5.15-stable review patch. If anyone has any objections, please let me know.
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From: Wei Yang richard.weiyang@gmail.com
commit 394bfac1c7f7b701c2c93834c5761b9c9ceeebcf upstream.
Commit 8ee53820edfd ("thp: mmu_notifier_test_young") introduced mmu_notifier_test_young(), but we are passing the wrong address. 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.
[akpm@linux-foundation.org fix whitespace, per everyone] 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 Acked-by: David Hildenbrand david@redhat.com Reviewed-by: 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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/khugepaged.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1358,7 +1358,7 @@ static int khugepaged_scan_pmd(struct mm } if (pte_young(pteval) || page_is_young(page) || PageReferenced(page) || - mmu_notifier_test_young(vma->vm_mm, address)) + mmu_notifier_test_young(vma->vm_mm, _address)) referenced++; } if (!writable) {