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Mon, 7 Oct 2024 06:28:36 -0700 From: Yonatan Maman To: , , , , , , , , CC: Yonatan Maman , , Subject: Date: Mon, 7 Oct 2024 16:26:58 +0300 Message-ID: <20241007132700.982800-1-ymaman@nvidia.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE31:EE_|LV3PR12MB9142:EE_ X-MS-Office365-Filtering-Correlation-Id: 16c175d8-2ceb-4e02-41b9-08dce6d3f94f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|7416014|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?egPscBrw/0QXRCScki1GBKlbVSQiicJkKkjHvTEbblF5ZJrjDbRJ9E+wWgeQ?= =?us-ascii?Q?BmzDI2D4u8UAHsIqPWcwjK1gujAaXejtRgvST7bOWeN2zZv8qVsRlaj8EGBG?= =?us-ascii?Q?j9T6p9KoiiMg3FJgvKYLv4zta17nnrLH+7c6RAr+YcgRiR0dF4dnS8hBSL9J?= =?us-ascii?Q?r+MBo9mrXD/GDo/yFmW6jdwkvlKKRsRvbrw98UbcgL3iz7KImdb7ermBQoDE?= =?us-ascii?Q?VD53VtxpDgFzVgZqUgCKk9ZG4yMNI0GLB4d1CyzNSUB2V6l9zAVB7Qtq8P70?= =?us-ascii?Q?03S5JYXgflQLOjERuvtN1HAurCKJOWWWUpZjhi8vzK0WLnGirkBb+otLJ2Bm?= =?us-ascii?Q?Af1ivp8/QRdLuMDkJCuAgUfyal+BVevgJU+S7LWtGJ4MQine5HrDDfDA9lLh?= =?us-ascii?Q?7mCXdPna1uxXU6xZchIrn+wAdMjMg1cLH31G5REzOubbEWP74ObToC98qusZ?= =?us-ascii?Q?xbjiPAC9InHjZ0JcGwoBk8t1TfEyc8cyfXRFakS3/4nccFysma2JgMfzf+I7?= =?us-ascii?Q?kmEePkvCFTAaSBciRGMBPUp2hgRo3tj2ZCqaZLMaH6ytT++JOtNvXqSlIpVR?= =?us-ascii?Q?bC4IYdJYzPRrimKiiISgFaL7Q1NYxsL7ZVoko/IT+26TcAT+1HzfWfzonwD7?= =?us-ascii?Q?uc0+drYP3UmDhLhTint80eHO8psRhD7B3qJ33N8qfYAfeCy1Ti8+zq1l9lwO?= =?us-ascii?Q?U9dGjIFUKB0ycd8KcrciB0TyW6hwmMKFg2gqNvCRMulMTyp6IH25v8k/44hK?= =?us-ascii?Q?u8eC9zKNamVvmpiK1FkpR3lM6bT8VKnx+WhXgSGf8L1DcU6JkQSaRnXlZ7FE?= =?us-ascii?Q?tUVMLargmTHCQw443hUFynrj/A/9Apd4+Mvl++eIKQNk0m4GEJNXhjoNh/ec?= =?us-ascii?Q?zN4XtIjyATRYts3/OY3QlodQskaO3d4fUj3xYDxPmU2l4+4jylUlcJX8eYDT?= =?us-ascii?Q?DxMdLfOkFA8guEwnXCkPpNncgJ74RgE2h/hN7HDYSInVyrW7pQUnQO3vZaLB?= =?us-ascii?Q?Oh3oH0GafZakv+kHtFzotu1QSb518jZ2EFQL2jcj/bsv4ffzXrXspu0K1pEO?= =?us-ascii?Q?sheTZZeZByuuUm4QD0YlOO8kAC9NBNDtm+pul9xkMr9gfBcD1+CWNaAv7z+t?= =?us-ascii?Q?c0xxswBR+nUncI1bg9ixx8WAg3vSuct5MTt3nOuz0s2h6WK+u6w7tX0/2zXL?= =?us-ascii?Q?78CGKLMc7nGMlgdqvITYam2ZOKYKHgxLcVlhcrgq8o1yM6ZPCjoUkfEpseHJ?= =?us-ascii?Q?+u1Ir/xjtZ7kDRjIFUXBjd9x4f5uz/1YY9s7P8JfKdJXShvmK/7SNQRffzvA?= =?us-ascii?Q?ErHHr3fEtg7OstcxCFhgQnaIDAViYWAQT8lP2gzSC1uZmsDDTz/vIbQlKr6t?= =?us-ascii?Q?0pqn/oQA4r6NiZrM7vXwLisSv1IV?= X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(7416014)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Oct 2024 13:28:47.3881 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 16c175d8-2ceb-4e02-41b9-08dce6d3f94f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE31.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9142 From: Yonatan Maman Date: Mon, 7 Oct 2024 14:48:26 +0300 Subject: [PATCH v2 0/2] drm/nouveau/dmem: Fix Memory Leaking and Device Channels configuration This patch series addresses two critical issues in the Nouveau driver related to device channels, error handling, and memory leaks. - Memory Leak in migrate_to_ram: The migrate_to_ram function was identified as leaking memory when a copy push command fails. This results in the function returning a dirty HIGH_USER page, which can expose sensitive information and pose a security risk. To mitigate this vulnerability, the patch ensures that a zero page is allocated for the destination page, thereby preventing memory leaks and enhancing driver security in case of failure. - Privileged Error in Copy Engine Channel: An error was observed when the nouveau_dmem_copy_one function is executed, leading to a Host Copy Engine Privileged error on channel 1. The patch resolves this by adjusting the Copy Engine channel configuration to permit privileged push commands, resolving the error. Changes since V1: - Fixed version according to Danilo Krummrich's comments. Yonatan Maman (2): nouveau/dmem: Fix privileged error in copy engine channel nouveau/dmem: Fix memory leak in `migrate_to_ram` upon copy error drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) -- 2.34.1