commit 238ec3ee671bcf6716348122bebefb20c25d1101
Author: David Edmundson <kde@davidedmundson.co.uk>
Date:   Thu, 17 Nov 2016 10:53:48 +0000

    [Windowed Widgets Runner] Don't access invalid KPluginInfo
    
    BUG: 372017
    FIXED-IN: 5.8.4
    
diff --git a/runners/windowedwidgets/windowedwidgetsrunner.cpp b/runners/windowedwidgets/windowedwidgetsrunner.cpp
index 5ccbd27..f86159a 100644
--- a/runners/windowedwidgets/windowedwidgetsrunner.cpp
+++ b/runners/windowedwidgets/windowedwidgetsrunner.cpp
@@ -60,6 +60,9 @@ void WindowedWidgetsRunner::match(Plasma::RunnerContext &context)
 
     foreach (const KPluginInfo &info, Plasma::PluginLoader::self()->listAppletInfo(QString())) {
         KService::Ptr service = info.service();
+        if (!service || !service->isValid()) {
+            continue;
+        }
 
         if (((service->name().contains(term, Qt::CaseInsensitive) ||
              service->genericName().contains(term, Qt::CaseInsensitive) ||