Application: muon-installer (1.3.1 "Daring Dalek")
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Via MSC, I just installed X11VNC sucessfully and MSC then displayed a tree of various lists, including software suppled by Kubuntu and software installed. 
- Unusual behavior I noticed:
I was clicking on the tree items to see their contents when this crash happened.
- Custom settings of the application:
I'm running the lastest Kubuntu stable (12.04) with all standard updates.

-- Backtrace:
Application: Muon Software Center (muon-installer), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe002bd5780 (LWP 5645))]

Thread 4 (Thread 0x7fdfec5e0700 (LWP 5648)):
#0  0x00007fdfff1e30bd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fdff9f428cf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdff9f07ba4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdff9f07fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdff9f08164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe000633426 in QEventDispatcherGlib::processEvents (this=0x7fdfe40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fe000602c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fe000602ed7 in QEventLoop::exec (this=0x7fdfec5dfdd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fe000501fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007fe0005e29ff in QInotifyFileSystemWatcherEngine::run (this=0x23d12d0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007fe000504fcb in QThreadPrivate::start (arg=0x23d12d0) at thread/qthread_unix.cpp:298
#11 0x00007fdffa5c4e9a in start_thread (arg=0x7fdfec5e0700) at pthread_create.c:308
#12 0x00007fdfff1f04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fdfe90b2700 (LWP 5661)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fdffc37d222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fdffc37d259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fdffa5c4e9a in start_thread (arg=0x7fdfe90b2700) at pthread_create.c:308
#4  0x00007fdfff1f04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fdfe37fe700 (LWP 5663)):
#0  __pthread_mutex_lock (mutex=0x7fdfd4000a60) at pthread_mutex_lock.c:50
#1  0x00007fdff9f435a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdff9f071df in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdff9f07f04 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdff9f08164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe000633426 in QEventDispatcherGlib::processEvents (this=0x7fdfd40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fe000602c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fe000602ed7 in QEventLoop::exec (this=0x7fdfe37fde00, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fe000501fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007fe000504fcb in QThreadPrivate::start (arg=0x7fdfdc003160) at thread/qthread_unix.cpp:298
#10 0x00007fdffa5c4e9a in start_thread (arg=0x7fdfe37fe700) at pthread_create.c:308
#11 0x00007fdfff1f04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe002bd5780 (LWP 5645)):
[KCrash Handler]
#6  QModelIndex (other=..., this=0x7fffb834fbd0) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:65
#7  QSortFilterProxyModel::parent (this=0x39f9600, child=...) at itemviews/qsortfilterproxymodel.cpp:1659
#8  0x00007fdfffeeb70b in parent (this=0x48d4560) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:393
#9  QTreeView::indexRowSizeHint (this=0x48405d0, index=...) at itemviews/qtreeview.cpp:2794
#10 0x00007fdfffeef439 in itemHeight (item=50, this=0x4840c20) at itemviews/qtreeview.cpp:3283
#11 QTreeViewPrivate::itemHeight (this=0x4840c20, item=50) at itemviews/qtreeview.cpp:3272
#12 0x00007fdfffeef6d3 in QTreeViewPrivate::updateScrollBars (this=0x4840c20) at itemviews/qtreeview.cpp:3504
#13 0x00007fdfffeefa8f in QTreeView::updateGeometries (this=0x48405d0) at itemviews/qtreeview.cpp:2721
#14 0x00007fdfff9d712a in QWidget::event (this=0x48405d0, event=0x7fffb8350b50) at kernel/qwidget.cpp:8516
#15 0x00007fdfffd973b6 in QFrame::event (this=0x48405d0, e=0x7fffb8350b50) at widgets/qframe.cpp:557
#16 0x00007fdfffeab89b in QAbstractItemView::viewportEvent (this=0x48405d0, event=0x7fffb8350b50) at itemviews/qabstractitemview.cpp:1644
#17 0x00007fdfffef34b5 in QTreeView::viewportEvent (this=0x48405d0, event=0x7fffb8350b50) at itemviews/qtreeview.cpp:1257
#18 0x00007fe000604028 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x483f7c0, event=0x7fffb8350b50) at kernel/qcoreapplication.cpp:986
#19 0x00007fdfff98685f in notify_helper (e=0x7fffb8350b50, receiver=0x483f7c0, this=0x205fd50) at kernel/qapplication.cpp:4555
#20 QApplicationPrivate::notify_helper (this=0x205fd50, receiver=0x483f7c0, e=0x7fffb8350b50) at kernel/qapplication.cpp:4531
#21 0x00007fdfff98b713 in QApplication::notify (this=0x7fffb8352c50, receiver=0x483f7c0, e=0x7fffb8350b50) at kernel/qapplication.cpp:4420
#22 0x00007fe00106a9e6 in KApplication::notify (this=0x7fffb8352c50, receiver=0x483f7c0, event=0x7fffb8350b50) at ../../kdeui/kernel/kapplication.cpp:311
#23 0x00007fe000603e9c in QCoreApplication::notifyInternal (this=0x7fffb8352c50, receiver=0x483f7c0, event=0x7fffb8350b50) at kernel/qcoreapplication.cpp:876
