linux-kernel - Re: [PATCH] exit: Retain nsproxy for exit_task

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Message-ID: <20211209163938.GD63648@blackbody.suse.cz>
Date:   Thu, 9 Dec 2021 17:39:38 +0100
From:   Michal Koutný <mkoutny@...e.com>
To:     Christian Brauner <christian.brauner@...ntu.com>
Cc:     Tejun Heo <tj@...nel.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jens Axboe <axboe@...nel.dk>,
        Kees Cook <keescook@...omium.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jim Newsome <jnewsome@...project.org>,
        Alexey Gladkov <legion@...nel.org>,
        Security Officers <security@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Jann Horn <jannh@...gle.com>
Subject: Re: [PATCH] exit: Retain nsproxy for exit_task_work() work entries

On Thu, Dec 09, 2021 at 04:06:55PM +0100, Christian Brauner <christian.brauner@...ntu.com> wrote:
> That was discussed and is intentional and is supposed to mirror the
> behavior of cgroup.freeze. Delegated killing was supposed to work and
> was one use-case.

Thanks for the clarification.

The cgroup_kill() doesn't need the override_creds() treating then
(clearing my previous wondering).


Michal