From patchwork Wed Apr 9 15:11:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 14044982 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F34225DAFC; Wed, 9 Apr 2025 15:12:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744211526; cv=none; b=E/VrrWM3UalNazvWnBbrS94SjDEROsupXbMFRCle8c9h79uPtGl1EQ56Qb44wW6WIz0oPtpujsEkF/8EcnL/h6k4BWp0EUwxRpwi2nNs/9ietIQEp0379pQop7Qb1GUEma3bLx4qqpBotsM8xN1W8czYOj+j9mgzT1cL8Z1vr60= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744211526; c=relaxed/simple; bh=V9QuYbvBT5ghNE+9yNY1nau6WUkN8UbS/ahNkHmcztE=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=KmfBTT+iPHEHmJiSvj5FQsj9g91Rci5Gjmvq5GmJQNXULK5NYI4oKrYL4Ay29pUdckwZUIMU+i5sQij0z+m9Z5nl8djQtccimo+e1s+OHB1rHCw8xggm4sykJoQOCFUVoEM1/v93hMFpKXW2FuH9tM3nN1vUaEPcP8l9L9qjNIo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fUlciLw6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fUlciLw6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88812C4CEE2; Wed, 9 Apr 2025 15:12:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744211525; bh=V9QuYbvBT5ghNE+9yNY1nau6WUkN8UbS/ahNkHmcztE=; h=From:To:Cc:Subject:Date:From; b=fUlciLw6EEtNwdC5sNo6FVFrvfsgc0ISvdpDykm0/QvlpZnC6qs40WTbaxwR90kJv foVcsjlQ2BX1HKVWHO/SVtG7XKOMirKHTLmAwyeHXPKcTB8Zw/K5QePEPQCl9CqOvN tdQ3i3MRlHoOJTnPP7+/wJCcCX5hFQNzFIXrI223analUDecLxCfhvYT3F08L3Ucgw GSFgXImNPYeWTa2GqDzKIs+KpvOEwGxI5vECmQnCUYnCFoypD7XNqxxXFe2NDFeQT3 wvoe17Ta4MFkaqMwM7tnCbM12pIpflcgql44+LhJextOLb2VfJ4ba1YkaVPfnrDZq4 O6v1BS/mZL1KA== From: Kees Cook To: Arnd Bergmann Cc: Kees Cook , Mark Brown , "Gustavo A. R. Silva" , Paul Moore , James Morris , "Serge E. Hallyn" , linux-hardening@vger.kernel.org, linux-security-module@vger.kernel.org, =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , =?utf-8?q?G=C3=BCnt?= =?utf-8?q?her_Noack?= , linux-kernel@vger.kernel.org Subject: [PATCH] hardening: Disable GCC randstruct for COMPILE_TEST Date: Wed, 9 Apr 2025 08:11:58 -0700 Message-Id: <20250409151154.work.872-kees@kernel.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1392; i=kees@kernel.org; h=from:subject:message-id; bh=V9QuYbvBT5ghNE+9yNY1nau6WUkN8UbS/ahNkHmcztE=; b=owGbwMvMwCVmps19z/KJym7G02pJDOnf+uwet/+4NUHquhfDu+dL1vKkWZ/xZ78rfaot93OIo Ygqc6d6RykLgxgXg6yYIkuQnXuci8fb9nD3uYowc1iZQIYwcHEKwEQEDzD8r9v+trQ57IEgk69U 3qUSmy32vyYUBt3JCt65NHuvYunJIwz/lI+9n17oo8w9rVD7TNJrrr03kl099/os3JZekGuXOkW YGwA= X-Developer-Key: i=kees@kernel.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 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 Link: https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/ [1] Signed-off-by: Kees Cook Acked-by: Arnd Bergmann Acked-by: Mark Brown --- Cc: Arnd Bergmann Cc: "Gustavo A. R. Silva" Cc: Paul Moore Cc: James Morris Cc: "Serge E. Hallyn" Cc: linux-hardening@vger.kernel.org Cc: linux-security-module@vger.kernel.org --- security/Kconfig.hardening | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/Kconfig.hardening b/security/Kconfig.hardening index c17366ce8224..3fe9d7b945c4 100644 --- a/security/Kconfig.hardening +++ b/security/Kconfig.hardening @@ -344,7 +344,7 @@ config CC_HAS_RANDSTRUCT choice prompt "Randomize layout of sensitive kernel structures" - default RANDSTRUCT_FULL if COMPILE_TEST && (GCC_PLUGINS || CC_HAS_RANDSTRUCT) + default RANDSTRUCT_FULL if COMPILE_TEST && CC_HAS_RANDSTRUCT default RANDSTRUCT_NONE help If you enable this, the layouts of structures that are entirely