[kde] [Bug 365661] New: Crash when exiting DVD create wizard

via KDE Bugzilla bugzilla_noreply at kde.org
Thu Jul 14 11:51:28 BST 2016


https://bugs.kde.org/show_bug.cgi?id=365661

            Bug ID: 365661
           Summary: Crash when exiting DVD create wizard
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: lukasz.baran at gmail.com

Application: kdenlive (16.04.1)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:

I started DVD creation wizard, loaded one mp4 file (quite big: 20+GB). It was
detected as a file that needs to be transcoded. I started transcoding but I
changed my mind and clicked 'Cancel' - the the crash happenned.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbb201748c0 (LWP 27750))]

Thread 7 (Thread 0x7fbb0536b700 (LWP 27752)):
#0  0x00007fbb2a66ee8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbb0db8264c in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007fbb28f9c6fa in start_thread (arg=0x7fbb0536b700) at
pthread_create.c:333
#3  0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fbaf5445700 (LWP 27753)):
#0  0x00007fbb2a66a9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbb275d76c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbb27593e04 in g_main_context_check () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbb275942c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbb2759442c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbb2b2a4a9b in QEventDispatcherGlib::processEvents
(this=0x7fbaf00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fbb2b24bdea in QEventLoop::exec (this=this at entry=0x7fbaf5444ce0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fbb2b0688a4 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#8  0x00007fbb2be193c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fbb2b06d84e in QThreadPrivate::start (arg=0x2e91850) at
thread/qthread_unix.cpp:331
#10 0x00007fbb28f9c6fa in start_thread (arg=0x7fbaf5445700) at
pthread_create.c:333
#11 0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fbaef7fe700 (LWP 27755)):
#0  0x00007ffdd9dddcaf in clock_gettime ()
#1  0x00007fbb2a688fb6 in __GI___clock_gettime (clock_id=1,
tp=tp at entry=0x7fbaef7fda50) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fbb2b11dc16 in qt_clock_gettime (ts=0x7fbaef7fda50, clock=<optimized
out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at
tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fbb2b2a2529 in QTimerInfoList::updateCurrentTime
(this=this at entry=0x7fbae0002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fbb2b2a2a95 in QTimerInfoList::timerWait (this=0x7fbae0002ed0,
tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fbb2b2a3e7e in timerSourcePrepareHelper (timeout=0x7fbaef7fdb24,
src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fbaef7fdb24) at
kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fbb275938ad in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fbb2759424b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fbb2759442c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fbb2b2a4a9b in QEventDispatcherGlib::processEvents
(this=0x7fbae00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fbb2b24bdea in QEventLoop::exec (this=this at entry=0x7fbaef7fdce0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fbb2b0688a4 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#15 0x00007fbb2be193c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fbb2b06d84e in QThreadPrivate::start (arg=0x2eeab80) at
thread/qthread_unix.cpp:331
#17 0x00007fbb28f9c6fa in start_thread (arg=0x7fbaef7fe700) at
pthread_create.c:333
#18 0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fbadffff700 (LWP 27764)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbb2b06eaeb in QWaitConditionPrivate::wait
(time=18446744073709551615, this=0x41fe4f0) at
thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4210b60,
