36 -0400 X-IronPort-AV: E=Sophos;i="5.15,564,1432598400"; d="scan'208";a="288479048" Message-ID: <55B7B74A.8080207@citrix.com> Date: Tue, 28 Jul 2015 18:09:30 +0100 From: David Vrabel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.7.0 MIME-Version: 1.0 To: Mel Gorman CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" 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 X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 945 Lines: 24 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/