Bug 284566

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed: I was surfing the internetz, using Midori as browser.

- Unusual behavior I noticed: The screen displayed a mashed up , scrambled desktop, after which the screen went black with only the Crash Report Assistant window opened. Within a second, the normal desktop appeared and surfing was still possible- as if nothing had happened.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7ff29a9af7a0 (LWP 1694))]

Thread 3 (Thread 0x7ff27fe67700 (LWP 1696)):
#0  0x00007ff28f332034 in __pthread_mutex_lock (mutex=0x1f6bea8) at pthread_mutex_lock.c:61
#1  0x00007ff28e822023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff28e822dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff28e823429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff297489f3e in QEventDispatcherGlib::processEvents (this=0x1f6b710, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007ff29745dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ff29745def7 in QEventLoop::exec (this=0x7ff27fe66db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007ff29737527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007ff297440cbf in QInotifyFileSystemWatcherEngine::run (this=0x1f6a0f0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007ff297377d05 in QThreadPrivate::start (arg=0x1f6a0f0) at thread/qthread_unix.cpp:331
#10 0x00007ff28f32fefc in start_thread (arg=0x7ff27fe67700) at pthread_create.c:304
#11 0x00007ff29a2a189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff27d386700 (LWP 1697)):
#0  0x00007ff28e8233f1 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff297489f3e in QEventDispatcherGlib::processEvents (this=0x2153cf0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#2  0x00007ff29745dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#3  0x00007ff29745def7 in QEventLoop::exec (this=0x7ff27d385db0, flags=...) at kernel/qeventloop.cpp:201
#4  0x00007ff29737527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#5  0x00007ff297440cbf in QInotifyFileSystemWatcherEngine::run (this=0x21530f0) at io/qfilesystemwatcher_inotify.cpp:248
#6  0x00007ff297377d05 in QThreadPrivate::start (arg=0x21530f0) at thread/qthread_unix.cpp:331
#7  0x00007ff28f32fefc in start_thread (arg=0x7ff27d386700) at pthread_create.c:304
#8  0x00007ff29a2a189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff29a9af7a0 (LWP 1694)):
[KCrash Handler]
#6  data (this=0x100000007) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#7  qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:2343
#8  d_func (this=0xffffffff) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:125
#9  QObjectPrivate::setParent_helper (this=<optimized out>, o=0x0) at kernel/qobject.cpp:1968
#10 0x00007ff297476379 in QObject::~QObject (this=0x2d83950, __in_chrg=<optimized out>) at kernel/qobject.cpp:954
#11 0x00007ff296c8ac43 in ~QAbstractScrollAreaFilter (this=0x2d83950, __in_chrg=<optimized out>) at widgets/qabstractscrollarea_p.h:109
#12 QAbstractScrollAreaFilter::~QAbstractScrollAreaFilter (this=0x2d83950, __in_chrg=<optimized out>) at widgets/qabstractscrollarea_p.h:109
#13 0x00007ff296c888c1 in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#14 reset (other=0x0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:149
#15 QAbstractScrollArea::~QAbstractScrollArea (this=<optimized out>, __in_chrg=<optimized out>) at widgets/qabstractscrollarea.cpp:525
#16 0x00007ff2981effc9 in KTextBrowser::~KTextBrowser (this=0x3354400, __in_chrg=<optimized out>) at ../../kdeui/widgets/ktextbrowser.cpp:60
#17 0x00007ff296df1f44 in QGraphicsProxyWidget::~QGraphicsProxyWidget (this=<optimized out>, __in_chrg=<optimized out>) at graphicsview/qgraphicsproxywidget.cpp:554
#18 0x00007ff299eb7419 in Plasma::TextBrowser::~TextBrowser (this=0x1f60b10, __in_chrg=<optimized out>) at ../../plasma/widgets/textbrowser.cpp:103
#19 0x00007ff296de1dc6 in QGraphicsItem::~QGraphicsItem (this=0x31cdd90, __in_chrg=<optimized out>) at graphicsview/qgraphicsitem.cpp:1488
#20 0x00007ff296e31540 in ~QGraphicsObject (this=0x31cdd80, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#21 QGraphicsWidget::~QGraphicsWidget (this=0x31cdd80, __in_chrg=<optimized out>) at graphicsview/qgraphicswidget.cpp:232
#22 0x00007ff296e316c9 in QGraphicsWidget::~QGraphicsWidget (this=0x31cdd80, __in_chrg=<optimized out>) at graphicsview/qgraphicswidget.cpp:277
#23 0x00007ff296de1dc6 in QGraphicsItem::~QGraphicsItem (this=0x1ef7670, __in_chrg=<optimized out>) at graphicsview/qgraphicsitem.cpp:1488
#24 0x00007ff296e31540 in ~QGraphicsObject (this=0x1ef7660, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#25 QGraphicsWidget::~QGraphicsWidget (this=0x1ef7660, __in_chrg=<optimized out>) at graphicsview/qgraphicswidget.cpp:232
#26 0x00007ff26ff05859 in ?? () from /usr/lib/kde4/plasma_applet_notifications.so
#27 0x00007ff297475a88 in QObject::event (this=0x1ef7660, e=<optimized out>) at kernel/qobject.cpp:1200
#28 0x00007ff296e2d89b in QGraphicsWidget::event (this=0x1ef7660, event=0x22bb7c0) at graphicsview/qgraphicswidget.cpp:1455
#29 0x00007ff29680f424 in notify_helper (e=0x22bb7c0, receiver=0x1ef7660, this=0x1874050) at kernel/qapplication.cpp:4486
#30 QApplicationPrivate::notify_helper (this=0x1874050, receiver=0x1ef7660, e=0x22bb7c0) at kernel/qapplication.cpp:4458
#31 0x00007ff296814291 in QApplication::notify (this=0x186ace0, receiver=0x1ef7660, e=0x22bb7c0) at kernel/qapplication.cpp:4365
#32 0x00007ff29810d1e6 in KApplication::notify (this=0x186ace0, receiver=0x1ef7660, event=0x22bb7c0) at ../../kdeui/kernel/kapplication.cpp:311
#33 0x00007ff29745eafc in QCoreApplication::notifyInternal (this=0x186ace0, receiver=0x1ef7660, event=0x22bb7c0) at kernel/qcoreapplication.cpp:787
#34 0x00007ff29746251f in sendEvent (event=0x22bb7c0, receiver=0x1ef7660) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#35 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x17fb430) at kernel/qcoreapplication.cpp:1428
#36 0x00007ff297489a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#37 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#38 0x00007ff28e822a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007ff28e823258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007ff28e823429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ff297489ed6 in QEventDispatcherGlib::processEvents (this=0x17fcf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#42 0x00007ff2968b707e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#43 0x00007ff29745dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#44 0x00007ff29745def7 in QEventLoop::exec (this=0x7fffea446d80, flags=...) at kernel/qeventloop.cpp:201
#45 0x00007ff297462789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#46 0x00007ff29a5a01a3 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#47 0x00007ff29a1e130d in __libc_start_main (main=0x400640, argc=1, ubp_av=0x7fffea447168, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffea447158) at libc-start.c:226
#48 0x0000000000400671 in _start ()

Possible duplicates by query: bug 267730.

Reported using DrKonqi