Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.2 (4.8.2) (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- Unusual behavior I noticed: Everytime when i try to use cairo dock plasma crashes, and now its more usual, and im getting problems with the panel and the notifications

The crash can be reproduced every time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1efed6e780 (LWP 1890))]

Thread 8 (Thread 0x7f1ede711700 (LWP 1891)):
#0  0x00007f1ef3102f69 in __pthread_mutex_lock (mutex=0x7f1ed8000a60) at pthread_mutex_lock.c:92
#1  0x00007f1ef2837561 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1ef27fb729 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1ef27fbf1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1ef27fc124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1efb81c426 in QEventDispatcherGlib::processEvents (this=0x7f1ed80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f1efb7ebc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f1efb7ebed7 in QEventLoop::exec (this=0x7f1ede710dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f1efb6eafa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f1efb7cb9ff in QInotifyFileSystemWatcherEngine::run (this=0x1081be0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x1081be0) at thread/qthread_unix.cpp:298
#11 0x00007f1ef3100e9a in start_thread (arg=0x7f1ede711700) at pthread_create.c:308
#12 0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f1ed39cb700 (LWP 1893)):
#0  0x00007f1efe63eb03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f1ef27fbff6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1ef27fc124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1efb81c426 in QEventDispatcherGlib::processEvents (this=0x7f1ecc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1efb7ebc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1efb7ebed7 in QEventLoop::exec (this=0x7f1ed39cadd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1efb6eafa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f1efb7cb9ff in QInotifyFileSystemWatcherEngine::run (this=0x1f47a40) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x1f47a40) at thread/qthread_unix.cpp:298
#9  0x00007f1ef3100e9a in start_thread (arg=0x7f1ed39cb700) at pthread_create.c:308
#10 0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f1ed0a91700 (LWP 1896)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1ef85d0222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f1ef85d0259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f1ef3100e9a in start_thread (arg=0x7f1ed0a91700) at pthread_create.c:308
#4  0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f1ec3fff700 (LWP 2233)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1efb6ee4db in wait (time=18446744073709551615, this=0x10d4300) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x10bdaf0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1ef72990eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a9d40, th=0x1653b10) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1ef729b9db in ThreadWeaver::WorkingHardState::applyForWork (this=0x1072f20, th=0x1653b10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1ef729a84f in ThreadWeaver::ThreadRunHelper::run (this=0x7f1ec3ffee20, parent=0x11a9d40, th=0x1653b10) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f1ef729a8db in ThreadWeaver::Thread::run (this=0x1653b10) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x1653b10) at thread/qthread_unix.cpp:298
#8  0x00007f1ef3100e9a in start_thread (arg=0x7f1ec3fff700) at pthread_create.c:308
#9  0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f1ec25ec700 (LWP 2234)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1efb6ee4db in wait (time=18446744073709551615, this=0x10d4300) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x10bdaf0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1ef72990eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a9d40, th=0x313fdb0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1ef729b9db in ThreadWeaver::WorkingHardState::applyForWork (this=0x1072f20, th=0x313fdb0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1ef729a84f in ThreadWeaver::ThreadRunHelper::run (this=0x7f1ec25ebe20, parent=0x11a9d40, th=0x313fdb0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f1ef729a8db in ThreadWeaver::Thread::run (this=0x313fdb0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x313fdb0) at thread/qthread_unix.cpp:298
#8  0x00007f1ef3100e9a in start_thread (arg=0x7f1ec25ec700) at pthread_create.c:308
