Bug 364419

Summary: Plasmashell crashed while moving application icons in icon-only taskbar
Product: [Plasma] plasmashell Reporter: rnet723
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED FIXED    
Severity: crash CC: bshah, notmart, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.6.4   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description rnet723 2016-06-17 13:31:49 UTC 
Application: plasmashell (5.6.4)

Qt Version: 5.6.1
Frameworks Version: 5.23.0
Operating System: Linux 4.1.21-14-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
Plasmashell crashed while moving application icons in icon-only taskbar

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f31abcb97c0 (LWP 12879))]

Thread 17 (Thread 0x7f31954bf700 (LWP 12880)):
#0  0x00007f31a51b4bbd in poll () at /lib64/libc.so.6
#1  0x00007f31aa0f7422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f31aa0f900f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f3197814579 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f318f4c4700 (LWP 12881)):
#0  0x00007f31a5ac6994 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007f31a189c8f1 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cdf8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f31a6833225 in  () at /usr/lib64/libQt5DBus.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f318dc86700 (LWP 12882)):
#0  0x00007f31a18decf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f31a189c8fc in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cdf8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f31a8bb7b88 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f317c938700 (LWP 12883)):
#0  0x00007f31a51b4bbd in poll () at /lib64/libc.so.6
#1  0x00007f31a189ce64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31a8bb7b88 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f3176f92700 (LWP 12884)):
#0  0x00007f31a5ac6183 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007f31a189c8f1 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cdf8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f31a8bb7b88 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f317574f700 (LWP 12885)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31ab3ad97b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f31ab3ad9a9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f30eeb68700 (LWP 12886)):
#0  0x00007f31a5ac6783 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007f31a189c4ad in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cd80 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f31a9739692 in  () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f30ddd9f700 (LWP 12887)):
#0  0x00007f31a18decf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f31a189cd55 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f31a5ac634b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31a58aef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f30df3eccf7 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f30d1c3f700 (LWP 13275)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f30cb778700 (LWP 13276)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#17 0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#18 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f30caf77700 (LWP 13277)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#14 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f30ca776700 (LWP 13278)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#18 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#22 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#23 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#24 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#25 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#26 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#27 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#28 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#29 0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#30 0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#31 0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#32 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f30c9f75700 (LWP 13279)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f30c9774700 (LWP 13280)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#15 0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#16 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f30c8f73700 (LWP 13281)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f30bbfff700 (LWP 13282)):
#0  0x00007f31a49c203f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f31a58b469b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f30e6eb148f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f30e6eb4e4a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#18 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007f30e6eb4e92 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#22 0x00007f30e6eaf4bb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#23 0x00007f30e6eb2aa6 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#24 0x00007f31a58b3a29 in  () at /usr/lib64/libQt5Core.so.5
#25 0x00007f31a49be0a4 in start_thread () at /lib64/libpthread.so.0
#26 0x00007f31a51bcfed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f31abcb97c0 (LWP 12879)):
[KCrash Handler]
#6  0x00007f31a8992c69 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f31a8bd6659 in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f31a8bfdf1c in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f31a8bfe76b in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f31a5aa0129 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f31a5b1606c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f30ed3d6d44 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007f30ed3d75d7 in  () at /usr/lib64/libtaskmanager.so.5
#14 0x00007f31a5a9fba1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f30ed3e07e8 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#16 0x00007f31a5a9fba1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#17 0x00007f30ed3e0918 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#18 0x00007f30ed3bf996 in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007f30ed3d2239 in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007f31a5aa01b3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#21 0x00007f31a86d41e2 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#22 0x00007f318de9e4dd in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#23 0x00007f31a5a73260 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#24 0x00007f3197812924 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#25 0x00007f319781497b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#26 0x00007f31a5aa1156 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f31a6c01e9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#28 0x00007f31a6c064fa in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007f31a5a75fb5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f31a5a77d9a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f31a5ac6ca3 in  () at /usr/lib64/libQt5Core.so.5
#32 0x00007f31a189cc84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#33 0x00007f31a189ced8 in  () at /usr/lib64/libglib-2.0.so.0
#34 0x00007f31a189cf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#35 0x00007f31a5ac632c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#36 0x00007f31a5a73fcb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f31a5a7beb6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#38 0x000000000041cf81 in main(int, char**) (argc=1, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.6.4/shell/main.cpp:139

Reported using DrKonqi
Comment 1 Marco Martin 2016-06-30 10:37:22 UTC 
fixed by the new task manager library