Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
Without any reasons, plasma starts eating up lots of memory and eventually crashes at random times. Switching between applications might not even be the trigger, since this happened even whitout switching.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f745240b7a0 (LWP 1756))]

Thread 11 (Thread 0x7f7430a88700 (LWP 1757)):
#0  0x00007f7451cf0773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f744627af68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744627b429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744eee1f3e in QEventDispatcherGlib::processEvents (this=0x1fd2720, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f744eeb5cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f744eeb5ef7 in QEventLoop::exec (this=0x7f7430a87db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f744edcd27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f744ee98cbf in QInotifyFileSystemWatcherEngine::run (this=0x1fd8b00) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x1fd8b00) at thread/qthread_unix.cpp:331
#9  0x00007f7446d87efc in start_thread (arg=0x7f7430a88700) at pthread_create.c:304
#10 0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f7428438700 (LWP 1758)):
#0  0x00007f7446d8a034 in __pthread_mutex_lock (mutex=0x1c42ef8) at pthread_mutex_lock.c:61
#1  0x00007f744627af2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744627b429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744eee1f3e in QEventDispatcherGlib::processEvents (this=0x1c331c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f744eeb5cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f744eeb5ef7 in QEventLoop::exec (this=0x7f7428437db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f744edcd27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f744ee98cbf in QInotifyFileSystemWatcherEngine::run (this=0x1c46270) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x1c46270) at thread/qthread_unix.cpp:331
#9  0x00007f7446d87efc in start_thread (arg=0x7f7428438700) at pthread_create.c:304
#10 0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f7422675700 (LWP 4705)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x49f2f50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49f2f50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49f2f50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49f2f50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49f2f50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7422674e00, parent=0x207c610, th=0x49f2f50) at ../../../threadweaver/Weaver/Thread.cpp:87
#9  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x49f2f50) at ../../../threadweaver/Weaver/Thread.cpp:142
#10 0x00007f744edcfd05 in QThreadPrivate::start (arg=0x49f2f50) at thread/qthread_unix.cpp:331
#11 0x00007f7446d87efc in start_thread (arg=0x7f7422675700) at pthread_create.c:304
#12 0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f7422e76700 (LWP 4706)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x7f741401abb0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x7f741401abb0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7422e75e00, parent=0x207c610, th=0x7f741401abb0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x7f741401abb0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x7f741401abb0) at thread/qthread_unix.cpp:331
#8  0x00007f7446d87efc in start_thread (arg=0x7f7422e76700) at pthread_create.c:304
#9  0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f741bfff700 (LWP 4707)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x2852150) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x2852150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x2852150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x2852150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f741bffee00, parent=0x207c610, th=0x2852150) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x2852150) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x2852150) at thread/qthread_unix.cpp:331
#10 0x00007f7446d87efc in start_thread (arg=0x7f741bfff700) at pthread_create.c:304
#11 0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f741b7fe700 (LWP 4708)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x50f0de0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x50f0de0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f741b7fde00, parent=0x207c610, th=0x50f0de0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x50f0de0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x50f0de0) at thread/qthread_unix.cpp:331
#8  0x00007f7446d87efc in start_thread (arg=0x7f741b7fe700) at pthread_create.c:304
#9  0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f741affd700 (LWP 4709)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x49c12e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49c12e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcce24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x49c12e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f741affce00, parent=0x207c610, th=0x49c12e0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x49c12e0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x49c12e0) at thread/qthread_unix.cpp:331
#9  0x00007f7446d87efc in start_thread (arg=0x7f741affd700) at pthread_create.c:304
#10 0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f7423677700 (LWP 5899)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x461b020) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x461b020) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7423676e00, parent=0x207c610, th=0x461b020) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x461b020) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x461b020) at thread/qthread_unix.cpp:331
#8  0x00007f7446d87efc in start_thread (arg=0x7f7423677700) at pthread_create.c:304
#9  0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f74129d6700 (LWP 5900)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x3840160) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x3840160) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f74129d5e00, parent=0x207c610, th=0x3840160) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x3840160) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x3840160) at thread/qthread_unix.cpp:331
#8  0x00007f7446d87efc in start_thread (arg=0x7f74129d6700) at pthread_create.c:304
#9  0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7423e78700 (LWP 5901)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f744edd01ab in wait (time=18446744073709551615, this=0x1ff0cb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1fee000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f744abca864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x207c610, th=0x7f7414698c80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f744abcce0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1fe1df0, th=0x7f7414698c80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f744abcbccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7423e77e00, parent=0x207c610, th=0x7f7414698c80) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f744abcbd5b in ThreadWeaver::Thread::run (this=0x7f7414698c80) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f744edcfd05 in QThreadPrivate::start (arg=0x7f7414698c80) at thread/qthread_unix.cpp:331
#8  0x00007f7446d87efc in start_thread (arg=0x7f7423e78700) at pthread_create.c:304
#9  0x00007f7451cfc89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f745240b7a0 (LWP 1756)):
[KCrash Handler]
#6  isNull (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x46d7cd0) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f7437c49112 in WindowTaskItem::publishIconGeometry (this=0x4704630) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f7437c57b7c in AbstractTaskItem::timerEvent (this=0x4704630, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f744eecd789 in QObject::event (this=0x4704630, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f744e88589b in QGraphicsWidget::event (this=0x4704630, event=0x7fff8669b8e0) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f744e267424 in notify_helper (e=0x7fff8669b8e0, receiver=0x4704630, this=0x17d57f0) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x17d57f0, receiver=0x4704630, e=0x7fff8669b8e0) at kernel/qapplication.cpp:4458
#15 0x00007f744e26c291 in QApplication::notify (this=0x17b5e40, receiver=0x4704630, e=0x7fff8669b8e0) at kernel/qapplication.cpp:4365
#16 0x00007f744fb65126 in KApplication::notify (this=0x17b5e40, receiver=0x4704630, event=0x7fff8669b8e0) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f744eeb6afc in QCoreApplication::notifyInternal (this=0x17b5e40, receiver=0x4704630, event=0x7fff8669b8e0) at kernel/qcoreapplication.cpp:787
#18 0x00007f744eee3d62 in sendEvent (event=0x7fff8669b8e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x17d9290) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f744eee1538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f744627aa5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f744627b258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f744627b429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f744eee1ed6 in QEventDispatcherGlib::processEvents (this=0x1755f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f744e30f07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f744eeb5cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f744eeb5ef7 in QEventLoop::exec (this=0x7fff8669bb70, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f744eeba789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f7451ffb1a3 in kdemain (argc=1, argv=0x7fff8669bf58) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f7451c3c30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff8669bf58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8669bf48) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 290152, bug 290148, bug 290147, bug 290129, bug 290106.

Reported using DrKonqi