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

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

[Ivan Orlov]

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

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

[Shuah Khan]

Hi Ivan,

On 3/22/23 14:37, Ivan Orlov wrote:
> 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>

Thank you for the patch.

> ---
>   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);

This message is unnecessary. validate() prints an error message.

> +	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");

Same here.

> +	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;

thanks,
-- Shuah