Check for null buffer in ColorFade

Screenshot buffers can be null for various reasons so protect against
NPE when taking screenshots

Test: No crash if null buffer
Change-Id: Ie6c47c29227b1c1dc67aeda9a301f4bf3d904e07

1 files changed, 4 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/display/ColorFade.java b/services/core/java/com/android/server/display/ColorFade.java
index ad3cd67ad65b..73f788901dc9 100644
--- a/services/core/java/com/android/server/display/ColorFade.java
+++ b/services/core/java/com/android/server/display/ColorFade.java
@@ -493,6 +493,10 @@ final class ColorFade {
                         == Display.COLOR_MODE_DISPLAY_P3;
                 SurfaceControl.ScreenshotHardwareBuffer screenshotBuffer =
                         mDisplayManagerInternal.systemScreenshot(mDisplayId);
+                if (screenshotBuffer == null) {
+                    Slog.e(TAG, "Failed to take screenshot. Buffer is null");
+                    return false;
+                }
                 s.attachAndQueueBufferWithColorSpace(screenshotBuffer.getHardwareBuffer(),
                         screenshotBuffer.getColorSpace());