Bug 287277

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Plasma crashed while switching windows. FIrefox and Akregator was running.
- Unusual behavior:
1/ After resume from crash is system tray plasmoid on the taskbar 2-times enlarged.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7851b20 (LWP 2638))]

Thread 7 (Thread 0xb1729b70 (LWP 2639)):
#0  0x05d828b0 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x05d83637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x05d83c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01bddb37 in QEventDispatcherGlib::processEvents (this=0x897ca00, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x01bae1dd in QEventLoop::processEvents (this=0xb17292a0, flags=...) at kernel/qeventloop.cpp:149
#5  0x01bae421 in QEventLoop::exec (this=0xb17292a0, flags=...) at kernel/qeventloop.cpp:201
#6  0x01ab190b in QThread::exec (this=0x89793a0) at thread/qthread.cpp:498
#7  0x01b8ee2d in QInotifyFileSystemWatcherEngine::run (this=0x89793a0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x01ab47b3 in QThreadPrivate::start (arg=0x89793a0) at thread/qthread_unix.cpp:331
#9  0x021a9d31 in start_thread (arg=0xb1729b70) at pthread_create.c:304
#10 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xaff42b70 (LWP 2684)):
#0  0x01781d10 in __GI_clock_gettime (clock_id=1, tp=0xaff42018) at ../sysdeps/unix/clock_gettime.c:116
#1  0x01b0b7d5 in do_gettime (frac=0xaff42010, sec=0xaff42008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x01bde4b6 in QTimerInfoList::updateCurrentTime (this=0x8aba334) at kernel/qeventdispatcher_unix.cpp:339
#4  0x01bde80a in QTimerInfoList::timerWait (this=0x8aba334, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x01bdd053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xaff4211c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x01bdd0ed in timerSourcePrepare (source=0x8aba300, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x05d8288c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x05d83637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x05d83c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x01bddb37 in QEventDispatcherGlib::processEvents (this=0x8ab9e80, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x01bae1dd in QEventLoop::processEvents (this=0xaff422a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x01bae421 in QEventLoop::exec (this=0xaff422a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x01ab190b in QThread::exec (this=0x81be9c8) at thread/qthread.cpp:498
#14 0x01b8ee2d in QInotifyFileSystemWatcherEngine::run (this=0x81be9c8) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x01ab47b3 in QThreadPrivate::start (arg=0x81be9c8) at thread/qthread_unix.cpp:331
#16 0x021a9d31 in start_thread (arg=0xaff42b70) at pthread_create.c:304
#17 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xaca31b70 (LWP 2860)):
#0  0x00ef7416 in __kernel_vsyscall ()
#1  0x021ada5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00710cfc in __pthread_cond_wait (cond=0x89dc9c0, mutex=0x89dc9a8) at forward.c:139
#3  0x01ab4cc0 in wait (time=4294967295, this=0x89dc9a8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89dc848, mutex=0x89a6460, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00a58406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89dc830, th=0x8e774e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00a5aecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89b4218, th=0x8e774e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00a5803a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89dc830, th=0x8e774e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00a5afcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89b4218, th=0x8e774e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00a57f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89dc830, th=0x8e774e0, previous=0x89a1a88) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00a59b14 in ThreadWeaver::ThreadRunHelper::run (this=0xaca31304, parent=0x89dc830, th=0x8e774e0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00a59bca in ThreadWeaver::Thread::run (this=0x8e774e0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01ab47b3 in QThreadPrivate::start (arg=0x8e774e0) at thread/qthread_unix.cpp:331
#13 0x021a9d31 in start_thread (arg=0xaca31b70) at pthread_create.c:304
#14 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xac230b70 (LWP 2861)):
#0  0x00ef7416 in __kernel_vsyscall ()
#1  0x021ada5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00710cfc in __pthread_cond_wait (cond=0x89dc9c0, mutex=0x89dc9a8) at forward.c:139
#3  0x01ab4cc0 in wait (time=4294967295, this=0x89dc9a8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89dc848, mutex=0x89a6460, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00a58406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89dc830, th=0x899c4e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00a5aecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89b4218, th=0x899c4e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00a5803a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89dc830, th=0x899c4e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00a5afcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89b4218, th=0x899c4e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00a57f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89dc830, th=0x899c4e0, previous=0x8e662c8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00a59b14 in ThreadWeaver::ThreadRunHelper::run (this=0xac230304, parent=0x89dc830, th=0x899c4e0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00a59bca in ThreadWeaver::Thread::run (this=0x899c4e0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01ab47b3 in QThreadPrivate::start (arg=0x899c4e0) at thread/qthread_unix.cpp:331
#13 0x021a9d31 in start_thread (arg=0xac230b70) at pthread_create.c:304
#14 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xaba2fb70 (LWP 2862)):
#0  0x00ef7416 in __kernel_vsyscall ()
