netdev - Re: [PATCH v4 2/4] bpf-lsm: Make bpf_lsm_userns

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Date:   Tue, 2 Aug 2022 23:29:12 +0200
From:   KP Singh <kpsingh@...nel.org>
To:     Frederick Lawler <fred@...udflare.com>
Cc:     revest@...omium.org, jackmanb@...omium.org, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        jmorris@...ei.org, serge@...lyn.com, paul@...l-moore.com,
        stephen.smalley.work@...il.com, eparis@...isplace.org,
        shuah@...nel.org, brauner@...nel.org, casey@...aufler-ca.com,
        ebiederm@...ssion.com, bpf@...r.kernel.org,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, kernel-team@...udflare.com,
        cgzones@...glemail.com, karl@...badwolfsecurity.com
Subject: Re: [PATCH v4 2/4] bpf-lsm: Make bpf_lsm_userns_create() sleepable

On Mon, Aug 1, 2022 at 8:02 PM Frederick Lawler <fred@...udflare.com> wrote:
>
> Users may want to audit calls to security_create_user_ns() and access
> user space memory. Also create_user_ns() runs without
> pagefault_disabled(). Therefore, make bpf_lsm_userns_create() sleepable
> for mandatory access control policies.
>
> Signed-off-by: Frederick Lawler <fred@...udflare.com>
> Acked-by: Christian Brauner (Microsoft) <brauner@...nel.org>

Acked-by: KP Singh <kpsingh@...nel.org>