Re: [GIT PULL] Please pull proc and exec work for 5.7-rc1

Oleg Nesterov
2020-04-28T19:08:55Z

On 04/28, Linus Torvalds wrote:
>
> On Mon, Apr 27, 2020 at 7:56 PM Bernd Edlinger
> <bernd.edlinger@hotmail.de> wrote:
> >
> > was this resolved meanwhile?
>
> No. I think the tentative plan is to just apply Oleg's "don't wait for
> zombie threads with cred_guard_mutex held" patch, hopefully with that
> de_thread() moved into install_exec_creds() (right after the dropping
> of the locks).

Oops. I can update that old patch but somehow I thought there is a better
plan which I don't yet understand...

And, IIRC, Jan had some ideas how to rework the new creds calculation in
execve paths to avoid the cred_guard_mutex deadlock?

Oleg.