[PATCH bpf-next 06/24] selftests/bpf: Set errno when urand_spawn() fails

[Ilya Leoshkevich <iii@xxxxxxxxxxxxx>]

The result of urand_spawn() is checked with ASSERT_OK_PTR, which treats
NULL as success if errno == 0.

Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
 tools/testing/selftests/bpf/prog_tests/usdt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/usdt.c b/tools/testing/selftests/bpf/prog_tests/usdt.c
index 9ad9da0f215e..56ed1eb9b527 100644
--- a/tools/testing/selftests/bpf/prog_tests/usdt.c
+++ b/tools/testing/selftests/bpf/prog_tests/usdt.c
@@ -314,6 +314,7 @@ static FILE *urand_spawn(int *pid)
 
 	if (fscanf(f, "%d", pid) != 1) {
 		pclose(f);
+		errno = EINVAL;
 		return NULL;
 	}
 
-- 
2.39.1