Re: [PATCH] Revert "exec: make de_thread() freezable (was: Re: Linux 4.20-rc4)

From: Oleg Nesterov
Date: Wed Dec 05 2018 - 09:36:25 EST


Ingo, et al,

Sorry, I am sick and can't participate this discussion right now,

On 12/04, Ingo Molnar wrote:
>
> * Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
>
> > we really need to narrow the (huge) scope of ->cred_guard_mutex in exec paths.
> >
> > my attempt to fix this was nacked, and nobody suggested a better solution so far.
>
> Any link to your patch and the NAK?

See https://lore.kernel.org/lkml/20170213141452.GA30203@xxxxxxxxxx/

No questions, the patch wasn't pretty. And imo we need to rework the security
hooks in the long term.

Oleg.