https://bugs.kde.org/show_bug.cgi?id=359611

--- Comment #35 from Eugene Shalygin <eugene.shalygin+bugzilla....@gmail.com> 
---
And this one is from Dolphin when I invoke "Delete" for the first time after
Dolphin launch:

(gdb) thread apply all bt

Thread 5 (Thread 0x7fffd1733700 (LWP 3510)):
#0  0x00007fffeeb3a358 in pthread_cond_timedwait () from /lib64/libpthread.so.0
#1  0x00007ffff2412038 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib64/libQt5Core.so.5
#2  0x00007ffff240ea72 in QThreadPoolThread::run() () from
/usr/lib64/libQt5Core.so.5
#3  0x00007ffff24119ec in QThreadPrivate::start(void*) () from
/usr/lib64/libQt5Core.so.5
#4  0x00007fffeeb34424 in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff784adbd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fffd2bcc700 (LWP 3504)):
#0  0x00007ffff7841d3d in poll () from /lib64/libc.so.6
#1  0x00007fffec9abf4c in g_main_context_iterate.isra () from
/usr/lib64/libglib-2.0.so.0
#2  0x00007fffec9ac05c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007ffff25feeef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#4  0x00007ffff25aed1a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#5  0x00007ffff240d544 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007ffff24119ec in QThreadPrivate::start(void*) () from
/usr/lib64/libQt5Core.so.5
#7  0x00007fffeeb34424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff784adbd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fffd988f700 (LWP 3503)):
#0  0x00007ffff7841d3d in poll () from /lib64/libc.so.6
#1  0x00007fffec9abf4c in g_main_context_iterate.isra () from
/usr/lib64/libglib-2.0.so.0
#2  0x00007fffec9ac05c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007ffff25feeef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#4  0x00007ffff25aed1a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#5  0x00007ffff240d544 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007ffff7ed2395 in QDBusConnectionManager::run() () from
/usr/lib64/libQt5DBus.so.5
#7  0x00007ffff24119ec in QThreadPrivate::start(void*) () from
/usr/lib64/libQt5Core.so.5
#8  0x00007fffeeb34424 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ffff784adbd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fffe1ec2700 (LWP 3502)):
#0  0x00007ffff7841d3d in poll () from /lib64/libc.so.6
#1  0x00007fffebe5dac2 in _xcb_conn_wait () from /usr/lib64/libxcb.so.1
#2  0x00007fffebe5f747 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fffe35cf239 in QXcbEventReader::run() () from
/usr/lib64/libQt5XcbQpa.so.5
#4  0x00007ffff24119ec in QThreadPrivate::start(void*) () from
/usr/lib64/libQt5Core.so.5
#5  0x00007fffeeb34424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff784adbd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fffe3d95840 (LWP 3494)):
#0  0x00007fffeeb39faf in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007ffff241205a in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib64/libQt5Core.so.5
#2  0x00007ffff7f29064 in QDBusPendingCallPrivate::waitForFinished() () from
/usr/lib64/libQt5DBus.so.5
#3  0x00007ffff7ee5121 in QDBusConnectionPrivate::sendWithReply(QDBusMessage
const&, int, int) () from /usr/lib64/libQt5DBus.so.5
#4  0x00007ffff7ee57f2 in QDBusConnectionPrivate::findMetaObject(QString
const&, QString const&, QString const&, QDBusError&) () from
/usr/lib64/libQt5DBus.so.5
#5  0x00007ffff7ef128d in QDBusInterfacePrivate::QDBusInterfacePrivate(QString
const&, QString const&, QString const&, QDBusConnection const&) ()
   from /usr/lib64/libQt5DBus.so.5
#6  0x00007ffff7ef1405 in QDBusInterface::QDBusInterface(QString const&,
QString const&, QString const&, QDBusConnection const&, QObject*) ()
   from /usr/lib64/libQt5DBus.so.5
#7  0x00007ffff60f9dd3 in KIO::JobUiDelegate::setWindow(QWidget*) () from
/usr/lib64/libKF5KIOWidgets.so.5
#8  0x00007ffff74f815d in DolphinView::deleteSelectedItems() () from
/usr/lib64/libdolphinprivate.so.5
#9  0x00007ffff25d7b6e in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib64/libQt5Core.so.5
#10 0x00007ffff2e297e2 in QAction::triggered(bool) () from
/usr/lib64/libQt5Widgets.so.5
#11 0x00007ffff2e2c2e0 in QAction::activate(QAction::ActionEvent) () from
/usr/lib64/libQt5Widgets.so.5
#12 0x00007ffff2f90072 in
QMenuPrivate::activateCausedStack(QVector<QPointer<QWidget> > const&, QAction*,
QAction::ActionEvent, bool) ()
   from /usr/lib64/libQt5Widgets.so.5
#13 0x00007ffff2f96266 in QMenuPrivate::activateAction(QAction*,
QAction::ActionEvent, bool) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007ffff2f9a439 in QMenu::mouseReleaseEvent(QMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#15 0x00007ffff2e76da8 in QWidget::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#16 0x00007ffff2f9aeab in QMenu::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#17 0x00007ffff2e32a8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#18 0x00007ffff2e38441 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#19 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#20 0x00007ffff2e37215 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib64/libQt5Widgets.so.5
#21 0x00007ffff2e90df7 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#22 0x00007ffff2e92f4b in QWidgetWindow::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#23 0x00007ffff2e32a8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#24 0x00007ffff2e37cce in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#25 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#26 0x00007ffff28e870b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() from /usr/lib64/libQt5Gui.so.5
