Error: Cannot open file tools/testing/selftests/bpf/prog_tests/test_struct_ops_kptr_return.c
Error: Cannot open file tools/testing/selftests/bpf/progs/struct_ops_kptr_return.c
Error: Cannot open file tools/testing/selftests/bpf/progs/struct_ops_kptr_return_fail__invalid_scalar.c
Error: Cannot open file tools/testing/selftests/bpf/progs/struct_ops_kptr_return_fail__local_kptr.c
Error: Cannot open file tools/testing/selftests/bpf/progs/struct_ops_kptr_return_fail__nonzero_offset.c
Error: Cannot open file tools/testing/selftests/bpf/progs/struct_ops_kptr_return_fail__wrong_type.c