]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit
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)
committerStefan Bader <stefan.bader@canonical.com>
Fri, 7 Oct 2022 08:39:33 +0000 (10:39 +0200)
commit10e7d4e60d18f13c6ec82bbcbaa6791efb0ddd1c
treed8c0365d4d0bf05b1236d3091150458f67a2a015
parent4dcb50acbfa31a375d817302ca65802db9647180
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem

BugLink: https://bugs.launchpad.net/bugs/1991717
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>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
mm/bootmem_info.c