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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Q+ykvJDtu6G08dX/EBUEe6V5w/mayVHcB6bPeQsQ3YwLQ4fSfaSEUNJD9ttk?= =?us-ascii?Q?UematsUf1Ghw/TMUxnsxP2BtsQy9t1ibN5ilKUSDtNEo1UBDXSQUKe6v0qz4?= =?us-ascii?Q?NpnEnuRqo0UhZXy4SG5iSVOM33uk3tgSjS/a0xqYdPFLDyE5gp/G093JPvoV?= =?us-ascii?Q?BL1GY1rlmpw3LvKl9zVuvLpo82PQMIrPVlJ70gN8C5mIw/96snizxORQfb1x?= =?us-ascii?Q?6q4Wep2xwqp6BqLCB499oFyoz7q8Xh3KuOL2ZIkthn54Cr+DhTQeLcO7YIQq?= =?us-ascii?Q?TJvykTOgi0rGv+JhpQAG7rtXJohBZTZCefH7balgzdE7kPifkuCzf2JEpjr+?= =?us-ascii?Q?gqLFQ8E5UVr50KyBjymuTsBKWcT091mshk2XkgqHohja5UKLbZ90PdmcXkTS?= =?us-ascii?Q?o4YBaA6ArILKuKulHLnQeVolCFpEGDWLT/hKwazgCwGOCn80xmB4yKHPXwI+?= =?us-ascii?Q?d/ugcNXourBBkvD6ef4vdjJH7uEHLflxlgjeWXQ+GTQeccNLhEGgjVwDpvzT?= =?us-ascii?Q?PwJ0qZXPSKAnozqIlLlyBPeNUUvw3Yzn67VDNXCV3YyPyEUn+IaeqOqfQWeH?= =?us-ascii?Q?SGh3lq7SGdlSQQ2zBLw75aSzplvk40xf1PSFq7vaYFoCYbW9Vm5HuefQf+5B?= =?us-ascii?Q?N8YYcWaaZ3USVrihOkDUaB0uXS5+97K3tEsC64jHKM22d9G43RyeuqF8AmOW?= =?us-ascii?Q?bZ5Ga6kxhdVpejOBELlkC4RjS1xm3V97eKhJITZGp+Oh9AtD9wE2USGV9s78?= =?us-ascii?Q?NcW69AvCLg11FS/LtuD17UJ2ryWKU2oHyCf7wSCvemQqf+7tCnmBM5IXdHuh?= =?us-ascii?Q?mlh16L0pfIVWZFqsBTpJQ22Q+LVY6PZnBXDfbPm8lAsz1o0oTVJj9ucPoRT2?= =?us-ascii?Q?JddXocWH6f6ckojfsjOWgjELiFnuTlmEc8LEBebHALfC61vT7FtuL1scetUo?= =?us-ascii?Q?uu0ArUm7RaCGfGZRIL7PzkNsoSBRMTUNBvJ9n70BXjk3B01Qlts5kAjOQibC?= =?us-ascii?Q?35z1D4P2oR5owwKx2Cns0qS8NoszLIkKPUyY0ftUCt5aXAOHCPo7ychiSfaR?= =?us-ascii?Q?agOFL/ygJfp3U1z/Tse/2CbMNfkRADjfIZGqm7mriYvKxWN5affPPssz/gml?= =?us-ascii?Q?cZG9LWFN8kgrwqyqdv2MTG7d/7PHDXFqZg8vBwtxlkwzYwDlyaht6c0tyOeD?= =?us-ascii?Q?gzL1+18DZPIqUVSZEAgfMbrEjEoIdsYrExN/Z/TSZX9ATbf/MCKW4sCeRJUs?= =?us-ascii?Q?hA+oEIq9jCaMxeKLf8Y7XwepQ9p8gH8zxa7sHNCdH0iolCBHvMLyoFGoF49O?= =?us-ascii?Q?0msmXxFDV6zGdHntS1RQGSiUi2bkoA9ozQ7WJcw4PwCwupXcgnDZuKoLqnmc?= =?us-ascii?Q?vEArCUgTDZiQfNx2nFwbbn7U+fEXReQmbHjDfaZzXM8+6xd1UldIqc2DHGKN?= =?us-ascii?Q?JPUHPKYtm87epxbCd9By8MkGaJhIQG+JKHKgW920KvjgoqNqqa0pmShVDTNm?= =?us-ascii?Q?ulbXOVGqvjfCO4Q62UKwXepPcvCZr4roL5GeB1P7RgSWp+x228JlxOedOMw+?= =?us-ascii?Q?jIN1GD65Vql8MAw7HE1mmKG+KEs2Ed8o5X75+bLb9+hu/aivEVDgH74HgXrz?= =?us-ascii?Q?DDTX3wpZ2AaCQrJXH17WLFT0WEExU2JnEIpJsW6U/tsXUwlgNNtNY23SmKmW?= =?us-ascii?Q?/LfoIXaEDAA1JjIleSvs0Z2wCnkndtSgnYLMQ9y5g5ekSWqi?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: fcbf8d93-81af-41da-9036-08df41beea38 X-MS-Exchange-CrossTenant-AuthSource: IA0PR12MB8374.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Nov 2026 19:47:14.0262 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: m8rKi8yJRO7PpLgThwHAsF1Wi9boFSwDKXLYqY2ipSG4H746EUOexxJTSSQsbPWv X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4234 On 13 Nov 2026, at 14:26, Gregory Price (Meta) wrote: > apply_policy_zone() assumes that policy->nodes intersects N_MEMORY, so > it reads a bind policy with no N_HIGH_MEMORY node as movable-only. > > On systems with CONFIG_CPUSETS=n, nothing rebinds policies when memory > is removed, so offlining all memory on the nodes a bind policy names > leaves it with none. The policy is then treated as movable-only, and > movable allocations are restricted to nodes without memory. > > This results in allocations failures, a VM_FAULT_OOM leak, and then > an infinitely retrying fault that hangs the process. > > page allocation failure: order:0, mode:0x140dca ... nodemask=2 > Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF > > Ignore a bind policy whose nodes have no memory. policy_nodemask() > already ignores a bind policy that does not intersect the cpuset. > This covers hugetlb's policy_mbind_nodemask() as well. > > If the nodes regain memory, the policy applies again. > > CPUSETS=n with HOTREMOVE=y is unlikely a common configuration, so this > isn't marked for stable. Also no Fixes? > > Signed-off-by: Gregory Price (Meta) > --- > mm/mempolicy.c | 4 ++++ > 1 file changed, 4 insertions(+) > LGTM. Reviewed-by: Zi Yan Best Regards, Yan, Zi