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 Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2C9E3CD13D3 for ; Thu, 30 Apr 2026 16:38:59 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id EAC9E42B69; Thu, 30 Apr 2026 16:38:58 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id zEHsxXWuO6GK; Thu, 30 Apr 2026 16:38:56 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver= DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org D9C4442B68 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1777567136; bh=b8GHjb1ptpDV4xgqteHfTSBvpCD3p34ZaVV7CNQTalw=; h=Date:To:CC:References:From:In-Reply-To:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=iVZ2URSSk3LOylEsv9Pizhvb/F5ua/UXDm/ptu47/3wx5mD7OlzeqCcyDZSChS5Ge qiQHHxIM+f95CDKiw717oE037Ypa+GdXan2YQQ53gRGfYZQ7eOOc7YtQheW8LUq8sT zN46XBtbqMXJ3AVKNuRBxYFugGh1BGOa8A9vzN9Gx81HeLAStS3iMOIDL3i3OY5PIT 7JrMNldh/dFlcwDUQgSzxWmBH1PKqgyLULLRDfouTKpdaW5GkUPp46y6WmThVeJCyF EPTqGXnlxEflEwKYof3nufIzcTKQk57UOYBoqt8y1AujXDjMoMHOXvXk/lqtB0Duym qZAi+4z0P/0OA== Received: from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142]) by smtp4.osuosl.org (Postfix) with ESMTP id D9C4442B68; Thu, 30 Apr 2026 16:38:56 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists1.osuosl.org (Postfix) with ESMTP id 08C6218E for ; Thu, 30 Apr 2026 16:38:56 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id E2935424FB for ; Thu, 30 Apr 2026 16:38:55 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id DLwTmKJuIpD1 for ; Thu, 30 Apr 2026 16:38:55 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=198.175.65.20; helo=mgamail.intel.com; envelope-from=jacob.e.keller@intel.com; receiver= DMARC-Filter: OpenDMARC Filter v1.4.2 smtp2.osuosl.org A158140089 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org A158140089 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) by smtp2.osuosl.org (Postfix) with ESMTPS id A158140089 for ; Thu, 30 Apr 2026 16:38:54 +0000 (UTC) X-CSE-ConnectionGUID: zdrYCaoiQ2qD+NmHug+Xbw== X-CSE-MsgGUID: ROr0lurASguBUX68gxxwhg== X-IronPort-AV: E=McAfee;i="6800,10657,11772"; a="78237266" X-IronPort-AV: E=Sophos;i="6.23,208,1770624000"; d="scan'208";a="78237266" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2026 09:38:54 -0700 X-CSE-ConnectionGUID: Nbe8uZjgSiCYQK/RTUnRqQ== X-CSE-MsgGUID: ha1qKy2ZSOC0m291jMesmQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,208,1770624000"; d="scan'208";a="230279922" Received: from orsmsx903.amr.corp.intel.com ([10.22.229.25]) by fmviesa010.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2026 09:38:53 -0700 Received: from ORSMSX901.amr.corp.intel.com (10.22.229.23) by ORSMSX903.amr.corp.intel.com (10.22.229.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Thu, 30 Apr 2026 09:38:52 -0700 Received: from ORSEDG903.ED.cps.intel.com (10.7.248.13) by ORSMSX901.amr.corp.intel.com (10.22.229.