Bug 348745

Summary: Plasmashell crashed after switching activities several times with META + TAB
Product: [Plasma] plasmashell Reporter: raphael0202
Component: Activity SwitcherAssignee: Ivan Čukić <ivan.cukic>
Status: RESOLVED DUPLICATE    
Severity: normal CC: bhush94, plasma-bugs
Priority: NOR    
Version: 5.3.0   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description raphael0202 2015-06-05 13:53:43 UTC 
The bug can be reproduced by quickly switch several times between 2 activities using META + TAB.
Stack trace:

Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f75749d0900 (LWP 2126))]

Thread 42 (Thread 0x7f7555522700 (LWP 2128)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7572c89182 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f7572c8ad07 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f755706a5e9 in QXcbEventReader::run() () from /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 41 (Thread 0x7f754ef64700 (LWP 2130)):
#0  0x00007f7567a94ee4 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f639 in g_main_context_query () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd37 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 40 (Thread 0x7f7543fe9700 (LWP 2131)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 39 (Thread 0x7f7541cdc700 (LWP 2135)):
#0  0x00007f756c8b312e in clock_gettime () from /lib64/libc.so.6
#1  0x00007f756d554f86 in qt_gettime() () from /lib64/libQt5Core.so.5
#2  0x00007f756d6d81e9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#3  0x00007f756d6d8755 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#4  0x00007f756d6d9b3e in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#5  0x00007f7567a4f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#6  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#7  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#8  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#9  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#10 0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#11 0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#12 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#13 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#14 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 38 (Thread 0x7f7540beb700 (LWP 2136)):
#0  0x00007f75748605c0 in __tls_get_addr () from /lib64/ld-linux-x86-64.so.2
#1  0x00007f756d4a2e22 in QThreadData::current(bool) () from /lib64/libQt5Core.so.5
#2  0x00007f756d6d9fa1 in postEventSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#3  0x00007f7567a4f801 in g_main_context_check () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#5  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#6  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#8  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#9  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#10 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#11 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 37 (Thread 0x7f75337ff700 (LWP 2137)):
#0  0x00007f7567a242b4 in g_ptr_array_set_size () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f2b1 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 36 (Thread 0x7f75327fe700 (LWP 2138)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 35 (Thread 0x7f75317fd700 (LWP 2139)):
#0  0x00007f756c8b312e in clock_gettime () from /lib64/libc.so.6
#1  0x00007f756d554f86 in qt_gettime() () from /lib64/libQt5Core.so.5
#2  0x00007f756d6d81e9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#3  0x00007f756d6d8755 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#4  0x00007f756d6d9b3e in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#5  0x00007f7567a4f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#6  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#7  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#8  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#9  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#10 0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#11 0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#12 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#13 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#14 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7f751ffff700 (LWP 2140)):
#0  0x00007ffcb9f7b92a in ?? ()
#1  0x00007ffcb9f7bcc1 in clock_gettime ()
#2  0x00007f756c8b313d in clock_gettime () from /lib64/libc.so.6
#3  0x00007f756d554f86 in qt_gettime() () from /lib64/libQt5Core.so.5
#4  0x00007f756d6d81e9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#5  0x00007f756d6d8755 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#6  0x00007f756d6d9b3e in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7567a4f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#14 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#15 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#16 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7f751effe700 (LWP 2141)):
#0  0x00007f756d49c0f8 in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f756d6d9fb9 in postEventSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#2  0x00007f7567a4f801 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 32 (Thread 0x7f751dddd700 (LWP 2142)):
#0  0x00007f7567a4ce90 in g_source_iter_next () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f72a in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 31 (Thread 0x7f751cddc700 (LWP 2143)):
