diff options
| author |   Miaohe Lin <linmiaohe@huawei.com> | 2021-09-08 18:10:11 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-08 18:45:53 -0700 |
| commit | 053cfda102306a3394012f9fe2594811c34925e4 (patch) | |
| tree | a256a85bac76787f6cfd6d3759a567e8ce7bd9e4 /include | |
| parent | mm,vmscan: fix divide by zero in get_scan_count (diff) | |
| download | linux-dev-053cfda102306a3394012f9fe2594811c34925e4.tar.xz linux-dev-053cfda102306a3394012f9fe2594811c34925e4.zip | |
mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype
If it's not prepared to free unref page, the pcp page migratetype is
unset. Thus we will get rubbish from get_pcppage_migratetype() and
might list_del(&page->lru) again after it's already deleted from the list
leading to grumble about data corruption.
Link: https://lkml.kernel.org/r/20210902115447.57050-1-linmiaohe@huawei.com
Fixes: df1acc856923 ("mm/page_alloc: avoid conflating IRQs disabled with zone->lock")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions