Bug 377943

Summary: systemsettings5 crash every time kcm_sddm was opened
Product: [Applications] systemsettings Reporter: Alessandro <alessandro.sturniolo>
Component: kcm_sddmAssignee: David Edmundson <kde>
Status: RESOLVED FIXED    
Severity: crash CC: edisonalvaringo, jesaenh, orlando, weidanz.adolph
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.9.3   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Alessandro 2017-03-22 17:39:21 UTC 
Application: systemsettings5 (5.9.3)

Qt Version: 5.8.0
Frameworks Version: 5.32.0
Operating System: Linux 4.4.49-16-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
Every time I open kcm_sddm (or the "Startup and Shutdown" group) systemsettings5 crash.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f781518f740 (LWP 18681))]

Thread 7 (Thread 0x7f78070df700 (LWP 18784)):
#0  0x000000351be8d7d4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x000000351be4bc09 in g_main_context_query () at /usr/lib64/libglib-2.0.so.0
#2  0x000000351be4c27f in  () at /usr/lib64/libglib-2.0.so.0
#3  0x000000351be4c42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x000000352b8b48ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x000000352b8646ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x000000352b6ac9aa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x000000353cae9108 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x000000352b6b1019 in  () at /usr/lib64/libQt5Core.so.5
#9  0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#10 0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f7802844700 (LWP 18783)):
#0  0x00000035132dd51d in read () at /lib64/libc.so.6
#1  0x000000351be8c670 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x000000351be4be49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x000000351be4c2a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x000000351be4c64a in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#5  0x00000035208e6386 in  () at /usr/lib64/libgio-2.0.so.0
#6  0x000000351be709a5 in  () at /usr/lib64/libglib-2.0.so.0
#7  0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#8  0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7803eec700 (LWP 18782)):
#0  0x00000035132f618f in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00000035132e1492 in poll () at /lib64/libc.so.6
#2  0x000000351be4c314 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x000000351be4c42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x000000351be4c469 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x000000351be709a5 in  () at /usr/lib64/libglib-2.0.so.0
#6  0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#7  0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f780a434700 (LWP 18687)):
#0  0x0000003513e0d458 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f780c4e8e44 in  () at /usr/lib64/libGLX_nvidia.so.0
#2  0x00007f780b200394 in  () at /usr/lib64/libnvidia-glcore.so.378.13
#3  0x00007f780c4e812c in  () at /usr/lib64/libGLX_nvidia.so.0
#4  0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#5  0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f78115c4700 (LWP 18685)):
#0  0x00000035132dd51d in read () at /lib64/libc.so.6
#1  0x000000351be8c670 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x000000351be4be49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x000000351be4c2a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x000000351be4c42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x000000352b8b48ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x000000352b8646ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x000000352b6ac9aa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x000000352ca19d15 in  () at /usr/lib64/libQt5DBus.so.5
#9  0x000000352b6b1019 in  () at /usr/lib64/libQt5Core.so.5
#10 0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#11 0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f781303c700 (LWP 18683)):
#0  0x00000035132e149d in poll () at /lib64/libc.so.6
#1  0x000000351420d3c2 in _xcb_conn_wait () at /usr/lib64/libxcb.so.1
#2  0x000000351420f10f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f781348ec29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x000000352b6b1019 in  () at /usr/lib64/libQt5Core.so.5
#5  0x0000003513e08734 in start_thread () at /lib64/libpthread.so.0
#6  0x00000035132e9d3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f781518f740 (LWP 18681)):
[KCrash Handler]
#6  0x0000003b0716f440 in  () at /usr/lib64/libQt5Gui.so.5
