From patchwork Sat Sep 7 08:18:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lucero Palau, Alejandro" X-Patchwork-Id: 13795119 Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2065.outbound.protection.outlook.com [40.107.94.65]) (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 DD0FB156227; Sat, 7 Sep 2024 08:19:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.94.65 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725697179; cv=fail; b=R+1+AcR30Qwp1heYE251otZxqKovxquMcr9jAQBLIiFWJC6CEXGpvVTJK6Uo+zSIpHsat2KyliPpCAA4dV4dY3x8Z5mP5SnBoZj2RIGMWkw9m9yGaulTGgHHaK8VWbx/9uvxb2+BSGkOuvQpKlzgr2klqQQIQDp0sCSAQWfEsJw= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725697179; c=relaxed/simple; bh=VtZYfQHONQby2EX07NAzcmrS8f8L2l7cBIJf+d1f9F8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pcxIh0gz/JyvQLE/5PO9m4LHxb55r8Y1liandG0PlDqbXx15vRne5F+PkmKC4o9k/9k9by4TTC7A15xZN/iV10x2pGqWambYonSoUcSqktecu5xby6wQNWgsk69VYwWO08v6bQ4pj7jIIt8XqobvqQRtt5evf2/eRJuJ8GHand8= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=js3R0YUD; arc=fail smtp.client-ip=40.107.94.65 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="js3R0YUD" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=j1YsBMaIgCjhO8TVJPCP5R8YhjB8g7+8v29uvNaMZt57LKCyEBGDOe+UX3EdjrxcoNBTV+ZKF2XcObRYVMSskWDYEyEbXrIMso1LtJljt0pTOHdNFtnvSrWQoiCG4lHbC//pnaiOfbmfg+gMtzuhVDKlYKNZm1icjPh14+cl171kUu1gRdI0U25IXm3WjL1bpYTGV8tIjvYtxb8Sj/IUZna8XmJAFduG+JWuqp3sN0c6Jw0KAATKexJK5RQm2zug53B1+pI+qchGrjmMnb0B7aowfnzOvRFLQ1aPKhSVb3o1akgf/pqN5Cre7QG4mr8PDY3bg98DxLahQwMyLnNlfA== 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=Mt2g3tCIlrtoekwE4xpZtAtLk0JXgrvZINw8+ZTgNXM=; b=vA4NnSFWmT7IXfdp3PDkylLERXh/KAcJo9RenKdsKhMl7TeopuDSOUXXln3tIemEfVoR+Gz3J1349CjCkImGEStN9nyfMQW+CFhHdblD2ZAWRgpt22XEyiSRKweZ7KxgR9sWFu89qhDD5TYnyLxoOhN53dZ1KjxTM2wJOKxsHodpn6zEkgOmMrcVzOPjWEM8duQbkeLu1+BXJm7c3QXA1HcQy3duVyDQyoowAvo4xxN4rVS0fPqFB04P9Jn2TA/U5Bqwskbv25FTJd5Uw1gDh8NDREU5hLbFcOkH5kxADnKApXpAfA/bTxoHj7qb+zKRDd1aUr0Tm5NPUmsvUSQr/g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Mt2g3tCIlrtoekwE4xpZtAtLk0JXgrvZINw8+ZTgNXM=; b=js3R0YUDQdit0lL+OQm8sVmaN5mpy5AwucCpKlQPTaq2jDQLbj0IBFuAOqIRfQKCgwslb/wSs2Zfg3v+bVl3QRVNW/Zw0V60/OFIGr1hqXvL1KduW2+1kqbD9nJrBuS03p4IuRTn9Ijp0zicUJHh1e1Wz8i5mh0nsLXRPbrH6zU= Received: from YQBP288CA0035.CANP288.PROD.OUTLOOK.COM (2603:10b6:c01:9d::12) by SJ2PR12MB7990.namprd12.prod.outlook.com (2603:10b6:a03:4c3::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7939.17; Sat, 7 Sep 2024 08:19:32 +0000 Received: from DS1PEPF00017097.namprd05.prod.outlook.com (2603:10b6:c01:9d:cafe::23) by YQBP288CA0035.outlook.office365.com (2603:10b6:c01:9d::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7939.18 via Frontend Transport; Sat, 7 Sep 2024 08:19:32 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by DS1PEPF00017097.mail.protection.outlook.com (10.167.18.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7918.13 via Frontend Transport; Sat, 7 Sep 2024 08:19:31 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sat, 7 Sep 2024 03:19:31 -0500 Received: from xcbalucerop41x.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39 via Frontend Transport; Sat, 7 Sep 2024 03:19:30 -0500 From: To: , , , , , , , , CC: Alejandro Lucero Subject: [PATCH v3 07/20] cxl: harden resource_contains checks to handle zero size resources Date: Sat, 7 Sep 2024 09:18:23 +0100 Message-ID: <20240907081836.5801-8-alejandro.lucero-palau@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240907081836.5801-1-alejandro.lucero-palau@amd.com> References: <20240907081836.5801-1-alejandro.lucero-palau@amd.