linux-kernel - Re: [PATCH v3 7/9] module: Move lockdown check into generic module loader

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Message-ID: <20251123171054.wnPvVQrF@linutronix.de>
Date: Sun, 23 Nov 2025 18:10:54 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Paul Moore <paul@...l-moore.com>
Cc: Thomas Weißschuh <linux@...ssschuh.net>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Arnd Bergmann <arnd@...db.de>, Luis Chamberlain <mcgrof@...nel.org>,
	Petr Pavlu <petr.pavlu@...e.com>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Daniel Gomez <da.gomez@...sung.com>,
	James Morris <jmorris@...ei.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Jonathan Corbet <corbet@....net>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>, Mimi Zohar <zohar@...ux.ibm.com>,
	Roberto Sassu <roberto.sassu@...wei.com>,
	Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
	Eric Snowberg <eric.snowberg@...cle.com>,
	Nicolas Schier <nicolas.schier@...ux.dev>,
	Fabian Grünbichler <f.gruenbichler@...xmox.com>,
	Arnout Engelen <arnout@...t.net>,
	Mattia Rizzolo <mattia@...reri.org>, kpcyrd <kpcyrd@...hlinux.org>,
	Christian Heusel <christian@...sel.eu>,
	Câju Mihai-Drosi <mcaju95@...il.com>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, linux-modules@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-doc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-integrity@...r.kernel.org
Subject: Re: [PATCH v3 7/9] module: Move lockdown check into generic module
 loader

On 2025-11-19 14:55:47 [-0500], Paul Moore wrote:
> On Wed, Nov 19, 2025 at 6:20 AM Sebastian Andrzej Siewior
> <bigeasy@...utronix.de> wrote:
> > On 2025-04-29 15:04:34 [+0200], Thomas Weißschuh wrote:
> > > The lockdown check buried in module_sig_check() will not compose well
> > > with the introduction of hash-based module validation.
> >
> > An explanation of why would be nice.
> 
> /me shrugs
> 
> I thought the explanation was sufficient.

Okay. So if it is just me and everyone is well aware then okay.

Sebastian