[PATCH] selftests: sched: Add more core schedule prctl calls

From: Ivan Orlov <ivan.orlov0322@gmail.com>
To: shuah@kernel.org
Cc: linux-kernel-mentees@lists.linuxfoundation.org,
	Ivan Orlov <ivan.orlov0322@gmail.com>,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH] selftests: sched: Add more core schedule prctl calls
Date: Thu, 23 Mar 2023 00:37:24 +0400	[thread overview]
Message-ID: <20230322203724.4757-1-ivan.orlov0322@gmail.com> (raw)

The core sched kselftest makes prctl calls only with correct
parameters. This patch will extend this test with more core
schedule prctl calls with wrong parameters to increase code
coverage.

Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
---
 tools/testing/selftests/sched/cs_prctl_test.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/sched/cs_prctl_test.c b/tools/testing/selftests/sched/cs_prctl_test.c
index 25e0d95d3713..df8e4629b3b5 100644
--- a/tools/testing/selftests/sched/cs_prctl_test.c
+++ b/tools/testing/selftests/sched/cs_prctl_test.c
@@ -334,6 +334,14 @@ int main(int argc, char *argv[])
 	validate(get_cs_cookie(pid) != 0);
 	validate(get_cs_cookie(pid) == get_cs_cookie(procs[pidx].thr_tids[0]));
 
+	printf("\n## Try to pass wrong subcommand PR_SCHED_CORE_MAX = %d to prctl (shouldn't succeed)\n", PR_SCHED_CORE_MAX);
+	validate(_prctl(PR_SCHED_CORE, PR_SCHED_CORE_MAX, 0, PIDTYPE_PGID, 0) < 0
+		&& errno == EINVAL);
+
+	printf("\n## Try to pass not-null uaddr with forbidden command (shouldn't succeed)\n");
+	validate(_prctl(PR_SCHED_CORE, PR_SCHED_CORE_SHARE_TO, 0, PIDTYPE_PGID, 1) < 0
+		&& errno == EINVAL);
+
 	if (errors) {
 		printf("TESTS FAILED. errors: %d\n", errors);
 		res = 10;
-- 
2.34.1

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