Bug 363182

Summary: krunner crashes when starting iceweasel after starting plasma desktop
Product: [Plasma] krunner Reporter: Arthur Marsh <arthur.marsh>
Component: generalAssignee: Kai Uwe Broulik <kde>
Status: RESOLVED DUPLICATE    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: 5.5.4   
Target Milestone: ---   
Platform: Debian unstable   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Arthur Marsh 2016-05-17 14:19:39 UTC 
Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.6.0+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
Restarted plasma desktop after kernel and other upgrades/reboot, used alt-F2 to start iceweasel, which started but krunner crashed. 2 krunner process remain but don't respond to alt-F2.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fa505d157c0 (LWP 4023))]

Thread 12 (Thread 0x7fa505652700 (LWP 4024)):
#0  0x00000030004dfdcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300380a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fa505651d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300380a382 in _xcb_conn_wait (c=c@entry=0x2644470, cond=cond@entry=0x26444b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300380bff7 in xcb_wait_for_event (c=0x2644470) at ../../src/xcb_in.c:693
#4  0x00007fa505ab1789 in QXcbEventReader::run() (this=0x26574c0) at qxcbconnection.cpp:1230
#5  0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x26574c0) at thread/qthread_unix.cpp:331
#6  0x0000003000c07454 in start_thread (arg=0x7fa505652700) at pthread_create.c:334
#7  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa4fc06c700 (LWP 4028)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa4ff758693 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fa4ff757db7 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003000c07454 in start_thread (arg=0x7fa4fc06c700) at pthread_create.c:334
#4  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa4fa5ee700 (LWP 4032)):
#0  0x00000030004dbdad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003002c8d740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa4fa5edbe0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x0000003002c8d740 in g_wakeup_acknowledge (wakeup=0x7fa5000015b0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x0000003002c49e84 in g_main_context_check (context=context@entry=0x7fa4f4000990, max_priority=2147483647, fds=fds@entry=0x7fa4f4003070, n_fds=n_fds@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x0000003002c4a340 in g_main_context_iterate (context=context@entry=0x7fa4f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x0000003002c4a4ac in g_main_context_iteration (context=0x7fa4f4000990, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa4f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x0000003017683d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa4fa5edde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00000030174a0854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#9  0x0000003047cd5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2a6fbf0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4fa5ee700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa4f0380700 (LWP 4954)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x32adce0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32adce0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32adce0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32adce0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32adce0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x32adce0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x32adce0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4f0380700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa4e7fff700 (LWP 4955)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x32c4fb0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32c4fb0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32c4fb0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32c4fb0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32c4fb0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x32c4fb0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x32c4fb0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4e7fff700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa4efb7f700 (LWP 4956)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x2da0440, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2da0440, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2da0440, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2da0440, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2da0440, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x2da0440) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2da0440) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4efb7f700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa4ef37e700 (LWP 4957)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x2da7bd0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2da7bd0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2da7bd0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2da7bd0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2da7bd0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x2da7bd0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2da7bd0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4ef37e700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa4eeb7d700 (LWP 4958)):
[KCrash Handler]
#6  0x00000030d8a0392a in  () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#7  0x00000030d8a04d34 in mdb_txn_begin () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#8  0x00000030c462101e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#9  0x00000030c460fff2 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#10 0x00007fa4f0798f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#11 0x00007fa4f0799879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#12 0x00007fa4f8610f40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x3330d10, localContext=...) at ../../src/abstractrunner.cpp:131
#13 0x00007fa4f83f47e0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#14 0x00007fa4f83f3330 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, self=..., th=0x7fa4e8002d90) at ../../src/job.cpp:83
#15 0x00007fa4f83f2dda in ThreadWeaver::Thread::run() (this=0x7fa4e8002d90) at ../../src/thread.cpp:114
#16 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7fa4e8002d90) at thread/qthread_unix.cpp:331
#17 0x0000003000c07454 in start_thread (arg=0x7fa4eeb7d700) at pthread_create.c:334
#18 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa4ee37c700 (LWP 4959)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x32c4940, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32c4940, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32c4940, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x32c4940, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x32c4940, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x32c4940) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x32c4940) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4ee37c700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa4edb7b700 (LWP 4960)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x7fa4e0002f90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x7fa4e0002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa4e0002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x7fa4e0002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa4e0002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x7fa4e0002f90) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7fa4e0002f90) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4edb7b700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa4ed37a700 (LWP 4961)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a8e370) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x290c710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa4f83f002b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2a5e150, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa4f83f0ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2a5e150, th=th@entry=0x2e97380, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa4f83f5038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2e97380, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2e97380, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa4f83f5092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2a69410, th=0x2e97380, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa4f83eff8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2e97380, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa4f83f2ea3 in ThreadWeaver::Thread::run() (this=0x2e97380) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2e97380) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7fa4ed37a700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa505d157c0 (LWP 4023)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300380a5d9 in _xcb_conn_wait (c=c@entry=0x2644470, cond=cond@entry=0x7ffc93df83d0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300380bd37 in wait_for_reply (c=c@entry=0x2644470, request=1051, e=e@entry=0x0) at ../../src/xcb_in.c:516
#3  0x000000300380be41 in xcb_wait_for_reply (c=c@entry=0x2644470, request=1051, e=e@entry=0x0) at ../../src/xcb_in.c:546
#4  0x0000003003810175 in xcb_intern_atom_reply (c=c@entry=0x2644470, cookie=..., e=e@entry=0x0) at xproto.c:2143
#5  0x00007fa4fb424489 in KWindowEffectsPrivateX11::slideWindow(unsigned long long, KWindowEffects::SlideFromLocation, int) (this=<optimized out>, id=41943050, location=KWindowEffects::TopEdge, offset=-1) at ../../../../src/platforms/xcb/kwindoweffects.cpp:127
#6  0x00000030aa6246af in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#7  0x00000030aa6263c3 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#8  0x0000000000409e8f in View::event(QEvent*) ()
#9  0x000000301db5affc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x2635d10, receiver=receiver@entry=0x7ffc93dfea30, e=e@entry=0x7ffc93df8880) at kernel/qapplication.cpp:3716
#10 0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc93dfe9c0, receiver=0x7ffc93dfea30, e=0x7ffc93df8880) at kernel/qapplication.cpp:3499
#11 0x00000030176865ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffc93dfe9c0, receiver=receiver@entry=0x7ffc93dfea30, event=event@entry=0x7ffc93df8880) at kernel/qcoreapplication.cpp:965
#12 0x000000301c0f979f in QWindow::setVisible(bool) (event=0x7ffc93df8880, receiver=0x7ffc93dfea30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#13 0x000000301c0f979f in QWindow::setVisible(bool) (this=0x7ffc93dfea30, visible=false) at kernel/qwindow.cpp:520
#14 0x00000030aa622420 in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#15 0x00000030aa6253f3 in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#16 0x00000030aa626b6b in PlasmaQuick::Dialog::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#17 0x000000000040a2c5 in View::qt_metacall(QMetaObject::Call, int, void**) ()
#18 0x0000003047c512b0 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x0000003047c1dfdd in QV4::QObjectWrapper::setProperty(QObject*, QV4::ExecutionContext*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x0000003047c1e658 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x0000003047c1e792 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x0000003047c2dcf2 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007fa4f80813e5 in  ()
#24 0x0000000000000000 in  ()

Reported using DrKonqi
Comment 1 Kai Uwe Broulik 2016-09-01 10:55:19 UTC 
Btw, reporting an issue *once* is sufficient.

*** This bug has been marked as a duplicate of bug 353342 ***