Bug 317855

Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.5
Qt Version: 4.8.3
Operating System: Linux 3.5.0-27-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:

Moving the "minitature box" (translated from French) from a panel on one screen to another panel on another screen. 

- Unusual behavior I noticed:

The widget end up in the middle of the screen. I tried to close it and the system froze.

-- Backtrace:
Application: Outil de gestion de fenêtres 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 0x7f07e7fca7c0 (LWP 4957))]

Thread 9 (Thread 0x7f07c1f36700 (LWP 4959)):
#0  0x00007f07dbc5505d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f07bc000a90) at pthread_mutex_unlock.c:290
#2  0x00007f07db58fe51 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07db552d79 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f07db552ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f07e4561c16 in QEventDispatcherGlib::processEvents (this=0x7f07bc0008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f07e45322bf in QEventLoop::processEvents (this=this@entry=0x7f07c1f35cd0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f07e4532548 in QEventLoop::exec (this=0x7f07c1f35cd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f07e4433b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f07e45129af in QInotifyFileSystemWatcherEngine::run (this=0x1a68de0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f07e4436aec in QThreadPrivate::start (arg=0x1a68de0) at thread/qthread_unix.cpp:338
#11 0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#12 0x00007f07dbc51e9a in start_thread (arg=0x7f07c1f36700) at pthread_create.c:308
#13 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f07c0a2c700 (LWP 4960)):
#0  0x00007f07e78b3313 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f07db552d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07db552ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07e4561c16 in QEventDispatcherGlib::processEvents (this=0x7f07b00008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f07e45322bf in QEventLoop::processEvents (this=this@entry=0x7f07c0a2bcd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f07e4532548 in QEventLoop::exec (this=0x7f07c0a2bcd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f07e4433b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f07e45129af in QInotifyFileSystemWatcherEngine::run (this=0x1fff660) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f07e4436aec in QThreadPrivate::start (arg=0x1fff660) at thread/qthread_unix.cpp:338
#9  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#10 0x00007f07dbc51e9a in start_thread (arg=0x7f07c0a2c700) at pthread_create.c:308
#11 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f07b6572700 (LWP 4963)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e15b8cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f07e15b8d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#4  0x00007f07dbc51e9a in start_thread (arg=0x7f07b6572700) at pthread_create.c:308
#5  0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f07b9365700 (LWP 23134)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e443704b in wait (time=18446744073709551615, this=0x1d673a0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d19a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f07e083d0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e603f0, th=0x3e7bb40) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f07e083f92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d17940, th=0x3e7bb40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f07e083e79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f07b9364d00, parent=0x1e603f0, th=th@entry=0x3e7bb40) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f07e083e82b in ThreadWeaver::Thread::run (this=0x3e7bb40) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f07e4436aec in QThreadPrivate::start (arg=0x3e7bb40) at thread/qthread_unix.cpp:338
#8  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#9  0x00007f07dbc51e9a in start_thread (arg=0x7f07b9365700) at pthread_create.c:308
#10 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f079b1b1700 (LWP 23135)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e443704b in wait (time=18446744073709551615, this=0x1d673a0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d19a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f07e083d0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e603f0, th=0x3e119f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f07e083f92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d17940, th=0x3e119f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f07e083e79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f079b1b0d00, parent=0x1e603f0, th=th@entry=0x3e119f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f07e083e82b in ThreadWeaver::Thread::run (this=0x3e119f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f07e4436aec in QThreadPrivate::start (arg=0x3e119f0) at thread/qthread_unix.cpp:338
#8  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#9  0x00007f07dbc51e9a in start_thread (arg=0x7f079b1b1700) at pthread_create.c:308
#10 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f079a9b0700 (LWP 23136)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e443704b in wait (time=18446744073709551615, this=0x1d673a0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d19a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f07e083d0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e603f0, th=0x564aa80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f07e083f92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d17940, th=0x564aa80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f07e083e79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f079a9afd00, parent=0x1e603f0, th=th@entry=0x564aa80) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f07e083e82b in ThreadWeaver::Thread::run (this=0x564aa80) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f07e4436aec in QThreadPrivate::start (arg=0x564aa80) at thread/qthread_unix.cpp:338
