Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Just using default search in the K Menu to start an app. (Never got to run it).

The crash occurs frequently (but not always). After the first failure it does not appear to happen again in the same session.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
[Current thread is 1 (Thread 0x7f9448531900 (LWP 2843))]

Thread 18 (Thread 0x7f935b7fe700 (LWP 3243)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x7f9344002b90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f9344002b90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f9344002b90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f9344002b90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f9344002b90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x7f9344002b90) at ../../src/thread.cpp:103
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x7f9344002b90) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f935b7fe700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f935bfff700 (LWP 3242)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x7f9354002f90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f9354002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f9354002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f9354002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f9354002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x7f9354002f90) at ../../src/thread.cpp:103
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x7f9354002f90) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f935bfff700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f9368bc4700 (LWP 3241)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x468d5d0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x468d5d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x468d5d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x468d5d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x468d5d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x468d5d0) at ../../src/thread.cpp:103
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x468d5d0) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f9368bc4700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f93693c5700 (LWP 3240)):
[KCrash Handler]
#6  memcpy (__len=96, __src=0x18, __dest=0x7f934c003ab8) at /usr/include/x86_64-linux-gnu/bits/string3.h:53
#7  mdb_txn_renew0 (txn=txn@entry=0x7f934c003a30) at mdb.c:2719
#8  0x00007f937024ef14 in mdb_txn_begin (env=0x7f9344003a20, parent=0x0, flags=131072, ret=0x7f93693c48c8) at mdb.c:2850
#9  0x00007f93708c7bbe in Baloo::SearchStore::exec (this=this@entry=0x7f93693c49b0, term=..., offset=0, limit=10, sortResults=<optimized out>) at /build/baloo-kf5-wIK3t6/baloo-kf5-5.18.0/src/lib/searchstore.cpp:74
#10 0x00007f93708b6bc2 in Baloo::Query::exec (this=this@entry=0x7f93693c4a60) at /build/baloo-kf5-wIK3t6/baloo-kf5-5.18.0/src/lib/query.cpp:210
#11 0x00007f9370ad7f2f in SearchRunner::match (this=this@entry=0x455e680, context=..., type=..., category=...) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/runners/baloo/baloosearchrunner.cpp:98
#12 0x00007f9370ad8879 in SearchRunner::match (this=0x455e680, context=...) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/runners/baloo/baloosearchrunner.cpp:160
#13 0x00007f938c78e540 in Plasma::AbstractRunner::performMatch (this=0x455e680, localContext=...) at ../../src/abstractrunner.cpp:131
#14 0x00007f9387be6c90 in ThreadWeaver::Executor::run (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#15 0x00007f9387be57e0 in ThreadWeaver::Job::execute (this=<optimized out>, self=..., th=0x429d1a0) at ../../src/job.cpp:83
#16 0x00007f9387be528a in ThreadWeaver::Thread::run (this=0x429d1a0) at ../../src/thread.cpp:114
#17 0x00007f944333c7be in QThreadPrivate::start (arg=0x429d1a0) at thread/qthread_unix.cpp:331
#18 0x00007f944242970a in start_thread (arg=0x7f93693c5700) at pthread_create.c:333
#19 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f9369bc6700 (LWP 3239)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x7f935c003190, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#10 0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f935c003190, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#11 0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x7f935c003190) at ../../src/thread.cpp:103
#12 0x00007f944333c7be in QThreadPrivate::start (arg=0x7f935c003190) at thread/qthread_unix.cpp:331
#13 0x00007f944242970a in start_thread (arg=0x7f9369bc6700) at pthread_create.c:333
#14 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f936a3c7700 (LWP 3238)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x7f93640025d0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f93640025d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f93640025d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x7f93640025d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x7f93640025d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x7f93640025d0) at ../../src/thread.cpp:103
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x7f93640025d0) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f936a3c7700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f936abc8700 (LWP 3237)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x474ef10, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x474ef10, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x474ef10, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x474ef10, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x474ef10, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x474ef10, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#10 0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x474ef10, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#11 0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x474ef10) at ../../src/thread.cpp:103
#12 0x00007f944333c7be in QThreadPrivate::start (arg=0x474ef10) at thread/qthread_unix.cpp:331
#13 0x00007f944242970a in start_thread (arg=0x7f936abc8700) at pthread_create.c:333
#14 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f936b3c9700 (LWP 3236)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42ab410) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x42b0aa0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f9387be250b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked (this=this@entry=0x42a9e90, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f9387be32bf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait (this=0x42a9e90, th=th@entry=0x42acd50, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f9387be74e8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x42acd50, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x42acd50, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x42acd50, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x42acd50, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f9387be7542 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3f27160, th=0x42acd50, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#10 0x00007f9387be246d in ThreadWeaver::Weaver::applyForWork (this=<optimized out>, th=0x42acd50, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#11 0x00007f9387be5353 in ThreadWeaver::Thread::run (this=0x42acd50) at ../../src/thread.cpp:103
#12 0x00007f944333c7be in QThreadPrivate::start (arg=0x42acd50) at thread/qthread_unix.cpp:331
#13 0x00007f944242970a in start_thread (arg=0x7f936b3c9700) at pthread_create.c:333
#14 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f9372bdf700 (LWP 3233)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3cb2d10) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4355900, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f94465db92e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f94465dc1b3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f944333c7be in QThreadPrivate::start (arg=0x4355880) at thread/qthread_unix.cpp:331
#6  0x00007f944242970a in start_thread (arg=0x7f9372bdf700) at pthread_create.c:333
