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:
krunner crashed when attempting to start iceweasel with alt-F2 and 2 krunner processes are left stuck and not responding to alt-F2.

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 0x7fa8e01767c0 (LWP 4148))]

Thread 12 (Thread 0x7fa8dfab4700 (LWP 4149)):
#0  0x00000030004dfe4d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300300a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fa8dfab3d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300300a382 in _xcb_conn_wait (c=c@entry=0x1c98470, cond=cond@entry=0x1c984b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300300bff7 in xcb_wait_for_event (c=0x1c98470) at ../../src/xcb_in.c:693
#4  0x00007fa8dff13789 in QXcbEventReader::run() (this=0x1cab4c0) at qxcbconnection.cpp:1230
#5  0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x1cab4c0) at thread/qthread_unix.cpp:331
#6  0x0000003001007454 in start_thread (arg=0x7fa8dfab4700) at pthread_create.c:334
#7  0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa8dcfcd700 (LWP 4151)):
#0  0x000000300100d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa8ddca4213 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fa8ddca3937 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003001007454 in start_thread (arg=0x7fa8dcfcd700) at pthread_create.c:334
#4  0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa8d50c8700 (LWP 4156)):
#0  0x00000030004dbe2d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003003c8d6f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa8d50c7be0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x0000003003c8d6f0 in g_wakeup_acknowledge (wakeup=0x7fa8d80015b0) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gwakeup.c:210
#3  0x0000003003c49e14 in g_main_context_check (context=context@entry=0x7fa8d0000990, max_priority=2147483647, fds=fds@entry=0x7fa8d0003070, 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=0x7fa8d0000990, 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=0x7fa8d0000990, may_block=may_block@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3901
#6  0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa8d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x0000003017683d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa8d50c7de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00000030174a0854 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 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x20a29d0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8d50c8700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa8cade7700 (LWP 4353)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x28ec990, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x28ec990, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x28ec990, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x28ec990, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x28ec990, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x28ec990) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x28ec990) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8cade7700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa8c25e6700 (LWP 4354)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x29025b0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x29025b0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29025b0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x29025b0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29025b0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x29025b0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x29025b0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8c25e6700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa8ca5e6700 (LWP 4355)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x29028d0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x29028d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29028d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x29028d0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x29028d0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x29028d0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x29028d0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8ca5e6700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa8c9de5700 (LWP 4356)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x28fab30, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x28fab30, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x28fab30, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x28fab30, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x28fab30, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x28fab30) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x28fab30) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8c9de5700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa8c95e4700 (LWP 4357)):
[KCrash Handler]
#6  0x00000030d5e0392a in  () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#7  0x00000030d5e04d34 in mdb_txn_begin () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#8  0x00000030c2a2101e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#9  0x00000030c2a0fff2 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#10 0x00007fa8cc897f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#11 0x00007fa8cc898879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#12 0x00007fa8cf0ebf40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x2950210, localContext=...) at ../../src/abstractrunner.cpp:131
#13 0x00007fa8ceecf7e0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, job=..., thread=<optimized out>) at ../../src/executor.cpp:52
#14 0x00007fa8ceece330 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) (this=<optimized out>, self=..., th=0x2902ae0) at ../../src/job.cpp:83
#15 0x00007fa8ceecddda in ThreadWeaver::Thread::run() (this=0x2902ae0) at ../../src/thread.cpp:114
#16 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x2902ae0) at thread/qthread_unix.cpp:331
#17 0x0000003001007454 in start_thread (arg=0x7fa8c95e4700) at pthread_create.c:334
