Re: [PATCH v1 00/15] mm: COW fixes part 2: reliable GUP pins of anonymous pages

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To: David Hildenbrand <david@xxxxxxxxxx>
Subject: Re: [PATCH v1 00/15] mm: COW fixes part 2: reliable GUP pins of anonymous pages
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 8 Mar 2022 13:22:11 -0800
Cc: Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, David Rientjes <rientjes@xxxxxxxxxx>, Shakeel Butt <shakeelb@xxxxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxxxxx>, Yang Shi <shy828301@xxxxxxxxx>, "Kirill A . Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxxxx>, Nadav Amit <namit@xxxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxxx>, Roman Gushchin <guro@xxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, Donald Dutile <ddutile@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Liang Zhang <zhangliang5@xxxxxxxxxx>, Pedro Gomes <pedrodemargomes@xxxxxxxxx>, Oded Gabbay <oded.gabbay@xxxxxxxxx>, Linux-MM <linux-mm@xxxxxxxxx>, Khalid Aziz <khalid.aziz@xxxxxxxxxx>
In-reply-to: <20220308141437.144919-1-david@redhat.com>
References: <20220308141437.144919-1-david@redhat.com>

On Tue, Mar 8, 2022 at 6:14 AM David Hildenbrand <david@xxxxxxxxxx> wrote:
>
> This series fixes memory corruptions when a GUP pin (FOLL_PIN) was taken
> on an anonymous page and COW logic fails to detect exclusivity of the page
> to then replacing the anonymous page by a copy in the page table [...]

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  - From: David Hildenbrand

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