To fix the problem, we must first understand the components involved in the error message. The phrase is a composite of several system states:

if (uio_create_addr(ip) < 0) perror("uio_create_addr"); fprintf(stderr, "errno=%d (%s)\n", errno, strerror(errno)); // Abort gracefully, not with SIGABRT exit(EXIT_FAILURE);

Before fixing the error, we must break it down semantically.