Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I was adding the System Tray widget to the "desktop" and that caused the Plasma Workspace to crash.  I can repeat this every time.  I see other bugs of adding the System Tray widget to the panel (or a panel), but none specifically for this.  Not sure if it's the same thing or not.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f27b38277c0 (LWP 28797))]

Thread 9 (Thread 0x7f278efa7700 (LWP 28798)):
#0  0x00007f27a7687089 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f27a7687dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f27a7688429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f27b02eef3e in QEventDispatcherGlib::processEvents (this=0x1a95bc0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f27b02c2cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f27b02c2ef7 in QEventLoop::exec (this=0x7f278efa6cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f27b01da27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f27b02a5cbf in QInotifyFileSystemWatcherEngine::run (this=0x1a93170) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x1a93170) at thread/qthread_unix.cpp:331
#9  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f27a8194efc in start_thread (arg=0x7f278efa7700) at pthread_create.c:304
#11 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f2787fff700 (LWP 28799)):
#0  0x00007f27a81981fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x1ef7328) at pthread_mutex_unlock.c:290
#2  0x00007f27a7686f3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f27a7687dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f27a7688429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f27b02eef3e in QEventDispatcherGlib::processEvents (this=0x1ef7410, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f27b02c2cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f27b02c2ef7 in QEventLoop::exec (this=0x7f2787ffecd0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f27b01da27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f27b02a5cbf in QInotifyFileSystemWatcherEngine::run (this=0x1ef6650) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x1ef6650) at thread/qthread_unix.cpp:331
#11 0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x00007f27a8194efc in start_thread (arg=0x7f2787fff700) at pthread_create.c:304
#13 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f2782b8b700 (LWP 28807)):
#0  0x00007f27b30fc773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f27a7687f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f27a7688792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2783669516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f27a76ad2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f27a8194efc in start_thread (arg=0x7f2782b8b700) at pthread_create.c:304
#7  0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f278198c700 (LWP 29467)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f27b01dd1ab in wait (time=18446744073709551615, this=0x1b0f970) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ad45e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f27abfd7864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b83100, th=0x23eb790) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f27abfd9e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1b09540, th=0x23eb790) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f27abfd8ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f278198bd20, parent=0x1b83100, th=0x23eb790) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f27abfd8d5b in ThreadWeaver::Thread::run (this=0x23eb790) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x23eb790) at thread/qthread_unix.cpp:331
#8  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f27a8194efc in start_thread (arg=0x7f278198c700) at pthread_create.c:304
#10 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f27800bf700 (LWP 29468)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f27b01dd1ab in wait (time=18446744073709551615, this=0x1b0f970) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ad45e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f27abfd7864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b83100, th=0x38b5bd0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f27abfd9e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1b09540, th=0x38b5bd0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f27abfd8ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f27800bed20, parent=0x1b83100, th=0x38b5bd0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f27abfd8d5b in ThreadWeaver::Thread::run (this=0x38b5bd0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x38b5bd0) at thread/qthread_unix.cpp:331
#8  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f27a8194efc in start_thread (arg=0x7f27800bf700) at pthread_create.c:304
#10 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f27853bb700 (LWP 29469)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f27b01dd1ab in wait (time=18446744073709551615, this=0x1b0f970) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ad45e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f27abfd7864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b83100, th=0x24497b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f27abfd9e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1b09540, th=0x24497b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f27abfd8ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f27853bad20, parent=0x1b83100, th=0x24497b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f27abfd8d5b in ThreadWeaver::Thread::run (this=0x24497b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x24497b0) at thread/qthread_unix.cpp:331
#8  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f27a8194efc in start_thread (arg=0x7f27853bb700) at pthread_create.c:304
#10 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f278338c700 (LWP 29470)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f27b01dd1ab in wait (time=18446744073709551615, this=0x1b0f970) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ad45e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f27abfd7864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b83100, th=0x7f2778000b00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f27abfd9e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1b09540, th=0x7f2778000b00) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f27abfd8ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f278338bd20, parent=0x1b83100, th=0x7f2778000b00) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f27abfd8d5b in ThreadWeaver::Thread::run (this=0x7f2778000b00) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x7f2778000b00) at thread/qthread_unix.cpp:331
#8  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f27a8194efc in start_thread (arg=0x7f278338c700) at pthread_create.c:304