time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fbb2f60792e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fbb2f6081b3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fbb2b06d84e in QThreadPrivate::start (arg=0x4210ae0) at
thread/qthread_unix.cpp:331
#6  0x00007fbb28f9c6fa in start_thread (arg=0x7fbadffff700) at
pthread_create.c:333
#7  0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fbadf7fe700 (LWP 27765)):
#0  0x00007ffdd9dddcaf in clock_gettime ()
#1  0x00007fbb2a688fb6 in __GI___clock_gettime (clock_id=1,
tp=tp at entry=0x7fbadf7fda70) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fbb2b11dc16 in qt_clock_gettime (ts=0x7fbadf7fda70, clock=<optimized
out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at
tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fbb2b2a2529 in QTimerInfoList::updateCurrentTime
(this=this at entry=0x7fbad0002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fbb2b2a2a95 in QTimerInfoList::timerWait (this=0x7fbad0002cd0,
tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fbb2b2a3e7e in timerSourcePrepareHelper (timeout=0x7fbadf7fdb44,
src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fbadf7fdb44) at
kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fbb275938ad in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fbb2759424b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fbb2759442c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fbb2b2a4a9b in QEventDispatcherGlib::processEvents
(this=0x7fbad00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fbb2b24bdea in QEventLoop::exec (this=this at entry=0x7fbadf7fdd00,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fbb2b0688a4 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#15 0x00007fbb2b06d84e in QThreadPrivate::start (arg=0x7fbad8003490) at
thread/qthread_unix.cpp:331
#16 0x00007fbb28f9c6fa in start_thread (arg=0x7fbadf7fe700) at
pthread_create.c:333
#17 0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fbaeffff700 (LWP 27827)):
#0  0x00007ffdd9dddcaf in clock_gettime ()
#1  0x00007fbb2a688fb6 in __GI___clock_gettime (clock_id=1,
tp=tp at entry=0x7fbaefffea50) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fbb2b11dc16 in qt_clock_gettime (ts=0x7fbaefffea50, clock=<optimized
out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at
tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fbb2b2a2529 in QTimerInfoList::updateCurrentTime
(this=this at entry=0x7fbae8003f30) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fbb2b2a2a95 in QTimerInfoList::timerWait (this=0x7fbae8003f30,
tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fbb2b2a3e7e in timerSourcePrepareHelper (timeout=0x7fbaefffeb24,
src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fbaefffeb24) at
kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fbb275938ad in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fbb2759424b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fbb2759442c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fbb2b2a4a9b in QEventDispatcherGlib::processEvents
(this=0x7fbae8003a70, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fbb2b24bdea in QEventLoop::exec (this=this at entry=0x7fbaefffece0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fbb2b0688a4 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#15 0x00007fbb2be193c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fbb2b06d84e in QThreadPrivate::start (arg=0x3caa6b0) at
thread/qthread_unix.cpp:331
#17 0x00007fbb28f9c6fa in start_thread (arg=0x7fbaeffff700) at
pthread_create.c:333
#18 0x00007fbb2a67ab5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fbb201748c0 (LWP 27750)):
[KCrash Handler]
#6  QObject::isWidgetType (this=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qobject.h:137
#7  QWidget::ensurePolished (this=this at entry=0x3b3aff0) at
kernel/qwidget.cpp:9916
#8  0x00007fbb2c842c51 in QWidgetPrivate::prepareToRender