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37 via Frontend Transport; Thu, 30 Apr 2026 09:38:52 -0700 Received: from BN8PR05CU002.outbound.protection.outlook.com (52.101.57.28) by edgegateway.intel.com (134.134.137.113) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Thu, 30 Apr 2026 09:38:52 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=KHS5nJCNe9ak+uXbZJoRsCc3AXMj6oFkFc7Mnva6k1Z841Ha826j/avtIoz5U3oAmVLVxvs8YztJwDrEURQaLYAfYIbtyI1CgKTLWb3CoDLwmkr15e/vp//jwSHULlZeSF3nq7T0/eCEtfiQy9VxMgmHJbQdQImdkzcrmlYbeONYG78dvkfPpQGaZKAfCzK4kpvl/A+V4p34s7st/kHvQ+xJ6V1ehCk/0qyXw3L/R9J0M1TFYIs8TE1twLedNR1ifv9moEPyYin74pscc2sHl1agl+NV2AoW1r7RmIq2WLdTjWmnFmZYRxtYBR17cFtTm0AUt0IIAWXAfD/M8boMvg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=b8GHjb1ptpDV4xgqteHfTSBvpCD3p34ZaVV7CNQTalw=; b=QnILhA1OESwZnjrGU94ScpKlRSprDQiEcJhElvGVtuaxvg56WJ36q4kihttrtKTCU18l4w9OoP7JN7YwZ7dxlLlfk09KtyUD5W2dz9yqTXiJk/hLfzQ5IcN3Rb/M5DVU0P+MXUOX+bsglBRsZaKFDB2fhMu6rCOYmbjdfmjwWlx5If6iEPaxq2eMUyvQG73plZcjHu6xjX+hoTP0aQJQcJ8Vliz141J0PWUzkbfih/p+i5t4bnrQTrzb0QQ6p5TJaVoxXZLM1WVhhBKkErSOboOcjS8z85Melu3WSep1QNNIM+tK/LWPBI/WXSO4HZk9SpxoOKpe36vRQ93gHPiiAw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Received: from DS0PR11MB7579.namprd11.prod.outlook.com (2603:10b6:8:14d::5) by CO1PR11MB4929.namprd11.prod.outlook.com (2603:10b6:303:6d::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9870.20; Thu, 30 Apr 2026 16:38:47 +0000 Received: from DS0PR11MB7579.namprd11.prod.outlook.com ([fe80::4199:4cb5:cf88:e79e]) by DS0PR11MB7579.namprd11.prod.outlook.com ([fe80::4199:4cb5:cf88:e79e%5]) with mapi id 15.20.9870.016; Thu, 30 Apr 2026 16:38:47 +0000 Message-ID: Date: Thu, 30 Apr 2026 09:38:44 -0700 User-Agent: Mozilla Thunderbird To: Larysa Zaremba , CC: Przemek Kitszel , Andrew Lunn , "David S. Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni , Joshua Hay , Willem de Bruijn , Alice Michael , , , Aleksandr Loktionov , Tony Nguyen References: <20260429074232.180528-1-larysa.zaremba@intel.com> Content-Language: en-US From: Jacob Keller In-Reply-To: <20260429074232.180528-1-larysa.zaremba@intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR02CA0002.namprd02.prod.outlook.com (2603:10b6:303:16d::10) To DS0PR11MB7579.namprd11.prod.outlook.com (2603:10b6:8:14d::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR11MB7579:EE_|CO1PR11MB4929:EE_ X-MS-Office365-Filtering-Correlation-Id: a37a2f27-aca6-41b6-08de-08dea6d6f39e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|366016|1800799024|376014|18002099003|56012099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DS0PR11MB7579.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(366016)(1800799024)(376014)(18002099003)(56012099003)(22082099003); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?UFE0bCtDb0EzSXJ5NVZ1WU9vMVUvL0xJTi8zdGZhR0xaVGc3MGRTZTlic0ZU?= =?utf-8?B?aE1tdXc0Wnh1Z0NZV3RQSjFhUnZ0QXpRQUl3L3dkS1RpQW9RdTd2TDhGZzlx?= =?utf-8?B?UzBUbkhuVXRtOFhIMVhmZHdqUWhtRlBvRXpuc1RhMW8rV1J6OGJudXpyQ0lB?= =?utf-8?B?U0pJSVowaFhWdjZ5d3ZQS3hyQ0dlcHF6dmhISDdkMUl4NllqR2RLL1Qwb3NE?= =?utf-8?B?WVBtTFo4MlNwVEpDVFk0bEdNbWR6NkhnMTQyVTBFenpCQWNqV1ExRWtudU0v?= =?utf-8?B?c1JVWnJacW93MXpZSFhNL1FOdlpnWG1tYzI4U2ZaVGZGRjFRcHVEMlBIdFNt?= =?utf-8?B?d2RRV1BXbTNWOTlhMWlMQ2pDdndKZFE4MTh3WndmOHNvTFU5VVlmUGU2YTZT?= =?utf-8?B?OXk5MldYZ1ptNTVYSmU1VlBPRUo5N3FudnpEQkhXNzFYY3l0elJnZnZoWVVW?= =?utf-8?B?by8xcllHQVJuS3d1aDBUSlhSTGdRK0ZaV2NQZ0dpRVNDL0h1OHc2MVVzVVhX?