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 68FFD22ACF3; Mon, 31 Mar 2025 14:37:06 +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=1743431826; cv=none; b=ZhQto5krsaDnDkNwcb4bCDYTrjncNvON3cL7xIM5vU6hvv0cl4FoA5DtM5/SlvpPMunk8LJoUWgfrldHcIKYBMlQvrRpiB1DpO3CDq5dQ05lpMfnK0EmznwRpwhPJt65FY9LpTvAVM3I4pIsf6RKP/WwPmgx3333WF11+DXm/qw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743431826; c=relaxed/simple; bh=nel+CNbtIcIbXhGVRK9Wmqiu+JKidiJ+yS/1506Ry7M=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jvbJlUx8rlCU0FGjmn/oIEmw8NgmMFheD0JK/Le6dNvMNzFrzEoSiZT9R1d6TlnMjp7AWCy2A55yGkuwRpuK/dFhlBIQP+QaUTzyT6srzi1aYqwdLdxsPEwRRTPwnZ3p9hfEmxaAw8Ks9vwwDxLBngqP4cTt1n3p/hmknf01yWI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VvRoCcdK; 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="VvRoCcdK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B6F9C4CEE3; Mon, 31 Mar 2025 14:37:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743431826; bh=nel+CNbtIcIbXhGVRK9Wmqiu+JKidiJ+yS/1506Ry7M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VvRoCcdKyM1YnC2sLw7PYo9EeSljwzmSUm6IOBs9F51uoW0ikGvvCqMyRi28mgbjE U3JlYr2tYH3GTXGIi5DuBZjp7Wb/pTTV2KO0FWMV+pomjIciJlATP1xL/TEauuoODc pU+QIQOq7EdJ9GF9qKmjyqt8FPxp/OczmZwpryi69pm5yH0erY5lmBOGNjmsLTPISt ZXXS1i/xOJ3AmUUja5vab3TU2tK5xh5pAx/4wYmpAKuo1h6Ec3eg5rIYWFRnytEUwv DopSbC+PFM71ttxarOSHsHaQo3NlPgTFnvnS6sdNWOysyXWb7OOvORjonbTH8Nxalt /NalOVFlD34vA== 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 5.15 5/6] xen/mcelog: Add __nonstring annotations for unterminated strings Date: Mon, 31 Mar 2025 10:36:50 -0400 Message-Id: <20250331143652.1686503-5-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250331143652.1686503-1-sashal@kernel.org> References: <20250331143652.1686503-1-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 5.15.179 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 7483a78d24251..20a3b320d1a58 100644 --- a/include/xen/interface/xen-mca.h +++ b/include/xen/interface/xen-mca.h @@ -371,7 +371,7 @@ 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