Bug 372647

Summary:	Gwenview crashes on zooming/magnifying
Product:	[Applications] gwenview	Reporter:	benjamin.savs
Component:	general	Assignee:	Gwenview Bugs <gwenview-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	myriam, putz.alexey
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Test image

Description benjamin.savs 2016-11-18 23:02:58 UTC

Application: gwenview (16.08.2)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.27-2-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed:
When I magnify an image in gwenview it often, but not always 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 0x7fc24bb679c0 (LWP 22384))]

Thread 3 (Thread 0x7fc231420700 (LWP 22386)):
#0  0x00007fc2402167b9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fc2401d4969 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc2401d5230 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc2401d542c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fc246dfb32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc246da8fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc246be3f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fc2461981d5 in  () at /usr/lib64/libQt5DBus.so.5
#8  0x00007fc246be89e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc2406f9734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc2464f2d3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fc233420700 (LWP 22385)):
#0  0x00007fc2464ea49d in poll () at /lib64/libc.so.6
#1  0x00007fc23e2543e2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fc23e255fcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fc23578a839 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fc246be89e9 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc2406f9734 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fc2464f2d3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fc24bb679c0 (LWP 22384)):
[KCrash Handler]
#6  0x00007fc245337cf0 in  () at /usr/lib64/liblcms2.so.2
#7  0x00007fc24533e77b in  () at /usr/lib64/liblcms2.so.2
#8  0x00007fc24b26aab1 in Gwenview::RasterImageView::updateFromScaler(int, int, QImage const&) () at /usr/lib64/libgwenviewlib.so.5
#9  0x00007fc246dd51c3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fc24b2d3611 in Gwenview::ImageScaler::scaledRect(int, int, QImage const&) () at /usr/lib64/libgwenviewlib.so.5
#11 0x00007fc24b28ed74 in Gwenview::ImageScaler::scaleRect(QRect const&) () at /usr/lib64/libgwenviewlib.so.5
#12 0x00007fc24b28efaf in Gwenview::ImageScaler::doScale() () at /usr/lib64/libgwenviewlib.so.5
#13 0x00007fc24b26972c in Gwenview::RasterImageView::updateBuffer(QRegion const&) () at /usr/lib64/libgwenviewlib.so.5
#14 0x00007fc24b269863 in Gwenview::RasterImageView::onZoomChanged() () at /usr/lib64/libgwenviewlib.so.5
#15 0x00007fc24b25c15f in  () at /usr/lib64/libgwenviewlib.so.5
#16 0x00007fc24b2641c3 in Gwenview::DocumentView::setZoom(double) () at /usr/lib64/libgwenviewlib.so.5
#17 0x00007fc246dd51c3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007fc24b2d3d60 in Gwenview::ZoomWidget::zoomChanged(double) () at /usr/lib64/libgwenviewlib.so.5
#19 0x00007fc24b2c3cf3 in Gwenview::ZoomWidget::slotZoomSliderActionTriggered() () at /usr/lib64/libgwenviewlib.so.5
#20 0x00007fc246dd4bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#21 0x00007fc24858f381 in QAbstractSlider::actionTriggered(int) () at /usr/lib64/libQt5Widgets.so.5
#22 0x00007fc24858f9b9 in QAbstractSlider::triggerAction(QAbstractSlider::SliderAction) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007fc248623418 in QSlider::mouseMoveEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007fc2484d784e in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007fc248623a66 in QSlider::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x00007fc248495e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x00007fc24849ad14 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#28 0x00007fc246daafc5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#29 0x00007fc248499a10 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007fc2484f0911 in  () at /usr/lib64/libQt5Widgets.so.5
#31 0x00007fc2484f2eb3 in  () at /usr/lib64/libQt5Widgets.so.5
#32 0x00007fc248495e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#33 0x00007fc24849a49a in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#34 0x00007fc246daafc5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#35 0x00007fc2472ff68b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#36 0x00007fc247300e05 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#37 0x00007fc2472e2eeb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#38 0x00007fc2357b7bc0 in  () at /usr/lib64/libQt5XcbQpa.so.5
#39 0x00007fc2401d5134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#40 0x00007fc2401d5388 in  () at /usr/lib64/libglib-2.0.so.0
#41 0x00007fc2401d542c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#42 0x00007fc246dfb30c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#43 0x00007fc246da8fdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#44 0x00007fc246db0ec6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#45 0x000000000043431b in  ()
#46 0x00007fc2464296e5 in __libc_start_main () at /lib64/libc.so.6
#47 0x0000000000434619 in _start ()

Reported using DrKonqi

Comment 1 benjamin.savs 2016-11-18 23:07:12 UTC

It seems to only happen if I use the slider widget in the bottom left. Control + mouse wheel does not crash.

Comment 2 benjamin.savs 2016-11-18 23:27:05 UTC

Furthermore it only seems to happen with grayscale (png) images. With rgb png I cannot reproduce the crash, regardless of mousewheel or slider.

Comment 3 Alexey Putz 2016-11-19 12:53:44 UTC

Hello. Can you please share an image which leads to crash ? I will test it on my then.

Comment 4 Alexey Putz 2016-11-19 13:33:05 UTC

Created attachment 102319 [details]
Test image

Hello. I just did reproduce a bug and it caused a crash.
All you need is to use a slider on UI with an grayscale image.

Gwenview Version 16.04.3

Kubuntu 16.10
KDE Plasma Version : 5.7.5
KDE Frameworks Version : 5.26.0
Qt Version : 5.6.1
Kernel Version : 4.8.0-22-generic
OS Type: 64-bit

Comment 5 Christoph Feck 2016-11-21 21:38:27 UTC


*** This bug has been marked as a duplicate of bug 357548 ***