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Mon, 7 Nov 2022 08:22:35 -0800 Received: from yaviefel (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Mon, 7 Nov 2022 08:22:34 -0800 References: <202211072213.KSrsyiuE-lkp@intel.com> User-agent: mu4e 1.6.6; emacs 28.1 From: Petr Machata To: Daniel Machon CC: , Linux Memory Management List , Paolo Abeni Subject: Re: [linux-next:master 4744/6155] net/dcb/dcbnl.c:1230:1: warning: the frame size of 1244 bytes is larger than 1024 bytes Date: Mon, 7 Nov 2022 17:18:25 +0100 In-Reply-To: <202211072213.KSrsyiuE-lkp@intel.com> Message-ID: <87y1smpwe0.fsf@nvidia.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.126.230.35] X-ClientProxiedBy: rnnvmail201.nvidia.com (10.129.68.8) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT052:EE_|DM6PR12MB4436:EE_ X-MS-Office365-Filtering-Correlation-Id: c14e2f37-7ed8-4692-89e0-08dac0dc5077 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Nov 2022 16:22:49.9664 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c14e2f37-7ed8-4692-89e0-08dac0dc5077 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT052.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4436 kernel test robot writes: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: d8e87774068af213ab5b058b1b114dc397b577aa > commit: 6182d5875c330a5a611687caa05f47752455720c [4744/6155] net: dcb: add new apptrust attribute > config: i386-buildonly-randconfig-r006-20221107 > compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 > reproduce (this is a W=1 build): > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6182d5875c330a5a611687caa05f47752455720c > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout 6182d5875c330a5a611687caa05f47752455720c > # save the config file > mkdir build_dir && cp config build_dir/.config > make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/dcb/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot > > All warnings (new ones prefixed by >>): > > net/dcb/dcbnl.c: In function 'dcbnl_ieee_fill': >>> net/dcb/dcbnl.c:1230:1: warning: the frame size of 1244 bytes is larger than 1024 bytes [-Wframe-larger-than=] The on-stack array that was added is pushing things: > 6182d5875c330a Daniel Machon 2022-11-01 1170 if (ops->dcbnl_getapptrust) { > 6182d5875c330a Daniel Machon 2022-11-01 1171 u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; > 6182d5875c330a Daniel Machon 2022-11-01 1172 int nselectors, i; > 6182d5875c330a Daniel Machon 2022-11-01 1173 > 6182d5875c330a Daniel Machon 2022-11-01 1174 apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE); > 6182d5875c330a Daniel Machon 2022-11-01 1175 if (!apptrust) > 6182d5875c330a Daniel Machon 2022-11-01 1176 return -EMSGSIZE; > 6182d5875c330a Daniel Machon 2022-11-01 1177 > 6182d5875c330a Daniel Machon 2022-11-01 1178 err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors); > 6182d5875c330a Daniel Machon 2022-11-01 1179 if (!err) { > 6182d5875c330a Daniel Machon 2022-11-01 1180 for (i = 0; i < nselectors; i++) { > 6182d5875c330a Daniel Machon 2022-11-01 1181 enum ieee_attrs_app type = > 6182d5875c330a Daniel Machon 2022-11-01 1182 dcbnl_app_attr_type_get(selectors[i]); > 6182d5875c330a Daniel Machon 2022-11-01 1183 err = nla_put_u8(skb, type, selectors[i]); > 6182d5875c330a Daniel Machon 2022-11-01 1184 if (err) { > 6182d5875c330a Daniel Machon 2022-11-01 1185 nla_nest_cancel(skb, apptrust); > 6182d5875c330a Daniel Machon 2022-11-01 1186 return err; > 6182d5875c330a Daniel Machon 2022-11-01 1187 } > 6182d5875c330a Daniel Machon 2022-11-01 1188 } > 6182d5875c330a Daniel Machon 2022-11-01 1189 } > 6182d5875c330a Daniel Machon 2022-11-01 1190 > 6182d5875c330a Daniel Machon 2022-11-01 1191 nla_nest_end(skb, apptrust); > 6182d5875c330a Daniel Machon 2022-11-01 1192 } I think this should either be converted to dynamic allocation, or the array size should be reduced to number of unique selectors, instead of the value of the highest selector.