From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0249C072B1 for ; Thu, 30 May 2019 04:34:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6D3725778 for ; Thu, 30 May 2019 04:34:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559190867; bh=2lL2AAseHZKVdtgWO29XLWOxL9dLpWAGdkuCIEIeyiA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Ls0S5OjFMv+UfT+V77WHkZBrPqbglQi/pYyRIvVnXDeDmsaBaAIwAtMpgReeBa5hr taL+IxJcksHg8a/tNo2kZlXg154xbv6Bnsgb+vPFEV9gU6u07ZoSA+8Uggrue1oagu uQZqAFs01cjO25TrCLRyZUlNtI7AFB3EpCuBHryg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388319AbfE3Ee0 (ORCPT ); Thu, 30 May 2019 00:34:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:58510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728576AbfE3DNY (ORCPT ); Wed, 29 May 2019 23:13:24 -0400 Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 423302454E; Thu, 30 May 2019 03:13:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559186004; bh=2lL2AAseHZKVdtgWO29XLWOxL9dLpWAGdkuCIEIeyiA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lugpBrlwMPhUR7UYFN6+sS0eJybB173ptlhzu9k2lR/66aseZGtRTR2yHJ311j96E aSD3bab7JINVuwloNz+kxXLacWYaROsNOdMhRq+K+w0qK2ha0H3KvPFbteFzahEN20 L7PgMhun4aoYiMS7tKoRgK69dAS4zAsKMPJXAXts= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sameeh Jubran , "David S. Miller" , Sasha Levin Subject: [PATCH 5.0 057/346] net: ena: gcc 8: fix compilation warning Date: Wed, 29 May 2019 20:02:10 -0700 Message-Id: <20190530030543.921946525@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030540.363386121@linuxfoundation.org> References: <20190530030540.363386121@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit f913308879bc6ae437ce64d878c7b05643ddea44 ] GCC 8 contains a number of new warnings as well as enhancements to existing checkers. The warning - Wstringop-truncation - warns for calls to bounded string manipulation functions such as strncat, strncpy, and stpncpy that may either truncate the copied string or leave the destination unchanged. In our case the destination string length (32 bytes) is much shorter than the source string (64 bytes) which causes this warning to show up. In general the destination has to be at least a byte larger than the length of the source string with strncpy for this warning not to showup. This can be easily fixed by using strlcpy instead which already does the truncation to the string. Documentation for this function can be found here: https://elixir.bootlin.com/linux/latest/source/lib/string.c#L141 Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Sameeh Jubran Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index a6eacf2099c30..41c1c9acb3246 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2292,7 +2292,7 @@ static void ena_config_host_info(struct ena_com_dev *ena_dev, host_info->bdf = (pdev->bus->number << 8) | pdev->devfn; host_info->os_type = ENA_ADMIN_OS_LINUX; host_info->kernel_ver = LINUX_VERSION_CODE; - strncpy(host_info->kernel_ver_str, utsname()->version, + strlcpy(host_info->kernel_ver_str, utsname()->version, sizeof(host_info->kernel_ver_str) - 1); host_info->os_dist = 0; strncpy(host_info->os_dist_str, utsname()->release, -- 2.20.1