linux-kernel - Re: vmemmap_verify() BUGs during memory hotplug (4.2-rc1 regression)

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Message-ID: <20150727154146.GP2561@suse.de>
Date:	Mon, 27 Jul 2015 16:41:46 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: vmemmap_verify() BUGs during memory hotplug (4.2-rc1 regression)

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"

-- 
Mel Gorman
SUSE Labs
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