#10 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f277d7c0700 (LWP 29471)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f27b01dd1ab in wait (time=18446744073709551615, this=0x1b0f970) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ad45e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f27abfd7864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b83100, th=0x7f2778001680) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f27abfd9e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1b09540, th=0x7f2778001680) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f27abfd8ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f277d7bfd20, parent=0x1b83100, th=0x7f2778001680) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f27abfd8d5b in ThreadWeaver::Thread::run (this=0x7f2778001680) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f27b01dcd05 in QThreadPrivate::start (arg=0x7f2778001680) at thread/qthread_unix.cpp:331
#8  0x00007f27a49a156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f27a8194efc in start_thread (arg=0x7f277d7c0700) at pthread_create.c:304
#10 0x00007f27b310889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f27b38277c0 (LWP 28797)):
[KCrash Handler]
#6  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x740065006e002e) at graphicsview/qgraphicslayoutitem.cpp:280
#7  0x00007f27afc9b591 in QGridLayoutItem::hasDynamicConstraint (this=<optimized out>) at graphicsview/qgridlayoutengine.cpp:576
#8  0x00007f27afc9c6b2 in ensureDynamicConstraint (this=0x20136d0) at graphicsview/qgridlayoutengine.cpp:1657
#9  QGridLayoutEngine::ensureDynamicConstraint (this=0x20136d0) at graphicsview/qgridlayoutengine.cpp:1652
#10 0x00007f27afc9c769 in QGridLayoutEngine::hasDynamicConstraint (this=0x20136d0) at graphicsview/qgridlayoutengine.cpp:1677
#11 0x00007f27afca0a98 in QGridLayoutEngine::sizeHint (this=0x20136d0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#12 0x00007f27afc2a01a in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#13 0x00007f27afc54bd9 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x20135c0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00007f27afc55491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#15 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#16 0x00007f27afc92231 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00007f27afc54caf in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x4105bb0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00007f27afc55491 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#19 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#20 0x00007f2797db5905 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x3ba6e70) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#21 0x00007f2797db75d9 in SystemTray::TaskArea::addWidgetForTask (this=0x3ba6e70, task=0x43617b0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#22 0x00007f2797db7926 in SystemTray::TaskArea::addTask (this=0x3ba6e70, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#23 0x00007f2797db8124 in SystemTray::TaskArea::qt_metacall (this=0x3ba6e70, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffb86b9e90) at ./taskarea.moc:89
#24 0x00007f27b02d6eba in QMetaObject::activate (sender=0x11520d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb86b9e90) at kernel/qobject.cpp:3278
#25 0x00007f2797d9a87f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x43617b0) at ./manager.moc:99
#26 0x00007f2797d9aa95 in SystemTray::Manager::addTask (this=0x11520d0, task=0x43617b0) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#27 0x00007f2797d9abe4 in SystemTray::Manager::qt_metacall (this=0x11520d0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffb86ba000) at ./manager.moc:86
#28 0x00007f27b02d6eba in QMetaObject::activate (sender=0x1151d10, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb86ba000) at kernel/qobject.cpp:3278
#29 0x00007f2797d9b08f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x43617b0) at ./protocol.moc:91
#30 0x00007f2797da2178 in SystemTray::PlasmoidProtocol::addApplet (this=0x1151d10, appletName=..., id=<optimized out>, parent=0x3f71360) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#31 0x00007f2797d9a6d6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#32 0x00007f2797dac962 in SystemTray::Applet::checkDefaultApplets (this=0x3f71360) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:750
#33 0x00007f2797dada4c in SystemTray::Applet::qt_metacall (this=0x3f71360, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x39fa5c0) at ./applet.moc:91
#34 0x00007f27b02daa5e in QObject::event (this=0x3f71360, e=<optimized out>) at kernel/qobject.cpp:1217
#35 0x00007f27afc9289b in QGraphicsWidget::event (this=0x3f71360, event=0x3c92940) at graphicsview/qgraphicswidget.cpp:1455
#36 0x00007f27af674424 in notify_helper (e=0x3c92940, receiver=0x3f71360, this=0xf02850) at kernel/qapplication.cpp:4486
#37 QApplicationPrivate::notify_helper (this=0xf02850, receiver=0x3f71360, e=0x3c92940) at kernel/qapplication.cpp:4458
#38 0x00007f27af679291 in QApplication::notify (this=0xee45f0, receiver=0x3f71360, e=0x3c92940) at kernel/qapplication.cpp:4365
#39 0x00007f27b0f72126 in KApplication::notify (this=0xee45f0, receiver=0x3f71360, event=0x3c92940) at ../../kdeui/kernel/kapplication.cpp:311
#40 0x00007f27b02c3afc in QCoreApplication::notifyInternal (this=0xee45f0, receiver=0x3f71360, event=0x3c92940) at kernel/qcoreapplication.cpp:787
#41 0x00007f27b02c751f in sendEvent (event=0x3c92940, receiver=0x3f71360) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xe46430) at kernel/qcoreapplication.cpp:1428
#43 0x00007f27b02eea73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#44 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#45 0x00007f27a7687a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f27a7688258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f27a7688429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f27b02eeed6 in QEventDispatcherGlib::processEvents (this=0xe47f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#49 0x00007f27af71c07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007f27b02c2cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007f27b02c2ef7 in QEventLoop::exec (this=0x7fffb86baa60, flags=...) at kernel/qeventloop.cpp:201
#52 0x00007f27b02c7789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#53 0x00007f27b34071a3 in kdemain (argc=1, argv=0x7fffb86bae48) at ../../../../plasma/desktop/shell/main.cpp:120
#54 0x00007f27b304830d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffb86bae48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb86bae38) at libc-start.c:226
#55 0x0000000000400671 in _start ()

Possible duplicates by query: bug 288371, bug 288236, bug 288137, bug 288003, bug 287909.

Reported using DrKonqi