https://bugs.kde.org/show_bug.cgi?id=357085
--- Comment #12 from Lorenzo Desole <lorenzodes...@gmail.com> ---
(In reply to Martin Klapetek from comment #11)
> Ok, good to know.
Here's a crash report with QT 5.5 (debug symbols included)
Thread 8 (Thread 0x7f36acea2700 (LWP 1703)):
#0 0x00007f36bc975c1d in poll () at /lib64/libc.so.6
#1 0x00007f36c18bc422 in () at /usr/lib64/libxcb.so.1
#2 0x00007f36c18be00f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3 0x00007f36aeff33c9 in QXcbEventReader::run() (this=0x126b400) at
qxcbconnection.cpp:1229
#4 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x126b400) at
thread/qthread_unix.cpp:331
#5 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#6 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 7 (Thread 0x7f36a61fd700 (LWP 1795)):
#0 0x00007f36b9098cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1 0x00007f36b9056387 in g_main_context_prepare () at
/usr/lib64/libglib-2.0.so.0
#2 0x00007f36b9056d80 in () at /usr/lib64/libglib-2.0.so.0
#3 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#4 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f36a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f36a61fcdf0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6 0x00007f36bd06861a in QThread::exec() (this=this@entry=0x1344410) at
thread/qthread.cpp:503
#7 0x00007f36c037adf8 in QQmlThreadPrivate::run() (this=0x1344410) at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x1344410) at
thread/qthread_unix.cpp:331
#9 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 6 (Thread 0x7f36992e2700 (LWP 1816)):
#0 0x00007f36b9098d14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1 0x00007f36b9056d73 in () at /usr/lib64/libglib-2.0.so.0
#2 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f36940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f36992e1df0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#5 0x00007f36bd06861a in QThread::exec() (this=this@entry=0x1660400) at
thread/qthread.cpp:503
#6 0x00007f36c037adf8 in QQmlThreadPrivate::run() (this=0x1660400) at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x1660400) at
thread/qthread_unix.cpp:331
#8 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#9 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 5 (Thread 0x7f3693a14700 (LWP 1817)):
#0 0x00007f36b9054210 in () at /usr/lib64/libglib-2.0.so.0
#1 0x00007f36b905644b in g_main_context_prepare () at
/usr/lib64/libglib-2.0.so.0
#2 0x00007f36b9056d80 in () at /usr/lib64/libglib-2.0.so.0
#3 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#4 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f368c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3693a13df0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#6 0x00007f36bd06861a in QThread::exec() (this=this@entry=0x176e9d0) at
thread/qthread.cpp:503
#7 0x00007f36c037adf8 in QQmlThreadPrivate::run() (this=0x176e9d0) at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x176e9d0) at
thread/qthread_unix.cpp:331
#9 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 4 (Thread 0x7f3692096700 (LWP 1820)):
#0 0x00007f36bc18305f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1 0x00007f36c2b4186b in QTWTF::TCMalloc_PageHeap::scavengerThread()
(this=0x7f36c2e28ea0 <QTWTF::pageheap_memory>)
at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2 0x00007f36c2b41899 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*)
(context=<optimized out>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#4 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
---Type <return> to continue, or q <return> to quit---
Thread 3 (Thread 0x7f360a9d3700 (LWP 1830)):
#0 0x00007f36bc975c1d in poll () at /lib64/libc.so.6
#1 0x00007f36b9056e64 in () at /usr/lib64/libglib-2.0.so.0
#2 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f36040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f360a9d2db0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#5 0x00007f36bd06861a in QThread::exec() (this=this@entry=0x1a85560) at
thread/qthread.cpp:503
#6 0x00007f36c0f13282 in QQuickPixmapReader::run() (this=0x1a85560) at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/quick/util/qquickpixmapcache.cpp:760
#7 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x1a85560) at
thread/qthread_unix.cpp:331
#8 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#9 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 2 (Thread 0x7f35fd6db700 (LWP 1848)):
#0 0x00007f36b9098cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1 0x00007f36b9056e4a in () at /usr/lib64/libglib-2.0.so.0
#2 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f35f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f35fd6dadd0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#5 0x00007f36bd06861a in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:503
#6 0x00007f35fed28cf7 in KCupsConnection::run() () at
/usr/lib64/libkcupslib.so
#7 0x00007f36bd06d32f in QThreadPrivate::start(void*) (arg=0x3caa290) at
