Re: [PATCH 3/4] selftests: ntsync: add wait argument validation tests

[Elizabeth Figura]

On Saturday, 27 June 2026 21:42:38 CDT Iván Ezequiel Rodriguez wrote:
> Add coverage for documented EINVAL cases: zero owner on wait any/all,
> non-zero pad, and objects from a different /dev/ntsync instance.
> 
> Signed-off-by: Iván Ezequiel Rodriguez <ivanrwcm25@xxxxxxxxx>
> ---
>  .../testing/selftests/drivers/ntsync/ntsync.c | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
> index 12b4b81edf7f..c9fe4d5987ec 100644
> --- a/tools/testing/selftests/drivers/ntsync/ntsync.c
> +++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
> @@ -1340,4 +1340,48 @@ TEST(stress_wait)
>  	close(stress_device);
>  }
>  
> +TEST(wait_args_validation)
> +{
> +	struct ntsync_sem_args sem_args = { .count = 1, .max = 1 };
> +	struct ntsync_wait_args wait_args = {0};
> +	struct timespec timeout;
> +	int fd, fd2, sem, ret;
> +	__u32 index;
> +
> +	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
> +	ASSERT_GE(fd, 0);
> +
> +	fd2 = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
> +	ASSERT_GE(fd2, 0);
> +
> +	sem = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args);
> +	EXPECT_GE(sem, 0);
> +
> +	ret = wait_any(fd, 1, &sem, 0, &index);
> +	EXPECT_EQ(-1, ret);
> +	EXPECT_EQ(EINVAL, errno);
> +
> +	ret = wait_all(fd, 1, &sem, 0, &index);
> +	EXPECT_EQ(-1, ret);
> +	EXPECT_EQ(EINVAL, errno);
> +
> +	clock_gettime(CLOCK_MONOTONIC, &timeout);
> +	wait_args.timeout = timeout.tv_sec * 1000000000ULL + timeout.tv_nsec;
> +	wait_args.count = 0;
> +	wait_args.objs = 0;
> +	wait_args.owner = 123;
> +	wait_args.pad = 1;
> +	ret = ioctl(fd, NTSYNC_IOC_WAIT_ANY, &wait_args);
> +	EXPECT_EQ(-1, ret);
> +	EXPECT_EQ(EINVAL, errno);
> +
> +	ret = wait_any(fd2, 1, &sem, 123, &index);
> +	EXPECT_EQ(-1, ret);
> +	EXPECT_EQ(EINVAL, errno);
> +
> +	close(sem);
> +	close(fd2);
> +	close(fd);
> +}
> +
>  TEST_HARNESS_MAIN
> 

Reviewed-by: Elizabeth Figura <zfigura@xxxxxxxxxxxxxxx>