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Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2f4b523c-a22b-4f61-1ef6-08df0e18dae0 X-MS-Exchange-CrossTenant-AuthSource: IA0PR12MB8374.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Sep 2026 02:20:02.5433 (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: yJznUxq2gvjObM0DAO9UDX3F4f/V7gU6QzOYp7ZcGgZ62Qqzm+c1wzLVREmTmkEd X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH1PPF4CBE7339A X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: A295C40004 X-Stat-Signature: ykar7gw445z5f4816xpa9kgcwzg7ni5c X-Rspam-User: X-HE-Tag: 1788920408-436773 X-HE-Meta: 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 eITfXOtP 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue Sep 8, 2026 at 6:23 AM EDT, Qiqi Liu wrote: > The bulk allocation path in alloc_pages_bulk_noprof() currently misses > trace_mm_page_alloc() and kmsan_alloc_page() calls, leaving bulk-allocate= d > pages invisible to ftrace/BPF/perf and leaving KMSAN shadow memory stale. > > Add both calls in the bulk loop to match the standard allocation path, > placing them before set_page_refcounted() for consistency. The gfp mask > passed to kmsan_alloc_page() is stripped of __GFP_RECLAIM because the > bulk loop runs under the PCP spinlock, and KMSAN's stack depot allocation > must not sleep. > > Both are no-ops when their respective features are disabled, so there > is no overhead in production kernels. > > Suggested-by: Gregory Price > Signed-off-by: Qiqi Liu > --- > mm/page_alloc.c | 2 ++ > 1 file changed, 2 insertions(+) > LGTM. Reviewed-by: Zi Yan BTW, please send new versions in a new thread instead of replying to the old one. Thanks. --=20 Best Regards, Yan, Zi