Bug 374521

Summary: Plasma breaks suddenly when closing kde apps.
Product: [Plasma] plasmashell Reporter: Carlos Henrique Merces Moreira <ch.mercesmoreira>
Component: Task Manager and Icons-Only Task ManagerAssignee: Eike Hein <hein>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, kde, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.8.5   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Carlos Henrique Merces Moreira 2017-01-04 01:47:10 UTC 
Application: plasmashell (5.8.5)

Qt Version: 5.7.1
Frameworks Version: 5.29.0
Operating System: Linux 4.9.0-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:
I finished my day work, and tried to close multiple Okular instances that were opened, as soon as I started doing this the system screen blinked and the task bar dissapeared, but after few seconds later everything is back to normal again.

- Unusual behavior I noticed:

The taskbar dissapeared, sometimes this bug happens in other ocassions and I'm unable to open other apps, so I need to reboot my system, but in this particular case the plasma restarted automatically and I was able to use the system normally after this bug happened.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb8b2d26800 (LWP 681))]

Thread 16 (Thread 0x7fb7d0977700 (LWP 2361)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fb7d1178700 (LWP 2360)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#22 0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#23 0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#24 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fb7d1979700 (LWP 2359)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fb7d217a700 (LWP 2358)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fb7d297b700 (LWP 2357)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#22 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#23 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#24 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#25 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#26 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#27 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#28 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#29 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#30 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#31 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#32 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#33 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#34 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#35 0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#36 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#37 0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#38 0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#39 0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#40 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fb7d317c700 (LWP 2356)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fb7d397d700 (LWP 2355)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fb7d969e700 (LWP 2354)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8acb13bab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fb7f39701c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fb7f3974988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fb7f39749e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fb7f396f263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fb7f39721f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fb7ed196700 (LWP 977)):
#0  0x00007fb8a76b16fa in g_ptr_array_set_size () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb8a76dcbe1 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb8a76dd6ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb8acd422db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb8acb0e063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb7ef6c30a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fb7fa7a1700 (LWP 854)):
#0  0x00007fb8a7722dd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb8a76dd31a in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb8a76dd7f0 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb8acd422db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb8acb0e063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb8b0a0f4b6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fb88935c700 (LWP 835)):
#0  0x00007fb8abc2810f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fb8b24bb1f4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fb8b24bb239 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fb88b16a700 (LWP 817)):
#0  0x00007fb8ac41f48d in poll () at /usr/lib/libc.so.6
#1  0x00007fb8a76dd786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb8acd422db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8acb0e063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb8afe70e75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fb898c4d700 (LWP 803)):
#0  0x00007fb8a76dd171 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb8a76dd724 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb8acd422db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8acb0e063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fb8afe70e75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fb89a695700 (LWP 728)):
#0  0x00007fb8a7722db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb8a76dc670 in g_main_context_acquire () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb8a76dd635 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb8acd422db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb8acb0e063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb8ad889de5 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fb89c2c7700 (LWP 702)):
#0  0x00007fb8ac41f48d in poll () at /usr/lib/libc.so.6
#1  0x00007fb8b13e18e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fb8b13e3679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fb89e004789 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fb8acb12cf8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fb8abc22454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fb8ac4287df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fb8b2d26800 (LWP 681)):
[KCrash Handler]
#6  0x00007fb8accb40f0 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fb8accb43d9 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fb8accbc3c9 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb8acd190c9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007fb8acd90c74 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007fb8acc954fb in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#12 0x00007fb7f3305375 in  () at /usr/lib/libtaskmanager.so.6
#13 0x00007fb7f3308549 in  () at /usr/lib/libtaskmanager.so.6
#14 0x00007fb8acd190c9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007fb8acd90c04 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#16 0x00007fb8acc94da3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#17 0x00007fb8accb9b15 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007fb8accb9d14 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007fb8accbc3a8 in  () at /usr/lib/libQt5Core.so.5
#20 0x00007fb8acd190c9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#21 0x00007fb8acd90c04 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#22 0x00007fb8acc94da3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#23 0x00007fb7f8bbc772 in  () at /usr/lib/libKF5ItemModels.so.5
#24 0x00007fb8acd190c9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#25 0x00007fb8acd90c04 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#26 0x00007fb8acc94da3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#27 0x00007fb8accaf2f0 in  () at /usr/lib/libQt5Core.so.5
#28 0x00007fb8acd190c9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#29 0x00007fb8acd90c04 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#30 0x00007fb8acc94da3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#31 0x00007fb7f3322519 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib/libtaskmanager.so.6
#32 0x00007fb8acd1943e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#33 0x00007fb8af993712 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib/libKF5WindowSystem.so.5
#34 0x00007fb89906deb6 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#35 0x00007fb8af98bf47 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/libKF5WindowSystem.so.5
#36 0x00007fb8af98d3ec in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib/libKF5WindowSystem.so.5
#37 0x00007fb8af98d712 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib/libKF5WindowSystem.so.5
#38 0x00007fb89906d416 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#39 0x00007fb8acceae7f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#40 0x00007fb89e005f54 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#41 0x00007fb89e006c35 in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#42 0x00007fb8acd19f29 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#43 0x00007fb8adc5235c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#44 0x00007fb8adc59ad1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#45 0x00007fb8acced8e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#46 0x00007fb8accf006d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#47 0x00007fb8acd41eb3 in  () at /usr/lib/libQt5Core.so.5
#48 0x00007fb8a76dd587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#49 0x00007fb8a76dd7f0 in  () at /usr/lib/libglib-2.0.so.0
#50 0x00007fb8a76dd89c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#51 0x00007fb8acd422bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#52 0x00007fb8accebd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#53 0x00007fb8accf423c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#54 0x000000000041c9d2 in  ()
#55 0x00007fb8ac360291 in __libc_start_main () at /usr/lib/libc.so.6
#56 0x000000000041cd5a in _start ()

Reported using DrKonqi
Comment 1 Christoph Feck 2017-01-04 21:46:03 UTC 

*** This bug has been marked as a duplicate of bug 342763 ***