Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.6.0-rc2+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
after several hours since restarting, I quit firefox and attempted to restart it using alt-F2, which caused this crash.

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".
[Current thread is 1 (Thread 0x7f45bf22f7c0 (LWP 4073))]

Thread 12 (Thread 0x7f45beb6d700 (LWP 4075)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300340a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f45beb6cd00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300340a382 in _xcb_conn_wait (c=c@entry=0x2520470, cond=cond@entry=0x25204b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300340bff7 in xcb_wait_for_event (c=0x2520470) at ../../src/xcb_in.c:693
#4  0x00007f45befcc789 in QXcbEventReader::run() (this=0x25334c0) at qxcbconnection.cpp:1230
#5  0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x25334c0) at thread/qthread_unix.cpp:331
#6  0x0000003000c07454 in start_thread (arg=0x7f45beb6d700) at pthread_create.c:334
#7  0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f45b5c63700 (LWP 4077)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f45bcd5d213 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f45bcd5c937 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003000c07454 in start_thread (arg=0x7f45b5c63700) at pthread_create.c:334
#4  0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f45b4181700 (LWP 4078)):
#0  0x00000030004dbe2d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003003c8d6f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f45b4180be0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x0000003003c8d6f0 in g_wakeup_acknowledge (wakeup=0x7f45b80015b0) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gwakeup.c:210
#3  0x0000003003c49e14 in g_main_context_check (context=context@entry=0x7f45ac000990, max_priority=2147483647, fds=fds@entry=0x7f45ac003070, n_fds=n_fds@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3632
#4  0x0000003003c4a2d0 in g_main_context_iterate (context=context@entry=0x7f45ac000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3837
#5  0x0000003003c4a43c in g_main_context_iteration (context=0x7f45ac000990, may_block=may_block@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3901
#6  0x00000030184dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f45ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x0000003018483d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f45b4180de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00000030182a0854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#9  0x0000003046ed5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x28ba100) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45b4181700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f45a9d26700 (LWP 4278)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x316bdf0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x316bdf0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x316bdf0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x316bdf0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x316bdf0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x316bdf0) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x316bdf0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a9d26700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f45a1525700 (LWP 4279)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x31b1e10, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31b1e10, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31b1e10, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31b1e10, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31b1e10, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x31b1e10) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x31b1e10) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a1525700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f45a9525700 (LWP 4280)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x317c280, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x317c280, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x317c280, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x317c280, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x317c280, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x317c280) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x317c280) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a9525700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f45a8d24700 (LWP 4281)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x31864a0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31864a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31864a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31864a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31864a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x31864a0) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x31864a0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a8d24700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f45a3fff700 (LWP 4282)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x31863f0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31863f0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31863f0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x31863f0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x31863f0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x31863f0) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x31863f0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a3fff700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f45a37fe700 (LWP 4283)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x7f45a4002d90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x7f45a4002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f45a4002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x7f45a4002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f45a4002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x7f45a4002d90) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x7f45a4002d90) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a37fe700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f45a2ffd700 (LWP 4284)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x272f7d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030182a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x27b6ac0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f45b1f8402b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2875810, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007f45b1f84ddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2875810, th=th@entry=0x7f459c002f90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007f45b1f89038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x7f459c002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f459c002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007f45b1f89092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x288c5a0, th=0x7f459c002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007f45b1f83f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7f459c002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007f45b1f86ea3 in ThreadWeaver::Thread::run() (this=0x7f459c002f90) at ../../src/thread.cpp:103
#10 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x7f459c002f90) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f45a2ffd700) at pthread_create.c:334
#12 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f45a27fc700 (LWP 4285)):
[KCrash Handler]
#6  0x00000030d86049d4 in mdb_txn_begin () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#7  0x00000030c402101e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#8  0x00000030c400fff2 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#9  0x00007f45abdfbf2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#10 0x00007f45abdfc879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#11 0x00007f45b21a4f40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x31aef10, localContext=...) at ../../src/abstractrunner.cpp:131
#12 0x00007f45b1f887e0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#13 0x00007f45b1f87330 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, self=..., th=0x7f458c002f90) at ../../src/job.cpp:83
#14 0x00007f45b1f86dda in ThreadWeaver::Thread::run() (this=0x7f458c002f90) at ../../src/thread.cpp:114
#15 0x00000030182a57fe in QThreadPrivate::start(void*) (arg=0x7f458c002f90) at thread/qthread_unix.cpp:331
#16 0x0000003000c07454 in start_thread (arg=0x7f45a27fc700) at pthread_create.c:334
#17 0x00000030004e8edd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f45bf22f7c0 (LWP 4073)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003003c4a32c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x338a590, timeout=<optimized out>, context=0x7f45b80016f0) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x0000003003c4a32c in g_main_context_iterate (context=context@entry=0x7f45b80016f0, 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=0x7f45b80016f0, may_block=may_block@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00000030184dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x25685a0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x0000003018483d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd6ff58be0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x000000301848be0c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#7  0x0000000000407671 in main ()

Reported using DrKonqi