Application: plasmashell (5.8.4)
 (Compiled from sources)
Qt Version: 5.7.0
Frameworks Version: 5.28.0
Operating System: Linux 4.8.10-gentoo x86_64
Distribution: "Gentoo Base System release 2.3"

-- Information about the crash:
I was typing a search string into K menu. Plasma crashes 99% of the time when I do that. It also crashes when the search is performed in Plasma search widget (Alt+F2).

This behaviour has been manifesting for quite some time (several months), but only now have I decided it was annoying enough to recompile everything with debugging symbols and issue this report.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
allocator_get_magazine_threshold (allocator=0x7f68735af2a0 <allocator>, allocator=0x7f68735af2a0 <allocator>, ix=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gslice.c:583
[Current thread is 1 (Thread 0x7f687c9cf840 (LWP 3465))]

Thread 23 (Thread 0x7f676bfff700 (LWP 13886)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x7f6778002990, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f6778002990, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f6778002990, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f6778002990, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f6778002990, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x7f6778002990) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f6778002990) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f676bfff700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f6784bb9700 (LWP 13885)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x7f676c0027d0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f676c0027d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f676c0027d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f676c0027d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f676c0027d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x7f676c0027d0) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f676c0027d0) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f6784bb9700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f67853ba700 (LWP 13884)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x7f6774003190, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f6774003190, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f6774003190, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f6774003190, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f6774003190, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x7f6774003190) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f6774003190) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f67853ba700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f6785bbb700 (LWP 13883)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x7f67880009d0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f67880009d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f67880009d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x7f67880009d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f67880009d0, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x7f67880009d0) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f67880009d0) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f6785bbb700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f67863bc700 (LWP 13882)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x2b3f460, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x2b3f460, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x2b3f460, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x2b3f460, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x2b3f460, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x2b3f460) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x2b3f460) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f67863bc700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f6786bbd700 (LWP 13881)):
[KCrash Handler]
#6  __memcpy_avx_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:245
#7  0x00007f6877b45890 in memcpy (__len=1946184112, __src=0x7f6877382cd4 <__GI___libc_malloc+84>, __dest=<optimized out>) at /usr/include/bits/string3.h:53
#8  QByteArray::QByteArray (this=0x7f6786bbc510, data=0x7f6877382cd4 <__GI___libc_malloc+84> "H\211\302H\205\300\017\204\310", size=1946184112) at tools/qbytearray.cpp:1497
#9  0x00007f678c057c97 in DBPostingIterator::DBPostingIterator (this=0x7f6774006850, data=<optimized out>, size=<optimized out>) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/engine/postingdb.cpp:176
#10 0x00007f678c057d51 in Baloo::PostingDB::iter (this=this@entry=0x7f6786bbc5f0, term=...) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/engine/postingdb.cpp:169
#11 0x00007f678c0621aa in Baloo::Transaction::postingIterator (this=this@entry=0x7f6786bbc9a0, query=...) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/engine/transaction.cpp:294
#12 0x00007f678c4b8c9f in Baloo::SearchStore::constructQuery (this=this@entry=0x7f6786bbca80, tr=tr@entry=0x7f6786bbc9a0, term=...) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/lib/searchstore.cpp:189
#13 0x00007f678c4b8f1a in Baloo::SearchStore::constructQuery (this=this@entry=0x7f6786bbca80, tr=tr@entry=0x7f6786bbc9a0, term=...) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/lib/searchstore.cpp:163
#14 0x00007f678c4b9e6f in Baloo::SearchStore::exec (this=this@entry=0x7f6786bbca80, term=..., offset=0, limit=10, sortResults=<optimized out>) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/lib/searchstore.cpp:75