#18 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa8c8de3700 (LWP 4358)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x7fa8bc002f90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x7fa8bc002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa8bc002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x7fa8bc002f90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa8bc002f90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x7fa8bc002f90) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7fa8bc002f90) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8c8de3700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa8c3fff700 (LWP 4359)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x7fa8c4002d90, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x7fa8c4002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa8c4002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x7fa8c4002d90, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x7fa8c4002d90, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x7fa8c4002d90) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x7fa8c4002d90) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8c3fff700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa8c37fe700 (LWP 4360)):
#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=0x20909d0) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6a9b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1f3f2c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fa8ceecb02b in ThreadWeaver::Weaver::blockThreadUntilJobsAreBeingAssigned_locked(ThreadWeaver::Thread*) (this=this@entry=0x2032da0, th=<optimized out>) at ../../src/weaver.cpp:594
#4  0x00007fa8ceecbddf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) (this=0x2032da0, th=th@entry=0x20867a0, threadWasBusy=threadWasBusy@entry=false, suspendIfInactive=suspendIfInactive@entry=false, justReturning=justReturning@entry=false) at ../../src/weaver.cpp:554
#5  0x00007fa8ceed0038 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x20867a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:66
#6  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x20867a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#7  0x00007fa8ceed0092 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) (this=0x201f910, th=0x20867a0, wasBusy=<optimized out>) at ../../src/workinghardstate.cpp:73
#8  0x00007fa8ceecaf8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) (this=<optimized out>, th=0x20867a0, wasBusy=<optimized out>) at ../../src/weaver.cpp:568
#9  0x00007fa8ceecdea3 in ThreadWeaver::Thread::run() (this=0x20867a0) at ../../src/thread.cpp:103
#10 0x00000030174a57fe in QThreadPrivate::start(void*) (arg=0x20867a0) at thread/qthread_unix.cpp:331
#11 0x0000003001007454 in start_thread (arg=0x7fa8c37fe700) at pthread_create.c:334
#12 0x00000030004e8ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa8e01767c0 (LWP 4148)):
#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=0x1c98470, cond=cond@entry=0x7ffc18336070, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300300bd37 in wait_for_reply (c=c@entry=0x1c98470, request=1004, e=e@entry=0x7ffc18336140) at ../../src/xcb_in.c:516
#3  0x000000300300be41 in xcb_wait_for_reply (c=c@entry=0x1c98470, request=1004, e=e@entry=0x7ffc18336140) at ../../src/xcb_in.c:546
#4  0x0000003003843317 in _XReply (dpy=0x1c970e0, rep=0x7ffc183361c0, extra=0, discard=0) at ../../src/xcb_io.c:602
#5  0x0000003012e442fa in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#6  0x0000003012e44637 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#7  0x00007fa8dd91289a in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#8  0x00007fa8dd90f0ec in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#9  0x00007fa8dd83553e in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#10 0x00007fa8dd836aa9 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#11 0x00007fa8dd7dbb92 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#12 0x00007fa8dd7e3be1 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#13 0x0000003047d2925a in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x0000003047d2ec42 in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x0000003047d3a93f in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x0000003047d3b18b in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x0000003047d4b68e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x0000003047d9566b in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x0000003047d6603b in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x0000003047d67141 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x000000301db5affc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x1c89d10, receiver=receiver@entry=0x1df6d60, e=e@entry=0x7ffc18336d60) at kernel/qapplication.cpp:3716
#22 0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc18337070, receiver=0x1df6d60, e=0x7ffc18336d60) at kernel/qapplication.cpp:3499
#23 0x00000030176865ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffc18337070, receiver=0x1df6d60, event=event@entry=0x7ffc18336d60) at kernel/qcoreapplication.cpp:965
#24 0x00000030176db85d in QTimerInfoList::activateTimers() (event=0x7ffc18336d60, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#25 0x00000030176db85d in QTimerInfoList::activateTimers() (this=0x1cd6d90) at kernel/qtimerinfo_unix.cpp:637
#26 0x00000030176dbd99 in idleTimerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#27 0x00000030176dbd99 in idleTimerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:224
#28 0x0000003003c4a137 in g_main_context_dispatch (context=0x7fa8d80016f0) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3154
#29 0x0000003003c4a137 in g_main_context_dispatch (context=context@entry=0x7fa8d80016f0) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3769
#30 0x0000003003c4a390 in g_main_context_iterate (context=context@entry=0x7fa8d80016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3840
#31 0x0000003003c4a43c in g_main_context_iteration (context=0x7fa8d80016f0, may_block=may_block@entry=1) at /build/glib2.0-2CrUwg/glib2.0-2.48.0/./glib/gmain.c:3901
#32 0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1ce1050, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#33 0x0000003017683d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc18336fa0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#34 0x000000301768be0c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#35 0x0000000000407671 in main ()

Reported using DrKonqi