SYSCALL_EPERM 401 tools/testing/selftests/bpf/test_sock_addr.c SYSCALL_EPERM, SYSCALL_EPERM 513 tools/testing/selftests/bpf/test_sock_addr.c SYSCALL_EPERM, SYSCALL_EPERM 1570 tools/testing/selftests/bpf/test_sock_addr.c if (test->expected_result == SYSCALL_EPERM && err == EPERM) {