Thread 21 (Thread 0xb3828450 (LWP 2239)):
#0  syscall () at ../ports/sysdeps/unix/sysv/linux/arm/syscall.S:37
#1  0xb3f82de8 in ?? () from /usr/lib/arm-linux-gnueabihf/liblttng-ust.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 20 (Thread 0xb3028450 (LWP 2240)):
#0  syscall () at ../ports/sysdeps/unix/sysv/linux/arm/syscall.S:37
#1  0xb3f82de8 in ?? () from /usr/lib/arm-linux-gnueabihf/liblttng-ust.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 19 (Thread 0xb2761450 (LWP 2279)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xb3cad7d6 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.8
#2  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#3  0xb6039f98 in start_thread (arg=0xb2761450) at pthread_create.c:311
#4  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 18 (Thread 0xb10bc450 (LWP 2315)):
#0  __libc_do_syscall ()
    at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:43
#1  0xb603d192 in __pthread_cond_wait (cond=0x20fe818, mutex=0x20fe518)
    at pthread_cond_wait.c:187
#2  0xb1f08b62 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 17 (Thread 0xb08bc450 (LWP 2333)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xb3c63100 in ?? () from /usr/lib/arm-linux-gnueabihf/libmircommon.so.2
#2  0xb3c63478 in ?? () from /usr/lib/arm-linux-gnueabihf/libmircommon.so.2
#3  0xb3c58a7e in mir::input::receiver::android::InputReceiver::next_event(std::chrono::duration<long long, std::ratio<1ll, 1000ll> > const&, MirEvent&) ()
   from /usr/lib/arm-linux-gnueabihf/libmircommon.so.2
#4  0xb3c595ba in ?? () from /usr/lib/arm-linux-gnueabihf/libmircommon.so.2
#5  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#6  0xb6039f98 in start_thread (arg=0xb08bc450) at pthread_create.c:311
#7  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 16 (Thread 0xafeb3450 (LWP 2335)):
#0  __libc_do_syscall ()
    at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:43
#1  0xb603d192 in __pthread_cond_wait (cond=0x210ad78, mutex=0x210ad5c)
    at pthread_cond_wait.c:187
#2  0xb630a9c4 in std::condition_variable::wait(std::unique_lock<std::mutex>&)
    () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#3  0xb3e99c52 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#4  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#5  0xb6039f98 in start_thread (arg=0xafeb3450) at pthread_create.c:311
#6  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 15 (Thread 0xaf4ff450 (LWP 2336)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xb3e66292 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#2  0xb3e68096 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#3  0xb3e63ddc in mir::AsioMainLoop::run() ()
   from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#4  0xb3e5ce16 in mir::DisplayServer::run() ()
   from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#5  0xb3ff139e in MirServerWorker::run() ()
   from /usr/lib/arm-linux-gnueabihf/qt5/plugins/platforms/libqpa-mirserver.so
#6  0xb6534d04 in call (a=<optimized out>, r=0x1f93890, this=0x1fa09b0)
    at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:132
#7  QMetaCallEvent::placeMetaCall (this=<optimized out>, object=0x1f93890)
    at kernel/qobject.cpp:485
#8  0xb6536f1c in QObject::event (this=<optimized out>, e=<optimized out>)
    at kernel/qobject.cpp:1241
#9  0xb65163e4 in notify (event=0x2113250, receiver=0x1f93890, this=0x1f7fb88)
    at kernel/qcoreapplication.cpp:997
#10 QCoreApplication::notifyInternal (this=0x1f7fb88, 
    receiver=receiver@entry=0x1f93890, event=event@entry=0x2113250)
    at kernel/qcoreapplication.cpp:935
#11 0xb6517f9a in sendEvent (event=0x2113250, receiver=0x1f93890)
    at kernel/qcoreapplication.h:237
#12 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, 
    event_type=event_type@entry=0, data=0x1f9efd0)
    at kernel/qcoreapplication.cpp:1539
#13 0xb6518396 in QCoreApplication::sendPostedEvents (
    receiver=receiver@entry=0x0, event_type=event_type@entry=0)
    at kernel/qcoreapplication.cpp:1397
#14 0xb6551514 in postEventSourceDispatch (s=0xae800da8)
    at kernel/qeventdispatcher_glib.cpp:279
#15 0xb5d1ef7c in g_main_dispatch (context=0xae8004d8)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3111
#16 g_main_context_dispatch (context=context@entry=0xae8004d8)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3710
#17 0xb5d1f128 in g_main_context_iterate (context=context@entry=0xae8004d8, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3781
#18 0xb5d1f1a8 in g_main_context_iteration (context=0xae8004d8, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#19 0xb655178e in QEventDispatcherGlib::processEvents (this=0xae800468, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:426
#20 0xb6514a8e in QEventLoop::exec (this=this@entry=0xaf4fedf4, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#21 0xb63b1d1a in QThread::exec (this=<optimized out>)
    at thread/qthread.cpp:511
#22 0xb63b534a in QThreadPrivate::start (arg=0x1f9f250)
    at thread/qthread_unix.cpp:345
#23 0xb6039f98 in start_thread (arg=0xaf4ff450) at pthread_create.c:311
