[gwenview] [Bug 370977] New: Gwenview crash when video is paused

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370977

Bug ID: 370977
   Summary: Gwenview crash when video is paused
   Product: gwenview
   Version: unspecified
  Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
  Keywords: drkonqi
  Severity: crash
  Priority: NOR
 Component: general
  Assignee: gwenview-bugs-n...@kde.org
  Reporter: manfred.kitzbich...@gmail.com
CC: myr...@kde.org

Application: gwenview (16.08.1)

Qt Version: 5.7.0
Frameworks Version: 5.26.0
Operating System: Linux 4.7.6-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
Played a video, pressed space to pause -> crash

This happens every time. When I presse ESC instead, I can get back to the
browse overview without crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ffba90839c0 (LWP 4383))]

Thread 3 (Thread 0x7ffa47b1c700 (LWP 4388)):
#0  0x7ffb9dbf84b8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x7ffba4110346 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib64/libQt5Core.so.5
#2  0x7ffba410bb82 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x7ffba410f558 in ?? () from /usr/lib64/libQt5Core.so.5
#4  0x7ffb9dbf2454 in start_thread () from /lib64/libpthread.so.0
#5  0x7ffba3a1c3ff in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ffb8f439700 (LWP 4385)):
#0  0x7ffba3a136ed in poll () from /lib64/libc.so.6
#1  0x7ffb9c37b876 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x7ffb9c37b98c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#3  0x7ffba433279b in
QEventDispatcherGlib::processEvents(QFlags) ()
from /usr/lib64/libQt5Core.so.5
#4  0x7ffba42dc1ea in
QEventLoop::exec(QFlags) () from
/usr/lib64/libQt5Core.so.5
#5  0x7ffba410a8b3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x7ffba36bdc15 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x7ffba410f558 in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x7ffb9dbf2454 in start_thread () from /lib64/libpthread.so.0
#9  0x7ffba3a1c3ff in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ffba90839c0 (LWP 4383)):
[KCrash Handler]
#6  0x in ?? ()
#7  0x7ffba5c94c01 in
QGraphicsItem::dragLeaveEvent(QGraphicsSceneDragDropEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#8  0x7ffba5cab232 in QGraphicsItemPrivate::setVisibleHelper(bool, bool,
bool, bool) () from /usr/lib64/libQt5Widgets.so.5
#9  0x7ffba5cbf442 in QGraphicsProxyWidget::eventFilter(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#10 0x7ffba42ddf61 in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) ()
from /usr/lib64/libQt5Core.so.5
#11 0x7ffba59be905 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#12 0x7ffba59c60e1 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#13 0x7ffba42de200 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#14 0x7ffba5a00cfa in QWidgetPrivate::hide_helper() () from
/usr/lib64/libQt5Widgets.so.5
#15 0x7ffba5a05630 in QWidget::setVisible(bool) () from
/usr/lib64/libQt5Widgets.so.5
#16 0x7ffba5a01028 in
QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) () from
/usr/lib64/libQt5Widgets.so.5
#17 0x7ffba5a014d8 in QWidget::~QWidget() () from
/usr/lib64/libQt5Widgets.so.5
#18 0x7ffba1c72c2c in ?? () from /usr/lib64/libphonon4qt5.so.4
#19 0x7ffba5cbb318 in QGraphicsProxyWidget::~QGraphicsProxyWidget() () from
/usr/lib64/libQt5Widgets.so.5
#20 0x7ffba87a6e79 in
Gwenview::DoubleClickableProxyWidget::~DoubleClickableProxyWidget
(this=0x1ea4190, __in_chrg=) at
/usr/src/debug/gwenview-16.08.1/lib/documentview/videoviewadapter.cpp:186
#21 Gwenview::DoubleClickableProxyWidget::~DoubleClickableProxyWidget
(this=0x1ea4190, __in_chrg=) at
/usr/src/debug/gwenview-16.08.1/lib/documentview/videoviewadapter.cpp:186
#22 0x7ffba5cae4be in QGraphicsItem::~QGraphicsItem() () from
/usr/lib64/libQt5Widgets.so.5
#23 0x7ffba5cae643 in QGraphicsObject::~QGraphicsObject() () from
/usr/lib64/libQt5Widgets.so.5
#24 0x7ffba5cfae9c in QGraphicsWidget::~QGraphicsWidget() () from
/usr/lib64/libQt5Widgets.so.5
#25 0x7ffba879bdf9 in Gwenview::DocumentView::~DocumentView
(this=0x151b860, __in_chrg=) at
/usr/src/debug/gwenview-16.08.1/lib/documentview/documentview.cpp:344
#26 0x7ffba430ad90 in QObject::event(QEvent*) () from
/usr/lib64/libQt5Core.so.5
#27 0x7ffba5cfc1ab in QGraphicsWidget::event(QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#28 0x7ffba59be92c in 

