Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.5.0+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
krunner crashed while trying to use alt-F2 to run kcalc

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 0x7f3eaa47b7c0 (LWP 4350))]

Thread 12 (Thread 0x7f3ea9db9700 (LWP 4351)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300340a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f3ea9db8d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300340a382 in _xcb_conn_wait (c=c@entry=0x2038470, cond=cond@entry=0x20384b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300340bff7 in xcb_wait_for_event (c=0x2038470) at ../../src/xcb_in.c:693
#4  0x00007f3eaa218789 in QXcbEventReader::run() (this=0x204b4c0) at qxcbconnection.cpp:1230
#5  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x204b4c0) at thread/qthread_unix.cpp:331
#6  0x0000003000c07454 in start_thread (arg=0x7f3ea9db9700) at pthread_create.c:334
#7  0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f3ea0f8f700 (LWP 4354)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3ea39b3c43 in radeon_drm_cs_emit_ioctl (mtx=0x212f250, cond=0x212f278) at ../../../../../../../include/c11/threads_posix.h:159
#2  0x00007f3ea39b3c43 in radeon_drm_cs_emit_ioctl (sema=0x212f250) at ../../../../../../../src/gallium/auxiliary/os/os_thread.h:259
#3  0x00007f3ea39b3c43 in radeon_drm_cs_emit_ioctl (param=param@entry=0x212ef00) at ../../../../../../../src/gallium/winsys/radeon/drm/radeon_drm_winsys.c:653
#4  0x00007f3ea39b3397 in impl_thrd_routine (p=<optimized out>) at ../../../../../../../include/c11/threads_posix.h:87
#5  0x0000003000c07454 in start_thread (arg=0x7f3ea0f8f700) at pthread_create.c:334
#6  0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f3e9f438700 (LWP 4356)):
#0  0x00007ffc26f23c6b in clock_gettime ()
#1  0x00000030004f5aa6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f3e9f437b50) at ../sysdeps/unix/clock_gettime.c:115
#2  0x0000003018155bc6 in qt_gettime() (ts=0x7f3e9f437b50, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  0x0000003018155bc6 in qt_gettime() (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  0x0000003018155bc6 in qt_gettime() () at tools/qelapsedtimer_unix.cpp:165
#5  0x00000030182da4e9 in QTimerInfoList::updateCurrentTime() (this=this@entry=0x7f3e98002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00000030182daa55 in QTimerInfoList::timerWait(timespec&) (this=0x7f3e98002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00000030182dbe3e in timerSourcePrepare(GSource*, gint*) (timeout=0x7f3e9f437c24, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  0x00000030182dbe3e in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=timeout@entry=0x7f3e9f437c24) at kernel/qeventdispatcher_glib.cpp:160
#9  0x000000300444975d in g_main_context_prepare (context=context@entry=0x7f3e98000990, priority=priority@entry=0x7f3e9f437cb0) at /build/glib2.0-2.46.2/./glib/gmain.c:3442
#10 0x000000300444a0fb in g_main_context_iterate (context=context@entry=0x7f3e98000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-2.46.2/./glib/gmain.c:3820
#11 0x000000300444a2dc in g_main_context_iteration (context=0x7f3e98000990, may_block=may_block@entry=1) at /build/glib2.0-2.46.2/./glib/gmain.c:3901
#12 0x00000030182dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3e980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x0000003018283d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3e9f437de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00000030180a0854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00000030406d5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2470e80) at thread/qthread_unix.cpp:331
#17 0x0000003000c07454 in start_thread (arg=0x7f3e9f438700) at pthread_create.c:334
#18 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f3e95132700 (LWP 5744)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x2c035d0, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x2c035d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2c035d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x2c035d0) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2c035d0) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e95132700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f3e94931700 (LWP 5745)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x2bf8370, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x2bf8370, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2bf8370, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x2bf8370) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2bf8370) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e94931700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f3e8ffff700 (LWP 5746)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x2c124a0, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x2c124a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2c124a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x2c124a0) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2c124a0) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e8ffff700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f3e8f7fe700 (LWP 5747)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x2c31500, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x2c31500, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x2c31500, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x2c31500) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2c31500) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e8f7fe700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f3e8effd700 (LWP 5748)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x7f3e90002d90, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x7f3e90002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f3e90002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x7f3e90002d90) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x7f3e90002d90) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e8effd700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f3e8e7fc700 (LWP 5749)):
[KCrash Handler]
#6  0x00000030dd604a54 in mdb_txn_begin () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#7  0x00000030c8a0b50f in Baloo::Database::open(Baloo::Database::OpenMode) () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#8  0x00000030c181e658 in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#9  0x00000030c180ffc9 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#10 0x00007f3e965b1f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#11 0x00007f3e965b2879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#12 0x00007f3e9d45bf40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x2cf2350, localContext=...) at ../../src/abstractrunner.cpp:131