#24 0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 14 (Thread 0xae7ff450 (LWP 2339)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xb3e66292 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#2  0xb3e68096 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#3  0xb3ebe6c0 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#4  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#5  0xb6039f98 in start_thread (arg=0xae7ff450) at pthread_create.c:311
#6  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 13 (Thread 0xadfff450 (LWP 2340)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xb3e66292 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#2  0xb3e68096 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#3  0xb3ebe6c0 in ?? () from /usr/lib/arm-linux-gnueabihf/libmirserver.so.26
#4  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#5  0xb6039f98 in start_thread (arg=0xadfff450) at pthread_create.c:311
#6  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 12 (Thread 0xacbb5450 (LWP 2477)):
#0  0xb44f2b34 in ?? ()
#1  0xb44586fe in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 11 (Thread 0xac3b5450 (LWP 2493)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0xaba02738, timeout=-1, context=0xaba004d8)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0xaba004d8, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f1a8 in g_main_context_iteration (context=0xaba004d8, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#4  0xb655178e in QEventDispatcherGlib::processEvents (this=0xaba00468, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb6514a8e in QEventLoop::exec (this=this@entry=0xac3b4df4, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#6  0xb63b1d1a in QThread::exec (this=<optimized out>)
    at thread/qthread.cpp:511
#7  0xb63b534a in QThreadPrivate::start (arg=0x21c4db0)
    at thread/qthread_unix.cpp:345
#8  0xb6039f98 in start_thread (arg=0xac3b5450) at pthread_create.c:311
#9  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 10 (Thread 0xaafec450 (LWP 2593)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=2, 
    fds=0x9e37bb38, timeout=-1, context=0x2248d00)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=0x2248d00, block=block@entry=1, 
    dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f3c4 in g_main_loop_run (loop=0x2248cc8)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3975
#4  0xb39f9c9c in gdbus_shared_thread_func (user_data=0x2248ce8)
    at /build/buildd/glib2.0-2.42.0/./gio/gdbusprivate.c:273
#5  0xb5d39cf2 in g_thread_proxy (data=0x22470c0)
    at /build/buildd/glib2.0-2.42.0/./glib/gthread.c:764
#6  0xb6039f98 in start_thread (arg=0xaafec450) at pthread_create.c:311
#7  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 9 (Thread 0xa9f4d450 (LWP 2700)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0xad400820, timeout=-1, context=0x22666a0)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x22666a0, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f1a8 in g_main_context_iteration (context=0x22666a0, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#4  0xa9f52e38 in ?? ()
   from /usr/lib/arm-linux-gnueabihf/gio/modules/libdconfsettings.so
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 8 (Thread 0xa85ff450 (LWP 2956)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0xad603398, timeout=-1, context=0xad600828)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0xad600828, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f1a8 in g_main_context_iteration (context=0xad600828, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#4  0xb655178e in QEventDispatcherGlib::processEvents (this=0xad600670, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb6514a8e in QEventLoop::exec (this=this@entry=0xa85fedbc, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#6  0xb63b1d1a in QThread::exec (this=<optimized out>)
    at thread/qthread.cpp:511
#7  0xa8b603a6 in ?? ()
   from /usr/lib/arm-linux-gnueabihf/unity8/qml/Unity/DashCommunicator/libDashCommunicator-qml.so
#8  0xb63b534a in QThreadPrivate::start (arg=0x22b9570)
    at thread/qthread_unix.cpp:345
#9  0xb6039f98 in start_thread (arg=0xa85ff450) at pthread_create.c:311
#10 0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 7 (Thread 0xa723f450 (LWP 2974)):
#0  0xb6200712 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0xaeca754a in ?? () from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#2  0xaeca93e6 in ?? () from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#3  0xaeca97b6 in ?? () from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#4  0xaec92958 in core::dbus::Bus::run() ()
   from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#5  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#6  0xb6039f98 in start_thread (arg=0xa723f450) at pthread_create.c:311
#7  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 6 (Thread 0xa6a1e450 (LWP 2975)):
#0  __libc_do_syscall ()
    at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:43
#1  0xb603d192 in __pthread_cond_wait (cond=0xa6a1dd98, mutex=0x23cf578)
    at pthread_cond_wait.c:187
#2  0xaeca9458 in ?? () from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#3  0xaeca97b6 in ?? () from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#4  0xaec92958 in core::dbus::Bus::run() ()
   from /usr/lib/arm-linux-gnueabihf/libdbus-cpp.so.4
#5  0xb630d5a4 in ?? () from /usr/lib/arm-linux-gnueabihf/libstdc++.so.6
#6  0xb6039f98 in start_thread (arg=0xa6a1e450) at pthread_create.c:311
