fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下：

Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753
  Children      Self  Command          Shared Object                  Symbol
+   91.73%     0.00%  konsole          konsole                        [.] _start
+   91.73%     0.00%  konsole          libc.so.6                      [.] __libc_start_main@@GLIBC_2.34
+   91.73%     0.00%  konsole          libc.so.6                      [.] __libc_start_call_main
+   91.73%     0.00%  konsole          konsole                        [.] main
+   91.73%     0.00%  konsole          libQt6Core.so.6.10.3           [.] QCoreApplication::exec()
+   91.71%     0.02%  konsole          libQt6Core.so.6.10.3           [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
+   91.70%     0.00%  konsole          libQt6Core.so.6.10.3           [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
+   91.39%     0.00%  konsole          libglib-2.0.so.0.8800.0        [.] g_main_context_iteration
+   91.38%     0.01%  konsole          libglib-2.0.so.0.8800.0        [.] g_main_context_iterate_unlocked.isra.0
+   91.25%     0.01%  konsole          libglib-2.0.so.0.8800.0        [.] g_main_context_dispatch_unlocked.lto_priv.0
+   91.05%     0.02%  konsole          libQt6Core.so.6.10.3           [.] QCoreApplication::notifyInternal2(QObject*, QEvent*)
+   90.96%     0.01%  konsole          libQt6Widgets.so.6.10.3        [.] QApplicationPrivate::notify_helper(QObject*, QEvent*)
+   89.40%     0.02%  konsole          libQt6Widgets.so.6.10.3        [.] QWidget::event(QEvent*)
+   89.35%     0.00%  konsole          libQt6Core.so.6.10.3           [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*)
+   89.35%     0.02%  konsole          libQt6Core.so.6.10.3           [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)
+   89.09%     0.00%  konsole          libKF6XmlGui.so.6.25.0         [.] KXmlGuiWindow::event(QEvent*)
+   88.94%     0.01%  konsole          libQt6Widgets.so.6.10.3        [.] QWidgetRepaintManager::paintAndFlush()
+   64.37%    63.13%  konsole          libQt6Gui.so.6.10.3            [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long)
+   64.37%     0.00%  konsole          libQt6Gui.so.6.10.3            [.] QPainter::fillRect(QRect const&, QColor const&)
+   64.37%     0.00%  konsole          libQt6Gui.so.6.10.3            [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*)
+   55.10%     0.00%  konsole          libQt6Widgets.so.6.10.3        [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>,
+   54.99%     0.02%  konsole          libQt6Widgets.so.6.10.3        [.] QWidgetPrivate::sendPaintEvent(QRegion const&)
+   48.05%     0.03%  konsole          libkonsoleprivate.so.26.04.0   [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*)
+   32.81%     0.03%  konsole          libQt6Gui.so.6.10.3            [.] QBackingStore::beginPaint(QRegion const&)
+   32.78%     0.00%  konsole          libQt6WaylandClient.so.6.10.3  [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&)
+   16.03%     0.57%  konsole          libkonsoleprivate.so.26.04.0   [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso
+   11.89%     0.07%  konsole          libkonsoleprivate.so.26.04.0   [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor
+   11.30%     0.12%  konsole          libQt6Gui.so.6.10.3            [.] QPainter::drawText(QPointF const&, QString const&, int, int)
+    7.77%     0.00%  Thread (pooled)  libc.so.6                      [.] __GI___clone3
+    7.77%     0.00%  Thread (pooled)  libc.so.6                      [.] start_thread
+    7.77%     0.00%  Thread (pooled)  libQt6Core.so.6.10.3           [.] QThreadPrivate::start(void*)
+    7.70%     0.24%  Thread (pooled)  libQt6Core.so.6.10.3           [.] QThreadPoolThread::run()
+    6.72%     0.02%  konsole          libQt6Widgets.so.6.10.3        [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&,
+    6.48%     0.02%  konsole          libkonsoleprivate.so.26.04.0   [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*)
+    6.38%     0.01%  konsole          libQt6Widgets.so.6.10.3        [.] QScrollBar::paintEvent(QPaintEvent*)
+    6.13%     0.01%  konsole          breeze6.so                     [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*)
+    6.10%     0.04%  konsole          breeze6.so                     [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const
+    5.43%     0.03%  konsole          libQt6Widgets.so.6.10.3        [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c
+    5.40%     0.10%  konsole          libQt6Gui.so.6.10.3            [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*)
+    5.31%     0.00%  konsole          breeze6.so                     [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const
+    5.28%     0.00%  konsole          breeze6.so                     [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const
+    5.23%     0.02%  konsole          breeze6.so                     [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0]
+    5.12%     0.10%  konsole          libQt6Gui.so.6.10.3            [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&)
+    4.93%     0.00%  konsole          libQt6Gui.so.6.10.3            [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode)
+    4.91%     0.18%  Thread (pooled)  libQt6Gui.so.6.10.3            [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab

发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？