(this=this at entry=0x3c986a0, region=..., renderFlags=..., renderFlags at entry=...)
at kernel/qwidget.cpp:5300
#9  0x00007fbb2c84372f in QWidget::render (this=this at entry=0x3c98660,
painter=painter at entry=0x7ffdd9dbdc90, targetOffset=..., sourceRegion=...,
renderFlags=renderFlags at entry=...) at kernel/qwidget.cpp:5103
#10 0x00007fbb2c843abb in QWidget::render (this=0x3c98660,
target=target at entry=0x3cbc008, targetOffset=..., sourceRegion=...,
renderFlags=..., renderFlags at entry=...) at kernel/qwidget.cpp:5067
#11 0x00007fbb2d041670 in KMessageWidgetPrivate::updateSnapShot
(this=0x3cbbfc0) at ../../src/kmessagewidget.cpp:175
#12 0x00007fbb2d0417bf in KMessageWidget::animatedShow (this=0x3c97bd0) at
../../src/kmessagewidget.cpp:421
#13 0x00000000006dee79 in DvdWizardVob::slotTranscodeFinished (this=0x3ccb8a0,
exitCode=<optimized out>, exitStatus=<optimized out>) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/dvdwizard/dvdwizardvob.cpp:211
#14 0x00007fbb2b27ce4f in QtPrivate::QSlotObjectBase::call (a=0x7ffdd9dbdf00,
r=0x3ccb8a0, this=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#15 QMetaObject::activate (sender=sender at entry=0x3ccb990,
signalOffset=<optimized out>, local_signal_index=local_signal_index at entry=2,
argv=argv at entry=0x7ffdd9dbdf00) at kernel/qobject.cpp:3698
#16 0x00007fbb2b27d7d7 in QMetaObject::activate (sender=sender at entry=0x3ccb990,
m=m at entry=0x7fbb2b493400 <QProcess::staticMetaObject>,
local_signal_index=local_signal_index at entry=2, argv=argv at entry=0x7ffdd9dbdf00)
at kernel/qobject.cpp:3578
#17 0x00007fbb2b17bd0f in QProcess::finished (this=this at entry=0x3ccb990, _t1=9,
_t2=QProcess::CrashExit) at .moc/moc_qprocess.cpp:246
#18 0x00007fbb2b18454c in QProcessPrivate::_q_processDied
(this=this at entry=0x3cc2c20) at io/qprocess.cpp:1107
#19 0x00007fbb2b1e3995 in QProcessPrivate::waitForFinished
(this=this at entry=0x3cc2c20, msecs=msecs at entry=30000) at
io/qprocess_unix.cpp:1069
#20 0x00007fbb2b17e55f in QProcess::waitForFinished (this=this at entry=0x3ccb990,
msecs=msecs at entry=30000) at io/qprocess.cpp:1849
#21 0x00007fbb2b17ed7e in QProcess::~QProcess (this=0x3ccb990,
__in_chrg=<optimized out>) at io/qprocess.cpp:1189
#22 0x00000000006dba3a in DvdWizardVob::~DvdWizardVob (this=0x3ccb8a0,
__in_chrg=<optimized out>) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/dvdwizard/dvdwizardvob.cpp:150
#23 0x00000000006dbaa9 in DvdWizardVob::~DvdWizardVob (this=0x3ccb8a0,
__in_chrg=<optimized out>) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/dvdwizard/dvdwizardvob.cpp:153
#24 0x00007fbb2b27b52b in QObjectPrivate::deleteChildren
(this=this at entry=0x3cc1250) at kernel/qobject.cpp:1946
#25 0x00007fbb2c8416c8 in QWidget::~QWidget (this=0x3cc2340,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1658
#26 0x00007fbb2c9444a9 in QFrame::~QFrame (this=0x3cc2340, __in_chrg=<optimized
out>) at widgets/qframe.cpp:254
#27 0x00007fbb2b27b52b in QObjectPrivate::deleteChildren
(this=this at entry=0x3f88c30) at kernel/qobject.cpp:1946
#28 0x00007fbb2c8416c8 in QWidget::~QWidget (this=0x3b7ab50,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1658
#29 0x00007fbb2ca4006e in QWizardAntiFlickerWidget::~QWizardAntiFlickerWidget
(this=0x3b7ab50, __in_chrg=<optimized out>) at dialogs/qwizard.cpp:521
#30 QWizardAntiFlickerWidget::~QWizardAntiFlickerWidget (this=0x3b7ab50,
__in_chrg=<optimized out>) at dialogs/qwizard.cpp:521
#31 0x00007fbb2b27b52b in QObjectPrivate::deleteChildren
(this=this at entry=0x3cc0d70) at kernel/qobject.cpp:1946
#32 0x00007fbb2c8416c8 in QWidget::~QWidget (this=0x3b3aff0,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1658
#33 0x00000000006c5f29 in DvdWizard::~DvdWizard (this=0x3b3aff0,
__in_chrg=<optimized out>) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/dvdwizard/dvdwizard.cpp:153
#34 0x00000000007e0e8a in MainWindow::slotDvdWizard (this=0x18282f0, url=...)