[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #10 from Manfred Kitzbichler  ---
For what it's worth, after I applied the patch below to my version of
libqt5declarative the problem is gone. It also has the positive side effect,
that plasmashell doesn't crash anymore at logout and probably there are quite a
few other Qt applications that crashed occasionally because of this bug.

https://codereview.qt-project.org/#/c/170844/

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[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #9 from Manfred Kitzbichler  ---
I did some debugging with gdb and the code line in question is visited about
two dozen times without problem. When it finally crashes that's presumably
because the "listener" entry in the "change" structure has this rather peculiar
value:

print *change.listener
$58 = {_vptr.QQuickItemChangeListener = 0x4545454545454545}

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[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #7 from Manfred Kitzbichler  ---
This is the offending assignment:

Thread 1 "kscreenlocker_g" received signal SIGSEGV, Segmentation fault.
0x75de07ff in QQuickItem::~QQuickItem (this=0xf58080,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2341
2341QQuickAnchorsPrivate *anchor =
change.listener->anchorPrivate();

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[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #6 from Manfred Kitzbichler  ---
Just installed the whole >200MB libQtQuick5 debugsource. This is what I am
getting:

(gdb) bt
#0  0x75de07ff in QQuickItem::~QQuickItem (this=0xf58080,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2341
#1  0x75dfb396 in
QQmlPrivate::QQmlElement::~QQmlElement (this=0xf58080,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#2  QQmlPrivate::QQmlElement::~QQmlElement (this=0xf58080,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#3  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#4  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#5  0x75de09f3 in QQuickItem::~QQuickItem (this=0xf74830,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2316
#6  0x75dfbb06 in QQmlPrivate::QQmlElement::~QQmlElement
(this=0xf74830, __in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#7  QQmlPrivate::QQmlElement::~QQmlElement (this=0xf74830,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#8  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#9  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#10 0x75de09f3 in QQuickItem::~QQuickItem (this=0xfae9a0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2316
#11 0x75dfb396 in
QQmlPrivate::QQmlElement::~QQmlElement (this=0xfae9a0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#12 QQmlPrivate::QQmlElement::~QQmlElement (this=0xfae9a0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#13 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#14 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#15 0x75de09f3 in QQuickItem::~QQuickItem (this=0xf88890,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2316
#16 0x7fffdeb85c26 in ?? ()
#17 0x00941710 in ?? ()
#18 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#19 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#20 0x75de09f3 in QQuickItem::~QQuickItem (this=0x97bec0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2316
#21 0x75dfbea6 in QQmlPrivate::QQmlElement::~QQmlElement
(this=0x97bec0, __in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#22 QQmlPrivate::QQmlElement::~QQmlElement (this=0x97bec0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#23 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#24 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#25 0x75de09f3 in QQuickItem::~QQuickItem (this=0x9eaec0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickitem.cpp:2316
#26 0x75dfbb06 in QQmlPrivate::QQmlElement::~QQmlElement
(this=0x9eaec0, __in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#27 QQmlPrivate::QQmlElement::~QQmlElement (this=0x9eaec0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlprivate.h:104
#28 0x76baf548 in KDeclarative::QmlObjectPrivate::~QmlObjectPrivate
(this=0x6fd140, __in_chrg=)
---Type  to continue, or q  to quit---
at /usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobject.cpp:73
#29 KDeclarative::QmlObject::~QmlObject (this=0x6c9470, __in_chrg=) at /usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobject.cpp:201
#30 0x76bb00a9 in
KDeclarative::QmlObjectSharedEngine::~QmlObjectSharedEngine (this=0x6c9470,
__in_chrg=)
at
/usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobjectsharedengine.cpp:79
#31 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#32 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#33 0x74ca91d9 in QWindow::~QWindow() () from /usr/lib64/libQt5Gui.so.5
#34 0x75decb24 in QQuickWindow::~QQuickWindow (this=0x6944b0,
__in_chrg=)
at
/usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/items/qquickwindow.cpp:1210
#35 0x779ca319 in
KQuickAddons::QuickViewSharedEngine::~QuickViewSharedEngine() () from
/usr/lib64/libKF5QuickAddons.so.5
#36 