#7  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 5 (Thread 0xa5369450 (LWP 3027)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0xaf502898, timeout=9983, context=0xaf5004f0)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0xaf5004f0, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f1a8 in g_main_context_iteration (context=0xaf5004f0, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#4  0xb655179c in QEventDispatcherGlib::processEvents (this=0xaf500480, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:428
#5  0xb6514a8e in QEventLoop::exec (this=this@entry=0xa5368df4, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#6  0xb63b1d1a in QThread::exec (this=<optimized out>)
    at thread/qthread.cpp:511
#7  0xb63b534a in QThreadPrivate::start (arg=0x26ba898)
    at thread/qthread_unix.cpp:345
#8  0xb6039f98 in start_thread (arg=0xa5369450) at pthread_create.c:311
#9  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 4 (Thread 0xa4aff450 (LWP 3028)):
#0  0xb61fb992 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0xb64d128a in QProcessManager::run (this=0x21c1618)
    at io/qprocess_unix.cpp:272
#2  0xb63b534a in QThreadPrivate::start (arg=0x21c1618)
    at thread/qthread_unix.cpp:345
#3  0xb6039f98 in start_thread (arg=0xa4aff450) at pthread_create.c:311
#4  0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 3 (Thread 0xa42fe450 (LWP 3068)):
#0  0xb61f9aa2 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0xb5d1f0ec in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0x26e4780, timeout=-1, context=0x26e2308)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x26e2308, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3776
#3  0xb5d1f1a8 in g_main_context_iteration (context=0x26e2308, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#4  0xb655178e in QEventDispatcherGlib::processEvents (this=0x26df490, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb6514a8e in QEventLoop::exec (this=this@entry=0xa42fdda4, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#6  0xb63b1d1a in QThread::exec (this=this@entry=0x26e1c80)
    at thread/qthread.cpp:511
#7  0xb6873a44 in QQuickPixmapReader::run (this=0x26e1c80)
    at util/qquickpixmapcache.cpp:688
#8  0xb63b534a in QThreadPrivate::start (arg=0x26e1c80)
    at thread/qthread_unix.cpp:345
#9  0xb6039f98 in start_thread (arg=0xa42fe450) at pthread_create.c:311
#10 0xb620022c in ?? ()
    at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:92
   from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 2 (Thread 0xa1f75450 (LWP 3076)):
#0  0xb6200e50 in recv () at ../sysdeps/unix/syscall-template.S:81
#1  0xb4537c8a in ?? ()
   from /usr/lib/arm-linux-gnueabihf/libandroid-properties.so.1
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0xb6fb4000 (LWP 2162)):
#0  __libc_do_syscall ()
    at ../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:43
#1  0xb603d192 in __pthread_cond_wait (cond=0x26fc180, mutex=0x26fc168)
    at pthread_cond_wait.c:187
#2  0xb63b605c in wait (time=4294967295, this=0x26fc168)
    at thread/qwaitcondition_unix.cpp:136
#3  QWaitCondition::wait (this=<optimized out>, mutex=0x26fbe2c, 
    time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:208
#4  0xb68bd7f2 in QSGThreadedRenderLoop::polishAndSync (this=this@entry=
    0x1f7ed48, w=0x26ed698) at scenegraph/qsgthreadedrenderloop.cpp:1171
#5  0xb68bdb9e in QSGThreadedRenderLoop::event (this=0x1f7ed48, 
    e=<optimized out>) at scenegraph/qsgthreadedrenderloop.cpp:1235
#6  0xb6516318 in QCoreApplication::notify (this=<optimized out>, 
    receiver=<optimized out>, event=<optimized out>)
    at kernel/qcoreapplication.cpp:997
#7  0xb65163f4 in QCoreApplication::notifyInternal (this=0x1f7fb88, 
    receiver=0x1f7ed48, event=event@entry=0xbec51294)
    at kernel/qcoreapplication.cpp:935
#8  0xb6550c2e in sendEvent (event=0xbec51294, receiver=<optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#9  QTimerInfoList::activateTimers (this=0x1f9f194)
    at kernel/qtimerinfo_unix.cpp:643
#10 0xb6550f46 in timerSourceDispatch (source=<optimized out>)
    at kernel/qeventdispatcher_glib.cpp:185
#11 0xb5d1ef7c in g_main_dispatch (context=0x1f9f350)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3111
#12 g_main_context_dispatch (context=context@entry=0x1f9f350)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3710
#13 0xb5d1f128 in g_main_context_iterate (context=context@entry=0x1f9f350, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3781
#14 0xb5d1f1a8 in g_main_context_iteration (context=0x1f9f350, may_block=1)
    at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3842
#15 0xb655178e in QEventDispatcherGlib::processEvents (this=0x1f9eb08, 
    flags=...) at kernel/qeventdispatcher_glib.cpp:426
#16 0xb6514a8e in QEventLoop::exec (this=this@entry=0xbec513e0, flags=..., 
    flags@entry=...) at kernel/qeventloop.cpp:212
#17 0xb6519b8a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#18 0x0001403e in ?? ()
#19 0xb6184630 in __libc_start_main (main=0x13989, argc=1, argv=0xbec516d4, 
    init=<optimized out>, fini=0x1773d <__libc_csu_fini>, 
    rtld_fini=0xb6fa24e5 <_dl_fini>, stack_end=0xbec516d4) at libc-start.c:287
#20 0x000147e0 in _start ()
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