#8  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#9  0x00007f07dbc51e9a in start_thread (arg=0x7f079a9b0700) at pthread_create.c:308
#10 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f079a1af700 (LWP 23137)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e443704b in wait (time=18446744073709551615, this=0x1d673a0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d19a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f07e083d0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e603f0, th=0x45f8710) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f07e083f92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d17940, th=0x45f8710) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f07e083e79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f079a1aed00, parent=0x1e603f0, th=th@entry=0x45f8710) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f07e083e82b in ThreadWeaver::Thread::run (this=0x45f8710) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f07e4436aec in QThreadPrivate::start (arg=0x45f8710) at thread/qthread_unix.cpp:338
#8  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#9  0x00007f07dbc51e9a in start_thread (arg=0x7f079a1af700) at pthread_create.c:308
#10 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f07999ae700 (LWP 23138)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f07e443704b in wait (time=18446744073709551615, this=0x1d673a0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1d19a90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f07e083d0e1 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e603f0, th=0x3ae5c80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f07e083f92b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d17940, th=0x3ae5c80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f07e083e79f in ThreadWeaver::ThreadRunHelper::run (this=this@entry=0x7f07999add00, parent=0x1e603f0, th=th@entry=0x3ae5c80) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f07e083e82b in ThreadWeaver::Thread::run (this=0x3ae5c80) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f07e4436aec in QThreadPrivate::start (arg=0x3ae5c80) at thread/qthread_unix.cpp:338
#8  0x00007f07d8e8a764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#9  0x00007f07dbc51e9a in start_thread (arg=0x7f07999ae700) at pthread_create.c:308
#10 0x00007f07e78beccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f07e7fca7c0 (LWP 4957)):
[KCrash Handler]
#6  0x00000000075c8bb0 in ?? ()
#7  0x00007f07e454cbda in QObject::connect (sender=0x3669320, signal=0x7f07c958ca29 "2destroyed()", receiver=0x2e22190, method=0x7f07c958ca18 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#8  0x00007f07c956f908 in SystemTray::Task::widget (this=0x2e22190, host=0x75367b0, createIfNecessary=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#9  0x00007f07c9589556 in SystemTray::TaskArea::addWidgetForTask (this=this@entry=0x6087dd0, task=0x2e22190) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:270
#10 0x00007f07c9589c46 in SystemTray::TaskArea::addTask (this=0x6087dd0, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#11 0x00007f07e4548f5f in QMetaObject::activate (sender=0xd157d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffc0675a00) at kernel/qobject.cpp:3547
#12 0x00007f07c956ea62 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x2e22190) at ./manager.moc:120
#13 0x00007f07e4548f5f in QMetaObject::activate (sender=0x2e22190, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffc0675b50) at kernel/qobject.cpp:3547
#14 0x00007f07c956f65f in SystemTray::Task::changed (this=<optimized out>, _t1=0x2e22190) at ./task.moc:128
#15 0x00007f07e454843e in QObject::event (this=0x2e22190, e=<optimized out>) at kernel/qobject.cpp:1195
#16 0x00007f07e38dae9c in QApplicationPrivate::notify_helper (this=this@entry=0x83d410, receiver=receiver@entry=0x2e22190, e=e@entry=0x366a280) at kernel/qapplication.cpp:4562
#17 0x00007f07e38df30a in QApplication::notify (this=0x7d07b0, receiver=0x2e22190, e=0x366a280) at kernel/qapplication.cpp:4423
#18 0x00007f07e51ec1f6 in KApplication::notify (this=0x7d07b0, receiver=0x2e22190, event=0x366a280) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007f07e453356e in QCoreApplication::notifyInternal (this=0x7d07b0, receiver=receiver@entry=0x2e22190, event=event@entry=0x366a280) at kernel/qcoreapplication.cpp:915
#20 0x00007f07e45373f1 in sendEvent (event=0x366a280, receiver=0x2e22190) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#21 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x7261f0) at kernel/qcoreapplication.cpp:1539
#22 0x00007f07e4561a63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#23 postEventSourceDispatch (s=0x83b290) at kernel/qeventdispatcher_glib.cpp:279
#24 0x00007f07db552ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f07db552de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f07db552ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f07e4561bf6 in QEventDispatcherGlib::processEvents (this=0x727ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0x00007f07e397fc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f07e45322bf in QEventLoop::processEvents (this=this@entry=0x7fffc0676450, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f07e4532548 in QEventLoop::exec (this=0x7fffc0676450, flags=...) at kernel/qeventloop.cpp:204
#31 0x00007f07e4537708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#32 0x00007f07e7bc5035 in kdemain (argc=1, argv=0x7fffc0676748) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x00007f07e77ec76d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=1, ubp_av=0x7fffc0676748, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc0676738) at libc-start.c:226
#34 0x00000000004006d1 in _start ()

Possible duplicates by query: bug 316771, bug 313952, bug 313400, bug 313045, bug 311163.

Reported using DrKonqi