[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #5 from Manfred Kitzbichler  ---
Does this help?

#0  0x75de07ff in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#1  0x75dfb396 in ?? () from /usr/lib64/libQt5Quick.so.5
#2  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#3  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#4  0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#5  0x75dfbb06 in ?? () from /usr/lib64/libQt5Quick.so.5
#6  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#7  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#8  0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#9  0x75dfb396 in ?? () from /usr/lib64/libQt5Quick.so.5
#10 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#11 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#12 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#13 0x7fffdeb85c26 in ?? ()
#14 0x0098c370 in ?? ()
#15 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#16 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#17 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#18 0x75dfbea6 in ?? () from /usr/lib64/libQt5Quick.so.5
#19 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#20 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#21 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#22 0x75dfbb06 in ?? () from /usr/lib64/libQt5Quick.so.5
#23 0x76baf548 in KDeclarative::QmlObjectPrivate::~QmlObjectPrivate
(this=0x6fd0d0, __in_chrg=)
at /usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobject.cpp:73
#24 KDeclarative::QmlObject::~QmlObject (this=0x6b0750, __in_chrg=) at /usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobject.cpp:201
#25 0x76bb00a9 in
KDeclarative::QmlObjectSharedEngine::~QmlObjectSharedEngine (this=0x6b0750,
__in_chrg=)
at
/usr/src/debug/kdeclarative-5.26.0/src/kdeclarative/qmlobjectsharedengine.cpp:79
#26 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#27 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#28 0x74ca91d9 in QWindow::~QWindow() () from /usr/lib64/libQt5Gui.so.5
#29 0x75decb24 in QQuickWindow::~QQuickWindow() () from
/usr/lib64/libQt5Quick.so.5
#30 0x779ca319 in
KQuickAddons::QuickViewSharedEngine::~QuickViewSharedEngine() () from
/usr/lib64/libKF5QuickAddons.so.5
#31 0x0040d1ae in
qDeleteAll::const_iterator>
(end=..., begin=...) at /usr/include/qt5/QtCore/qalgorithms.h:323
#32 qDeleteAll > (c=...) at
/usr/include/qt5/QtCore/qalgorithms.h:331
#33 ScreenLocker::UnlockApp::~UnlockApp (this=0x7fffdb20,
__in_chrg=) at
/usr/src/debug/kscreenlocker-5.8.0/greeter/greeterapp.cpp:118
#34 0x00409ba0 in main (argc=, argv=) at
/usr/src/debug/kscreenlocker-5.8.0/greeter/main.cpp:79

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[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

--- Comment #3 from Manfred Kitzbichler  ---
Here is a hopefully more informative backtrace:

