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Date:   Mon, 30 Nov 2020 17:46:22 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     "Shutemov, Kirill" <kirill.shutemov@...el.com>,
        Matthew Wilcox <willy@...radead.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Yi Zhang <yi.zhang@...hat.com>
Subject: Re: mapcount corruption regression

On Mon, Nov 30, 2020 at 5:20 PM Dan Williams <dan.j.williams@...el.com> wrote:
>
> Kirill, Willy, compound page experts,
>
> I am seeking some debug ideas about the following splat:
>
> BUG: Bad page state in process lt-pmem-ns  pfn:121a12

Looks to be a similar signature that Yi Zhang is seeing:

http://lore.kernel.org/r/51e938d1-aff7-0fa4-1a79-f77ac8bb2f8b@redhat.com

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