#15 0x00007f678c4a925f in Baloo::Query::exec (this=this@entry=0x7f6786bbcb30) at /var/tmp/portage/kde-frameworks/baloo-5.28.0/work/baloo-5.28.0/src/lib/query.cpp:210
#16 0x00007f678c6ca369 in SearchRunner::match (this=this@entry=0x1c40bb0, context=..., type=..., category=...) at /var/tmp/portage/kde-plasma/plasma-workspace-5.8.4/work/plasma-workspace-5.8.4/runners/baloo/baloosearchrunner.cpp:101
#17 0x00007f678c6cb536 in SearchRunner::match (this=0x1c40bb0, context=...) at /var/tmp/portage/kde-plasma/plasma-workspace-5.8.4/work/plasma-workspace-5.8.4/runners/baloo/baloosearchrunner.cpp:170
#18 0x00007f67c107a148 in Plasma::AbstractRunner::performMatch (this=0x1c40bb0, localContext=...) at /var/tmp/portage/kde-frameworks/krunner-5.28.0/work/krunner-5.28.0/src/abstractrunner.cpp:131
#19 0x00007f67c07b9bd8 in ThreadWeaver::Executor::run (this=<optimized out>, job=..., thread=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/executor.cpp:52
#20 0x00007f67c07b8820 in ThreadWeaver::Job::execute (this=<optimized out>, self=..., th=0x7f677c002790) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/job.cpp:83
#21 0x00007f67c07b8320 in ThreadWeaver::Thread::run (this=0x7f677c002790) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:114
#22 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f677c002790) at thread/qthread_unix.cpp:344
#23 0x00007f6876bf73b4 in start_thread (arg=0x7f6786bbd700) at pthread_create.c:333
#24 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f67873be700 (LWP 13880)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x2259160, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x2259160, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x2259160, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x2259160, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x2259160, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x2259160) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x2259160) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f67873be700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f678ffff700 (LWP 13879)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4e0e8f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3cc0c30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f67c07b559b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x29c4fa0, th=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:594
#4  0x00007f67c07b63f0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x29c4fa0, th=<optimized out>, th@entry=0x49b7540, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:554
#5  0x00007f67c07ba408 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x49b7540, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:66
#6  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x49b7540, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#7  0x00007f67c07ba452 in ThreadWeaver::WorkingHardState::applyForWork (this=0x4752830, th=0x49b7540, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/workinghardstate.cpp:73
#8  0x00007f67c07b5509 in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x49b7540, wasBusy=<optimized out>) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/weaver.cpp:568
#9  0x00007f67c07b83d9 in ThreadWeaver::Thread::run (this=0x49b7540) at /var/tmp/portage/kde-frameworks/threadweaver-5.28.0/work/threadweaver-5.28.0/src/thread.cpp:103
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x49b7540) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f678ffff700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f678f7fe700 (LWP 13351)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x275e360) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x232fa88, mutex=mutex@entry=0x232fa80, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x232fa78) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x232fa00) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x232fa00) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x232fa00) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f678f7fe700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f67a56b7700 (LWP 1337)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x20d8db0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x2640ae8, mutex=mutex@entry=0x2640ae0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x2640ad8) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x2640a60) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x2640a60) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x2640a60) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67a56b7700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f67a61d2700 (LWP 1477)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x122ce60) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x122da18, mutex=mutex@entry=0x122da10, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x122da08) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x122d990) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x122d990) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x122d990) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67a61d2700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f67a7bfe700 (LWP 21980)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1f6b390) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x20ff528, mutex=mutex@entry=0x20ff520, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x20ff518) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x20ff4a0) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x20ff4a0) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x20ff4a0) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67a7bfe700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f67a6bfc700 (LWP 4764)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1470bd0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x142f938, mutex=mutex@entry=0x142f930, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x142f928) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x142f8b0) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x142f8b0) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x142f8b0) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67a6bfc700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f67a73fd700 (LWP 4564)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1f750e0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x1ea3c28, mutex=mutex@entry=0x1ea3c20, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x1ea3c18) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x1ea3ba0) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x1ea3ba0) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x1ea3ba0) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67a73fd700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f67b0bc1700 (LWP 4379)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x1939ab0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x193a168, mutex=mutex@entry=0x193a160, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x193a158) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x193a0e0) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0x193a0e0) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0x193a0e0) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67b0bc1700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f67c3fff700 (LWP 4248)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6877b43c1a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x980460) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0xbda788, mutex=mutex@entry=0xbda780, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f687ac4d955 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0xbda778) at scenegraph/qsgthreadedrenderloop.cpp:242
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0xbda700) at scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f687ac4e1ea in QSGRenderThread::run (this=0xbda700) at scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f6877b4360b in QThreadPrivate::start (arg=0xbda700) at thread/qthread_unix.cpp:344
#7  0x00007f6876bf73b4 in start_thread (arg=0x7f67c3fff700) at pthread_create.c:333
#8  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f67c927b700 (LWP 4246)):
#0  g_mutex_unlock (mutex=0x7f67c4000990) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthread-posix.c:1348
#1  0x00007f68732e68a0 in g_main_context_prepare (context=context@entry=0x7f67c4000990, priority=priority@entry=0x7f67c927ac08) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3569
#2  0x00007f68732e7193 in g_main_context_iterate (context=context@entry=0x7f67c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3909
#3  0x00007f68732e736c in g_main_context_iteration (context=0x7f67c4000990, may_block=may_block@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3990
#4  0x00007f6877d216db in QEventDispatcherGlib::processEvents (this=0x7f67c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6877cd521a in QEventLoop::exec (this=this@entry=0x7f67c927ad30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6877b3f3bb in QThread::exec (this=this@entry=0xddc4c0) at thread/qthread.cpp:507
#7  0x00007f687abe3822 in QQuickPixmapReader::run (this=0xddc4c0) at util/qquickpixmapcache.cpp:823
#8  0x00007f6877b4360b in QThreadPrivate::start (arg=0xddc4c0) at thread/qthread_unix.cpp:344
#9  0x00007f6876bf73b4 in start_thread (arg=0x7f67c927b700) at pthread_create.c:333
#10 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f68539da700 (LWP 4146)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f687c42b724 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f687c514180 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f687c42b769 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f6876bf73b4 in start_thread (arg=0x7f68539da700) at pthread_create.c:333
#4  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f685d950700 (LWP 4054)):
#0  0x00007f68773e89dd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f68732e7266 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f684c003070, timeout=<optimized out>, context=0x7f684c000990) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f684c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3924
#3  0x00007f68732e736c in g_main_context_iteration (context=0x7f684c000990, may_block=may_block@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3990
#4  0x00007f6877d216db in QEventDispatcherGlib::processEvents (this=0x7f684c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6877cd521a in QEventLoop::exec (this=this@entry=0x7f685d94fd70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6877b3f3bb in QThread::exec (this=this@entry=0x98c240) at thread/qthread.cpp:507
#7  0x00007f687a269145 in QQmlThreadPrivate::run (this=0x98c240) at qml/ftw/qqmlthread.cpp:147
#8  0x00007f6877b4360b in QThreadPrivate::start (arg=0x98c240) at thread/qthread_unix.cpp:344
#9  0x00007f6876bf73b4 in start_thread (arg=0x7f685d950700) at pthread_create.c:333
#10 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f685f7cc700 (LWP 3637)):
#0  0x00007f687332b049 in g_mutex_lock (mutex=mutex@entry=0x7f6854000990) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gthread-posix.c:1336
