diff -u b/core/modules/system/system.module b/core/modules/system/system.module
--- b/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -854,7 +854,7 @@
 function system_get_info($type, $name = NULL) {
   $info = array();
   if ($type == 'module') {
-    if (!$data = \Drupal::state()->get('system.module.data')) {
+    if (!$data = \Drupal::cache()->get('system.module.data')) {
       $data = system_rebuild_module_data();
     }
     foreach (\Drupal::moduleHandler()->getModuleList() as $module => $filename) {
@@ -999,11 +999,11 @@
       $files[$name] = $module->getPathname();
     }
     $modules = \Drupal::moduleHandler()->buildModuleDependencies($modules);
-    // Store the module info in state. We rely on consecutive calls to
+    // Store the module info in cache. We rely on consecutive calls to
     // system_rebuild_module_data() to reset this key, such as when
     // listing modules, (un)installating modules, importing configuration,
     // updating the site and when flushing all caches.
-    \Drupal::state()->set('system.module.data', $modules);
+    \Drupal::cache()->set('system.module.data', $modules);
     $modules_cache = $modules;
 
     // Store filenames to allow drupal_get_filename() to
only in patch2:
unchanged:
--- a/core/modules/user/src/PermissionHandler.php
+++ b/core/modules/user/src/PermissionHandler.php
@@ -227,9 +227,8 @@ protected function sortPermissions(array $all_permissions = array()) {
    */
   protected function getModuleNames() {
     $modules = array();
-    $module_info = $this->systemRebuildModuleData();
     foreach (array_keys($this->moduleHandler->getModuleList()) as $module) {
-      $modules[$module] = $module_info[$module]->info['name'];
+      $modules[$module] = $this->moduleHandler->getName($module);
     }
     asort($modules);
     return $modules;