#0  0x00007f7567a94ec9 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f369 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 30 (Thread 0x7f750f7ff700 (LWP 2144)):
#0  0x00007f756d6d9fe4 in postEventSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#1  0x00007f7567a4f801 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 29 (Thread 0x7f750cf33700 (LWP 2145)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 28 (Thread 0x7f750351b700 (LWP 2146)):
#0  0x00007f756d49c10a in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f756d6d9fb9 in postEventSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#2  0x00007f7567a4f801 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 27 (Thread 0x7f7502472700 (LWP 2147)):
#0  0x00007f756b33f530 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f75740ea6d4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007f75740ea719 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7f7501b59700 (LWP 2148)):
#0  0x00007f756c8952ed in read () from /lib64/libc.so.6
#1  0x00007f7567a93b00 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4f8b4 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7f74773e5700 (LWP 2149)):
#0  0x00007f7567a4f3fa in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7f7475cf9700 (LWP 2150)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571d94ab6 in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7f7469d3b700 (LWP 2153)):
#0  0x00007f7567a4f80c in g_main_context_check () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f745ef3d700 (LWP 2155)):
#0  0x00007f756c8952ed in read () from /lib64/libc.so.6
#1  0x00007f7567a93b00 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4f8b4 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f745de3a700 (LWP 2156)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f745cd37700 (LWP 2157)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f744f7ff700 (LWP 2158)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f744e7fe700 (LWP 2159)):
#0  0x00007f7567a4f232 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f744d7fd700 (LWP 2160)):
#0  0x00007f7567a94ee4 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f78a in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f743ffff700 (LWP 2161)):
#0  0x00007f7567a4f7e8 in g_main_context_check () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f743effe700 (LWP 2162)):
#0  0x00007f7567a94ec9 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4eea4 in g_main_context_release () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd76 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f743dffd700 (LWP 2163)):
#0  0x00007f7567a94ec9 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f80c in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f743cffc700 (LWP 2164)):
#0  0x00007ffcb9f7b93c in ?? ()
#1  0x00007ffcb9f7bcc1 in clock_gettime ()
#2  0x00007f756c8b313d in clock_gettime () from /lib64/libc.so.6
#3  0x00007f756d554f86 in qt_gettime() () from /lib64/libQt5Core.so.5
#4  0x00007f756d6d81e9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#5  0x00007f756d6d8755 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#6  0x00007f756d6d9b3e in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f7567a4f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#14 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#15 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#16 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f742de56700 (LWP 2165)):
#0  0x00007f756d49c10a in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f756d6d9fb9 in postEventSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#2  0x00007f7567a4f801 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f743c3ac397 in KCupsConnection::run() () from /lib64/libkcupslib.so
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f7423d35700 (LWP 2169)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f7422c64700 (LWP 2170)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f7421b63700 (LWP 2171)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f7420a62700 (LWP 2172)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f74137ff700 (LWP 2173)):
#0  0x00007f756c8952ed in read () from /lib64/libc.so.6
#1  0x00007f7567a93b00 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4f8b4 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f74127fe700 (LWP 2174)):
#0  0x00007f7567a242b4 in g_ptr_array_set_size () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a4f2b1 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f741174d700 (LWP 2175)):
#0  0x00007f756c8952ed in read () from /lib64/libc.so.6
#1  0x00007f7567a93b00 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4f8b4 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f7567a4fd60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f73fffff700 (LWP 2176)):
#0  0x00007f756c89966d in poll () from /lib64/libc.so.6
#1  0x00007f7567a4fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f73f5e42700 (LWP 2193)):
#0  0x00007f7567a94aa0 in g_private_get () from /lib64/libglib-2.0.so.0
#1  0x00007f7567a77550 in g_thread_self () from /lib64/libglib-2.0.so.0
#2  0x00007f7567a4febd in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7571726935 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f73f4d3b700 (LWP 2194)):
#0  0x00007f75748605b5 in __tls_get_addr () from /lib64/ld-linux-x86-64.so.2