#13 0x00007f3e9d23f7e0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#14 0x00007f3e9d23e330 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, self=..., th=0x2c28720) at ../../src/job.cpp:83
#15 0x00007f3e9d23ddda in ThreadWeaver::Thread::run() (this=0x2c28720) at ../../src/thread.cpp:114
#16 0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x2c28720) at thread/qthread_unix.cpp:331
#17 0x0000003000c07454 in start_thread (arg=0x7f3e8e7fc700) at pthread_create.c:334
#18 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3e8dffb700 (LWP 5750)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x7f3e88002f90, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x7f3e88002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f3e88002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x7f3e88002f90) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x7f3e88002f90) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e8dffb700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3e8d7fa700 (LWP 5751)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x22aa2a0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030180a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2339f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3e9d23b02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2358a60, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f3e9d23bddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2358a60, th=th@entry=0x7f3e80002f90, threadWasBusy=threadWasBusy@entry=true, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f3e9d240038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x2339d50, th=0x7f3e80002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f3e9d23af8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f3e80002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f3e9d23dea3 in ThreadWeaver::Thread::run() (this=0x7f3e80002f90) at ../../src/thread.cpp:103
#8  0x00000030180a57fe in QThreadPrivate::start(void*) (arg=0x7f3e80002f90) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f3e8d7fa700) at pthread_create.c:334
#10 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3eaa47b7c0 (LWP 4350)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300340a5d9 in _xcb_conn_wait (c=c@entry=0x2038470, cond=cond@entry=0x7ffc26e7c5d0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300340bd37 in wait_for_reply (c=c@entry=0x2038470, request=7069, e=e@entry=0x0) at ../../src/xcb_in.c:516
#3  0x000000300340be41 in xcb_wait_for_reply (c=0x2038470, request=7069, e=e@entry=0x0) at ../../src/xcb_in.c:546
#4  0x00000030034106e5 in xcb_get_property_reply (c=<optimized out>, cookie=..., e=e@entry=0x0) at xproto.c:2566
#5  0x0000003029638e9a in get_value_reply<unsigned int>(xcb_connection_t*, xcb_get_property_cookie_t, unsigned int, unsigned int, bool*) (c=<optimized out>, cookie=..., cookie@entry=..., type=334, def=def@entry=0, success=success@entry=0x7ffc26e7c740) at ../../src/platforms/xcb/netwm.cpp:189
#6  0x00000030296345c2 in NETWinInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) (this=this@entry=0x2d8b8b0, dirtyProperties=..., dirtyProperties@entry=..., dirtyProperties2=..., dirtyProperties2@entry=...) at ../../src/platforms/xcb/netwm.cpp:3966
#7  0x0000003029637580 in NETWinInfo::NETWinInfo(xcb_connection_t*, unsigned int, unsigned int, QFlags<NET::Property>, QFlags<NET::Property2>, NET::Role) (this=0x2d8b8b0, connection=0x2038470, window=52428805, rootWindow=1181, properties=..., properties2=..., role=NET::Client) at ../../src/platforms/xcb/netwm.cpp:2605
#8  0x00007f3ea034b26a in KWindowInfoPrivateX11::KWindowInfoPrivateX11(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) (this=0x2f99030, _win=52428805, properties=..., properties2=...) at ../../../../src/platforms/xcb/kwindowinfo.cpp:53
#9  0x00007f3ea0351ae1 in X11Plugin::createWindowInfo(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) (this=<optimized out>, window=52428805, properties=..., properties2=...) at ../../../../src/platforms/xcb/plugin.cpp:46
#10 0x00000030296246ff in KWindowSystemPluginWrapper::createWindowInfo(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) const (this=<optimized out>, window=52428805, properties=..., properties2=...) at ../../src/pluginwrapper.cpp:112
#11 0x0000003029621840 in KWindowInfo::KWindowInfo(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) (this=0x7ffc26e7cd70, window=<optimized out>, properties=..., properties2=...) at ../../src/kwindowinfo.cpp:208
#12 0x0000003029622649 in KWindowSystem::windowInfo(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) (win=<optimized out>, properties=..., properties2=...) at ../../src/kwindowsystem.cpp:378
#13 0x00007f3e963a9cca in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_windows.so
#14 0x00000030182c1578 in QSingleShotTimer::timerEvent(QTimerEvent*) (a=0x7ffc26e7ce20, r=<optimized out>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#15 0x00000030182c1578 in QSingleShotTimer::timerEvent(QTimerEvent*) (this=0x2456c60) at kernel/qtimer.cpp:315
#16 0x00000030182b5e13 in QObject::event(QEvent*) (this=0x2456c60, e=<optimized out>) at kernel/qobject.cpp:1261
#17 0x000000301db5affc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x2029d10, receiver=receiver@entry=0x2456c60, e=e@entry=0x7ffc26e7d100) at kernel/qapplication.cpp:3716
#18 0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc26e7d410, receiver=0x2456c60, e=0x7ffc26e7d100) at kernel/qapplication.cpp:3499
#19 0x00000030182865ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffc26e7d410, receiver=0x2456c60, event=event@entry=0x7ffc26e7d100) at kernel/qcoreapplication.cpp:965
#20 0x00000030182db85d in QTimerInfoList::activateTimers() (event=0x7ffc26e7d100, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#21 0x00000030182db85d in QTimerInfoList::activateTimers() (this=0x2076da0) at kernel/qtimerinfo_unix.cpp:637
#22 0x00000030182dbd61 in timerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#23 0x0000003004449fd7 in g_main_context_dispatch (context=0x7f3ea40016f0) at /build/glib2.0-2.46.2/./glib/gmain.c:3154
#24 0x0000003004449fd7 in g_main_context_dispatch (context=context@entry=0x7f3ea40016f0) at /build/glib2.0-2.46.2/./glib/gmain.c:3769
#25 0x000000300444a230 in g_main_context_iterate (context=context@entry=0x7f3ea40016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-2.46.2/./glib/gmain.c:3840
#26 0x000000300444a2dc in g_main_context_iteration (context=0x7f3ea40016f0, may_block=may_block@entry=1) at /build/glib2.0-2.46.2/./glib/gmain.c:3901
#27 0x00000030182dca3f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x2081060, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#28 0x0000003018283d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc26e7d340, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#29 0x000000301828be0c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#30 0x0000000000407671 in main ()

Reported using DrKonqi