From d33c6b5409b908a56af689a208d943360fca3c27 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Thu, 28 Sep 2023 15:47:45 +0200
Subject: [PATCH] backends/drm: don't crash if the surface is nullptr

CCBUG: 474987
---
 src/backends/drm/drm_egl_layer_surface.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backends/drm/drm_egl_layer_surface.cpp b/src/backends/drm/drm_egl_layer_surface.cpp
index e8d32cca2b..0bbd938f42 100644
--- a/src/backends/drm/drm_egl_layer_surface.cpp
+++ b/src/backends/drm/drm_egl_layer_surface.cpp
@@ -168,6 +168,9 @@ bool EglGbmLayerSurface::endRendering(const QRegion &damagedRegion)
 
 std::chrono::nanoseconds EglGbmLayerSurface::queryRenderTime() const
 {
+    if (!m_surface) {
+        return std::chrono::nanoseconds::zero();
+    }
     const auto cpuTime = m_surface->renderEnd - m_surface->renderStart;
     if (m_surface->timeQuery) {
         m_eglBackend->makeCurrent();