361663 – krunner crashes when starting iceweasel with alt-F2

Bug 361663 - krunner crashes when starting iceweasel with alt-F2

Summary: krunner crashes when starting iceweasel with alt-F2

Status:	RESOLVED NOT A BUG

Alias:	None

Product:	krunner
Classification:	Plasma
Component:	general (other bugs)
Version First Reported In:	5.5.4
Platform:	Debian unstable Linux

Importance:	NOR crash
Target Milestone:	---
Assignee:	Kai Uwe Broulik

URL:
Keywords:	drkonqi

Depends on:
Blocks:

Reported:	2016-04-12 12:49 UTC by Arthur Marsh
Modified:	2016-09-07 08:36 UTC (History)
CC List:	0 users

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

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Description Arthur Marsh 2016-04-12 12:49:00 UTC

Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.6.0-rc3+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
starting KDE plasma for the first time since a power failure - krunner crashed but iceweasel started successfully.

The crash can be reproduced sometimes.

-- 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 0x7f4d627927c0 (LWP 4056))]

Thread 12 (Thread 0x7f4d620d0700 (LWP 4057)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300300a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f4d620cfd00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300300a382 in _xcb_conn_wait (c=c@entry=0x1d30470, cond=cond@entry=0x1d304b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300300bff7 in xcb_wait_for_event (c=0x1d30470) at ../../src/xcb_in.c:693
#4  0x00007f4d6252f789 in QXcbEventReader::run() (this=0x1d434c0) at qxcbconnection.cpp:1230
#5  0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x1d434c0) at thread/qthread_unix.cpp:331
#6  0x0000003001007454 in start_thread (arg=0x7f4d620d0700) at pthread_create.c:334
#7  0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f4d58f24700 (LWP 4060)):
#0  0x000000300100d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4d5b97b213 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f4d5b97a937 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003001007454 in start_thread (arg=0x7f4d58f24700) at pthread_create.c:334
#4  0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f4d576e4700 (LWP 4063)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003003c4a32c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f4d50003070, timeout=<optimized out>, context=0x7f4d50000990) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x0000003003c4a32c in g_main_context_iterate (context=context@entry=0x7f4d50000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x0000003003c4a43c in g_main_context_iteration (context=0x7f4d50000990, may_block=may_block@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f4d500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x0000003017683d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f4d576e3de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00000030174a0854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x0000003046ed5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x20a2630) at thread/qthread_unix.cpp:331
#9  0x0000003001007454 in start_thread (arg=0x7f4d576e4700) at pthread_create.c:334
#10 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f4d4d408700 (LWP 4254)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x29401a0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x29401a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29401a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x29401a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29401a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x29401a0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x29401a0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d4d408700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f4d44c07700 (LWP 4255)):
[KCrash Handler]
#6  0x0000003000490d6e in __memcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:36
#7  0x00000030174a9520 in QByteArray::QByteArray(char const*, int) (__len=1153459712, __src=0x7f4d40113bb0, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:53
#8  0x00000030174a9520 in QByteArray::QByteArray(char const*, int) (this=0x7f4d44c06510, data=0x7f4d40113bb0 "X\034\003\303\060", size=1153459712) at tools/qbytearray.cpp:1452
#9  0x00000030c2e18077 in  () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#10 0x00000030c2e18151 in Baloo::PostingDB::iter(QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#11 0x00000030c2e210db in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#12 0x00000030c2a1fe9d in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#13 0x00000030c2a2002e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#14 0x00000030c2a2102c in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#15 0x00000030c2a0fff2 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#16 0x00007f4d4f4e0f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#17 0x00007f4d4f4e1879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#18 0x00007f4d55707f40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x29a4b20, localContext=...) at ../../src/abstractrunner.cpp:131
#19 0x00007f4d554eb7e0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#20 0x00007f4d554ea330 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, self=..., th=0x2938c80) at ../../src/job.cpp:83
#21 0x00007f4d554e9dda in ThreadWeaver::Thread::run() (this=0x2938c80) at ../../src/thread.cpp:114
#22 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2938c80) at thread/qthread_unix.cpp:331
#23 0x0000003001007454 in start_thread (arg=0x7f4d44c07700) at pthread_create.c:334
