Bug 372274

Application: plasmashell (5.8.3)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.4.30-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:

Sometimes the plasmashell starts having high CPU usage between 50 - 90%, I couldn't spot what really triggers this behavior, I noticed this downloading torrents (using qBitTorrent) or big files (like games from steam), and today using unetbootin. All I do is stop the service and start it again, then it runs normaly untill restart.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5117e2b800 (LWP 2541))]

Thread 10 (Thread 0x7f50377ff700 (LWP 2557)):
#0  0x00007f51115364ed in read () at /usr/lib/libc.so.6
#1  0x00007f510481df81 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-9.0.so
#2  0x00007f5104ead50e in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007f5104eadf80 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f5104eae040 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f5104ebc069 in  () at /usr/lib/libpulse.so.0
#6  0x00007f510484ced8 in  () at /usr/lib/pulseaudio/libpulsecommon-9.0.so
#7  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f5040b01700 (LWP 2556)):
#0  0x00007f510c847db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f510c801c95 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c8026ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f5114f8c2d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f5052993700 (LWP 2550)):
#0  0x00007f510c801d58 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f510c8026ab in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5054ebf0a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f505fc06700 (LWP 2547)):
#0  0x00007f511153a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f510c802786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5115b2b856 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f50f2399700 (LWP 2546)):
#0  0x00007f5110d4310f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f51175bbac4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f51175bbb09 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f50f3fff700 (LWP 2545)):
#0  0x00007f51115364ed in read () at /usr/lib/libc.so.6
#1  0x00007f510c846a10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c802235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f510c802724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f5114f8c2d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f50f9cbd700 (LWP 2544)):
#0  0x00007f511153a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f510c802786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5114f8c2d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f50fb705700 (LWP 2543)):
#0  0x00007f510c847dd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f510c802171 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f510c802724 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f5111e5c72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5111c290f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f51129a9e55 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5101473700 (LWP 2542)):
#0  0x00007f511153a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f51164fb8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f51164fd679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f51031b0449 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f5111c2dd78 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f5110d3d454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f51115437df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f5117e2b800 (LWP 2541)):
[KCrash Handler]
#6  0x00007f5115bac5c4 in QQuickItem::isEnabled() const () at /usr/lib/libQt5Quick.so.5
#7  0x00007f5115bc935c in QQuickWindowPrivate::setFocusInScope(QQuickItem*, QQuickItem*, Qt::FocusReason, QFlags<QQuickWindowPrivate::FocusOption>) () at /usr/lib/libQt5Quick.so.5
#8  0x00007f5115bae3c8 in QQuickItem::setFocus(bool, Qt::FocusReason) () at /usr/lib/libQt5Quick.so.5
#9  0x00007f5115bc1ad0 in QQuickWindow::focusInEvent(QFocusEvent*) () at /usr/lib/libQt5Quick.so.5
#10 0x00007f5112361fe3 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#11 0x00007f5115bcf883 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#12 0x000000000042ce8d in  ()
#13 0x00007f5112d72e0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f5112d7a581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#15 0x00007f5111e07de0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#16 0x00007f5112357be9 in QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate::ActivatedWindowEvent*) () at /usr/lib/libQt5Gui.so.5
#17 0x00007f5112357f6d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#18 0x00007f5112335cab in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#19 0x00007f51031e62f0 in  () at /usr/lib/libQt5XcbQpa.so.5
#20 0x00007f510c802587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#21 0x00007f510c8027f0 in  () at /usr/lib/libglib-2.0.so.0
#22 0x00007f510c80289c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#23 0x00007f5111e5c70f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#24 0x00007f5111e0623a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#25 0x00007f5111e0e73c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#26 0x000000000041c8b2 in  ()
#27 0x00007f511147b291 in __libc_start_main () at /usr/lib/libc.so.6
#28 0x000000000041cc3a in _start ()

Possible duplicates by query: bug 372271, bug 371936, bug 371789, bug 371743, bug 370916.

Reported using DrKonqi