Tao Zeng f95a3c8267 mm: fix compound page header problem [3/3] ...

PD#SWPL-131211

Problem:
kernel crash in check_page_to_cma

Solution:
The problem is that page_mapping function returns a invalid mapping
pointer, when a compound page is building while a compaction is doing
at same time, there will have a risk of compound page status checking.
page->mapping is set to TAIL_MAPPING first then set compound header.
But check_page_to_cma don't check real status of page, which caused
panic

Verify:
local

Change-Id: Ie707573beb1904d4ecf76acd026a7aba4dd07e80
Signed-off-by: Tao Zeng <tao.zeng@amlogic.com>

2023-08-31 20:23:53 -07:00

..

common14-5.15

mm: fix compound page header problem [3/3]

2023-08-31 20:23:53 -07:00

auto_patch.sh

patch: support auto lunch's patch [1/3]

2023-05-31 20:54:14 -07:00