The patch titled
Subject: mm/page_reporting: fix MAX_ORDER usage in page_reporting_register()
has been added to the -mm mm-unstable branch. Its filename is
mm-page_reporting-fix-max_order-usage-in-page_reporting_register.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_reporting-fix-max_order-usage-in-page_reporting_register.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: mm/page_reporting: fix MAX_ORDER usage in page_reporting_register()
Date: Wed, 15 Mar 2023 14:31:30 +0300
MAX_ORDER is not inclusive: the maximum allocation order buddy allocator
can deliver is MAX_ORDER-1.
Fix MAX_ORDER usage in page_reporting_register().
Link: https://lkml.kernel.org/r/20230315113133.11326-8-kirill.shutemov@xxxxxxxxxxxxxxx
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_reporting.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page_reporting.c~mm-page_reporting-fix-max_order-usage-in-page_reporting_register
+++ a/mm/page_reporting.c
@@ -370,7 +370,7 @@ int page_reporting_register(struct page_
*/
if (page_reporting_order == -1) {
- if (prdev->order > 0 && prdev->order <= MAX_ORDER)
+ if (prdev->order > 0 && prdev->order < MAX_ORDER)
page_reporting_order = prdev->order;
else
page_reporting_order = pageblock_order;
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
sparc-mm-fix-max_order-usage-in-tsb_grow.patch
um-fix-max_order-usage-in-linux_main.patch
floppy-fix-max_order-usage.patch
drm-i915-fix-max_order-usage-in-i915_gem_object_get_pages_internal.patch
genwqe-fix-max_order-usage.patch
perf-core-fix-max_order-usage-in-rb_alloc_aux_page.patch
mm-page_reporting-fix-max_order-usage-in-page_reporting_register.patch
mm-slub-fix-max_order-usage-in-calculate_order.patch
iommu-fix-max_order-usage-in-__iommu_dma_alloc_pages.patch
mm-treewide-redefine-max_order-sanely.patch
