linux-kernel - Re: [RFC PATCH 6/6] selftests: Test RLIMIT_NPROC in clone-created user namespaces

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Message-ID: <789bda88-1ef7-8c60-5c00-d3b7a2b8588d@linuxfoundation.org>
Date:   Wed, 9 Feb 2022 18:25:34 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Michal Koutný <mkoutny@...e.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Alexey Gladkov <legion@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>, Shuah Khan <shuah@...nel.org>,
        Christian Brauner <brauner@...nel.org>,
        Solar Designer <solar@...nwall.com>,
        Ran Xiaokai <ran.xiaokai@....com.cn>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        Linux Containers <containers@...ts.linux-foundation.org>,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [RFC PATCH 6/6] selftests: Test RLIMIT_NPROC in clone-created
 user namespaces

On 2/7/22 5:18 AM, Michal Koutný wrote:
> Verify RLIMIT_NPROC observance in user namespaces also in the
> clone(CLONE_NEWUSER) path.
> Note the such a user_ns is created by the privileged user.
> 

Does this test run in non-privileged user mode? If it doesn't
let add a check and skip the test.

> Signed-off-by: Michal Koutný <mkoutny@...e.com>

thanks,
-- Shuah