#1  0x00007f68732e6200 in g_main_context_acquire (context=0x7f6854000990) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3264
#2  0x00007f68732e7135 in g_main_context_iterate (context=context@entry=0x7f6854000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3879
#3  0x00007f68732e736c in g_main_context_iteration (context=0x7f6854000990, may_block=may_block@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3990
#4  0x00007f6877d216db in QEventDispatcherGlib::processEvents (this=0x7f68540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6877cd521a in QEventLoop::exec (this=this@entry=0x7f685f7cbd70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6877b3f3bb in QThread::exec (this=this@entry=0x920a40) at thread/qthread.cpp:507
#7  0x00007f687a269145 in QQmlThreadPrivate::run (this=0x920a40) at qml/ftw/qqmlthread.cpp:147
#8  0x00007f6877b4360b in QThreadPrivate::start (arg=0x920a40) at thread/qthread_unix.cpp:344
#9  0x00007f6876bf73b4 in start_thread (arg=0x7f685f7cc700) at pthread_create.c:333
#10 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6865365700 (LWP 3522)):
#0  0x00007f68773e49ed in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6873329da0 in read (__nbytes=16, __buf=0x7f6865364b60, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x8a3bb0) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gwakeup.c:210
#3  0x00007f68732e6d5c in g_main_context_check (context=context@entry=0x7f6858000990, max_priority=2147483647, fds=fds@entry=0x7f6858003020, n_fds=n_fds@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3707
#4  0x00007f68732e720c in g_main_context_iterate (context=context@entry=0x7f6858000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3926
#5  0x00007f68732e736c in g_main_context_iteration (context=0x7f6858000990, may_block=may_block@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3990
#6  0x00007f6877d216db in QEventDispatcherGlib::processEvents (this=0x7f68580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f6877cd521a in QEventLoop::exec (this=this@entry=0x7f6865364d50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#8  0x00007f6877b3f3bb in QThread::exec (this=this@entry=0x7f687cb514a0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:507
#9  0x00007f687cadf649 in QDBusConnectionManager::run (this=0x7f687cb514a0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:196
#10 0x00007f6877b4360b in QThreadPrivate::start (arg=0x7f687cb514a0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:344
#11 0x00007f6876bf73b4 in start_thread (arg=0x7f6865365700) at pthread_create.c:333
#12 0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6868c8e700 (LWP 3489)):
#0  0x00007f68773e89dd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f687b38a7df in poll (__timeout=-1, __nfds=1, __fds=0x7f6868c8dc90) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x73c490, cond=cond@entry=0x73c4d0, vector=vector@entry=0x0, count=count@entry=0x0) at /var/tmp/portage/x11-libs/libxcb-1.12-r2/work/libxcb-1.12/src/xcb_conn.c:479
#3  0x00007f687b38c469 in xcb_wait_for_event (c=0x73c490) at /var/tmp/portage/x11-libs/libxcb-1.12-r2/work/libxcb-1.12/src/xcb_in.c:693
#4  0x00007f686adf3259 in QXcbEventReader::run (this=0x746aa0) at qxcbconnection.cpp:1337
#5  0x00007f6877b4360b in QThreadPrivate::start (arg=0x746aa0) at thread/qthread_unix.cpp:344
#6  0x00007f6876bf73b4 in start_thread (arg=0x7f6868c8e700) at pthread_create.c:333
#7  0x00007f68773f1a4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f687c9cf840 (LWP 3465)):
#0  allocator_get_magazine_threshold (allocator=0x7f68735af2a0 <allocator>, allocator=0x7f68735af2a0 <allocator>, ix=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gslice.c:583
#1  thread_memory_magazine2_is_full (tmem=<optimized out>, ix=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gslice.c:834
#2  g_slice_free1 (mem_size=<optimized out>, mem_block=0x8a2a00) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gslice.c:1114
#3  0x00007f68732e36a2 in g_main_context_remove_poll_unlocked (context=0x7f68600016f0, fd=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:4404
#4  0x00007f68732e372c in block_source (source=source@entry=0x13c67f0) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3095
#5  0x00007f68732e705d in g_main_dispatch (context=0x7f68600016f0) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3184
#6  g_main_context_dispatch (context=context@entry=0x7f68600016f0) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3856
#7  0x00007f68732e72c8 in g_main_context_iterate (context=context@entry=0x7f68600016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3929
#8  0x00007f68732e736c in g_main_context_iteration (context=0x7f68600016f0, may_block=may_block@entry=1) at /var/tmp/portage/dev-libs/glib-2.50.2/work/glib-2.50.2/glib/gmain.c:3990
#9  0x00007f6877d216bf in QEventDispatcherGlib::processEvents (this=0x89b8c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#10 0x00007f6877cd521a in QEventLoop::exec (this=this@entry=0x7ffd04c7c250, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#11 0x00007f6877cdca3d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1261
#12 0x00007f6878002a1c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1639
#13 0x00007f68784dc325 in QApplication::exec () at kernel/qapplication.cpp:2975
#14 0x000000000041cbba in main (argc=<optimized out>, argv=<optimized out>) at /var/tmp/portage/kde-plasma/plasma-workspace-5.8.4/work/plasma-workspace-5.8.4/shell/main.cpp:166

Reported using DrKonqi