#0 0xb679c734 in QQuickItemPrivate::itemToWindowTransform() const () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5
#1 0xb679f264 in QQuickItem::mapToScene(QPointF const&) const () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5
#2 0xb6f68104 in ?? ()
from /usr/lib/arm-linux-gnueabihf/libKF5PlasmaQuick.so.5
Backtrace stopped: previous frame identical to this frame (corrupt stack?)