Application: dragon (17.07.2)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.8.0-51-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:
use dragon player to play a video in fullscreen mode, double click to exit fullscreen mode, dragon crashes

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dragon Player (dragon), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f184b9258c0 (LWP 8394))]

Thread 13 (Thread 0x7f1828214700 (LWP 8421)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f181d6ef8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f18552536ba in start_thread (arg=0x7f1828214700) at pthread_create.c:333
#3  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f1828a15700 (LWP 8420)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f181d6ef8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f18552536ba in start_thread (arg=0x7f1828a15700) at pthread_create.c:333
#3  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f180946d700 (LWP 8419)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f181d6ef8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f18552536ba in start_thread (arg=0x7f180946d700) at pthread_create.c:333
#3  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f1808c6c700 (LWP 8418)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f181d6ef8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f18552536ba in start_thread (arg=0x7f1808c6c700) at pthread_create.c:333
#3  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f180846b700 (LWP 8416)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f1857c71826 in QWaitConditionPrivate::wait_relative (time=30000, this=0x1e267b0) at thread/qwaitcondition_unix.cpp:133
#2  QWaitConditionPrivate::wait (time=30000, this=0x1e267b0) at thread/qwaitcondition_unix.cpp:141
#3  QWaitCondition::wait (this=this@entry=0x18999e0, mutex=mutex@entry=0x1863390, time=30000) at thread/qwaitcondition_unix.cpp:215
#4  0x00007f1857c6ce9a in QThreadPoolThread::run (this=0x18999d0) at thread/qthreadpool.cpp:133
#5  0x00007f1857c70989 in QThreadPrivate::start (arg=0x18999d0) at thread/qthread_unix.cpp:368
#6  0x00007f18552536ba in start_thread (arg=0x7f180846b700) at pthread_create.c:333
#7  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f18055f1700 (LWP 8410)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f1857c71826 in QWaitConditionPrivate::wait_relative (time=25119, this=0x1c65450) at thread/qwaitcondition_unix.cpp:133
#2  QWaitConditionPrivate::wait (time=25119, this=0x1c65450) at thread/qwaitcondition_unix.cpp:141
#3  QWaitCondition::wait (this=<optimized out>, mutex=0x1c63988, time=25119) at thread/qwaitcondition_unix.cpp:215
#4  0x00007f1846f1543f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#5  0x00007f1846f173cd in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#6  0x00007f1857e70c19 in QMetaObject::activate (sender=0x1c655a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3766
#7  0x00007f184649d1d4 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007f18464b79a6 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007f18464b808f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007f1838d783a9 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#11 0x00007f184649d1d4 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f18464b79a6 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007f18464b808f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007f184649d1d4 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007f18464b79a6 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007f18464b808f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007f1838d62a44 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#18 0x00007f1838d62dcd in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#19 0x00007f1838d653aa in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#20 0x00007f1846c0726b in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#21 0x00007f1852d48904 in g_hook_list_marshal () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f1846c05a9b in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#23 0x00007f1846c085f2 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#24 0x00007f1846c08be0 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#25 0x00007f1846c0688f in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#26 0x00007f1846c12924 in gst_pad_push_event () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#27 0x00007f1846c12a9b in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#28 0x00007f1846c0e4de in gst_pad_forward () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#29 0x00007f1846c0e633 in gst_pad_event_default () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#30 0x00007f1846c08367 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#31 0x00007f1846c0879e in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#32 0x00007f1846c08be0 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#33 0x00007f1846c0688f in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#34 0x00007f1846c12924 in gst_pad_push_event () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#35 0x00007f184694c311 in ?? () from /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0
#36 0x00007f18469513ab in ?? () from /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0