at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/mainwindow.cpp:2710
#35 0x0000000000831c44 in MainWindow::qt_static_metacall
(_o=_o at entry=0x18282f0, _c=_c at entry=QMetaObject::InvokeMetaMethod,
_id=_id at entry=100, _a=_a at entry=0x7ffdd9dbe5f0) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/obj-x86_64-linux-gnu/src/moc_mainwindow.cpp:736
#36 0x00007fbb2b27cfca in QMetaObject::activate (sender=sender at entry=0x23fd580,
signalOffset=<optimized out>, local_signal_index=local_signal_index at entry=1,
argv=argv at entry=0x7ffdd9dbe5f0) at kernel/qobject.cpp:3713
#37 0x00007fbb2b27d7d7 in QMetaObject::activate (sender=sender at entry=0x23fd580,
m=m at entry=0x7fbb2cd04f00 <QAction::staticMetaObject>,
local_signal_index=local_signal_index at entry=1, argv=argv at entry=0x7ffdd9dbe5f0)
at kernel/qobject.cpp:3578
#38 0x00007fbb2c7f9412 in QAction::triggered (this=this at entry=0x23fd580,
_t1=false) at .moc/moc_qaction.cpp:365
#39 0x00007fbb2c7fb898 in QAction::activate (this=0x23fd580, event=<optimized
out>) at kernel/qaction.cpp:1162
#40 0x00007fbb2c97de22 in QMenuPrivate::activateCausedStack
(this=this at entry=0x3f420e0, causedStack=..., action=action at entry=0x23fd580,
action_e=action_e at entry=QAction::Trigger, self=self at entry=true) at
widgets/qmenu.cpp:1130
#41 0x00007fbb2c9840bc in QMenuPrivate::activateAction
(this=this at entry=0x3f420e0, action=action at entry=0x23fd580,
action_e=action_e at entry=QAction::Trigger, self=self at entry=true) at
widgets/qmenu.cpp:1207
#42 0x00007fbb2c988030 in QMenu::mouseReleaseEvent (this=<optimized out>,
e=0x7ffdd9dbeb30) at widgets/qmenu.cpp:2540
#43 0x00007fbb2c845f88 in QWidget::event (this=this at entry=0x3ef36e0,
event=event at entry=0x7ffdd9dbeb30) at kernel/qwidget.cpp:9044
#44 0x00007fbb2c988a83 in QMenu::event (this=0x3ef36e0, e=0x7ffdd9dbeb30) at
widgets/qmenu.cpp:2654
#45 0x00007fbb2c80305c in QApplicationPrivate::notify_helper
(this=this at entry=0x17c9ec0, receiver=receiver at entry=0x3ef36e0,
e=e at entry=0x7ffdd9dbeb30) at kernel/qapplication.cpp:3716
#46 0x00007fbb2c808c19 in QApplication::notify (this=<optimized out>,
receiver=0x3ef36e0, e=0x7ffdd9dbeb30) at kernel/qapplication.cpp:3276
#47 0x00007fbb2b24e62b in QCoreApplication::notifyInternal
(this=0x7ffdd9dbf960, receiver=receiver at entry=0x3ef36e0,
event=event at entry=0x7ffdd9dbeb30) at kernel/qcoreapplication.cpp:965
#48 0x00007fbb2c987769 in QCoreApplication::sendEvent (event=0x7ffdd9dbeb30,
receiver=0x3ef36e0) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#49 QMenuPrivate::mouseEventTaken (this=this at entry=0x19baa90,
e=e at entry=0x7ffdd9dbf0c0) at widgets/qmenu.cpp:1115
#50 0x00007fbb2c987eb6 in QMenu::mouseReleaseEvent (this=0x18c4db0,
e=0x7ffdd9dbf0c0) at widgets/qmenu.cpp:2523
#51 0x00007fbb2c845f88 in QWidget::event (this=this at entry=0x18c4db0,
event=event at entry=0x7ffdd9dbf0c0) at kernel/qwidget.cpp:9044
#52 0x00007fbb2c988a83 in QMenu::event (this=0x18c4db0, e=0x7ffdd9dbf0c0) at
widgets/qmenu.cpp:2654
#53 0x00007fbb2c80305c in QApplicationPrivate::notify_helper
(this=this at entry=0x17c9ec0, receiver=receiver at entry=0x18c4db0,
e=e at entry=0x7ffdd9dbf0c0) at kernel/qapplication.cpp:3716
