Application: dragon (18.11.70)

Qt Version: 5.11.1
Frameworks Version: 5.48.0
Operating System: Linux 4.13.0-45-generic x86_64
Distribution: KDE neon Developer Edition

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

I opened a MP4 video from a SD card by clicking it in Dolphin. It can be reproduced but it does not crash every time.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dragon Player (dragon), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5a71a7b900 (LWP 14210))]

Thread 3 (Thread 0x7f5a34b52700 (LWP 14217)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5a39fc570b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#2  0x00007f5a39fc5427 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#3  0x00007f5a6a2b96ba in start_thread (arg=0x7f5a34b52700) at pthread_create.c:333
#4  0x00007f5a6cda441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f5a55cc0700 (LWP 14212)):
#0  0x00007f5a6cd9874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5a67de238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5a67de249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5a6d9b90bb in QEventDispatcherGlib::processEvents (this=0x7f5a500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f5a6d9605ba in QEventLoop::exec (this=this@entry=0x7f5a55cbfc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f5a6d7955e4 in QThread::exec (this=this@entry=0x7f5a6e079d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:525
#6  0x00007f5a6de00f35 in QDBusConnectionManager::run (this=0x7f5a6e079d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#7  0x00007f5a6d7a0727 in QThreadPrivate::start (arg=0x7f5a6e079d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:367
#8  0x00007f5a6a2b96ba in start_thread (arg=0x7f5a55cc0700) at pthread_create.c:333
#9  0x00007f5a6cda441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f5a71a7b900 (LWP 14210)):
[KCrash Handler]
#6  QWidgetPrivate::windowHandle (this=<optimized out>) at ../../include/QtWidgets/5.11.1/QtWidgets/private/../../../../../src/widgets/kernel/qwidget_p.h:1010
#7  QWidget::windowHandle (this=0xd47990) at kernel/qwidget.cpp:2627
#8  0x00007f5a70f49880 in KJobWidgets::setWindow (job=0xfc9e30, widget=0xd47990) at /workspace/build/src/kjobwidgets.cpp:30
#9  0x000000000043032b in Dragon::MainWindow::load (this=0xd47990, url=...) at /workspace/build/src/app/mainWindow.cpp:568
#10 0x0000000000435eb4 in Dragon::MainWindow::open (this=0xd47990, url=...) at /workspace/build/src/app/mainWindow.cpp:524
#11 0x000000000042d555 in Dragon::PlayerApplication::newInstance (this=0x7fff136d23f0, playDisc=<optimized out>, uris=...) at /workspace/build/src/app/playerApplication.cpp:81
#12 0x000000000042ddeb in Dragon::PlayerApplication::slotActivateRequested (this=0x7fff136d23f0, arguments=..., workingDirectory=...) at /workspace/build/src/app/playerApplication.cpp:54
#13 0x00007f5a6d98f2a6 in QtPrivate::QSlotObjectBase::call (a=0x7fff136d1960, r=0x7fff136d23f0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#14 QMetaObject::activate (sender=0x7fff136d2410, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3754
#15 0x00007f5a704a5ee7 in KDBusService::activateRequested(QStringList const&, QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#16 0x00007f5a704a02b4 in KDBusService::CommandLine(QStringList const&, QString const&, QMap<QString, QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#17 0x00007f5a704a5d4d in ?? () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#18 0x00007f5a704a5e67 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#19 0x00007f5a6de0c434 in QDBusConnectionPrivate::deliverCall (this=this@entry=0x7f5a500030f0, object=object@entry=0xd34ac0, msg=..., metaTypes=..., slotIdx=<optimized out>) at qdbusintegrator.cpp:991
#20 0x00007f5a6de10d9a in QDBusConnectionPrivate::activateCall (this=this@entry=0x7f5a500030f0, object=0xd34ac0, flags=flags@entry=273, msg=...) at qdbusintegrator.cpp:894
#21 0x00007f5a6de116ab in QDBusConnectionPrivate::activateObject (this=0x7f5a500030f0, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1477
#22 0x00007f5a6de13ebe in QDBusActivateObjectEvent::placeMetaCall (this=0x7f5a5001cc90) at qdbusintegrator.cpp:1597
#23 0x00007f5a6d98ffb9 in QObject::event (this=0x7fff136d2410, e=<optimized out>) at kernel/qobject.cpp:1251
#24 0x00007f5a6e9bf39c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x7fff136d2410, e=0x7f5a5001cc90) at kernel/qapplication.cpp:3727
#25 0x00007f5a6e9c6ab0 in QApplication::notify (this=0x7fff136d23f0, receiver=0x7fff136d2410, e=0x7f5a5001cc90) at kernel/qapplication.cpp:3486
#26 0x00007f5a6d962228 in QCoreApplication::notifyInternal2 (receiver=0x7fff136d2410, event=event@entry=0x7f5a5001cc90) at kernel/qcoreapplication.cpp:1048
#27 0x00007f5a6d964e2e in QCoreApplication::sendEvent (event=0x7f5a5001cc90, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xcb8e40) at kernel/qcoreapplication.cpp:1745
#29 0x00007f5a6d9652a8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#30 0x00007f5a6d9b9a93 in postEventSourceDispatch (s=0xd13f60) at kernel/qeventdispatcher_glib.cpp:276
#31 0x00007f5a67de2197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f5a67de23f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f5a67de249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f5a6d9b909f in QEventDispatcherGlib::processEvents (this=this@entry=0xd129a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#35 0x00007f5a604179a1 in QPAEventDispatcherGlib::processEvents (this=0xd129a0, flags=...) at qeventdispatcher_glib.cpp:69
#36 0x00007f5a6d9605ba in QEventLoop::exec (this=this@entry=0x7fff136d22a0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#37 0x00007f5a6d9696c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#38 0x00007f5a6e1aaf8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#39 0x00007f5a6e9bf2f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#40 0x000000000041aa48 in main (argc=2, argv=<optimized out>) at /workspace/build/src/app/main.cpp:90

The reporter indicates this bug may be a duplicate of or related to bug 395240.

Possible duplicates by query: bug 395240.

Reported using DrKonqi