The patch titled
Subject: bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
bootmem-remove-the-vmemmap-pages-from-kmemleak-in-free_bootmem_page.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/bootmem-remove-the-vmemmap-pages-from-kmemleak-in-free_bootmem_page.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: Liu Shixin <liushixin2@xxxxxxxxxx>
Subject: bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page
Date: Tue, 4 Jul 2023 18:19:42 +0800
commit dd0ff4d12dd2 ("bootmem: remove the vmemmap pages from kmemleak in
put_page_bootmem") fix an overlaps existing problem of kmemleak. But the
problem still existed when HAVE_BOOTMEM_INFO_NODE is disabled, because in
this case, free_bootmem_page() will call free_reserved_page() directly.
Fix the problem by adding kmemleak_free_part() in free_bootmem_page() when
HAVE_BOOTMEM_INFO_NODE is disabled.
Link: https://lkml.kernel.org/r/20230704101942.2819426-1-liushixin2@xxxxxxxxxx
Fixes: f41f2ed43ca5 ("mm: hugetlb: free the vmemmap pages associated with each HugeTLB page")
Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx>
Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/bootmem_info.h | 2 ++
1 file changed, 2 insertions(+)
--- a/include/linux/bootmem_info.h~bootmem-remove-the-vmemmap-pages-from-kmemleak-in-free_bootmem_page
+++ a/include/linux/bootmem_info.h
@@ -3,6 +3,7 @@
#define __LINUX_BOOTMEM_INFO_H
#include <linux/mm.h>
+#include <linux/kmemleak.h>
/*
* Types for free bootmem stored in page->lru.next. These have to be in
@@ -59,6 +60,7 @@ static inline void get_page_bootmem(unsi
static inline void free_bootmem_page(struct page *page)
{
+ kmemleak_free_part(page_to_virt(page), PAGE_SIZE);
free_reserved_page(page);
}
#endif
_
Patches currently in -mm which might be from liushixin2@xxxxxxxxxx are
bootmem-remove-the-vmemmap-pages-from-kmemleak-in-free_bootmem_page.patch
