SYSCALL_ENOTSUPP 471 tools/testing/selftests/bpf/test_sock_addr.c SYSCALL_ENOTSUPP, SYSCALL_ENOTSUPP 1575 tools/testing/selftests/bpf/test_sock_addr.c if (test->expected_result == SYSCALL_ENOTSUPP && err == ENOTSUPP) {