Commit 1292c0ecb1ca ("mm/damon/core: validate ranges in damon_set_regions()") disallowed passing zero or negative size input ranges to damon_set_regions(). Add kunit test cases for those inputs. Signed-off-by: SJ Park --- mm/damon/tests/core-kunit.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index befc1196d6d60..ac15393a7935b 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -592,6 +592,20 @@ static void damon_test_set_regions(struct kunit *test) {.start = 25, .end = 40}, {.start = 44, .end = 50}, }, 3, 0); + /* Zero size regions should return -EINVAL. */ + damon_test_set_regions_for(test, + (struct damon_addr_range[]){}, 0, + (struct damon_addr_range[]){ + {.start = 42, .end = 42}, + }, 1, 1, + (struct damon_addr_range[]){}, 0, -EINVAL); + /* Negative size regions should return -EINVAL. */ + damon_test_set_regions_for(test, + (struct damon_addr_range[]){}, 0, + (struct damon_addr_range[]){ + {.start = 42, .end = 21}, + }, 1, 1, + (struct damon_addr_range[]){}, 0, -EINVAL); } static void damon_test_update_monitoring_result(struct kunit *test) -- 2.47.3