#37 0x00007f1846c08367 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#38 0x00007f1846c0879e in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#39 0x00007f1846c08be0 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#40 0x00007f1846c0688f in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#41 0x00007f1846c12924 in gst_pad_push_event () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#42 0x00007f1845df70bb in ?? () from /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#43 0x00007f183bb56171 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#44 0x00007f1846c08367 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#45 0x00007f1846c0879e in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#46 0x00007f1846c08be0 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#47 0x00007f1846c0688f in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#48 0x00007f1846c12924 in gst_pad_push_event () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#49 0x00007f1845dd8a6f in ?? () from /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#50 0x00007f1824355153 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideoparsersbad.so
#51 0x00007f1846c08367 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#52 0x00007f1846c0879e in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#53 0x00007f1846c08be0 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#54 0x00007f1846c0688f in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#55 0x00007f1846c12924 in gst_pad_push_event () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#56 0x00007f183bb7556e in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#57 0x00007f1846c3bf31 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#58 0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f18552536ba in start_thread (arg=0x7f18055f1700) at pthread_create.c:333
#61 0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f1805df2700 (LWP 8409)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1852d9cbdf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1846c3c0cd in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#3  0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f18552536ba in start_thread (arg=0x7f1805df2700) at pthread_create.c:333
#6  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f18065f3700 (LWP 8408)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1852d9cbdf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1846c3c0cd in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#3  0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f18552536ba in start_thread (arg=0x7f18065f3700) at pthread_create.c:333
#6  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f181f7fe700 (LWP 8403)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1852d9cbdf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f183bb7818e in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#3  0x00007f1846c3bf31 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#4  0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f18552536ba in start_thread (arg=0x7f181f7fe700) at pthread_create.c:333
#7  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f181ffff700 (LWP 8402)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1852d9cbdf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f183bb7818e in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#3  0x00007f1846c3bf31 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#4  0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f18552536ba in start_thread (arg=0x7f181ffff700) at pthread_create.c:333
#7  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1825c65700 (LWP 8401)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1852d9cbdf in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f183bb7818e in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#3  0x00007f1846c3bf31 in ?? () from /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#4  0x00007f1852d7f54e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1852d7ebb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f18552536ba in start_thread (arg=0x7f1825c65700) at pthread_create.c:333
#7  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1848639700 (LWP 8395)):
#0  0x00007f185726870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1852d5838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1852d5849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1857e9994b in QEventDispatcherGlib::processEvents (this=0x7f18400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1857e427ca in QEventLoop::exec (this=this@entry=0x7f1848638cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f1857c6bcd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f185b6a7b75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f1857c70989 in QThreadPrivate::start (arg=0x7f185b71dda0) at thread/qthread_unix.cpp:368
#8  0x00007f18552536ba in start_thread (arg=0x7f1848639700) at pthread_create.c:333
#9  0x00007f18572743dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f184b9258c0 (LWP 8394)):
[KCrash Handler]
#6  0x00007f18571a2428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007f18571a402a in __GI_abort () at abort.c:89
#8  0x00007f184b0969ff in wl_abort (fmt=fmt@entry=0x7f184b096ac0 "Error marshalling request: %s\n") at ../src/wayland-util.c:418
#9  0x00007f184b092c05 in wl_proxy_marshal_array_constructor_versioned (proxy=proxy@entry=0x172b600, opcode=opcode@entry=1, args=args@entry=0x7ffd0f18c280, interface=interface@entry=0x7f184b299b40 <wl_subsurface_interface>, version=1) at ../src/wayland-client.c:653
#10 0x00007f184b092c29 in wl_proxy_marshal_array_constructor (proxy=proxy@entry=0x172b600, opcode=opcode@entry=1, args=args@entry=0x7ffd0f18c280, interface=interface@entry=0x7f184b299b40 <wl_subsurface_interface>) at ../src/wayland-client.c:599
#11 0x00007f184b092e2a in wl_proxy_marshal_constructor (proxy=0x172b600, opcode=opcode@entry=1, interface=0x7f184b299b40 <wl_subsurface_interface>) at ../src/wayland-client.c:733
#12 0x00007f184b31d47f in wl_subcompositor_get_subsurface (parent=<optimized out>, surface=<optimized out>, wl_subcompositor=<optimized out>) at ../../include/QtWaylandClient/5.9.1/QtWaylandClient/private/wayland-wayland-client-protocol.h:4145