#1  0x021ada5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00710cfc in __pthread_cond_wait (cond=0x89dc9c0, mutex=0x89dc9a8) at forward.c:139
#3  0x01ab4cc0 in wait (time=4294967295, this=0x89dc9a8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89dc848, mutex=0x89a6460, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00a58406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89dc830, th=0x8ce5ce0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00a5aecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89b4218, th=0x8ce5ce0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00a5803a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89dc830, th=0x8ce5ce0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00a5afcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89b4218, th=0x8ce5ce0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00a57f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89dc830, th=0x8ce5ce0, previous=0x8e66458) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00a59b14 in ThreadWeaver::ThreadRunHelper::run (this=0xaba2f304, parent=0x89dc830, th=0x8ce5ce0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00a59bca in ThreadWeaver::Thread::run (this=0x8ce5ce0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01ab47b3 in QThreadPrivate::start (arg=0x8ce5ce0) at thread/qthread_unix.cpp:331
#13 0x021a9d31 in start_thread (arg=0xaba2fb70) at pthread_create.c:304
#14 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xab22eb70 (LWP 2863)):
#0  0x00ef7416 in __kernel_vsyscall ()
#1  0x021ada5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00710cfc in __pthread_cond_wait (cond=0x89dc9c0, mutex=0x89dc9a8) at forward.c:139
#3  0x01ab4cc0 in wait (time=4294967295, this=0x89dc9a8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89dc848, mutex=0x89a6460, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00a58406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89dc830, th=0x86ff688) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00a5aecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89b4218, th=0x86ff688) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00a5803a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89dc830, th=0x86ff688) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00a5afcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89b4218, th=0x86ff688) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00a57f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89dc830, th=0x86ff688, previous=0x88d5a70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00a59b14 in ThreadWeaver::ThreadRunHelper::run (this=0xab22e304, parent=0x89dc830, th=0x86ff688) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00a59bca in ThreadWeaver::Thread::run (this=0x86ff688) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01ab47b3 in QThreadPrivate::start (arg=0x86ff688) at thread/qthread_unix.cpp:331
#13 0x021a9d31 in start_thread (arg=0xab22eb70) at pthread_create.c:304
#14 0x007030ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb7851b20 (LWP 2638)):
[KCrash Handler]
#7  isNull (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0x8fad020) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x05b6e590 in WindowTaskItem::publishIconGeometry (this=0x8f0a708, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#11 0x05b80b24 in TaskGroupItem::publishIconGeometry (this=0x9007900, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1438
#12 0x05b80801 in publishIconGeometry (this=0x9007900) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#13 TaskGroupItem::publishIconGeometry (this=0x9007900) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#14 0x05b7f688 in AbstractTaskItem::timerEvent (this=0x9007900, event=0xbfde369c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#15 0x01bc7994 in QObject::event (this=0x9007900, e=0xbfde369c) at kernel/qobject.cpp:1181
#16 0x02e76bd4 in QGraphicsWidget::event (this=0x9007900, event=0xbfde369c) at graphicsview/qgraphicswidget.cpp:1455
#17 0x027b7d54 in notify_helper (e=0xbfde369c, receiver=0x9007900, this=0x80a3658) at kernel/qapplication.cpp:4486
#18 QApplicationPrivate::notify_helper (this=0x80a3658, receiver=0x9007900, e=0xbfde369c) at kernel/qapplication.cpp:4458
#19 0x027bd103 in QApplication::notify (this=0xbfde369c, receiver=0x9007900, e=0xbfde369c) at kernel/qapplication.cpp:3886
#20 0x010df681 in KApplication::notify (this=0x80849e0, receiver=0x9007900, event=0xbfde369c) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x01baf19e in QCoreApplication::notifyInternal (this=0x80849e0, receiver=0x9007900, event=0xbfde369c) at kernel/qcoreapplication.cpp:787
#22 0x01bdfc10 in sendEvent (event=0xbfde369c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#23 QTimerInfoList::activateTimers (this=0x80a187c) at kernel/qeventdispatcher_unix.cpp:603
#24 0x01bdd122 in timerSourceDispatch (source=0x80a1848) at kernel/qeventdispatcher_glib.cpp:184
#25 0x05d8325f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x05d83990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0x05d83c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0x01bddada in QEventDispatcherGlib::processEvents (this=0x804d218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#29 0x0286fe3a in QGuiEventDispatcherGlib::processEvents (this=0x804d218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x01bae1dd in QEventLoop::processEvents (this=0xbfde3914, flags=...) at kernel/qeventloop.cpp:149
#31 0x01bae421 in QEventLoop::exec (this=0xbfde3914, flags=...) at kernel/qeventloop.cpp:201
#32 0x01bb319d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#33 0x027b58f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#34 0x0014518b in kdemain (argc=1, argv=0xbfde3b14) at ../../../../plasma/desktop/shell/main.cpp:120
#35 0x0804850b in main (argc=1, argv=0xbfde3b14) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 287181, bug 287120, bug 287064, bug 287059, bug 287014.

Reported using DrKonqi