#27 0x00007ffff28ea235 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /usr/lib64/libQt5Gui.so.5
#28 0x00007ffff28caa5b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib64/libQt5Gui.so.5
#29 0x00007fffe36037d0 in userEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /usr/lib64/libQt5XcbQpa.so.5
#30 0x00007fffec9abd57 in g_main_context_dispatch () from
/usr/lib64/libglib-2.0.so.0
#31 0x00007fffec9abfb0 in g_main_context_iterate.isra () from
/usr/lib64/libglib-2.0.so.0
#32 0x00007fffec9ac05c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#33 0x00007ffff25feeef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#34 0x00007ffff25aed1a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#35 0x00007ffff2f950bd in QMenu::exec(QPoint const&, QAction*) () from
/usr/lib64/libQt5Widgets.so.5
#36 0x00007ffff7b57c32 in DolphinContextMenu::openItemContextMenu() () from
/usr/lib64/libkdeinit5_dolphin.so
#37 0x00007ffff7b58fcd in DolphinContextMenu::open() () from
/usr/lib64/libkdeinit5_dolphin.so
#38 0x00007ffff7b4e251 in DolphinMainWindow::openContextMenu(QPoint const&,
KFileItem const&, QUrl const&, QList<QAction*> const&) ()
   from /usr/lib64/libkdeinit5_dolphin.so
#39 0x00007ffff25d7b6e in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib64/libQt5Core.so.5
#40 0x00007ffff751d1c4 in DolphinView::requestContextMenu(QPoint const&,
KFileItem const&, QUrl const&, QList<QAction*> const&) () from
/usr/lib64/libdolphinprivate.so.5
#41 0x00007ffff74f1f6e in DolphinView::slotItemContextMenuRequested(int,
QPointF const&) () from /usr/lib64/libdolphinprivate.so.5
#42 0x00007ffff25d7b6e in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib64/libQt5Core.so.5
#43 0x00007ffff751b596 in KItemListController::itemContextMenuRequested(int,
QPointF const&) () from /usr/lib64/libdolphinprivate.so.5
#44 0x00007ffff74b40fd in
KItemListController::mousePressEvent(QGraphicsSceneMouseEvent*, QTransform
const&) () from /usr/lib64/libdolphinprivate.so.5
#45 0x00007ffff74b3a04 in KItemListController::processEvent(QEvent*, QTransform
const&) () from /usr/lib64/libdolphinprivate.so.5
#46 0x00007ffff74c56c2 in KItemListView::event(QEvent*) () from
/usr/lib64/libdolphinprivate.so.5
#47 0x00007ffff2e32a8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#48 0x00007ffff2e37cce in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#49 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#50 0x00007ffff312b883 in QGraphicsScenePrivate::sendEvent(QGraphicsItem*,
QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#51 0x00007ffff312c2e1 in
QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#52 0x00007ffff3134996 in
QGraphicsScenePrivate::mousePressEventHandler(QGraphicsSceneMouseEvent*) ()
from /usr/lib64/libQt5Widgets.so.5
#53 0x00007ffff3134dd9 in
QGraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#54 0x00007ffff313d5b0 in QGraphicsScene::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#55 0x00007ffff2e32a8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#56 0x00007ffff2e37cce in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#57 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#58 0x00007ffff31575bf in QGraphicsView::mousePressEvent(QMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#59 0x00007ffff2e7764f in QWidget::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#60 0x00007ffff2f54a0e in QFrame::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#61 0x00007ffff3158a2b in QGraphicsView::viewportEvent(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#62 0x00007ffff25afc4d in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) ()
from /usr/lib64/libQt5Core.so.5
#63 0x00007ffff2e32a65 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#64 0x00007ffff2e38441 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#65 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#66 0x00007ffff2e37215 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib64/libQt5Widgets.so.5
#67 0x00007ffff2e90a89 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#68 0x00007ffff2e92f4b in QWidgetWindow::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#69 0x00007ffff2e32a8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#70 0x00007ffff2e37cce in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#71 0x00007ffff25afe8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#72 0x00007ffff28e870b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() from /usr/lib64/libQt5Gui.so.5
#73 0x00007ffff28ea235 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /usr/lib64/libQt5Gui.so.5
#74 0x00007ffff28caa5b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib64/libQt5Gui.so.5
#75 0x00007fffe36037d0 in userEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /usr/lib64/libQt5XcbQpa.so.5
#76 0x00007fffec9abd57 in g_main_context_dispatch () from
/usr/lib64/libglib-2.0.so.0
#77 0x00007fffec9abfb0 in g_main_context_iterate.isra () from
/usr/lib64/libglib-2.0.so.0
#78 0x00007fffec9ac05c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#79 0x00007ffff25feeef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#80 0x00007ffff25aed1a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#81 0x00007ffff25b683c in QCoreApplication::exec() () from
/usr/lib64/libQt5Core.so.5
#82 0x00007ffff7b61cf9 in kdemain () from /usr/lib64/libkdeinit5_dolphin.so
#83 0x00007ffff7781660 in __libc_start_main () from /lib64/libc.so.6
#84 0x00000000004007b9 in _start ()

This is just to illustrate that this QDBus bug penetrates almost everywhere...

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