#54 0x00007fbb2c808c19 in QApplication::notify (this=<optimized out>,
receiver=0x18c4db0, e=0x7ffdd9dbf0c0) at kernel/qapplication.cpp:3276
#55 0x00007fbb2b24e62b in QCoreApplication::notifyInternal
(this=0x7ffdd9dbf960, receiver=receiver at entry=0x18c4db0,
event=event at entry=0x7ffdd9dbf0c0) at kernel/qcoreapplication.cpp:965
#56 0x00007fbb2c807b32 in QCoreApplication::sendSpontaneousEvent
(event=0x7ffdd9dbf0c0, receiver=0x18c4db0) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#57 QApplicationPrivate::sendMouseEvent (receiver=receiver at entry=0x18c4db0,
event=event at entry=0x7ffdd9dbf0c0, alienWidget=alienWidget at entry=0x0,
nativeWidget=0x18c4db0, buttonDown=buttonDown at entry=0x7fbb2cd33b20
<qt_button_down>, lastMouseReceiver=..., spontaneous=true) at
kernel/qapplication.cpp:2770
#58 0x00007fbb2c8608dd in QWidgetWindow::handleMouseEvent
(this=this at entry=0x3fb02f0, event=event at entry=0x7ffdd9dbf4d0) at
kernel/qwidgetwindow.cpp:452
#59 0x00007fbb2c862b3b in QWidgetWindow::event (this=0x3fb02f0,
event=0x7ffdd9dbf4d0) at kernel/qwidgetwindow.cpp:210
#60 0x00007fbb2c80305c in QApplicationPrivate::notify_helper
(this=this at entry=0x17c9ec0, receiver=receiver at entry=0x3fb02f0,
e=e at entry=0x7ffdd9dbf4d0) at kernel/qapplication.cpp:3716
#61 0x00007fbb2c808516 in QApplication::notify (this=0x7ffdd9dbf960,
receiver=0x3fb02f0, e=0x7ffdd9dbf4d0) at kernel/qapplication.cpp:3499
#62 0x00007fbb2b24e62b in QCoreApplication::notifyInternal
(this=0x7ffdd9dbf960, receiver=receiver at entry=0x3fb02f0,
event=event at entry=0x7ffdd9dbf4d0) at kernel/qcoreapplication.cpp:965
#63 0x00007fbb2b590521 in QCoreApplication::sendSpontaneousEvent
(event=0x7ffdd9dbf4d0, receiver=0x3fb02f0) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#64 QGuiApplicationPrivate::processMouseEvent (e=0x421e990) at
kernel/qguiapplication.cpp:1804
#65 0x00007fbb2b5921e5 in QGuiApplicationPrivate::processWindowSystemEvent
(e=e at entry=0x421e990) at kernel/qguiapplication.cpp:1596
#66 0x00007fbb2b575f38 in QWindowSystemInterface::sendWindowSystemEvents
(flags=...) at kernel/qwindowsysteminterface.cpp:625
#67 0x00007fbb1fcbb070 in userEventSourceDispatch (source=<optimized out>) at
eventdispatchers/qeventdispatcher_glib.cpp:70
#68 0x00007fbb27594127 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#69 0x00007fbb27594380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#70 0x00007fbb2759442c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#71 0x00007fbb2b2a4a7f in QEventDispatcherGlib::processEvents (this=0x180fd40,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#72 0x00007fbb2b24bdea in QEventLoop::exec (this=this at entry=0x7ffdd9dbf850,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#73 0x00007fbb2b253e8c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1229
#74 0x00007fbb2b587c3c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1542
#75 0x00007fbb2c7ff495 in QApplication::exec () at kernel/qapplication.cpp:2976
#76 0x00000000004859d2 in main (argc=1, argv=<optimized out>) at
/build/kdenlive-USf84j/kdenlive-16.04.1+git201606042032~ubuntu16.04.1/src/main.cpp:130

Reported using DrKonqi

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