#0  0x75de07ff in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#1  0x75dfb396 in ?? () from /usr/lib64/libQt5Quick.so.5
#2  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#3  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#4  0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#5  0x75dfbb06 in ?? () from /usr/lib64/libQt5Quick.so.5
#6  0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#7  0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#8  0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#9  0x75dfb396 in ?? () from /usr/lib64/libQt5Quick.so.5
#10 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#11 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#12 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#13 0x7fffdeb85c26 in ?? ()
#14 0x0098c5f0 in ?? ()
#15 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#16 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#17 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#18 0x75dfbea6 in ?? () from /usr/lib64/libQt5Quick.so.5
#19 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#20 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#21 0x75de09f3 in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5
#22 0x75dfbb06 in ?? () from /usr/lib64/libQt5Quick.so.5
#23 0x76baf548 in KDeclarative::QmlObject::~QmlObject() () from
/usr/lib64/libKF5Declarative.so.5
#24 0x76bb00a9 in
KDeclarative::QmlObjectSharedEngine::~QmlObjectSharedEngine() () from
/usr/lib64/libKF5Declarative.so.5
#25 0x747736d1 in QObjectPrivate::deleteChildren() () from
/usr/lib64/libQt5Core.so.5
#26 0x7477ca4f in QObject::~QObject() () from
/usr/lib64/libQt5Core.so.5
#27 0x74ca91d9 in QWindow::~QWindow() () from /usr/lib64/libQt5Gui.so.5
#28 0x75decb24 in QQuickWindow::~QQuickWindow() () from
/usr/lib64/libQt5Quick.so.5
#29 0x779ca319 in
KQuickAddons::QuickViewSharedEngine::~QuickViewSharedEngine() () from
/usr/lib64/libKF5QuickAddons.so.5
#30 0x0040d1ae in
qDeleteAll::const_iterator>
(end=..., begin=...) at /usr/include/qt5/QtCore/qalgorithms.h:323
#31 qDeleteAll > (c=...) at
/usr/include/qt5/QtCore/qalgorithms.h:331
#32 ScreenLocker::UnlockApp::~UnlockApp (this=0x7fffdb60,
__in_chrg=) at
/usr/src/debug/kscreenlocker-5.8.0/greeter/greeterapp.cpp:118
#33 0x00409ba0 in main (argc=, argv=) at
/usr/src/debug/kscreenlocker-5.8.0/greeter/main.cpp:79

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[kscreenlocker] [Bug 370422] kscreenlocker crashes when unlocking the session after resume from s2ram

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370422

Manfred Kitzbichler  changed:

   What|Removed |Added

 CC||manfred.kitzbichler@gmail.c
   ||om

--- Comment #2 from Manfred Kitzbichler  ---
Same here. I just did a zypper dup to the newest Tumbleweed repository with
Plasma 5.8 and Qt 5.7 and I am getting a crash everytime. Also when starting
the greeter manually from the console as suggested by Martin. GDB says it
crashes in libQtQuick5.so:

Thread 1 "kscreenlocker_g" received signal SIGSEGV, Segmentation fault.
0x75de07ff in QQuickItem::~QQuickItem() () from
/usr/lib64/libQt5Quick.so.5

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[gwenview] [Bug 361037] New: Gwenview export plugin to email images is crashing

[Manfred Kitzbichler via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=361037

Bug ID: 361037
   Summary: Gwenview export plugin to email images is crashing
   Product: gwenview
   Version: unspecified
  Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
  Keywords: drkonqi
  Severity: crash
  Priority: NOR
 Component: general
  Assignee: gwenview-bugs-n...@kde.org
  Reporter: manfred.kitzbich...@gmail.com
CC: myr...@kde.org

Application: gwenview (4.14.0 pre)
KDE Platform Version: 4.14.14
Qt Version: 4.8.7
Operating System: Linux 4.5.0-1-default x86_64
Distribution: "openSUSE 20150903 (Tumbleweed) (x86_64)"

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

I selected a view images and tried to email them using the export plugin. I am
getting the GUI to select image dimensions and filesize but when I press the
send button the plugin crashes.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb39f9d1940 (LWP 26194))]

