Hi David,

On 7/12/2022 17:56, David Gow wrote:

It's possible that memory allocation for the copy will fail, but for the

I think it is "for the _filtered_ will fail". Maybe a typo?

Thanks, Yujie

copy of the suite to succeed. In this case, the copy could be leaked.

Properly free 'copy' in the error case for the allocation of 'filtered' failing.

Note that there may also have been a similar issue in kunit_filter_subsuites, before it was removed in "kunit: flatten kunit_suite*** to kunit_suite** in .kunit_test_suites".

This was reported by clang-analyzer via the kernel test robot, here: https://lore.kernel.org/all/c8073b8e-7b9e-0830-4177-87c12f16349c@intel.com/

Fixes: a02353f49162 ("kunit: bail out of test filtering logic quicker if OOM") Reported-by: kernel test robot yujie.liu@intel.com Signed-off-by: David Gow davidgow@google.com

---

lib/kunit/executor.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index 6c489d6c5e5d..5e223327196a 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -74,8 +74,10 @@ kunit_filter_tests(const struct kunit_suite *const suite, const char *test_glob) return ERR_PTR(-ENOMEM); filtered = kcalloc(n + 1, sizeof(*filtered), GFP_KERNEL);

• if (!filtered)

• if (!filtered) {

• kfree(copy);
  

  return ERR_PTR(-ENOMEM);
• }

n = 0; kunit_suite_for_each_test_case(suite, test_case) {