#13 QtWayland::wl_subcompositor::get_subsurface (this=<optimized out>, surface=<optimized out>, parent=<optimized out>) at qwayland-wayland.cpp:2036
#14 0x00007f184b2f7186 in QtWaylandClient::QWaylandDisplay::createSubSurface (this=<optimized out>, window=window@entry=0x1d5afd0, parent=parent@entry=0x1d1a130) at qwaylanddisplay.cpp:112
#15 0x00007f184b2fd0c0 in QtWaylandClient::QWaylandWindow::initWindow (this=this@entry=0x1d5afd0) at qwaylandwindow.cpp:142
#16 0x00007f184b2fd7c5 in QtWaylandClient::QWaylandWindow::setVisible (this=0x1d5afd0, visible=<optimized out>) at qwaylandwindow.cpp:346
#17 0x00007f183b32a434 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/wayland-graphics-integration-client/libwayland-egl.so
#18 0x00007f185823f9b9 in QWindow::setVisible (this=this@entry=0x1cb04d0, visible=visible@entry=true) at kernel/qwindow.cpp:587
#19 0x00007f18587e105c in QWidgetPrivate::show_sys (this=this@entry=0x1cafd40) at kernel/qwidget.cpp:8015
#20 0x00007f18587ea4db in QWidgetPrivate::show_helper (this=this@entry=0x1cafd40) at kernel/qwidget.cpp:7938
#21 0x00007f18587ed1fd in QWidget::setVisible (this=0x1cafd00, visible=<optimized out>) at kernel/qwidget.cpp:8232
#22 0x00007f18587ea348 in QWidgetPrivate::showChildren (this=this@entry=0x1caf5a0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8315
#23 0x00007f18587ea3cf in QWidgetPrivate::show_helper (this=this@entry=0x1caf5a0) at kernel/qwidget.cpp:7883
#24 0x00007f18587ed1fd in QWidget::setVisible (this=0x1caf4b0, visible=<optimized out>) at kernel/qwidget.cpp:8232
#25 0x000000000042f651 in Dragon::MainWindow::setFullScreen (this=0x176dc80, isFullScreen=<optimized out>) at /workspace/build/src/app/mainWindow.cpp:711
#26 0x00000000004419ec in Dragon::MainWindow::qt_static_metacall (_o=0x176dc80, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/src/app/moc_mainWindow.cpp:174
#27 0x00007f1857e70c19 in QMetaObject::activate (sender=sender@entry=0x1cb6790, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x7ffd0f18ca00) at kernel/qobject.cpp:3766
#28 0x00007f1857e71527 in QMetaObject::activate (sender=sender@entry=0x1cb6790, m=m@entry=0x7f1858c7fca0 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x7ffd0f18ca00) at kernel/qobject.cpp:3628
#29 0x00007f18587a5fa2 in QAction::toggled (this=this@entry=0x1cb6790, _t1=_t1@entry=false) at .moc/moc_qaction.cpp:384
#30 0x00007f18587a84ce in QAction::setChecked (this=0x1cb6790, b=<optimized out>) at kernel/qaction.cpp:977
#31 0x00007f18587edf57 in QWidget::event (this=0x188eb60, event=0x7ffd0f18cc50) at kernel/qwidget.cpp:8802
#32 0x0000000000420fd9 in Dragon::VideoWindow::event (this=<optimized out>, event=<optimized out>) at /workspace/build/src/app/videoWindow.cpp:757
#33 0x00007f18587ac3fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x188eb60, e=0x7ffd0f18cc50) at kernel/qapplication.cpp:3717
#34 0x00007f18587b4a2b in QApplication::notify (this=<optimized out>, receiver=0x188f000, e=0x7ffd0f18cee0) at kernel/qapplication.cpp:3193
#35 0x00007f1857e44798 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x188f000, event=event@entry=0x7ffd0f18cee0) at kernel/qcoreapplication.cpp:1018
#36 0x00007f18587b33cf in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#37 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x188f000, event=event@entry=0x7ffd0f18cee0, alienWidget=alienWidget@entry=0x188f000, nativeWidget=0x176dc80, buttonDown=buttonDown@entry=0x7f1858caec70 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2699
#38 0x00007f1858807446 in QWidgetWindow::handleMouseEvent (this=this@entry=0x1b17470, event=event@entry=0x7ffd0f18d350) at kernel/qwidgetwindow.cpp:622
#39 0x00007f1858809ea3 in QWidgetWindow::event (this=0x1b17470, event=0x7ffd0f18d350) at kernel/qwidgetwindow.cpp:243
#40 0x00007f18587ac3fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x1b17470, e=0x7ffd0f18d350) at kernel/qapplication.cpp:3717
#41 0x00007f18587b3e07 in QApplication::notify (this=0x7ffd0f18d7e0, receiver=0x1b17470, e=0x7ffd0f18d350) at kernel/qapplication.cpp:3476
#42 0x00007f1857e44798 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x1b17470, event=event@entry=0x7ffd0f18d350) at kernel/qcoreapplication.cpp:1018
#43 0x00007f18582361ff in QCoreApplication::sendSpontaneousEvent (event=0x7ffd0f18d350, receiver=0x1b17470) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#44 QGuiApplicationPrivate::processMouseEvent (e=<optimized out>) at kernel/qguiapplication.cpp:1993
#45 0x00007f18582378a5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x186e530) at kernel/qguiapplication.cpp:1733
#46 0x00007f1858211ceb in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:939
#47 0x00007f184b32caf0 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#48 0x00007f1852d58197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007f1852d583f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f1852d5849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f1857e9992f in QEventDispatcherGlib::processEvents (this=0x17905b0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#52 0x00007f1857e427ca in QEventLoop::exec (this=this@entry=0x7ffd0f18d690, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#53 0x00007f1857e4b704 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#54 0x00007f185822d2ec in QGuiApplication::exec () at kernel/qguiapplication.cpp:1679
#55 0x00007f18587ac355 in QApplication::exec () at kernel/qapplication.cpp:2905
#56 0x000000000041a9a1 in main (argc=2, argv=<optimized out>) at /workspace/build/src/app/main.cpp:91

Possible duplicates by query: bug 381034, bug 381033.

Reported using DrKonqi