Thread 10 (Thread 0x7fb386c5e700 (LWP 26195)):
#0  0x7fb39c3a949d in poll () at /lib64/libc.so.6
#1  0x7fb39922b264 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x7fb39922b36c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3  0x7fb39ef7c26e in
QEventDispatcherGlib::processEvents(QFlags) ()
at /usr/lib64/libQtCore.so.4
#4  0x7fb39ef4c3e1 in
QEventLoop::processEvents(QFlags) () at
/usr/lib64/libQtCore.so.4
#5  0x7fb39ef4c6f5 in
QEventLoop::exec(QFlags) () at
/usr/lib64/libQtCore.so.4
#6  0x7fb39ee45a59 in QThread::exec() () at /usr/lib64/libQtCore.so.4
#7  0x7fb39ef30c1d in  () at /usr/lib64/libQtCore.so.4
#8  0x7fb39ee4823c in  () at /usr/lib64/libQtCore.so.4
#9  0x7fb3996fa4a4 in start_thread () at /lib64/libpthread.so.0
#10 0x7fb39c3b1ded in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fb37ebcc700 (LWP 26201)):
#0  0x7fb39c3aab13 in select () at /lib64/libc.so.6
#1  0x7fb39ef29a2f in  () at /usr/lib64/libQtCore.so.4
#2  0x7fb39ee4823c in  () at /usr/lib64/libQtCore.so.4
#3  0x7fb3996fa4a4 in start_thread () at /lib64/libpthread.so.0
#4  0x7fb39c3b1ded in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fb37e3cb700 (LWP 26608)):
#0  0x7fb39c3a949d in poll () at /lib64/libc.so.6
#1  0x7fb35f1d4418 in  () at /usr/lib64/libusb-1.0.so.0
#2  0x7fb3996fa4a4 in start_thread () at /lib64/libpthread.so.0
#3  0x7fb39c3b1ded in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fb37700 (LWP 26609)):
#0  0x7fb39970007f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x7fb39ee48754 in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQtCore.so.4
#2  0x7fb37ec954c8 in KIPIPlugins::KPRawThumbThread::run() () at
/usr/lib64/libkipiplugins.so.4.14.0
#3  0x7fb39ee4823c in  () at /usr/lib64/libQtCore.so.4
#4  0x7fb3996fa4a4 in start_thread () at /lib64/libpthread.so.0
#5  0x7fb39c3b1ded in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fb34d10f700 (LWP 26624)):
#0  0x7fb39970007f in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x7fb39ee48754 in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQtCore.so.4
#2  0x7fb39ac105c4 in KDcrawIface::RActionThreadBase::run() () at
/usr/lib64/libkdcraw.so.23
#3  0x7fb39ee4823c in  () at /usr/lib64/libQtCore.so.4
#4  0x7fb3996fa4a4 in start_thread () at /lib64/libpthread.so.0
#5  0x7fb39c3b1ded in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fb34c90e700 (LWP 26625)):
[KCrash Handler]
#6  0x7fb39bafc7a4 in XMPMeta::RegisterNamespace(char const*, char const*)
() at /usr/lib64/libexiv2.so.14
#7  0x7fb39bad8ecb in WXMPMeta_RegisterNamespace_1 () at
/usr/lib64/libexiv2.so.14
#8  0x7fb39bacad84 in TXMPMeta >::RegisterNamespace(char
const*, char const*) () at /usr/lib64/libexiv2.so.14
#9  0x7fb39bac7566 in Exiv2::XmpParser::initialize(void (*)(void*, bool),
void*) () at /usr/lib64/libexiv2.so.14
#10 0x7fb39bac7a17 in
Exiv2::XmpParser::encode(std::__cxx11::basic_string&, Exiv2::XmpData const&,
unsigned short, unsigned int) () at /usr/lib64/libexiv2.so.14
#11 0x7fb39ba5d3ec in Exiv2::JpegBase::doWriteMetadata(Exiv2::BasicIo&) ()
at /usr/lib64/libexiv2.so.14
#12 0x7fb39ba5e304 in Exiv2::JpegBase::writeMetadata() () at
/usr/lib64/libexiv2.so.14
#13 0x7fb37eedf598 in
KExiv2Iface::KExiv2::Private::saveOperations(QFileInfo const&,
std::auto_ptr) const () at /usr/lib64/libkexiv2.so.11
#14 0x7fb37eee2314 in KExiv2Iface::KExiv2::Private::saveToFile(QFileInfo
const&) const () at /usr/lib64/libkexiv2.so.11
#15 0x7fb37eedb683 in