Application: krunner (5.5.4)

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

-- Information about the crash:
- What I was doing when the application crashed:
I'd hit alt-F2 and started typing "chromium" and krunner crashed immediately.
This was the first restart after updating libraries, prelinking binaries and rebooting with a new kernel.

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 0x7f576a7a47c0 (LWP 4049))]

Thread 12 (Thread 0x7f576a0e1700 (LWP 4051)):
#0  0x00000030004dfdcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300380a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f576a0e0d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300380a382 in _xcb_conn_wait (c=c@entry=0x10dc470, cond=cond@entry=0x10dc4b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300380bff7 in xcb_wait_for_event (c=0x10dc470) at ../../src/xcb_in.c:693
#4  0x00007f576a540789 in QXcbEventReader::run() (this=0x10ef4c0) at qxcbconnection.cpp:1230
#5  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x10ef4c0) at thread/qthread_unix.cpp:331
#6  0x0000003000c07454 in start_thread (arg=0x7f576a0e1700) at pthread_create.c:334
#7  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f57608aa700 (LWP 4055)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f576397a693 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f5763979db7 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003000c07454 in start_thread (arg=0x7f57608aa700) at pthread_create.c:334
#4  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f575f328700 (LWP 4062)):
#0  0x00000030004dfdcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003002c4a39c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f5758003070, timeout=<optimized out>, context=0x7f5758000990) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x0000003002c4a39c in g_main_context_iterate (context=context@entry=0x7f5758000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x0000003002c4a4ac in g_main_context_iteration (context=0x7f5758000990, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f57580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x0000003017683daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f575f327de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00000030174a0864 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00000030556d5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x14415d0) at thread/qthread_unix.cpp:331
#9  0x0000003000c07454 in start_thread (arg=0x7f575f328700) at pthread_create.c:334
#10 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f5754d26700 (LWP 4255)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x1cc2290) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f5754d26700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f574ffff700 (LWP 4256)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x16991d0) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574ffff700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f574f7fe700 (LWP 4257)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x1cc9090) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574f7fe700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f574effd700 (LWP 4258)):
[KCrash Handler]
#6  0x0000003000c09a94 in __GI___pthread_mutex_lock (mutex=0x7f575cb4e008) at ../nptl/pthread_mutex_lock.c:68
#7  0x00000030d9a03bec in  () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#8  0x00000030d9a04d34 in mdb_txn_begin () at /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#9  0x00000030ad620f9e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#10 0x00000030ad60ff92 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#11 0x00007f5755139f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#12 0x00007f575513a879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#13 0x00007f575d308f40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x1de2750, localContext=...) at ../../src/abstractrunner.cpp:131
#14 0x00007f575d0ec790 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f575d0eb2e0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f575d0ead8a in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x7f5750002d90) at thread/qthread_unix.cpp:331
#18 0x0000003000c07454 in start_thread (arg=0x7f574effd700) at pthread_create.c:334
#19 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f574e7fc700 (LWP 4259)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x1cb4d90) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574e7fc700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f574dffb700 (LWP 4260)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x7f5748002f90) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574dffb700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f574d7fa700 (LWP 4261)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x7f5750003430) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574d7fa700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f574cff9700 (LWP 4262)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1386890) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x136bc10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f575d0e8dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f575d0ecfe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f575d0ed042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f575d0e7f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f575d0eae53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x1cb5340) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f574cff9700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f576a7a47c0 (LWP 4049)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300380a5d9 in _xcb_conn_wait (c=c@entry=0x10dc470, cond=cond@entry=0x7ffc20eedb90, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300380bd37 in wait_for_reply (c=c@entry=0x10dc470, request=1060, e=e@entry=0x7ffc20eedc60) at ../../src/xcb_in.c:516
#3  0x000000300380be41 in xcb_wait_for_reply (c=c@entry=0x10dc470, request=1060, e=e@entry=0x7ffc20eedc60) at ../../src/xcb_in.c:546
#4  0x0000003003c43317 in _XReply (dpy=0x10db0e0, rep=0x7ffc20eedce0, 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  0x00007f57635e82fa in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#8  0x00007f57635e4b4c in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#9  0x00007f576350b09e in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#10 0x00007f576350c609 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#11 0x00007f57634b1b72 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#12 0x00007f57634b9c61 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#13 0x000000303fb2925a in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x000000303fb2ec42 in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x000000303fb3a93f in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x000000303fb3b18b in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x000000303fb4b68e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x000000303fb9566b in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x000000303fb6603b in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x000000303fb67141 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x000000301db5affc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x10cdd10, receiver=receiver@entry=0x1234910, e=e@entry=0x7ffc20eee880) at kernel/qapplication.cpp:3716
#22 0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffc20eeeb90, receiver=0x1234910, e=0x7ffc20eee880) at kernel/qapplication.cpp:3499
#23 0x00000030176865eb in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffc20eeeb90, receiver=0x1234910, event=event@entry=0x7ffc20eee880) at kernel/qcoreapplication.cpp:965
#24 0x00000030176db85d in QTimerInfoList::activateTimers() (event=0x7ffc20eee880, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#25 0x00000030176db85d in QTimerInfoList::activateTimers() (this=0x1126c90) 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 0x0000003002c4a1a7 in g_main_context_dispatch (context=0x7f57640016f0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3154
#29 0x0000003002c4a1a7 in g_main_context_dispatch (context=context@entry=0x7f57640016f0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3769
#30 0x0000003002c4a400 in g_main_context_iterate (context=context@entry=0x7f57640016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3840
#31 0x0000003002c4a4ac in g_main_context_iteration (context=0x7f57640016f0, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
#32 0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1118280, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#33 0x0000003017683daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc20eeeac0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#34 0x000000301768be4c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#35 0x0000000000407671 in main ()

Reported using DrKonqi