[kde] [Bug 349117] New: Disappearing of KDE taskbar

[Kamil Szmit]

https://bugs.kde.org/show_bug.cgi?id=349117

            Bug ID: 349117
           Summary: Disappearing of KDE taskbar
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: szmitek at konto.pl

Application: plasma-desktop (4.11.18)
KDE Platform Version: 4.14.9
Qt Version: 4.8.6
Operating System: Linux 4.0.4-202.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Twenty One)"

-- Information about the crash:
- What I was doing when the application crashed:
I was refreshing page in Firefox browser after Flash crash.
- Unusual behavior I noticed:
KDE taskbar taskbar disappeared for a moment.

-- Backtrace:
Application: Powłoka pulpitu Plazmy (plasma-desktop), signal: Segmentation
fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9fb63a9900 (LWP 1949))]

Thread 3 (Thread 0x7f9f9ebb6700 (LWP 1957)):
#0  0x0000003bb2a0c590 in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x0000003d3519a49a in QTWTF::TCMalloc_PageHeap::scavengerThread() () at
/lib64/libQtScript.so.4
#2  0x0000003d3519a4c9 in  () at /lib64/libQtScript.so.4
#3  0x0000003bb2a0752a in start_thread () at /lib64/libpthread.so.0
#4  0x0000003bb230022d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f9f19351700 (LWP 1979)):
#0  0x0000003bb22f4c8d in poll () at /lib64/libc.so.6
#1  0x0000003bb4e49b34 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2  0x0000003bb4e49c4c in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x0000003d2b7b557e in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQtCore.so.4
#4  0x0000003d2b784d81 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQtCore.so.4
#5  0x0000003d2b7850e5 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQtCore.so.4
#6  0x0000003d2b679bb9 in QThread::exec() () at /lib64/libQtCore.so.4
#7  0x0000003d2b7656e3 in QInotifyFileSystemWatcherEngine::run() () at
/lib64/libQtCore.so.4
#8  0x0000003d2b67c41f in QThreadPrivate::start(void*) () at
/lib64/libQtCore.so.4
#9  0x0000003bb2a0752a in start_thread () at /lib64/libpthread.so.0
#10 0x0000003bb230022d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f9fb63a9900 (LWP 1949)):
[KCrash Handler]
#6  0x0000003d2b79aaed in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) () at /lib64/libQtCore.so.4
#7  0x00007f9f11b186af in
PackageKit::Transaction::finished(PackageKit::Transaction::Exit, unsigned int)
() at /lib64/libpackagekitqt4.so.0
#8  0x00007f9f11b1a0cd in PackageKit::TransactionPrivate::finished(unsigned
int, unsigned int) () at /lib64/libpackagekitqt4.so.0
#9  0x00007f9f11b1a202 in
PackageKit::TransactionPrivate::methodCallFinished(QDBusPendingCallWatcher*) ()
at /lib64/libpackagekitqt4.so.0
#10 0x00007f9f11b18f36 in PackageKit::Transaction::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) () at /lib64/libpackagekitqt4.so.0
#11 0x0000003d2b79ad9c in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) () at /lib64/libQtCore.so.4
#12 0x0000003d2c45ce1f in
QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at
/lib64/libQtDBus.so.4
#13 0x0000003d2b79f491 in QObject::event(QEvent*) () at /lib64/libQtCore.so.4
#14 0x00000037561c7efc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib64/libQtGui.so.4
#15 0x00000037561ce958 in QApplication::notify(QObject*, QEvent*) () at
/lib64/libQtGui.so.4
#16 0x00007f9fb86d1e0a in KApplication::notify(QObject*, QEvent*) () at
/lib64/libkdeui.so.5
#17 0x0000003d2b78622d in QCoreApplication::notifyInternal(QObject*, QEvent*)
() at /lib64/libQtCore.so.4
#18 0x0000003d2b7894f1 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /lib64/libQtCore.so.4
#19 0x0000003d2b7b53ee in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () at /lib64/libQtCore.so.4
#20 0x0000003bb4e497fb in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#21 0x0000003bb4e49b98 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#22 0x0000003bb4e49c4c in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#23 0x0000003d2b7b555e in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQtCore.so.4
#24 0x000000375626b176 in
QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /lib64/libQtGui.so.4
#25 0x0000003d2b784d81 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQtCore.so.4
#26 0x0000003d2b7850e5 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQtCore.so.4
#27 0x0000003d2b78a7c9 in QCoreApplication::exec() () at /lib64/libQtCore.so.4
#28 0x00000037620405dd in kdemain () at /lib64/libkdeinit4_plasma-desktop.so
#29 0x0000003bb221ffe0 in __libc_start_main () at /lib64/libc.so.6
#30 0x000000000040093e in _start ()

Reported using DrKonqi

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