linux-kernel - [PATCH v2 1/4] bootmem: use kmemleak_free_part_phys in put_page

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Date:   Sun, 8 Oct 2023 10:33:14 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Patrick Wang <patrick.wang.shcn@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH v2 1/4] bootmem: use kmemleak_free_part_phys in put_page_bootmem

Since kmemleak_alloc_phys() rather than kmemleak_alloc() was called from
memblock_alloc_range_nid(), kmemleak_free_part_phys() should be used to
delete kmemleak object in put_page_bootmem(). In debug mode, there are
following warning:

 kmemleak: Partially freeing unknown object at 0xffff97345aff7000 (size 4096)

Fixes: dd0ff4d12dd2 ("bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem")
Signed-off-by: Liu Shixin <liushixin2@...wei.com>
Acked-by: Catalin Marinas <catalin.marinas@....com>
---
 mm/bootmem_info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
index b1efebfcf94b..fa7cb0c87c03 100644
--- a/mm/bootmem_info.c
+++ b/mm/bootmem_info.c
@@ -34,7 +34,7 @@ void put_page_bootmem(struct page *page)
 		ClearPagePrivate(page);
 		set_page_private(page, 0);
 		INIT_LIST_HEAD(&page->lru);
-		kmemleak_free_part(page_to_virt(page), PAGE_SIZE);
+		kmemleak_free_part_phys(PFN_PHYS(page_to_pfn(page)), PAGE_SIZE);
 		free_reserved_page(page);
 	}
 }
-- 
2.25.1