linux-kernel - Re: [PATCH] hardening: Disable GCC randstruct for COMPILE

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Message-Id: <37bccc57-01b2-46ab-b973-ad52590f4ca2@app.fastmail.com>
Date: Wed, 09 Apr 2025 17:22:30 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Kees Cook" <kees@...nel.org>
Cc: "Mark Brown" <broonie@...nel.org>,
 "Gustavo A. R. Silva" <gustavoars@...nel.org>,
 "Paul Moore" <paul@...l-moore.com>, "James Morris" <jmorris@...ei.org>,
 "Serge E. Hallyn" <serge@...lyn.com>, linux-hardening@...r.kernel.org,
 linux-security-module@...r.kernel.org,
 Mickaël Salaün <mic@...ikod.net>,
 Günther Noack <gnoack@...gle.com>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hardening: Disable GCC randstruct for COMPILE_TEST

On Wed, Apr 9, 2025, at 17:11, Kees Cook wrote:
> There is a GCC crash bug in the randstruct for latest GCC versions that
> is being tickled by landlock[1]. Temporarily disable GCC randstruct for
> COMPILE_TEST builds to unbreak CI systems for the coming -rc2. This can
> be restored once the bug is fixed.
>
> Suggested-by: Mark Brown <broonie@...nel.org>
> Link: 
> https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/ 
> [1]
> Signed-off-by: Kees Cook <kees@...nel.org>

Acked-by: Arnd Bergmann <arnd@...db.de>