bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
authorLiu Shixin <liushixin2@huawei.com>
Fri, 19 Aug 2022 09:40:05 +0000 (17:40 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 31 Aug 2022 15:16:48 +0000 (17:16 +0200)
commit16a12ee619e39e8112f61b603255c16b73b6264b
treed47edb19ce8322364c678d4cdaee4a41de5b83fc
parent9227599cd987704c6dfc94b9929fc4a21ed1c4ab
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem

commit dd0ff4d12dd284c334f7e9b07f8f335af856ac78 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mm/bootmem_info.c