= =?utf-8?B?RGxDbFMrTVF4NXYyTmkzclkyQ1BYVzQ5MUprS1V4T3BQdlU5OWM3dFRpY2Rv?= =?utf-8?B?MTlLL0NpRmhZZUZQbzBGNHYzK0tlMTdkOXp0NHpSRGdCUDJoRmhHanAwcTNw?= =?utf-8?B?bWxZbkFUcjlsUnQvQjFybFk5amdiZGpkbnAwTjBid3FxOWxNQXQ0NnpJaS9t?= =?utf-8?B?a3VrZ2VXei94MDhKYlNwYjhicjdnWEZtNk01eUg2OHdxNWwzbVZiQ1RnV0RG?= =?utf-8?B?VWt4NXdBbThUMW9UQnl0ZUxPeXNvRzhpeGFjcFVRNFlWUGZQYzR3RXNUc2Nr?= =?utf-8?B?WUdzU082SGJLZFhpcTh4QS9udkxyeGtRaWt0NGU4NnMyQ0ZJTEg3V2tZR21o?= =?utf-8?B?dVVPUE05bnNENzJxMU96enp3d3RDdTJIdHhuM01vNlFGMGV5L2h6Ris0aUpY?= =?utf-8?B?OVkya1Y3dTd6TjUrSkNLSmhNN3VGekhiY1lhZCs4cFIxdmxYVDdaeXUzYThZ?= =?utf-8?B?Nm9OY2l2TkJMTXlMa1MxVzgyNXkydlpORUJoWm91Y3pzYitiV00wVE9qNHpS?= =?utf-8?B?T3cwY0dWMlhtRmw1NGN6bGlML1lDOVNzd1ZwNzBZdDExWWdwM3NuQU5GSjhF?= =?utf-8?B?aTR2eGx6TW5iM0x3YWpDVzBhRGdVblpSRWtmeWxSVTZza3dvaTRqMWpVMjJN?= =?utf-8?B?MTBKTUZkUC92Vm9zSHlGTDhNbzlCTUJEeFd6NHVsVU1tV2NhcW1Kb2FNdmlD?= =?utf-8?B?V1o3dmRsdkpEeHErekhBcTc2VTRrWFlEckxmTmNhQVBkekt6bGprcnJadXYx?= =?utf-8?B?VHp1RmJBWTEvUFJpSkY5aHdQdEkwVGl0QmxCYm5LaGNjbG5VYXRYUFZVb2ZC?= =?utf-8?B?WGFMK2wzcHpoaEsvbWo0TER1SWxsOUtiSVV0L0NVSWlXMXJORHZqR29CREds?= =?utf-8?B?L20zbHg5NGdZbjdRN0o2cENWQWtJQk5La1VmaEJnSWpBSHRMREhlWjU4RVlr?= =?utf-8?B?Mmc4UUhHTGhUL0RpV3hvaU1tY24zenNRY1FobThKdWxEb3hialhITk5UWjNt?= =?utf-8?B?UWc0YS9OTksvTmZqQys3OE56Q0F1YzBJd3R6MVJPN1FoTDhCZ1hwdEF4dVN3?= =?utf-8?B?aGF5NjU1UzNiTndFRDVqTTVZWUlKNGNwTGJmVjNBSktaREZ5RS9vOTRxZGNz?= =?utf-8?B?S25CRmNvZ05wcytSeWZhdjNCNmVaV1ArN2R1UXFyQWlKdExXTDJKQUM0WU5p?= =?utf-8?B?SE14SnVxeis5ZER5L2pLSE14Ly9lWUJ2ekVtZmJaK1Vya1BCdHRlWWlvUFc1?= =?utf-8?B?bVJkRXpNRFJ4cjJxOWhhWWZCVGltWGYrZFl5alhkcld0NTU1ZEJLZDM1amVY?= =?utf-8?B?THdHTnljYWowS3diQ2pqK1JldFRzWGJDOXVZQjYwR2s0THlBNC9GRTBLaEIr?= =?utf-8?B?NEY3ZmlPc3lTWHVzV1lOT0tqeHlqYm9QYUJzcUtYSUc3UlE0bXV4NFhiUkF6?= =?utf-8?B?N3d2cmhNN2djN1RMaXJ0N3B5d1NoWEh5U1lkYzZmdTJwaDRMaEtPZkdOanJH?= =?utf-8?B?aVk3cENJYjI2WFhOZTVVRzBwMjc5RE5EbWhHd2U2TklmQitUNXZZRzVwK2gz?= =?utf-8?B?MUdqcE9ISFRQSVVUdUFqZ1pnTzRSaW8vL0o1MlBPcFhMODEzSkFJWng3VUx1?= =?utf-8?B?YW1PMkloa3ZQdnJId2ErWStZMFZOUUpiZVRFaGNWK0h3WmFzbjBnbld6eURo?= =?utf-8?B?NWc4cTBLb3J2bnZxd2N5M3VXaGRicnZ3YXNxUDJ2SE5zUkpXNW5qZnNDZlZu?= =?utf-8?B?QjhRVGZHSGFrVTQ5SXEyNWxKU0VBeXRUdnN5ZmFxMmdta09XWGtyZEdFaDRi?= =?utf-8?Q?sjvESV/KLFZ91AX0=3D?= X-Exchange-RoutingPolicyChecked: pCnlUE3KKKMn3iBPazcPFy5Xt03OZ9kAuB09I7DzdRyepXul/bIuWvPUygielnJuwzHUUcceBdO//s+IMGyTQQ1sNR7OtKLvXPcP0220JUww890HDknAymBRw8Gx0oraePuLMnrkKeyhFwwUTm/N/Xghzga4khXCx/2kFCRENAX2XD5uxMxcBO78G7oPGarxhQrRC98odK6hpwZqUqon2J7+3JjDSZt7OKvd5vV/6oC6caGF3uTcvr+8JtSz56M/ctk8KurqBjTPH5L866NV2wx5SPiOmwdrQLv1Qm4f7YxMnNI1JmuEnaR1H9FTTQgMK6EpzmU59F8HvdDZOBSCxA== X-MS-Exchange-CrossTenant-Network-Message-Id: a37a2f27-aca6-41b6-08de-08dea6d6f39e X-MS-Exchange-CrossTenant-AuthSource: DS0PR11MB7579.