Re: [PATCH v27 24/31] x86/cet/shstk: Handle thread shadow stack

John Allen
2021-07-28T21:35:11Z

On Wed, Jul 21, 2021 at 11:34:53AM -0700, Yu, Yu-cheng wrote:
> On 7/21/2021 11:28 AM, Florian Weimer wrote:
> > I expect that container runtimes turn clone3 into clone in the same way
> > (via ENOSYS), at least for the medium term. So it would make sense to
> > allocate some sort of shadow stack for clone as well, if that's possible
> > to implement in some way.
> >
> > Thanks,
> > Florian
> >
>
> Thanks Florian! And because of that reason, we will put back clone2 support
> in my next v28 patches.
>
> Yu-cheng

I tested with v28 of the patches on the same system and it appears to
fix the issue I was seeing.

Thanks,
John