Bug 360394

Summary: Krunner crashed at every first use
Product: [Frameworks and Libraries] frameworks-baloo Reporter: grants
Component: EngineAssignee: Pinak Ahuja <pinak.ahuja>
Status: RESOLVED WAITINGFORINFO    
Severity: crash CC: aspotashev
Priority: NOR Keywords: drkonqi
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description grants 2016-03-11 02:50:25 UTC 
Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.1.15-8-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: Every first time I ran krunner after login, it will crash at once. Open it again, it will work normal.

The crash can be reproduced every time.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f573221d7c0 (LWP 1736))]

Thread 19 (Thread 0x7f571ce6c700 (LWP 1737)):
#0  0x00007f572deb8bbd in poll () at /lib64/libc.so.6
#1  0x00007f572d3c5422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f572d3c700f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f571efbd3c9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f570a00d700 (LWP 1751)):
#0  0x00007f572deb8bbd in poll () at /lib64/libc.so.6
#1  0x00007f572b3bee64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f572b3bef7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f572e7e3d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f572e78ad53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f572e5ac61a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f5730c85df8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f56f43ef700 (LWP 7255)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f56f3bee700 (LWP 7256)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f56f33ed700 (LWP 7257)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f56f2bec700 (LWP 7258)):
[KCrash Handler]
#6  0x00007f572de6bf58 in __memcpy_sse2_unaligned () at /lib64/libc.so.6
#7  0x00007f56f7d9947a in  () at /usr/lib64/libKF5BalooEngine.so.5
#8  0x00007f56f7d8481e in  () at /usr/lib64/libKF5BalooEngine.so.5
#9  0x00007f56f7d848c1 in Baloo::PostingDB::iter(QByteArray const&) () at /usr/lib64/libKF5BalooEngine.so.5
#10 0x00007f56f7d8da5d in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () at /usr/lib64/libKF5BalooEngine.so.5
#11 0x00007f56f81d6ddb in  () at /usr/lib64/libKF5Baloo.so.5
#12 0x00007f56f81d6f32 in  () at /usr/lib64/libKF5Baloo.so.5
#13 0x00007f56f81d7e69 in  () at /usr/lib64/libKF5Baloo.so.5
#14 0x00007f56f81c6b7b in Baloo::Query::exec() () at /usr/lib64/libKF5Baloo.so.5
#15 0x00007f56f83e8266 in  () at /usr/lib64/qt5/plugins/krunner_baloosearchrunner.so
#16 0x00007f56f83e8bec in  () at /usr/lib64/qt5/plugins/krunner_baloosearchrunner.so
#17 0x00007f5702952106 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib64/libKF5Runner.so.5
#18 0x00007f5702734ba0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007f5702733930 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007f5702732f3a in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#22 0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#23 0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f56f23eb700 (LWP 7259)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f56f1bea700 (LWP 7260)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f56f13e9700 (LWP 7261)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f56f0be8700 (LWP 7262)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f56d3fff700 (LWP 7263)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f56d37fe700 (LWP 7264)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f56d2ffd700 (LWP 7265)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f56d27fc700 (LWP 7266)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f56d1ffb700 (LWP 7267)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f56d17fa700 (LWP 7268)):
[KCrash Handler]
#6  0x00007f572de6bf58 in __memcpy_sse2_unaligned () at /lib64/libc.so.6
#7  0x00007f56f7d9947a in  () at /usr/lib64/libKF5BalooEngine.so.5
#8  0x00007f56f7d8481e in  () at /usr/lib64/libKF5BalooEngine.so.5
#9  0x00007f56f7d848c1 in Baloo::PostingDB::iter(QByteArray const&) () at /usr/lib64/libKF5BalooEngine.so.5
#10 0x00007f56f7d8da5d in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () at /usr/lib64/libKF5BalooEngine.so.5
#11 0x00007f56f81d6ddb in  () at /usr/lib64/libKF5Baloo.so.5
#12 0x00007f56f81d6f32 in  () at /usr/lib64/libKF5Baloo.so.5
#13 0x00007f56f81d7e69 in  () at /usr/lib64/libKF5Baloo.so.5
#14 0x00007f56f81c6b7b in Baloo::Query::exec() () at /usr/lib64/libKF5Baloo.so.5
#15 0x00007f56f83e8266 in  () at /usr/lib64/qt5/plugins/krunner_baloosearchrunner.so
#16 0x00007f56f83e8bec in  () at /usr/lib64/qt5/plugins/krunner_baloosearchrunner.so
#17 0x00007f5702952106 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib64/libKF5Runner.so.5
#18 0x00007f5702734ba0 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007f5702733930 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007f5702732f3a in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#22 0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#23 0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f56d0ff9700 (LWP 7269)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f56b3fff700 (LWP 7270)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572e5b234b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f570273165f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007f570273543a in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f570272f6cb in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f5702733005 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f572e5b132f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f572bd250a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f572dec0fed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f573221d7c0 (LWP 1736)):
#0  0x00007f572bd2903f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f572d3c5669 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f572d3c6d5f in  () at /usr/lib64/libxcb.so.1
#3  0x00007f572d3c6ed2 in xcb_wait_for_reply64 () at /usr/lib64/libxcb.so.1
#4  0x00007f572d61e1f0 in _XReply () at /usr/lib64/libX11.so.6
#5  0x00007f572a8571c3 in  () at /usr/lib64/libGL.so.1
#6  0x00007f572a8574cb in  () at /usr/lib64/libGL.so.1
#7  0x00007f57161e760d in  () at /usr/lib64/dri/nouveau_dri.so
#8  0x00007f57161e40d8 in  () at /usr/lib64/dri/nouveau_dri.so
#9  0x00007f571611788e in  () at /usr/lib64/dri/nouveau_dri.so
#10 0x00007f5716118e51 in  () at /usr/lib64/dri/nouveau_dri.so
#11 0x00007f57160dbec7 in  () at /usr/lib64/dri/nouveau_dri.so
#12 0x00007f57160e292f in  () at /usr/lib64/dri/nouveau_dri.so
#13 0x00007f57313379e8 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib64/libQt5Quick.so.5
#14 0x00007f573133e3d6 in QSGBatchRenderer::Renderer::render() () at /usr/lib64/libQt5Quick.so.5
#15 0x00007f5731349c00 in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib64/libQt5Quick.so.5
#16 0x00007f573134a40b in QSGRenderer::renderScene(unsigned int) () at /usr/lib64/libQt5Quick.so.5
#17 0x00007f573135967e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib64/libQt5Quick.so.5
#18 0x00007f57313a29b3 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib64/libQt5Quick.so.5
#19 0x00007f573137454e in  () at /usr/lib64/libQt5Quick.so.5
#20 0x00007f57313756a5 in  () at /usr/lib64/libQt5Quick.so.5
#21 0x00007f572f6fde7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#22 0x00007f572f702cc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007f572e78ce95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#24 0x00007f572e7e377d in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#25 0x00007f572e7e3ad9 in  () at /usr/lib64/libQt5Core.so.5
#26 0x00007f572b3bec84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#27 0x00007f572b3beed8 in  () at /usr/lib64/libglib-2.0.so.0
#28 0x00007f572b3bef7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f572e7e3d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f572e78ad53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f572e7928f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#32 0x0000000000408bcb in main ()

Reported using DrKonqi
Comment 1 Dominik Haumann 2016-09-11 15:33:50 UTC 
The backtrace doesn't contain enough infos, sorry. But we have many other reports that do provide us with more info, so thanks anyways :)