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Apr 2026 16:38:47.5030 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UK78BW8Kqr/hg4Qzm5AoIl7dNfTLAjX8af2OnEwZxFBEyP82thKzdovY2j5Weyeihps1Encoo3WOv+/XGu6knB1zYH3IhRR6HjGTAf8T9Vs= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB4929 X-OriginatorOrg: intel.com X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777567135; x=1809103135; h=message-id:date:subject:to:cc:references:from: in-reply-to:content-transfer-encoding:mime-version; bh=Nty5e9fibnG4aqfDqdzwtDvEVZ44AoXTQJLwJ0Q5oV0=; b=Gtmy2uqeZSTpzHdOgP7KJttmZfi1UVLKiIP8BiK4GoJ+hTeJzNIqaQtX TGg0qhv18jOsdA6TX9hOQoiTIyjavw01oGWUitedjYHmKaAuEo0vukPdu /tE3sMyHKR/Ti6tHqUaGNxhdizMd3zgRlQ6/XXC81wiKD9XLsym+F0qn2 +4dyMfwOEOHLrUY6cyVK5S9ght6qk90pSDgyN9KRpfXDaWDuxhhJsGZO0 xHeA11DkDWz3XtrMA3QA5XJGTd9tcp0WXaeTbLMKeMn7d/jzZAheSL7yv pjmgkN8Y+tfF8SZcoKQ+iR7mrMwlN4+tnRXzI0WxoY13Pijr+TbdoVtTv w==; X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dmarc=pass (p=none dis=none) header.from=intel.com X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Gtmy2uqe X-Mailman-Original-Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Subject: Re: [Intel-wired-lan] [PATCH iwl-net] idpf: fix RSS LUT memcpy size X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On 4/29/2026 12:42 AM, Larysa Zaremba wrote: > Based on the following feedback from Sashiko (received for iXD phase 1 > patchset, but valid for the net tree): > > "Is the bounds check xn_params.recv_mem.iov_len < lut_buf_size sufficient? > Since lut_buf_size only represents the size of the array elements, should > this check instead verify that the payload is at least > sizeof(struct virtchnl2_rss_lut) + lut_buf_size? > > [...] > > Does memcpy copy the correct amount of data here? rss_lut_size stores the > number of 32-bit entries, not the size in bytes. Should it use > lut_buf_size or rss_data->rss_lut_size * sizeof(u32) instead?" > > After inspecting the code, it was concluded that RSS memcpy size is in fact > 4 times smaller than it has to be, since a single array entry in a u32, and > rss_data->rss_lut_size is clearly used as an array size. Required Rx buffer > size is also too small, but this is a common issue in the idpf code. > > Use a full buffer size (lut_buf_size) instead of the array length > (rss_data->rss_lut_size) when doing memcpy of RSS lookup table. > While at it, increase required Rx buffer size to a whole flex-array > containing structure instead of just the array. > > Link: https://sashiko.dev/#/patchset/20260323174052.5355-1-larysa.zaremba%40intel.com?part=8 > Fixes: 95af467d9a4e ("idpf: configure resources for RX queues") > Reviewed-by: Aleksandr Loktionov > Signed-off-by: Larysa Zaremba > --- > drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c > index be66f9b2e101..a97d2e9b54d4 100644 > --- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c > +++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c > @@ -2916,7 +2916,7 @@ int idpf_send_get_set_rss_lut_msg(struct idpf_adapter *adapter, > return -EIO; > > lut_buf_size = le16_to_cpu(recv_rl->lut_entries) * sizeof(u32); > - if (reply_sz < lut_buf_size) > + if (reply_sz < lut_buf_size + sizeof(struct virtchnl2_rss_lut)) This feels like it should be using struct_size or flex_array_size... > return -EIO; > > /* size didn't change, we can reuse existing lut buf */ > @@ -2933,7 +2933,7 @@ int idpf_send_get_set_rss_lut_msg(struct idpf_adapter *adapter, > } > > do_memcpy: > - memcpy(rss_data->rss_lut, recv_rl->lut, rss_data->rss_lut_size); > + memcpy(rss_data->rss_lut, recv_rl->lut, lut_buf_size); > > return 0; > }