thread/qthread_unix.cpp:331
#8 0x00007f36bc17f0a4 in start_thread () at /lib64/libpthread.so.0
#9 0x00007f36bc97e04d in clone () at /lib64/libc.so.6
Thread 1 (Thread 0x7f36c345b7c0 (LWP 1702)):
#0 0x00007f36bc94fded in nanosleep () at /lib64/libc.so.6
#1 0x00007f36bc94fc84 in sleep () at /lib64/libc.so.6
#2 0x00007f36c30a3bac in startProcessInternal(int, char const**, bool, bool)
(argc=<optimized out>, argv=0x7fff8953d830, waitAndExit=waitAndExit@entry=true,
directly=directly@entry=false) at
/usr/src/debug/kcrash-5.18.0/src/kcrash.cpp:650
#3 0x00007f36c30a422a in KCrash::startProcess(int, char const**, bool)
(argc=argc@entry=21, argv=argv@entry=0x7fff8953d830,
waitAndExit=waitAndExit@entry=true)
at /usr/src/debug/kcrash-5.18.0/src/kcrash.cpp:616
#4 0x00007f36c30a4675 in KCrash::defaultCrashHandler(int) (sig=<optimized
out>) at /usr/src/debug/kcrash-5.18.0/src/kcrash.cpp:527
#5 0x00007f36bc8ce200 in <signal handler called> () at /lib64/libc.so.6
#6 0x00007f36bd7c0360 in QScreen::handle() const (this=0x0) at
kernel/qscreen.cpp:112
#7 0x00007f36aeff4be9 in QXcbIntegration::createPlatformWindow(QWindow*) const
(this=<optimized out>, window=0x3f2b7a0) at qxcbintegration.cpp:196
#8 0x00007f36bd7a0ef5 in QWindowPrivate::create(bool) (this=0x372e9d0,
recursive=recursive@entry=false) at kernel/qwindow.cpp:392
#9 0x00007f36bd7a10eb in QWindow::create() (this=this@entry=0x3f2b7a0) at
kernel/qwindow.cpp:548
#10 0x00007f36bd7a1178 in QWindow::winId() const (this=0x3f2b7a0) at
kernel/qwindow.cpp:567
#11 0x00007f36c2e6f175 in () at /usr/lib64/libKF5PlasmaQuick.so.5
#12 0x00007f36c2e719f9 in () at /usr/lib64/libKF5PlasmaQuick.so.5
#13 0x00007f36bd278cc6 in QMetaObject::activate(QObject*, int, int, void**)
(sender=0x36a1c70, signalOffset=<optimized out>, local_signal_index=<optimized
out>, argv=0x0)
at kernel/qobject.cpp:3713
#14 0x00007f36bd27873f in QMetaObject::activate(QObject*, int, int, void**)
(a=0x7fff8953e320, r=0x36a1c70, this=0x3919aa0) at
../../src/corelib/kernel/qobject_impl.h:124
#15 0x00007f36bd27873f in QMetaObject::activate(QObject*, int, int, void**)
(sender=0x13dafa0, signalOffset=<optimized out>, local_signal_index=<optimized
out>, argv=0x0)
at kernel/qobject.cpp:3698
#16 0x00007f36bd278cc6 in QMetaObject::activate(QObject*, int, int, void**)
(sender=sender@entry=0x135e820, signalOffset=<optimized out>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at
kernel/qobject.cpp:3713
#17 0x00007f36bd2792e7 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x135e820, m=m@entry=0x7f36bd697860
<QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0,
argv=argv@entry=0x0) at kernel/qobject.cpp:3578
#18 0x00007f36bd2faa90 in QTimer::timeout(QTimer::QPrivateSignal)
(this=this@entry=0x135e820) at .moc/moc_qtimer.cpp:197
#19 0x00007f36bd285f22 in QTimer::timerEvent(QTimerEvent*) (this=0x135e820,
e=<optimized out>) at kernel/qtimer.cpp:247
#20 0x00007f36bd2798bc in QObject::event(QEvent*) (this=0x135e820, e=<optimized
out>) at kernel/qobject.cpp:1220
#21 0x00007f36be5c1e7c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x12506a0, receiver=receiver@entry=0x135e820,
e=e@entry=0x7fff8953e880)
at kernel/qapplication.cpp:3716
#22 0x00007f36be5c6cc8 in QApplication::notify(QObject*, QEvent*)
(this=0x7fff8953ec30, receiver=0x135e820, e=0x7fff8953e880) at
kernel/qapplication.cpp:3499
#23 0x00007f36bd248e95 in QCoreApplication::notifyInternal(QObject*, QEvent*)
(this=0x7fff8953ec30, receiver=0x135e820, event=event@entry=0x7fff8953e880)
---Type <return> to continue, or q <return> to quit---
at kernel/qcoreapplication.cpp:965
#24 0x00007f36bd29f77d in QTimerInfoList::activateTimers()
(event=0x7fff8953e880, receiver=<optimized out>) at
../../src/corelib/kernel/qcoreapplication.h:224
#25 0x00007f36bd29f77d in QTimerInfoList::activateTimers() (this=0x129f2a0) at
kernel/qtimerinfo_unix.cpp:637
#26 0x00007f36bd29faa1 in timerSourceDispatch(GSource*, GSourceFunc, gpointer)
(source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#27 0x00007f36b9056c84 in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#28 0x00007f36b9056ed8 in () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f36b9056f7c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#30 0x00007f36bd29fd8b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x128a370, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#31 0x00007f36bd246d53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fff8953eac0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:204
#32 0x00007f36bd24e8f6 in QCoreApplication::exec() () at
kernel/qcoreapplication.cpp:1229
#33 0x00007f36bd79286c in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1527
#34 0x00007f36be5be605 in QApplication::exec() () at
kernel/qapplication.cpp:2976
#35 0x0000000000436ab6 in main(int, char**) (argc=2, argv=<optimized out>) at
/usr/src/debug/plasma-workspace-5.5.4/shell/main.cpp:181
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