linux-kernel - Re: [PATCH] bpf: lsm: Disable or enable BPF LSM at boot time

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <9268bd47-93db-1591-e224-8d3da333636e@iogearbox.net>
Date:   Mon, 6 Jul 2020 20:51:35 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Lorenzo Fontana <fontanalorenz@...il.com>,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        Jonathan Corbet <corbet@....net>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>
Subject: Re: [PATCH] bpf: lsm: Disable or enable BPF LSM at boot time

On 7/6/20 6:57 PM, Lorenzo Fontana wrote:
> This option adds a kernel parameter 'bpf_lsm',
> which allows the BPF LSM to be disabled at boot.
> The purpose of this option is to allow a single kernel
> image to be distributed with the BPF LSM built in,
> but not necessarily enabled.
> 
> Signed-off-by: Lorenzo Fontana <fontanalorenz@...il.com>

Well, this explains what the patch is doing but not *why* you need it exactly.
Please explain your concrete use-case for this patch.

Thanks,
Daniel