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| author | Liu Shixin <liushixin2@huawei.com> | 2022-08-19 17:40:05 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-08-28 14:02:45 -0700 |
| commit | dd0ff4d12dd284c334f7e9b07f8f335af856ac78 (patch) | |
| tree | c12441a2276f92c26a42d9d2055111245903a8f2 | |
| parent | 550842cc60987b269e31b222283ade3e1b6c7fc8 (diff) | |
| download | linux-stable-dd0ff4d12dd284c334f7e9b07f8f335af856ac78.tar.gz linux-stable-dd0ff4d12dd284c334f7e9b07f8f335af856ac78.tar.bz2 linux-stable-dd0ff4d12dd284c334f7e9b07f8f335af856ac78.zip | |
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
The vmemmap pages is marked by kmemleak when allocated from memblock.
Remove it from kmemleak when freeing the page. Otherwise, when we reuse
the page, kmemleak may report such an error and then stop working.
kmemleak: Cannot insert 0xffff98fb6eab3d40 into the object search tree (overlaps existing)
kmemleak: Kernel memory leak detector disabled
kmemleak: Object 0xffff98fb6be00000 (size 335544320):
kmemleak: comm "swapper", pid 0, jiffies 4294892296
kmemleak: min_count = 0
kmemleak: count = 0
kmemleak: flags = 0x1
kmemleak: checksum = 0
kmemleak: backtrace:
Link: https://lkml.kernel.org/r/20220819094005.2928241-1-liushixin2@huawei.com
Fixes: f41f2ed43ca5 (mm: hugetlb: free the vmemmap pages associated with each HugeTLB page)
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/bootmem_info.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c index f18a631e7479..b1efebfcf94b 100644 --- a/mm/bootmem_info.c +++ b/mm/bootmem_info.c @@ -12,6 +12,7 @@ #include <linux/memblock.h> #include <linux/bootmem_info.h> #include <linux/memory_hotplug.h> +#include <linux/kmemleak.h> void get_page_bootmem(unsigned long info, struct page *page, unsigned long type) { @@ -33,6 +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); free_reserved_page(page); } } |