#9  0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1ec2dee700 (LWP 2235)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1efb6ee4db in wait (time=18446744073709551615, this=0x10d4300) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x10bdaf0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1ef72990eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a9d40, th=0x25ab3f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1ef729b9db in ThreadWeaver::WorkingHardState::applyForWork (this=0x1072f20, th=0x25ab3f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1ef729b9f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1072f20, th=0x25ab3f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f1ef729a84f in ThreadWeaver::ThreadRunHelper::run (this=0x7f1ec2dede20, parent=0x11a9d40, th=0x25ab3f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f1ef729a8db in ThreadWeaver::Thread::run (this=0x25ab3f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x25ab3f0) at thread/qthread_unix.cpp:298
#9  0x00007f1ef3100e9a in start_thread (arg=0x7f1ec2dee700) at pthread_create.c:308
#10 0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1ec1deb700 (LWP 2236)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1efb6ee4db in wait (time=18446744073709551615, this=0x10d4300) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x10bdaf0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1ef72990eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a9d40, th=0x25cf150) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1ef729b9db in ThreadWeaver::WorkingHardState::applyForWork (this=0x1072f20, th=0x25cf150) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1ef729a84f in ThreadWeaver::ThreadRunHelper::run (this=0x7f1ec1deae20, parent=0x11a9d40, th=0x25cf150) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f1ef729a8db in ThreadWeaver::Thread::run (this=0x25cf150) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f1efb6edfcb in QThreadPrivate::start (arg=0x25cf150) at thread/qthread_unix.cpp:298
#8  0x00007f1ef3100e9a in start_thread (arg=0x7f1ec1deb700) at pthread_create.c:308
#9  0x00007f1efe64a4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1efed6e780 (LWP 1890)):
[KCrash Handler]
#6  0x0000000000000074 in ?? ()
#7  0x00007f1efb802a78 in QObject::connect (sender=0x2011590, signal=0x7f1ed7bde478 "2destroyed()", receiver=0x3fc86b0, method=0x7f1ed7bde467 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f1ed7bbfe68 in SystemTray::Task::widget (this=0x3fc86b0, host=0x12bd280, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f1ed7bdac66 in SystemTray::TaskArea::addWidgetForTask (this=0x3d98ae0, task=0x3fc86b0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#10 0x00007f1ed7bdb326 in SystemTray::TaskArea::addTask (this=0x3d98ae0, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#11 0x00007f1efb801281 in QMetaObject::activate (sender=0x2705780, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3ae09ca0) at kernel/qobject.cpp:3547
#12 0x00007f1ed7bbe9b2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x3fc86b0) at ./manager.moc:120
#13 0x00007f1efb801281 in QMetaObject::activate (sender=0x3fc86b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3ae09df0) at kernel/qobject.cpp:3547
#14 0x00007f1ed7bbf8af in SystemTray::Task::changed (this=<optimized out>, _t1=0x3fc86b0) at ./task.moc:128
#15 0x00007f1efb806446 in QObject::event (this=0x3fc86b0, e=<optimized out>) at kernel/qobject.cpp:1195
#16 0x00007f1efab6f894 in notify_helper (e=0x13285e0, receiver=0x3fc86b0, this=0xaee7b0) at kernel/qapplication.cpp:4559
#17 QApplicationPrivate::notify_helper (this=0xaee7b0, receiver=0x3fc86b0, e=0x13285e0) at kernel/qapplication.cpp:4531
#18 0x00007f1efab74713 in QApplication::notify (this=0xad0000, receiver=0x3fc86b0, e=0x13285e0) at kernel/qapplication.cpp:4420
#19 0x00007f1efc4c9b46 in KApplication::notify (this=0xad0000, receiver=0x3fc86b0, event=0x13285e0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f1efb7ece9c in QCoreApplication::notifyInternal (this=0xad0000, receiver=0x3fc86b0, event=0x13285e0) at kernel/qcoreapplication.cpp:876
#21 0x00007f1efb7f0c6a in sendEvent (event=0x13285e0, receiver=0x3fc86b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xa511f0) at kernel/qcoreapplication.cpp:1500
#23 0x00007f1efb81bf93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#25 0x00007f1ef27fbc9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f1ef27fc060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f1ef27fc124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f1efb81c3bf in QEventDispatcherGlib::processEvents (this=0xa52ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f1efac17d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f1efb7ebc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f1efb7ebed7 in QEventLoop::exec (this=0x7fff3ae0a700, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007f1efb7f0f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#33 0x00007f1efe956a13 in kdemain (argc=1, argv=0x7fff3ae0aae8) at ../../../../plasma/desktop/shell/main.cpp:120
#34 0x00007f1efe57976d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff3ae0aae8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3ae0aad8) at libc-start.c:226
#35 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 300024.

Possible duplicates by query: bug 300024, bug 299063, bug 290712.

Reported using DrKonqi