linux: properly handle failures to parse /proc/cpuinfo

Signed-off-by: Brice Goglin <[email protected]>

Author: bgoglin

hwloc/topology-linux.c

@@ -4162,7 +4162,7 @@ hwloc_look_linuxfs(struct hwloc_backend *backend)
   struct hwloc_linux_cpuinfo_proc * Lprocs = NULL;
   struct hwloc_obj_info_s *global_infos = NULL;
   unsigned global_infos_count = 0;
-  int numprocs = 0;
+  int numprocs;
   int already_pus;
   int already_numanodes;
   int err;
@@ -4193,6 +4193,8 @@ hwloc_look_linuxfs(struct hwloc_backend *backend)
    * /proc/cpuinfo
    */
   numprocs = hwloc_linux_parse_cpuinfo(data, "/proc/cpuinfo", &Lprocs, &global_infos, &global_infos_count);
+  if (numprocs < 0)
+    numprocs = 0;
 
   /**************************
    * detect model for quirks