#1  0x00007f756d4a2e22 in QThreadData::current(bool) () from /lib64/libQt5Core.so.5
#2  0x00007f756d6d9cba in postEventSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#3  0x00007f7567a4f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#4  0x00007f7567a4fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#5  0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#6  0x00007f756d6da75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#8  0x00007f756d49eff4 in QThread::exec() () from /lib64/libQt5Core.so.5
#9  0x00007f7571d94ab6 in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#10 0x00007f756d4a3ede in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#11 0x00007f756b33a555 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f756c8a4f3d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f75749d0900 (LWP 2126)):
[KCrash Handler]
#5  0x00007f757168b938 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) () from /lib64/libQt5Qml.so.5
#6  0x00007f75716a50d4 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::ValueRef, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /lib64/libQt5Qml.so.5
#7  0x00007f75717163ec in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /lib64/libQt5Qml.so.5
#8  0x00007f7571716b4e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /lib64/libQt5Qml.so.5
#9  0x00007f75716f0f37 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /lib64/libQt5Qml.so.5
#10 0x00007f7571690b6c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /lib64/libQt5Qml.so.5
#11 0x00007f756d6b3550 in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#12 0x00007f757168ac07 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () from /lib64/libQt5Qml.so.5
#13 0x00007f7571667bca in CallMethod(QObject*, int, int, int, int*, QV8Engine*, QV4::CallData*) [clone .constprop.153] () from /lib64/libQt5Qml.so.5
#14 0x00007f7571668f85 in CallPrecise(QObject*, QQmlPropertyData const&, QV8Engine*, QV4::CallData*) [clone .constprop.150] () from /lib64/libQt5Qml.so.5
#15 0x00007f75716696a5 in QV4::QObjectMethod::callInternal(QV4::CallData*) () from /lib64/libQt5Qml.so.5
#16 0x00007f7571676dfe in QV4::Runtime::callActivationProperty(QV4::ExecutionContext*, QV4::String*, QV4::CallData*) () from /lib64/libQt5Qml.so.5
#17 0x00007f7474838da6 in ?? ()
#18 0x00007ffcb9f743f0 in ?? ()
#19 0x00000000040b4120 in ?? ()
#20 0x00007ffcb9f743f0 in ?? ()
#21 0x00007f750251b058 in ?? ()
#22 0x00007f750c02a000 in ?? ()
#23 0x00007f75024b1d50 in ?? ()
#24 0x000000000189b610 in ?? ()
#25 0x00007f75024b1d50 in ?? ()
#26 0x00007f750c02a000 in ?? ()
#27 0x00007f757162a286 in QV4::SimpleScriptFunction::call(QV4::Managed*, QV4::CallData*) () from /lib64/libQt5Qml.so.5
#28 0x00007f757170d6a8 in QQmlJavaScriptExpression::evaluate(QQmlContextData*, QV4::ValueRef, QV4::CallData*, bool*) () from /lib64/libQt5Qml.so.5
#29 0x00007f75716b2236 in QQmlBoundSignalExpression::evaluate(void**) () from /lib64/libQt5Qml.so.5
#30 0x00007f75716b2a7b in QQmlBoundSignal_callback(QQmlNotifierEndpoint*, void**) () from /lib64/libQt5Qml.so.5
#31 0x00007f75716f0f37 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /lib64/libQt5Qml.so.5
#32 0x00007f7571690b6c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /lib64/libQt5Qml.so.5
#33 0x00007f756d6b3550 in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#34 0x00007f754d944d17 in Plasma::DataSource::newData(QString const&, QMap<QString, QVariant> const&) () from /usr/lib64/qt5/qml/org/kde/plasma/core/libcorebindingsplugin.so
#35 0x00007f754d9309ca in Plasma::DataSource::dataUpdated(QString const&, QMap<QString, QVariant> const&) () from /usr/lib64/qt5/qml/org/kde/plasma/core/libcorebindingsplugin.so
#36 0x00007f754d94613d in Plasma::DataSource::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/qt5/qml/org/kde/plasma/core/libcorebindingsplugin.so
#37 0x00007f756d6b3c46 in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#38 0x00007f7572a1bb6f in Plasma::SignalRelay::timerEvent(QTimerEvent*) () from /lib64/libKF5Plasma.so.5
#39 0x00007f756d6b4ac3 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#40 0x00007f756ec147cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#41 0x00007f756ec19e70 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#42 0x00007f756d68324b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#43 0x00007f756d6d955d in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#44 0x00007f756d6d9a61 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#45 0x00007f7567a4fa8a in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#46 0x00007f7567a4fe20 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#47 0x00007f7567a4fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#48 0x00007f756d6da73f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#49 0x00007f756d680a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#50 0x00007f756d6885fc in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#51 0x000000000042eb0f in main ()


Reproducible: Always

Steps to Reproduce:
1. Open a second activity
2. Swith between the 2 activities using META + TAB rapidly (+5 times)

Actual Results:  
Plasmashell crashed.
Comment 1 Bhushan Shah 2015-06-05 13:55:07 UTC 
Do you have systemloadviewer applet on your desktop?
Comment 2 raphael0202 2015-06-05 13:59:38 UTC 
Yes I have, and when I remove it the bug seems not to occur anymore.
Comment 3 Bhushan Shah 2015-06-05 14:00:35 UTC 
Thanks!

*** This bug has been marked as a duplicate of bug 345141 ***