Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.6 x86_64
Distribution (Platform): Slackware Packages

-- Information about the crash:
- What I was doing when the application crashed:
I was looking at the process manager to kill a suspended app.

- Unusual behavior I noticed:
Plasma crashed. It didn't seem related to what I was doing with the process manager.

- Custom settings of the application:

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa69db707c0 (LWP 11936))]

Thread 8 (Thread 0x7fa686212700 (LWP 11937)):
#0  0x00007fa69561530d in poll () at /lib64/libc.so.6
#1  0x00007fa69b9bb102 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fa69b9bcc8f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fa68802f4b9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fa67efc3700 (LWP 12007)):
#0  0x00007fa69561530d in poll () at /lib64/libc.so.6
#1  0x00007fa690a33954 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fa696441c3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa69621913c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fa69a4a25d5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fa672196700 (LWP 12017)):
#0  0x00007fa690a33068 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fa690a33883 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fa696441c3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa69621913c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fa69a4a25d5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fa66bfff700 (LWP 12034)):
#0  0x00007fa690a76804 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fa690a33876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fa696441c3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa69621913c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fa69a4a25d5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fa66abd7700 (LWP 12051)):
#0  0x00007fa69498c36f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fa69d2751c4 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fa69d275209 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fa5e3fff700 (LWP 12759)):
#0  0x00007fa690a32f89 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fa690a33883 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fa696441c3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa69621913c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fa5d91f3e87 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fa5d80a6700 (LWP 12760)):
#0  0x00007fa690a76800 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fa690a32f70 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fa690a33883 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fa696441c3b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fa69621913c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fa69b025aa2 in  () at /usr/lib64/libQt5Quick.so.5
#8  0x00007fa69621df3f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fa694986684 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fa695620efd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fa69db707c0 (LWP 11936)):
[KCrash Handler]
#6  0x00007fa6977e26d0 in QWidget::windowHandle() const () at /usr/lib64/libQt5Widgets.so.5
#7  0x00007fa5dbbf33d1 in  () at /usr/lib64/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#8  0x00007fa696427648 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fa69641bf2b in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fa6977b911c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#11 0x00007fa6977be236 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007fa6963ee3f3 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#13 0x00007fa696440acd in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#14 0x00007fa696440fe1 in  () at /usr/lib64/libQt5Core.so.5
#15 0x00007fa690a33787 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#16 0x00007fa690a339b8 in  () at /usr/lib64/libglib-2.0.so.0
#17 0x00007fa690a33a5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#18 0x00007fa696441c1f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#19 0x00007fa6963ebf5a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007fa6963f3aed in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#21 0x00000000004349d7 in main ()

Reported using DrKonqi