linux-kernel - Re: [GIT PULL] namespaces related fixes for v4.11-rc1

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Message-ID: <8737f54rue.fsf@xmission.com>
Date:   Thu, 23 Feb 2017 14:29:45 +1300
From:   ebiederm@...ssion.com (Eric W. Biederman)
To:     Aleksa Sarai <asarai@...e.de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        Linux Containers <containers@...ts.linux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] namespaces related fixes for v4.11-rc1

Aleksa Sarai <asarai@...e.de> writes:

>> The only known user of this prctl systemd
>> forks all children after the prctl.  So no userspace regressions will
>> occur.
>
> Note that runC and containerd (and thus Docker) as well as cri-o use the prctl
> as well -- to be able to collect exit codes from a non-child process (namely to
> collect the exit code from PID 1 in the container).

Are any of those affected by the change?  I would not expect so.  As it
would require having children or grand children whose exit codes you
don't want to collect.

Eric