From 069bb65af0d0059391323f9ffd2edd9162d57588 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Vr=C3=A1til?= <dvratil@kde.org>
Date: Mon, 24 Feb 2020 15:12:30 +0100
Subject: fix: handle when backend fails to load/initialize

Summary:
Fixes a null pointer dereference in GetConfigOperation when BackendManager
fails to load a valid backend.

Reviewers: #plasma

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D27625
---
 src/getconfigoperation.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/getconfigoperation.cpp b/src/getconfigoperation.cpp
index 4cb9afb..f985845 100644
--- a/src/getconfigoperation.cpp
+++ b/src/getconfigoperation.cpp
@@ -171,6 +171,9 @@ void GetConfigOperation::start()
     Q_D(GetConfigOperation);
     if (BackendManager::instance()->method() == BackendManager::InProcess) {
         auto backend = d->loadBackend();
+        if (!backend) {
+            return; // loadBackend() already set error and called emitResult() for us
+        }
         d->config = backend->config()->clone();
         d->loadEdid(backend);
         emitResult();
--
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