From nobody Wed Oct 8 00:45:53 2025 Received: from out-183.mta0.migadu.com (out-183.mta0.migadu.com [91.218.175.183]) (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 9A221289E23 for ; Thu, 3 Jul 2025 17:21:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.183 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751563263; cv=none; b=oTXrGRinr1Njqpyk0lcyTVWz9q+U1Jr/fQxMkl3VNGl88eQzAlsroQgZauNDdGriOlmdZb+qIQqwRktxQhKJM5gxbeqR9pfSflSaD1VCKOrujqTusBpvXg1whJm1w/skQ/Twc3WbVU9+7igvDWW81AsMfkw1bhUoM0136joyF9w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751563263; c=relaxed/simple; bh=vPDISl6g5NAEE77KMXZjR8RjrfgvmCsHGDrvYGyHqjo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=NlG37Ud8K/W2Bxo+e0X5m5uffpzqoIwux5PPrYThlC3SAHkx2F6gZ/Z34u1IVWxsaFPylBPs4YQzcFiVUIGukcZdrO/HBCeEvchAarKugabA7CDU+YtD9vWyfMDxggf0ZAn99c829FwDM1aYntnBXVNXlJ6R5mekwfZ7WrVBwmQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=he8awb9p; arc=none smtp.client-ip=91.218.175.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="he8awb9p" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1751563249; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=rBaauVU/2eqVg/IBff0Zf0cOYUFCWODEuFnTMq8cS+Q=; b=he8awb9plbq9DFTpyr14nwlbX5WEp2zlR5FdoAVvjO8oTV+9deiVZpszeN3Jo5B7eUsr71 5KC5jP7TrP0eTfnydp/z691c6B2T9ccxDtBS1fiG/goVl3P45469tzlVxuShl7GWOM08FJ wj37Y+m8bkD0SRcoAgr8SKTwRUgDWkU= From: Thorsten Blum To: Herbert Xu , "David S. Miller" , Nick Terrell , David Sterba Cc: linux-hardening@vger.kernel.org, Thorsten Blum , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] crypto: zstd - replace zero-length array with flexible array member Date: Thu, 3 Jul 2025 19:19:34 +0200 Message-ID: <20250703171933.253654-2-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Replace the deprecated zero-length array with a modern flexible array member in the struct zstd_ctx. No functional changes intended. Link: https://github.com/KSPP/linux/issues/78 Signed-off-by: Thorsten Blum Reviewed-by: Kees Cook --- crypto/zstd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/zstd.c b/crypto/zstd.c index 657e0cf7b952..c489976c3e8b 100644 --- a/crypto/zstd.c +++ b/crypto/zstd.c @@ -25,7 +25,7 @@ struct zstd_ctx { zstd_dctx *dctx; size_t wksp_size; zstd_parameters params; - u8 wksp[0] __aligned(8); + u8 wksp[] __aligned(8); }; =20 static DEFINE_MUTEX(zstd_stream_lock); --=20 2.50.0