#7  0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f937a2fa700 (LWP 3200)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9446f4ef10 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#2  0x00007f9446f4f3a9 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#3  0x00007f943ee1c2a8 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#4  0x00007f943edea0ae in ?? () from /usr/lib/nvidia-340/libGL.so.1
#5  0x00007f943a274c77 in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#6  0x00007f943a2c653f in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#7  0x00007f943a2ce7af in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#8  0x00007f943a237d7c in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#9  0x00007f9439eff81d in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#10 0x00007f9439f6a19d in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#11 0x00007f943a295036 in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#12 0x00007f9439ef5622 in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#13 0x00007f9439ef661c in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.98
#14 0x00007f941989f8bf in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#15 0x00007f944354bbaf in QtPrivate::QSlotObjectBase::call (a=0x7f937a2f9ac0, r=0x40b9770, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#16 QMetaObject::activate (sender=0x26a7210, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#17 0x00007f9446602ece in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f94465d69c8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f94465dc08c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f944333c7be in QThreadPrivate::start (arg=0x3a90350) at thread/qthread_unix.cpp:331
#21 0x00007f944242970a in start_thread (arg=0x7f937a2fa700) at pthread_create.c:333
#22 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f9381b5e700 (LWP 3192)):
#0  0x00007f943fa20ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f943f9dbddc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f943f9dc340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f943f9dc4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f94435737eb in QEventDispatcherGlib::processEvents (this=0x7f937c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f944351ab4a in QEventLoop::exec (this=this@entry=0x7f9381b5dc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f9443337834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f938403c7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f944333c7be in QThreadPrivate::start (arg=0x394f7f0) at thread/qthread_unix.cpp:331
#9  0x00007f944242970a in start_thread (arg=0x7f9381b5e700) at pthread_create.c:333
#10 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f938f90c700 (LWP 2941)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f944333da5b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2c60380) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x259e310, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f94465db92e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f94465dc1b3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f944333c7be in QThreadPrivate::start (arg=0x259e290) at thread/qthread_unix.cpp:331
#6  0x00007f944242970a in start_thread (arg=0x7f938f90c700) at pthread_create.c:333
#7  0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f9418aa3700 (LWP 2937)):
#0  0x00007f943fa20ae4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f943f9dc391 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f943f9dc4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94435737eb in QEventDispatcherGlib::processEvents (this=0x7f93900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f944351ab4a in QEventLoop::exec (this=this@entry=0x7f9418aa2c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f9443337834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f9446565ed6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f944333c7be in QThreadPrivate::start (arg=0x2cd4330) at thread/qthread_unix.cpp:331
#8  0x00007f944242970a in start_thread (arg=0x7f9418aa3700) at pthread_create.c:333
#9  0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f941b3ef700 (LWP 2914)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9447f84bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f9447f84c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f944242970a in start_thread (arg=0x7f941b3ef700) at pthread_create.c:333
#4  0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f9420e4c700 (LWP 2901)):
#0  0x00007f9442c4269d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f943b7e1f45 in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.98
#2  0x00007f943fa1f740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f943f9dbe84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f943f9dc340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f943f9dc4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f94435737eb in QEventDispatcherGlib::processEvents (this=0x7f94140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007f944351ab4a in QEventLoop::exec (this=this@entry=0x7f9420e4bca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f9443337834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f9445bdf3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x2984d50) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f9420e4c700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f9422d0d700 (LWP 2896)):
#0  0x00007f9442c46b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f943f9dc39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f943f9dc4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94435737eb in QEventDispatcherGlib::processEvents (this=0x7f941c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f944351ab4a in QEventLoop::exec (this=this@entry=0x7f9422d0cca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f9443337834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f9445bdf3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f944333c7be in QThreadPrivate::start (arg=0x2731750) at thread/qthread_unix.cpp:331
#8  0x00007f944242970a in start_thread (arg=0x7f9422d0d700) at pthread_create.c:333
#9  0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f942afc9700 (LWP 2879)):
#0  0x00007f9442c4269d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f943b7e1f45 in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.98
#2  0x00007f943fa1f740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f943f9dbe84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f943f9dc340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f943f9dc4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f94435737eb in QEventDispatcherGlib::processEvents (this=0x7f94240008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007f944351ab4a in QEventLoop::exec (this=this@entry=0x7f942afc8ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f9443337834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f9445bdf3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f944333c7be in QThreadPrivate::start (arg=0x25a8bf0) at thread/qthread_unix.cpp:331
#11 0x00007f944242970a in start_thread (arg=0x7f942afc9700) at pthread_create.c:333
#12 0x00007f9442c5282d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f9448531900 (LWP 2843)):
#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f944242be92 in __GI___pthread_mutex_lock (mutex=0x7f943f0936a0) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007f943ee0fe90 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#3  0x00007f943ee121a3 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#4  0x00007f943ee1233a in ?? () from /usr/lib/nvidia-340/libGL.so.1
#5  0x00007f943eded105 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#6  0x00007f94484fac35 in _dl_fini () at dl-fini.c:240
#7  0x00007f9442b85ff8 in __run_exit_handlers (status=1, listp=0x7f9442f0f5f8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#8  0x00007f9442b86045 in __GI_exit (status=<optimized out>) at exit.c:104
#9  0x00007f9446f63ac5 in _XDefaultIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#10 0x00007f943454c1fe in ?? ()
#11 0x0000000000000002 in ?? ()
#12 0x0000000000000000 in ?? ()

Possible duplicates by query: bug 364938, bug 363382, bug 360154, bug 358976, bug 358016.

Reported using DrKonqi