#7  0x0000003b0716c9dc in QPixmap::load(QString const&, char const*, QFlags<Qt::ImageConversionFlag>) () at /usr/lib64/libQt5Gui.so.5
#8  0x0000003b0716cb90 in QPixmap::QPixmap(QString const&, char const*, QFlags<Qt::ImageConversionFlag>) () at /usr/lib64/libQt5Gui.so.5
#9  0x00007f7806490a60 in  () at /usr/lib64/qt5/plugins/kcm_sddm.so
#10 0x0000003b057b27e8 in QListView::paintEvent(QPaintEvent*) () at /usr/lib64/libQt5Widgets.so.5
#11 0x0000003b055a5dc7 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#12 0x0000003b056863ae in QFrame::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#13 0x0000003b0579baeb in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#14 0x000000352b866111 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#15 0x0000003b05562195 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x0000003b055690f0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x000000352b866245 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#18 0x0000003b0559ebfa in QWidgetPrivate::sendPaintEvent(QRegion const&) () at /usr/lib64/libQt5Widgets.so.5
#19 0x0000003b0559f1ea in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#22 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#27 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#28 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#32 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#33 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#34 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#35 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#36 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#37 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#38 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#39 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#40 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#41 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#42 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#43 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#44 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#45 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#47 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#48 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#49 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#50 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#51 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#52 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#53 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#54 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#55 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#56 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#57 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#58 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#59 0x0000003b0559fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#60 0x0000003b0559fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#61 0x0000003b0559ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#62 0x0000003b05570cbe in  () at /usr/lib64/libQt5Widgets.so.5
#63 0x0000003b05571e99 in  () at /usr/lib64/libQt5Widgets.so.5
#64 0x0000003b05590f1f in QWidgetPrivate::syncBackingStore() () at /usr/lib64/libQt5Widgets.so.5
#65 0x0000003b055a5a0d in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#66 0x0000003b0569bcbb in QMainWindow::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#67 0x0000003b0b47d237 in KMainWindow::event(QEvent*) () at /usr/lib64/libKF5XmlGui.so.5
#68 0x0000003b0b4b98f5 in KXmlGuiWindow::event(QEvent*) () at /usr/lib64/libKF5XmlGui.so.5
#69 0x0000003b055621bc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#70 0x0000003b055690f0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#71 0x000000352b866245 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#72 0x000000352b8682a3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#73 0x000000352b8b5043 in  () at /usr/lib64/libQt5Core.so.5
#74 0x000000351be4c134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#75 0x000000351be4c388 in  () at /usr/lib64/libglib-2.0.so.0
#76 0x000000351be4c42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#77 0x000000352b8b488c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#78 0x000000352b8646ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#79 0x000000352b86c344 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#80 0x000000000040cf64 in  ()
#81 0x00000035132206e5 in __libc_start_main () at /lib64/libc.so.6
#82 0x000000000040cfc9 in _start ()

