linux-hardening - Re: [PATCH v2 3/3] drm/vc4: tests: Use KUNIT_DEFINE_ACTION

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Date: Tue, 28 Nov 2023 14:53:37 +0000
From: "Maxime Ripard" <mripard@...nel.org>
To: "David Gow" <davidgow@...gle.com>
Cc: dlatypov@...gle.com, kunit-dev@...glegroups.com, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, llvm@...ts.linux.dev, "Benjamin
 Berg" <benjamin.berg@...el.com>, "Brendan Higgins" <brendan.higgins@...ux.dev>, "Kees
 Cook" <keescook@...omium.org>, "Maxime Ripard" <mripard@...nel.org>, "Nathan
 Chancellor" <nathan@...nel.org>, "Nick Desaulniers" <ndesaulniers@...gle.com>, "Rae
 Moar" <rmoar@...gle.com>, "Richard Fitzgerald" <rf@...nsource.cirrus.com>, "Tom
 Rix" <trix@...hat.com>
Subject: Re: [PATCH v2 3/3] drm/vc4: tests: Use KUNIT_DEFINE_ACTION_WRAPPER

On Tue, 28 Nov 2023 15:24:07 +0800, David Gow wrote:
> In order to pass functions to kunit_add_action(), they need to be of the
> kunit_action_t type. While casting the function pointer can work, it
> will break control-flow integrity.
> 
> vc4_mock already defines such a wrapper for drm_dev_unregister(), but it
> 
> [ ... ]

Reviewed-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime