From: SeongJae Park Date: Sat, 1 Nov 2025 18:20:03 +0000 (-0700) Subject: mm/damon/tests/core-kunit: handle alloc failures in damon_test_ops_registration() X-Git-Tag: v6.19-rc1~112^2~165 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4f835f4e8c863985f15abd69db033c2f66546094;p=thirdparty%2Flinux.git mm/damon/tests/core-kunit: handle alloc failures in damon_test_ops_registration() damon_test_ops_registration() 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/20251101182021.74868-10-sj@kernel.org Fixes: 4f540f5ab4f2 ("mm/damon/core-test: add a kunit test case for ops registration") Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Cc: Kefeng Wang Cc: [5.19+] Signed-off-by: Andrew Morton --- diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index 10618cdd188ee..96c8f1269f44b 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -320,6 +320,9 @@ static void damon_test_ops_registration(struct kunit *test) struct damon_operations ops = {.id = DAMON_OPS_VADDR}, bak; bool need_cleanup = false; + if (!c) + kunit_skip(test, "ctx alloc fail"); + /* DAMON_OPS_VADDR is registered only if CONFIG_DAMON_VADDR is set */ if (!damon_is_registered_ops(DAMON_OPS_VADDR)) { bak.id = DAMON_OPS_VADDR;