Den fre 27 sep. 2019 00:48Andrew Morton <akpm@linux-foundation.org> skrev:

> On Thu, 26 Sep 2019 10:48:44 +0200 Vitaly Wool <vitalywool@gmail.com>
> wrote:
>
> > There's a really hard to reproduce race in z3fold between
> > z3fold_free() and z3fold_reclaim_page(). z3fold_reclaim_page()
> > can claim the page after z3fold_free() has checked if the page
> > was claimed and z3fold_free() will then schedule this page for
> > compaction which may in turn lead to random page faults (since
> > that page would have been reclaimed by then). Fix that by
> > claiming page in the beginning of z3fold_free().
> >
>
> I take it from the email headers that a
>
> Cc: <stable@vger.kernel.org>
>
> was intended?
>

Oh yes, thanks!

~Vitaly

>