From mboxrd@z Thu Jan 1 00:00:00 1970 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 E0B7821C18C; Mon, 31 Mar 2025 14:37:39 +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=1743431860; cv=none; b=miyZ1tK3WodvmLwgPtfMw6Tppz61tPIX4fF7t07h4y8wMIcwFCNMMuvqlyQ8W3lxqp+9MxRObEBP1G10SaVgqfB/yeIfLTAiq230ZiROHVZHoaKv5ris8HJkIZpftczPEsc/gBIuckAKkDRqzga1Gqsn8ljbKnczf0cinBNnnlc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743431860; c=relaxed/simple; bh=EBUZ7/lyZdvglHul0hI2jt6KLmQWNLkkH/t966Me0jY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=VdbW4t787WGMwxq5zf92Mj1pgtt37d8PLXL4T0D5LubXqQLhbU9XRjxXVDiJ71PqqRCti4fztd0cYrwkBeNaEmOAFdPI1DIODT7yMNsvFBQxlwA0GcN/HjnZgX24rr5JK8n7ivFZKeDNLTckj0C09AyUUd8Z3Jzv83bv7tyhfzA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RDY6Hbny; 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="RDY6Hbny" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 737FDC4CEE9; Mon, 31 Mar 2025 14:37:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743431859; bh=EBUZ7/lyZdvglHul0hI2jt6KLmQWNLkkH/t966Me0jY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RDY6HbnyXjQoLmyZkPm2+mfwJkco58naAILC2MDsbzt8IB2BnM4aEJpsbbW2pduBX 21ZMwTJ8AfcHxqWxb4J7ZATNPL9Ss8xlSIT6z8KTcIqhBGaXRwXFQ0WzhJooNcl7YR qGTkMfmkHWaKjJZWOOnytMB9nEJJQidfqAiQnOvIdAOBU2pmxXrQijAP2h3RlKjWc5 buNtXfsalOzE9fNZ8KnBaBnHY2Y4qZuWHlPgDjjlHc4euscoADPu8ZEzY6Wv6h1B37 fX/r6H2BUykYWFiXVOKYgFCpCLlrH3VLQkFPZQwSamjuQE5hV+VNpo6+FOHS7r3zRu TBRL+UCzQyprg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kees Cook , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , xen-devel@lists.xenproject.org, Sasha Levin Subject: [PATCH AUTOSEL 5.4 4/5] xen/mcelog: Add __nonstring annotations for unterminated strings Date: Mon, 31 Mar 2025 10:37:25 -0400 Message-Id: <20250331143728.1686696-4-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250331143728.1686696-1-sashal@kernel.org> References: <20250331143728.1686696-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.291 Content-Transfer-Encoding: 8bit From: Kees Cook [ Upstream commit 1c3dfc7c6b0f551fdca3f7c1f1e4c73be8adb17d ] When a character array without a terminating NUL character has a static initializer, GCC 15's -Wunterminated-string-initialization will only warn if the array lacks the "nonstring" attribute[1]. Mark the arrays with __nonstring to and correctly identify the char array as "not a C string" and thereby eliminate the warning. Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1] Cc: Juergen Gross Cc: Stefano Stabellini Cc: Oleksandr Tyshchenko Cc: xen-devel@lists.xenproject.org Signed-off-by: Kees Cook Acked-by: Juergen Gross Message-ID: <20250310222234.work.473-kees@kernel.org> Signed-off-by: Juergen Gross Signed-off-by: Sasha Levin --- include/xen/interface/xen-mca.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/xen/interface/xen-mca.h b/include/xen/interface/xen-mca.h index 73a4ea714d937..5db6116cd042c 100644 --- a/include/xen/interface/xen-mca.h +++ b/include/xen/interface/xen-mca.h @@ -365,7 +365,7 @@ struct xen_mce { #define XEN_MCE_LOG_LEN 32 struct xen_mce_log { - char signature[12]; /* "MACHINECHECK" */ + char signature[12] __nonstring; /* "MACHINECHECK" */ unsigned len; /* = XEN_MCE_LOG_LEN */ unsigned next; unsigned flags; -- 2.39.5