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Miller" , Jakub Kicinski Subject: [PATCH net] enetc: Fix uninitialized struct dim_sample field usage Date: Fri, 17 Sep 2021 13:22:06 +0300 Message-Id: <20210917102206.20616-2-claudiu.manoil@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210917102206.20616-1-claudiu.manoil@nxp.com> References: <20210917102206.20616-1-claudiu.manoil@nxp.com> Content-Type: text/plain X-ClientProxiedBy: AM0PR01CA0163.eurprd01.prod.exchangelabs.com (2603:10a6:208:aa::32) To AM9PR04MB8397.eurprd04.prod.outlook.com (2603:10a6:20b:3b5::5) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv15141.swis.ro-buh01.nxp.com (92.120.5.1) by AM0PR01CA0163.eurprd01.prod.exchangelabs.com (2603:10a6:208:aa::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.16 via Frontend Transport; Fri, 17 Sep 2021 10:22:22 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ce4e209f-e828-4f24-17cc-08d979c5098e X-MS-TrafficTypeDiagnostic: AM0PR04MB4273: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7219; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?3k0kBLdmovR5fMwa2rTGDPekb4te37hbDebtFYYBYqpJUkcyUpDenwEZpcDG?= =?us-ascii?Q?6klFOKMwIhKhT9YrwEBqYe6PCetjzzbA1BHE7gXJkoFFi+3TiMIoEdD8FKX8?= =?us-ascii?Q?Q3vp0592yG6Ot8ek9PY+e9iQK1WZGzD8czgIX7aaYfDAs/MwWkTnh7hkxGAt?= =?us-ascii?Q?urcRhoDfzlIoU6bmjSJTHTh+5dquZsDpEaMBiUGpU4RI8D4o1aA4kZbgjD7b?= =?us-ascii?Q?0B1j+HBmGzwbknPKf0ZEfkl1YPU7gt9AzxVPhF63D19b3jYvN1UfDt7EuoRQ?= =?us-ascii?Q?4ssPPqeBhjg9Pj3OBiYZZYz0yN7OHhAa1/zRM6plxvUnqp/M3CoKPYesGsU8?= =?us-ascii?Q?Q6gBAd0xPlh1KVAzasY/6QLfuAxMG494l8U15rmFmxbiMBacE11YZVh5bmqH?= =?us-ascii?Q?sQ/RKLwE1m2XDNgM6D63sBnBRND9ikkxEEzYFOjIP/ifBb8kBPt57uggQlsk?= =?us-ascii?Q?W/I6gNroTBIWixjyRfKSIzIpMAWj+nfy77uMzljCziI///PBihfhNN+4CUSB?= =?us-ascii?Q?O/JEgceZ1SPPsP8sxRkKeqh4cCSPgF9C04H9pMa/s43joJNYPcJe6IJ2N56R?= =?us-ascii?Q?8UKBKkUvzYIv/LD+1pzOsdmiZqmG/w5KqwwyzPT+84+dkKqERTyqreBHz14W?= =?us-ascii?Q?OTVR8mfj1AAWcm7VLL3NPrm+ZZ6bmt9fOYAJbEwm0ufDKyiWuDI54457X4LA?= =?us-ascii?Q?c4YQLwQMIuu6SQYs0p1DkU218tumbnOGh9RNEiNp5glCfEvUNtFqLJFSK0Ja?= =?us-ascii?Q?VJ1m6ZKE3HasuLFcr5/G3adW47byvRckh+DP+p8essQQbteIiOVuay3qemiS?= =?us-ascii?Q?JuyqgFmQOMgaIQu2OvwHnJSQJVOee925rrHCMaIai7DYeZ0b6veDAG/+9rsm?= =?us-ascii?Q?sxlUY4wyoU6PSXVePimg0znNxom8lexF1tdsgjfy6IApdNs02LF5tWmNwN8h?= =?us-ascii?Q?2JGGNOeEtz1hMYQzW/QKIOG61miL8to8Q3DDaq1UivpdW1obpXk/yUowRHeH?= =?us-ascii?Q?3tufL/7Al0AvsT+By8/k+VPP4ibktP5wRVNLsir1sBhv5VkTghziNGbKE1k8?= =?us-ascii?Q?OwjfUrYpnBB6PRBQw2Xj67pxCZlJQ35nOsx/jK7U01lwETuYEbCgVX0GrbZt?= =?us-ascii?Q?+qa4TyHaQKlKCXt3prRPwsqes1A0DKnntcL7lt4/FwTLvCIsKP+JjeHvIgZ/?= =?us-ascii?Q?pwD52v9P+cURwnDTwL6fq6W00BRZ66lwv41wPKueiNxlHvhhhgYttGcbl+ri?= =?us-ascii?Q?E2ARNc+6a08wDmYOwNMgJIjaXOTAmLFLfTDBDk/qQMtxchQQylXIFc8NJJdT?= =?us-ascii?Q?qj3cXfLJN0+s5RLpwR+smNuH?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: ce4e209f-e828-4f24-17cc-08d979c5098e X-MS-Exchange-CrossTenant-AuthSource: AM9PR04MB8397.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Sep 2021 10:22:22.7054 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Uhh0tqadZOuipuvLhrbXErr2v6KAt1xUozu3cumlKclWTAX30I90FmKaeOlKt6Ug8CdrP7Z96Eml9zkgW+NwfA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4273 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The only struct dim_sample member that does not get initialized by dim_update_sample() is comp_ctr. (There is special API to initialize comp_ctr: dim_update_sample_with_comps(), and it is currently used only for RDMA.) comp_ctr is used to compute curr_stats->cmps and curr_stats->cpe_ratio (see dim_calc_stats()) which in turn are consumed by the rdma_dim_*() API. Therefore, functionally, the net_dim*() API consumers are not affected. Nevertheless, fix the computation of statistics based on an uninitialized variable, even if the mentioned statistics are not used at the moment. Fixes: ae0e6a5d1627 ("enetc: Add adaptive interrupt coalescing") Signed-off-by: Claudiu Manoil --- drivers/net/ethernet/freescale/enetc/enetc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index 7f90c27c0e79..042327b9981f 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -419,7 +419,7 @@ static void enetc_rx_dim_work(struct work_struct *w) static void enetc_rx_net_dim(struct enetc_int_vector *v) { - struct dim_sample dim_sample; + struct dim_sample dim_sample = {}; v->comp_cnt++; -- 2.25.1