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Wed, 1 Jul 2026 17:55:40 +0000 Message-ID: <4ba1c1b2-325f-477c-b7de-c12bf72990e8@intel.com> Date: Wed, 1 Jul 2026 10:55:38 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 00/11] x86,fs/resctrl: Fix long-standing issues To: Borislav Petkov CC: , , , , , , , , , , , , , , References: <28449c4f-49e6-4342-938c-4a3699e3d682@intel.com> <20260610192137.GCaim5QSFx-YKgAzSV@fat_crate.local> <20260630225759.GDakRJ93cg21As0xnf@fat_crate.local> <20260701170917.GCakVJvegWA9R9liDV@fat_crate.local> Content-Language: en-US From: Reinette Chatre In-Reply-To: <20260701170917.GCakVJvegWA9R9liDV@fat_crate.local> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0106.namprd04.prod.outlook.com (2603:10b6:303:83::21) To SJ2PR11MB8370.namprd11.prod.outlook.com (2603:10b6:a03:540::20) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB8370:EE_|MN2PR11MB4711:EE_ X-MS-Office365-Filtering-Correlation-Id: a551704a-a35a-477c-0135-08ded799f6cc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|366016|1800799024|376014|7416014|56012099006|11063799006|4143699003|22082099003|18002099003; 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If there are no concerns with this series self then I would like >>>>> to proceed for it to be considered for inclusion. >>>> >>>> Ping me after the merge window pls. They'll have to catch the "next train" as >>>> it is too late now. >>> I confirmed that this series applies cleanly on top of v7.2-rc1. Could you please >>> consider it for inclusion during this cycle? >>> >>> Thank you very much. >> >> Sure, lemme take a look. > > So some of those look to me like urgent material that needs to go to Linus and > to stable@ now, no? I agree there are serious issues here. What prevents me from advocating for them all to go to stable is that the fixes to the intricate races required changes to resctrl's core locking flows. I absolutely tested and scrutinized these changes but having them go straight to all the stable kernels feels like a big jump to me. > Any preferences as to which ones? The fixes that do not involve locking changes are below. They could be considered for stable. 1/11: x86,fs/resctrl: Prevent out-of-bounds access while offlining CPU when SNC enabled 4/11: fs/resctrl: Free mon_data structures on rdt_get_tree() failure 5/11: fs/resctrl: Fix use-after-free during unmount 8/11: fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list Reinette