From: SeongJae Park Date: Sat, 1 Nov 2025 18:20:07 +0000 (-0700) Subject: mm/damon/tests/core-kunit: handle alloc failres in damon_test_new_filter() X-Git-Tag: v6.19-rc1~112^2~161 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28ab2265e9422ccd81e4beafc0ace90f78de04c4;p=thirdparty%2Fkernel%2Flinux.git mm/damon/tests/core-kunit: handle alloc failres in damon_test_new_filter() damon_test_new_filter() is assuming all dynamic memory allocation in it will succeed. Those are indeed likely in the real use cases since those allocations are too small to fail, but theoretically those could fail. In the case, inappropriate memory access can happen. Fix it by appropriately cleanup pre-allocated memory and skip the execution of the remaining tests in the failure cases. Link: https://lkml.kernel.org/r/20251101182021.74868-14-sj@kernel.org Fixes: 2a158e956b98 ("mm/damon/core-test: add a test for damos_new_filter()") Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Cc: Kefeng Wang Cc: [6.6+] Signed-off-by: Andrew Morton --- diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index b9bd69a57e62e..03c7ac31db5cf 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -505,6 +505,8 @@ static void damos_test_new_filter(struct kunit *test) struct damos_filter *filter; filter = damos_new_filter(DAMOS_FILTER_TYPE_ANON, true, false); + if (!filter) + kunit_skip(test, "filter alloc fail"); KUNIT_EXPECT_EQ(test, filter->type, DAMOS_FILTER_TYPE_ANON); KUNIT_EXPECT_EQ(test, filter->matching, true); KUNIT_EXPECT_PTR_EQ(test, filter->list.prev, &filter->list);