Reported using DrKonqi
Comment 1 Txutxifel 2017-03-24 07:20:17 UTC 
I have two computers (PC and laptop) with openSUSE 42.2 and 5.9.3. I have same error, but only in my PC, my laptop works perfect
Comment 2 Alessandro 2017-03-24 09:48:17 UTC 
I have updated to 5.9.4 and it still crash every time I open it.
I have also a workstation where it has never crashed (regardless of the version).
On the PC where it crashes, before it start to crash every time, I remember, I had some customization, creating avatars for users (but I don't remember how I have done).
Comment 3 Alessandro 2017-03-24 16:14:51 UTC 
Another backtrace with debuginfo installed:

Thread 1 "kcmshell5" received signal SIGSEGV, Segmentation fault.
0x000000326836f440 in QPMCache::insert(QString const&, QPixmap const&, int) () from /usr/lib64/libQt5Gui.so.5
(gdb) bt
#0  0x000000326836f440 in QPMCache::insert(QString const&, QPixmap const&, int) () at /usr/lib64/libQt5Gui.so.5
#1  0x000000326836c9dc in QPixmap::load(QString const&, char const*, QFlags<Qt::ImageConversionFlag>) () at /usr/lib64/libQt5Gui.so.5
#2  0x000000326836cb90 in QPixmap::QPixmap(QString const&, char const*, QFlags<Qt::ImageConversionFlag>) () at /usr/lib64/libQt5Gui.so.5
#3  0x00007ffff25f1a60 in ThemesDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const (this=0x860790, painter=0x7fffffffa300, option=..., index=...) at /usr/src/debug/sddm-kcm-5.9.4/src/themesdelegate.cpp:58
#4  0x00000032671b27e8 in QListView::paintEvent(QPaintEvent*) () at /usr/lib64/libQt5Widgets.so.5
#5  0x0000003266fa5dc7 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#6  0x00000032670863ae in QFrame::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#7  0x000000326719baeb in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#8  0x000000352b866111 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#9  0x0000003266f62195 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x0000003266f690f0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#11 0x000000352b866245 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#12 0x0000003266f9ebfa in QWidgetPrivate::sendPaintEvent(QRegion const&) () at /usr/lib64/libQt5Widgets.so.5
#13 0x0000003266f9f1ea in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#14 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#15 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#18 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#19 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#21 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#22 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int---Type <return> to continue, or q <return> to quit---
, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#26 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#27 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#28 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#29 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#32 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#33 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#34 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#35 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#36 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#37 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#38 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#39 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#40 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#41 0x0000003266f9fdec in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#42 0x0000003266f9fc64 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQt5Widgets.so.5
#43 0x0000003266f9ed76 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
    at /usr/lib64/libQt5Widgets.so.5
#44 0x0000003266f70cbe in QWidgetBackingStore::doSync() () at /usr/lib64/libQt5Widgets.so.5
#45 0x0000003266f71c91 in QWidgetBackingStore::sync(QWidget*, QRegion const&) () at /usr/lib64/libQt5Widgets.so.5
---Type <return> to continue, or q <return> to quit---
#46 0x0000003266fc111b in QWidgetWindow::handleExposeEvent(QExposeEvent*) () at /usr/lib64/libQt5Widgets.so.5
#47 0x0000003266fc1b93 in QWidgetWindow::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#48 0x0000003266f621bc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#49 0x0000003266f690f0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#50 0x000000352b866245 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#51 0x0000003268303de1 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) ()
    at /usr/lib64/libQt5Gui.so.5
#52 0x000000326830490d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) ()
    at /usr/lib64/libQt5Gui.so.5
#53 0x00000032682e43fb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /usr/lib64/libQt5Gui.so.5
#54 0x00007ffff62f4da0 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5XcbQpa.so.5
#55 0x000000351be4c134 in g_main_dispatch (context=0x645260) at gmain.c:3154
#56 0x000000351be4c134 in g_main_context_dispatch (context=context@entry=0x645260) at gmain.c:3769
#57 0x000000351be4c388 in g_main_context_iterate (context=context@entry=0x645260, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3840
#58 0x000000351be4c42c in g_main_context_iteration (context=0x645260, may_block=1) at gmain.c:3901
#59 0x000000352b8b488c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#60 0x000000352b8646ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#61 0x000000352b86c344 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#62 0x000000326ce0857c in kdemain(int, char**) (_argc=2, _argv=<optimized out>) at /usr/src/debug/kde-cli-tools-5.9.4/kcmshell/main.cpp:308
#63 0x00000035132206e5 in __libc_start_main (main=
    0x400760 <main(int, char**)>, argc=2, argv=0x7fffffffdab8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdaa8) at libc-start.c:289
#64 0x0000000000400799 in _start () at ../sysdeps/x86_64/start.S:118
Comment 4 Alessandro 2017-03-24 16:39:02 UTC 
Via strace I found that it crashes just after it open a file: /usr/share/sddm/themes/breeze/preview.png.
So I renamed this file, and now kcm_sddm don't crash anymore.
Comment 5 Christoph Feck 2017-06-26 16:32:11 UTC 
*** Bug 377404 has been marked as a duplicate of this bug. ***
Comment 6 Christoph Feck 2017-06-26 16:33:36 UTC 
*** Bug 379368 has been marked as a duplicate of this bug. ***
Comment 7 Christoph Feck 2017-06-26 16:34:14 UTC 
*** Bug 381249 has been marked as a duplicate of this bug. ***
Comment 8 Adolph Weidanz 2017-06-26 22:01:38 UTC 
Alessandro, thank you very much, that fixed it.
Comment 9 Alessandro 2017-06-27 06:38:14 UTC 
I can confirm that on the latest versions, it doesn't crashes anymore.
Thanks