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From:   Jue Wang <juew@google.com>
Date:   Mon, 1 Nov 2021 12:38:44 -0700
Message-ID: <CAPcxDJ5rgmyswPN5kL8-Mk2hk7MCjHXVy6pS50i=KQKzUGFHfA@mail.gmail.com>
Subject: Re: [v5 PATCH 6/6] mm: hwpoison: handle non-anonymous THP correctly
To:     Yang Shi <shy828301@gmail.com>, Hugh Dickins <hughd@google.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        kirill.shutemov@linux.intel.com, linux-fsdevel@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        Linux MM <linux-mm@kvack.org>,
        =?UTF-8?B?SE9SSUdVQ0hJIE5BT1lBKOWggOWPoyDnm7TkuZ8p?= 
        <naoya.horiguchi@nec.com>, Oscar Salvador <osalvador@suse.de>,
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X-Mailing-List: linux-kernel@vger.kernel.org

A related bug but whose fix may belong to a separate series:

split_huge_page fails when invoked concurrently on the same THP page.

It's possible that multiple memory errors on the same THP get consumed
by multiple threads and come down to split_huge_page path easily.

Thanks,
-Jue