Index: src/applications/search/controller/PhabricatorApplicationSearchController.php
===================================================================
--- src/applications/search/controller/PhabricatorApplicationSearchController.php
+++ src/applications/search/controller/PhabricatorApplicationSearchController.php
@@ -198,7 +198,16 @@
 
       $pager = new AphrontCursorPagerView();
       $pager->readFromRequest($request);
-      $pager->setPageSize($engine->getPageSize($saved_query));
+      $page_size = $engine->getPageSize($saved_query);
+      if (is_finite($page_size)) {
+        $pager->setPageSize($page_size);
+      } else {
+        // Consider an INF pagesize to mean a large finite pagesize.
+
+        // TODO: It would be nice to handle this more gracefully, but math
+        // with INF seems to vary across PHP versions, systems, and runtimes.
+        $pager->setPageSize(0xFFFF);
+      }
       $objects = $query->setViewer($request->getUser())
         ->executeWithCursorPager($pager);
 
Index: src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php
===================================================================
--- src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php
+++ src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php
@@ -19,6 +19,11 @@
   }
 
   protected function getPagingValue($result) {
+    if (!is_object($result)) {
+      // This interface can't be typehinted and PHP gets really angry if we
+      // call a method on a non-object, so add an explicit check here.
+      throw new Exception(pht('Expected object, got "%s"!', gettype($result)));
+    }
     return $result->getID();
   }