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Re: mm: use-after-free in zap_page_range

From Andrea Arcangeli <aarcange@redhat.com>
Newsgroups linux.kernel
Subject Re: mm: use-after-free in zap_page_range
Date 2017-03-03 17:30 +0100
Message-ID <tgYfE-3Kq-11@gated-at.bofh.it> (permalink)
References <tgWQx-2Dz-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hello Dmitry,

On Fri, Mar 03, 2017 at 02:54:26PM +0100, Dmitry Vyukov wrote:
> The following program triggers use-after-free in zap_page_range:
> https://gist.githubusercontent.com/dvyukov/b59dfbaa0cb1e5231094d228fa57c9bd/raw/95c4da18cb96f8aaa47c10012d8c4484fd5917ad/gistfile1.txt

I posted the fix for this one yesterday (found while doing more code
reviews of the upstream code searching for any other potential issue):

https://www.spinics.net/lists/linux-mm/msg122905.html
https://www.spinics.net/lists/linux-mm/msg122903.html

Could you test with those two applied on top of the others updates
that are already in -mm?

Thanks!
Andrea

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Thread

mm: use-after-free in zap_page_range Dmitry Vyukov <dvyukov@google.com> - 2017-03-03 16:00 +0100
  Re: mm: use-after-free in zap_page_range Andrea Arcangeli <aarcange@redhat.com> - 2017-03-03 17:30 +0100
    Re: mm: use-after-free in zap_page_range Dmitry Vyukov <dvyukov@google.com> - 2017-03-08 14:00 +0100

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