#24 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f4d4cc07700 (LWP 4256)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x2945ec0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2945ec0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2945ec0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2945ec0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2945ec0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x2945ec0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2945ec0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d4cc07700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f4d47fff700 (LWP 4257)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x2957990, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2957990, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2957990, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2957990, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2957990, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x2957990) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2957990) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d47fff700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f4d477fe700 (LWP 4258)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x2956c60, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2956c60, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2956c60, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x2956c60, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2956c60, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x2956c60) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2956c60) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d477fe700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f4d46ffd700 (LWP 4259)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x29574e0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x29574e0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29574e0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x29574e0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29574e0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x29574e0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x29574e0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d46ffd700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f4d467fc700 (LWP 4260)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x7f4d48002d90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x7f4d48002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f4d48002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x7f4d48002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f4d48002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x7f4d48002d90) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7f4d48002d90) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d467fc700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f4d45ffb700 (LWP 4261)):
#0  0x000000300100d04f 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=0x1fd6880) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f49ed0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f4d554e702b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2082c40, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f4d554e7ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2082c40, th=th@entry=0x7f4d28002d90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f4d554ec038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x7f4d28002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f4d28002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f4d554ec092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2019de0, th=0x7f4d28002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f4d554e6f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f4d28002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f4d554e9ea3 in ThreadWeaver::Thread::run() (this=0x7f4d28002d90) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7f4d28002d90) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7f4d45ffb700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f4d627927c0 (LWP 4056)):
#0  0x000000300100d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300300a5d9 in _xcb_conn_wait (c=c@entry=0x1d30470, cond=cond@entry=0x7ffc1c773ed0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300300bd37 in wait_for_reply (c=c@entry=0x1d30470, request=1105, e=e@entry=0x0) at ../../src/xcb_in.c:516
#3  0x000000300300be41 in xcb_wait_for_reply (c=c@entry=0x1d30470, request=1105, e=e@entry=0x0) at ../../src/xcb_in.c:546
#4  0x0000003003010175 in xcb_intern_atom_reply (c=c@entry=0x1d30470, cookie=..., e=e@entry=0x0) at xproto.c:2143
#5  0x00007f4d58514489 in KWindowEffectsPrivateX11::slideWindow(unsigned long long, KWindowEffects::SlideFromLocation, int) (this=<optimized out>, id=29360138, location=KWindowEffects::TopEdge, offset=-1) at ../../../../src/platforms/xcb/kwindoweffects.cpp:127
#6  0x00000030ad4246af in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#7  0x00000030ad4263c3 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=0x1d21d10, receiver=receiver@entry=0x7ffc1c77a530, e=e@entry=0x7ffc1c774380) at kernel/qapplication.cpp:3716
#10 0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc1c77a4c0, receiver=0x7ffc1c77a530, e=0x7ffc1c774380) at kernel/qapplication.cpp:3499
#11 0x00000030176865ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffc1c77a4c0, receiver=receiver@entry=0x7ffc1c77a530, event=event@entry=0x7ffc1c774380) at kernel/qcoreapplication.cpp:965
#12 0x000000301c4f979f in QWindow::setVisible(bool) (event=0x7ffc1c774380, receiver=0x7ffc1c77a530) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#13 0x000000301c4f979f in QWindow::setVisible(bool) (this=0x7ffc1c77a530, visible=false) at kernel/qwindow.cpp:520
#14 0x00000030ad422420 in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#15 0x00000030ad4253f3 in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#16 0x00000030ad426b6b 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 0x0000003046e512b0 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x0000003046e1dfdd in QV4::QObjectWrapper::setProperty(QObject*, QV4::ExecutionContext*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x0000003046e1e658 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 0x0000003046e1e792 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x0000003046e2dcf2 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f4d55177445 in  ()
#24 0x0000000000000000 in  ()

Reported using DrKonqi