Re: [PATCH] testing/selftests/mqueue: Fix mq_perf_tests to free the allocated cpu set

From: Shuah Khan
Date: Wed Apr 06 2022 - 17:16:20 EST

On 4/6/22 11:57 AM, Athira Rajeev wrote:
The selftest "mqueue/mq_perf_tests.c" use CPU_ALLOC to allocate
CPU set. This cpu set is used further in pthread_attr_setaffinity_np
and by pthread_create in the code. But in current code, allocated
cpu set is not freed. Fix this by adding CPU_FREE after its usage
is done.

Good find.

Signed-off-by: Athira Rajeev <atrajeev@xxxxxxxxxxxxxxxxxx>
tools/testing/selftests/mqueue/mq_perf_tests.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/mqueue/mq_perf_tests.c b/tools/testing/selftests/mqueue/mq_perf_tests.c
index b019e0b8221c..17c41f216bef 100644
--- a/tools/testing/selftests/mqueue/mq_perf_tests.c
+++ b/tools/testing/selftests/mqueue/mq_perf_tests.c
@@ -732,6 +732,7 @@ int main(int argc, char *argv[])
+ CPU_FREE(cpu_set);
if (!continuous_mode) {
pthread_join(cpu_threads[0], &retval);
shutdown((long)retval, "perf_test_thread()", __LINE__);

CPU_ALLOC() is called very early on in main() and there are a
few error paths that exit without calling CPU_FREE. This change
doesn't fully fix the problem.

Review the other exit paths where CPU_FREE is needed.

-- Shuah