Re: [PATCH 0/5] 4.14 backports of fixes for "CoW after fork() issue"

[Suren Baghdasaryan]

On Wed, Apr 7, 2021 at 12:23 PM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Wed, Apr 7, 2021 at 11:47 AM Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote:
> >
> > So, we fixed it, but we don't know why.
> >
> > Peter Xu's patchset that fixed it is here:
> > https://lore.kernel.org/lkml/20200821234958.7896-1-peterx@xxxxxxxxxx/
>
> Yeah, that's the part that ends up being really painful to backport
> (with all the subsequent fixes too), so the 4.14 people would prefer
> to avoid it.
>
> But I think that if it's a "requires dax pmem and ptrace on top", it
> may simply be a non-issue for those users. Although who knows - maybe
> that ends up being a real issue on Android..

A lot to digest, so I need to do some reading now. Thanks everyone!

>
>             Linus