+ mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young.patch added to mm-hotfixes-unstable branch

+ mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/khugepaged: fix the address passed to notifier on testing young
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Wei Yang <richard.weiyang@gmail.com>
Subject: mm/khugepaged: fix the address passed to notifier on testing young
Date: Fri, 22 Aug 2025 06:33:18 +0000

Commit 8ee53820edfd ("thp: mmu_notifier_test_young") introduced
mmu_notifier_test_young(), but we should pass the address need to test. 
In xxx_scan_pmd(), the actual iteration address is "_address" not
"address".  We seem to misuse the variable on the very beginning.

Change it to the right one.

Link: https://lkml.kernel.org/r/20250822063318.11644-1-richard.weiyang@gmail.com
Fixes: 8ee53820edfd ("thp: mmu_notifier_test_young")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/khugepaged.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/khugepaged.c~mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young
+++ a/mm/khugepaged.c
@@ -1418,7 +1418,7 @@ static int hpage_collapse_scan_pmd(struc
 		if (cc->is_khugepaged &&
 		    (pte_young(pteval) || folio_test_young(folio) ||
 		     folio_test_referenced(folio) || mmu_notifier_test_young(vma->vm_mm,
-								     address)))
+								     _address)))
 			referenced++;
 	}
 	if (!writable) {
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are

mm-khugepaged-fix-the-address-passed-to-notifier-on-testing-young.patch
mm-rmap-do-__folio_mod_stat-in-__folio_add_rmap.patch
selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch
mm-rmap-not-necessary-to-mask-off-folio_pages_mapped.patch
mm-rmap-use-folio_large_nr_pages-when-we-are-sure-it-is-a-large-folio.patch
selftests-mm-put-general-ksm-operation-into-vm_util.patch
selftests-mm-test-that-rmap-behave-as-expected.patch
mm-khugepaged-use-list_xxx-helper-to-improve-readability.patch