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Received-SPF: None (SATLEXMB03.amd.com: alejandro.lucero-palau@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF00017097:EE_|SJ2PR12MB7990:EE_ X-MS-Office365-Filtering-Correlation-Id: 0b746882-f007-43ef-93f0-08dccf15ccf4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: hOrotJL/fBLEDr3FNrt8cWmVKwvrowp+N24URbl3NJkn9v8TkW2g0jLfG4CyuuFFeUdQ1lR8wTcMiM9RkYCBA6kBje5+E6uMDNWqEaGC7Zms5Y9j3OmWqF55pdgWaTmdl1Re9t6N+plvUcRHLjCDUoDmJx0LylVkHMQBclM31KVp6zS8WotX8oEClfwTuVqdLGL1/rCCnENPssXYmP58XqtqPqRG80YFpZHCqIeQWYcf0w3vSyF5kAKh3esA6+/T0UOFu//ISRcysRpy9uyswXPVowH9Oj31aDUg3ZFomjNcQoN48qo5XDMePXm3ODn7JLkQjFAU2oDsgHNbu10HvPgw6hDWNLChHwj/yZsiyBfU0n18StAHrAjZ3CKkSk1LoMW5MKJ/xZ2kw04ScXHeU225i1eack0qo2qeIRHeTM9mx1qQivPVFVwm2Le4P4p/0NpuPTH9WvxORYgnqdNR0ik3fg7O1lytI41NTnES1soa6PZfVVp0Ck4tu07F5pVEE6zH587WLDjel/G1nHkOxERlML4Vm4cqf9c53ECMk0Uzuaq4tJUyx171Zf0zLbgNEUOTWPDloRQyiWzHIfg4zs3WMcy0riCmWACDDid4ncY55mNalmE8R/oQJXNsPjtVOdv8IwN5AGVUjMCYMricFkK9wiDUFAg/kcaFTjNjs99RAmT3Iud42nVgsP473h0yzgi1oJWTyfyuqAMKc+b/bMtlLooOzGmrWEf1B2lCNS/KtFAmuHNhDPpgqhBHCN9kagceJGThxgw0f1NEOvteVdL1B5wS84gnU60DtPcDDziLc4lRX3qYkEQmJae5EEV7vkPcFiP/MoEz596A3AqEgBdltp9cYGNLUCYFOWs7E1XZLtMNZHTNuMPVPAPI9bhCvsQ9VJ0g0hudgVCA2sNUagKEw43OLZBT1UzeElrlLjig9dA1yXnjzXhHD8AC7l+RUjCpLP40dPjWQjeUIk/fCtLNuz93mZ9s8zsh7m4UqrX3AzbBVjCxNC5n+z4434SmHToOjUYptMMbNPgZUH8cwOfSuChWu8al8fjGbLNoZsfSDPUC0cSkN0eSzevqSwpSjHpSyJiCc3WyXnAeuMDOrkojNRMwRXSPwsQnSQlP+lJI49hka3vyMsrC6VpM8fjZCrpy42ia8MdTCPvKpL6ZCmQ5nz/s8zDxktfaDhDWYCjp/fUXg3wxLz00hxcoa5g9HEEb7cyWHiXLjXIXUuP7wD1jUjM13Y4L5LvF5l9oq2aL9NZoDU260Amtw6T0cqoNFOYwYBqzhQ3BoMsy0rtjVs4FL5Bnf5g58GBh1ixqRwayOislX805AN0bZiMAsNnpfg4ZomSzjJJqZnzDPKxTupQLAXjPW7RsKgrKNGnLWzEQ1X8jROF/Xfi+Xbaf9C2GiiNU8sgdh04sgQObWPtzrAMJS5FpJ33ToqMfUMOYoZ5TMrtXxdWd45oPXsUoFTPe X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(36860700013)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2024 08:19:31.8517 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0b746882-f007-43ef-93f0-08dccf15ccf4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF00017097.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB7990 From: Alejandro Lucero For a resource defined with size zero, resource_contains returns always true. Add resource size check before using it. Signed-off-by: Alejandro Lucero --- drivers/cxl/core/hdm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c index 3df10517a327..953a5f86a43f 100644 --- a/drivers/cxl/core/hdm.c +++ b/drivers/cxl/core/hdm.c @@ -327,10 +327,11 @@ static int __cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled, cxled->dpa_res = res; cxled->skip = skipped; - if (resource_contains(&cxlds->pmem_res, res)) + if ((resource_size(&cxlds->pmem_res)) && (resource_contains(&cxlds->pmem_res, res))) { cxled->mode = CXL_DECODER_PMEM; - else if (resource_contains(&cxlds->ram_res, res)) + } else if ((resource_size(&cxlds->ram_res)) && (resource_contains(&cxlds->ram_res, res))) { cxled->mode = CXL_DECODER_RAM; + } else { dev_warn(dev, "decoder%d.%d: %pr mixed mode not supported\n", port->id, cxled->cxld.id, cxled->dpa_res);