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| author | SeongJae Park <sj@kernel.org> | 2023-07-29 20:37:32 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-04 13:03:43 -0700 |
| commit | 5f1fc67f2cb8d3035d3acd273b48b97835af8afd (patch) | |
| tree | 9410215fff8219d52a03761c4d2350d0b927f6fa /tools | |
| parent | f8654743a0e6909dc634cbfad6db6816f10f3399 (diff) | |
| download | lwn-5f1fc67f2cb8d3035d3acd273b48b97835af8afd.tar.gz lwn-5f1fc67f2cb8d3035d3acd273b48b97835af8afd.zip | |
mm/damon/core: initialize damo_filter->list from damos_new_filter()
damos_new_filter() is not initializing the list field of newly allocated
filter object. However, DAMON sysfs interface and DAMON_RECLAIM are not
initializing it after calling damos_new_filter(). As a result, accessing
uninitialized memory is possible. Actually, adding multiple DAMOS filters
via DAMON sysfs interface caused NULL pointer dereferencing. Initialize
the field just after the allocation from damos_new_filter().
Link: https://lkml.kernel.org/r/20230729203733.38949-2-sj@kernel.org
Fixes: 98def236f63c ("mm/damon/core: implement damos filter")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions