linux-kernel - Re: [RFC PATCH security-next 0/4] Introducing Hornet LSM

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Message-ID: <Z97xvUul1ObkmulE@kernel.org>
Date: Sat, 22 Mar 2025 19:22:05 +0200
From: Jarkko Sakkinen <jarkko@...nel.org>
To: Blaise Boscaccy <bboscaccy@...ux.microsoft.com>
Cc: Jonathan Corbet <corbet@....net>, David Howells <dhowells@...hat.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Paul Moore <paul@...l-moore.com>, James Morris <jmorris@...ei.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, Shuah Khan <shuah@...nel.org>,
	Mickaël Salaün <mic@...ikod.net>,
	Günther Noack <gnoack@...gle.com>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Jan Stancek <jstancek@...hat.com>, Neal Gompa <neal@...pa.dev>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-kbuild@...r.kernel.org,
	linux-kselftest@...r.kernel.org, bpf@...r.kernel.org,
	llvm@...ts.linux.dev, nkapron@...gle.com, teknoraver@...a.com,
	roberto.sassu@...wei.com, xiyou.wangcong@...il.com
Subject: Re: [RFC PATCH security-next 0/4] Introducing Hornet LSM

On Fri, Mar 21, 2025 at 09:45:02AM -0700, Blaise Boscaccy wrote:
> This patch series introduces the Hornet LSM.
> 
> Hornet takes a simple approach to light-skeleton-based eBPF signature

Can you define "light-skeleton-based" before using the term.

This is the first time in my life when I hear about it.

> verification. Signature data can be easily generated for the binary

s/easily//

Useless word having no measure.

> data that is generated via bpftool gen -L. This signature can be

I have no idea what that command does.

"Signature data can be generated for the binary data as follows:

bpftool gen -L

<explanation>"

Here you'd need to answer to couple of unknowns:

1. What is in exact terms "signature data"?
2. What does "bpftool gen -L" do?

This feedback maps to other examples too in the cover letter.

BR, Jarkko