hwloc__read_fd 625 opal/mca/hwloc/hwloc201/hwloc/hwloc/topology-linux.c if (hwloc__read_fd(fd, &buffer, &filesize) < 0) hwloc__read_fd 751 opal/mca/hwloc/hwloc201/hwloc/hwloc/topology-linux.c if (hwloc__read_fd(fd, &buffer, &filesize) < 0)