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.
Do you have systemloadviewer applet on your desktop?
Yes I have, and when I remove it the bug seems not to occur anymore.
Thanks! *** This bug has been marked as a duplicate of bug 345141 ***