#24 0x00007fdfff9d1be5 in sendEvent (event=0x7fffb8350b50, receiver=0x483f7c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QWidgetPrivate::sendPendingMoveAndResizeEvents (this=0x4841300, recursive=false, disableUpdates=<optimized out>) at kernel/qwidget.cpp:7432
#26 0x00007fdfff9d96e1 in QWidgetPrivate::show_helper (this=<optimized out>) at kernel/qwidget.cpp:7483
#27 0x00007fdfff9d9607 in QWidgetPrivate::showChildren (this=<optimized out>, spontaneous=false) at kernel/qwidget.cpp:7850
#28 0x00007fdfff9d96fd in QWidgetPrivate::show_helper (this=<optimized out>) at kernel/qwidget.cpp:7489
#29 0x00007fdfff9d9607 in QWidgetPrivate::showChildren (this=<optimized out>, spontaneous=false) at kernel/qwidget.cpp:7850
#30 0x00007fdfff9d96fd in QWidgetPrivate::show_helper (this=<optimized out>) at kernel/qwidget.cpp:7489
#31 0x00007fdfff9d9607 in QWidgetPrivate::showChildren (this=<optimized out>, spontaneous=false) at kernel/qwidget.cpp:7850
#32 0x00007fdfff9d96fd in QWidgetPrivate::show_helper (this=<optimized out>) at kernel/qwidget.cpp:7489
#33 0x00007fdfff9d9607 in QWidgetPrivate::showChildren (this=<optimized out>, spontaneous=false) at kernel/qwidget.cpp:7850
#34 0x00007fdfff9d96fd in QWidgetPrivate::show_helper (this=<optimized out>) at kernel/qwidget.cpp:7489
#35 0x00007fdfff9d9b02 in QWidget::setVisible (this=0x3a87fc0, visible=<optimized out>) at kernel/qwidget.cpp:7764
#36 0x00007fdfff9bb389 in show (this=0x3a87fc0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:494
#37 QStackedLayout::setCurrentIndex (this=0x21cef00, index=3) at kernel/qstackedlayout.cpp:311
#38 0x00000000004259cf in ApplicationWindow::changeView (this=0x21b3bb0, index=...) at /build/buildd/muon-1.3.1/installer/ApplicationWindow.cpp:407
#39 0x00007fe000618281 in QMetaObject::activate (sender=0x21a9950, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb8351190) at kernel/qobject.cpp:3547
#40 0x00007fdfffeacb05 in QAbstractItemView::activated (this=<optimized out>, _t1=...) at .moc/release-shared/moc_qabstractitemview.cpp:362
#41 0x00007fdfffead00f in QAbstractItemView::mouseReleaseEvent (this=0x21a9950, event=0x7fffb8351f70) at itemviews/qabstractitemview.cpp:1821
#42 0x00007fdfff9d7144 in QWidget::event (this=0x21a9950, event=0x7fffb8351f70) at kernel/qwidget.cpp:8362
#43 0x00007fdfffd973b6 in QFrame::event (this=0x21a9950, e=0x7fffb8351f70) at widgets/qframe.cpp:557
#44 0x00007fdfffeab89b in QAbstractItemView::viewportEvent (this=0x21a9950, event=0x7fffb8351f70) at itemviews/qabstractitemview.cpp:1644
#45 0x00007fdfffef34b5 in QTreeView::viewportEvent (this=0x21a9950, event=0x7fffb8351f70) at itemviews/qtreeview.cpp:1257
#46 0x00007fe000604028 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x21b4630, event=0x7fffb8351f70) at kernel/qcoreapplication.cpp:986
#47 0x00007fdfff98685f in notify_helper (e=0x7fffb8351f70, receiver=0x21b4630, this=0x205fd50) at kernel/qapplication.cpp:4555
#48 QApplicationPrivate::notify_helper (this=0x205fd50, receiver=0x21b4630, e=0x7fffb8351f70) at kernel/qapplication.cpp:4531
#49 0x00007fdfff98c0bf in QApplication::notify (this=<optimized out>, receiver=0x21b4630, e=0x7fffb8351f70) at kernel/qapplication.cpp:4102
#50 0x00007fe00106a9e6 in KApplication::notify (this=0x7fffb8352c50, receiver=0x21b4630, event=0x7fffb8351f70) at ../../kdeui/kernel/kapplication.cpp:311
#51 0x00007fe000603e9c in QCoreApplication::notifyInternal (this=0x7fffb8352c50, receiver=0x21b4630, event=0x7fffb8351f70) at kernel/qcoreapplication.cpp:876
#52 0x00007fdfff987862 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#53 QApplicationPrivate::sendMouseEvent (receiver=0x21b4630, event=0x7fffb8351f70, alienWidget=0x21b4630, nativeWidget=0x21b3bb0, buttonDown=0x21b4630, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3170
#54 0x00007fdfffa06bf5 in QETWidget::translateMouseEvent (this=0x21b3bb0, event=<optimized out>) at kernel/qapplication_x11.cpp:4617
#55 0x00007fdfffa05bae in QApplication::x11ProcessEvent (this=0x7fffb8352c50, event=0x7fffb8352840) at kernel/qapplication_x11.cpp:3732
#56 0x00007fdfffa2f0d2 in x11EventSourceDispatch (s=0x205d0b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#57 0x00007fdff9f07d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007fdff9f080a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007fdff9f08164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007fe0006333bf in QEventDispatcherGlib::processEvents (this=0x2034080, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#61 0x00007fdfffa2ed5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#62 0x00007fe000602c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#63 0x00007fe000602ed7 in QEventLoop::exec (this=0x7fffb8352be0, flags=...) at kernel/qeventloop.cpp:204
#64 0x00007fe000607f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#65 0x000000000041dc97 in main (argc=5, argv=0x7fffb8352ec8) at /build/buildd/muon-1.3.1/installer/main.cpp:61

This bug may be a duplicate of or related to bug 283408.

Possible duplicates by query: bug 284579, bug 283408.

Reported using DrKonqi