linux-kernel - Re: [PATCH v3 0/2] mm: fix initialization of struct page for holes in memory layout

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Date:   Mon, 11 Jan 2021 16:58:01 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Andrea Arcangeli <aarcange@...hat.com>,
        Baoquan He <bhe@...hat.com>, Borislav Petkov <bp@...en8.de>,
        David Hildenbrand <david@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...nel.org>,
        Mike Rapoport <rppt@...ux.ibm.com>, Qian Cai <cai@....pw>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vlastimil Babka <vbabka@...e.cz>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, x86@...nel.org
Subject: Re: [PATCH v3 0/2] mm: fix initialization of struct page for holes
 in  memory layout

On Mon, 11 Jan 2021 21:40:15 +0200 Mike Rapoport <rppt@...nel.org> wrote:

> Commit 73a6e474cb37 ("mm: memmap_init: iterate over
> memblock regions rather that check each PFN") exposed several issues with
> the memory map initialization and these patches fix those issues.
> 
> Initially there were crashes during compaction that Qian Cai reported back
> in April [1]. It seemed back then that the problem was fixed, but a few
> weeks ago Andrea Arcangeli hit the same bug [2] and there was an additional
> discussion at [3].

The earlier version of these fixes had cc:stable.  Was the omission
this time deliberate?