Bug 330752

Application: plasma-desktop (4.11.3)
KDE Platform Version: 4.12.0
Qt Version: 4.8.2
Operating System: Linux 3.2.0-58-generic x86_64
Distribution: Ubuntu 12.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Just opening thunderbird to check email, however i get random plasma crashes every so often(maybe 5 times a week), the random crashes can happen anytime, but happen most often when playing fullscreen games like Team Fortress 2

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f31d41fa7c0 (LWP 2636))]

Thread 12 (Thread 0x7f31adf46700 (LWP 2637)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:49
#1  __pthread_mutex_unlock (mutex=0x7f31a8000a80) at pthread_mutex_unlock.c:290
#2  0x00007f31c75d05e1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f31c75947fb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f31c7594f1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f31c7595124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f31d0653926 in QEventDispatcherGlib::processEvents (this=0x7f31a80008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f31d0622e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f31d06230b7 in QEventLoop::exec (this=0x7f31adf45d90, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f31d0522077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007f31d0602b6f in QInotifyFileSystemWatcherEngine::run (this=0x2ab80a0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007f31d052509b in QThreadPrivate::start (arg=0x2ab80a0) at thread/qthread_unix.cpp:307
#12 0x00007f31c7c91e9a in start_thread (arg=0x7f31adf46700) at pthread_create.c:308
#13 0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f31ace48700 (LWP 2638)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31cd406022 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f31cd406059 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f31c7c91e9a in start_thread (arg=0x7f31ace48700) at pthread_create.c:308
#4  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f3117a6b700 (LWP 2644)):
#0  0x00007f31d3addffd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f31c2994e41 in ?? () from /usr/lib/nvidia-319/tls/libnvidia-tls.so.319.32
#2  0x00007f31c75cf8df in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f31c7594b64 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f31c7594f96 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f31c7595124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f31d0653926 in QEventDispatcherGlib::processEvents (this=0x7f31100008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f31d0622e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f31d06230b7 in QEventLoop::exec (this=0x7f3117a6ad90, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f31d0522077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007f31d0602b6f in QInotifyFileSystemWatcherEngine::run (this=0x3577440) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007f31d052509b in QThreadPrivate::start (arg=0x3577440) at thread/qthread_unix.cpp:307
#12 0x00007f31c7c91e9a in start_thread (arg=0x7f3117a6b700) at pthread_create.c:308
#13 0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f3116063700 (LWP 4803)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x50b7960) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x50b7960, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x50b7960, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x50b7960, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x50b7960, previous=0x58d9c70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x50b7960) at ../../../threadweaver/Weaver/Thread.cpp:98
#9  0x00007f31d052509b in QThreadPrivate::start (arg=0x50b7960) at thread/qthread_unix.cpp:307
#10 0x00007f31c7c91e9a in start_thread (arg=0x7f3116063700) at pthread_create.c:308
#11 0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f3117065700 (LWP 4804)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x593fa20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x593fa20, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x593fa20, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x593fa20, previous=0x53348e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x593fa20) at ../../../threadweaver/Weaver/Thread.cpp:98
#8  0x00007f31d052509b in QThreadPrivate::start (arg=0x593fa20) at thread/qthread_unix.cpp:307
#9  0x00007f31c7c91e9a in start_thread (arg=0x7f3117065700) at pthread_create.c:308
#10 0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f3116864700 (LWP 4805)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x508d030) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x508d030, previous=0x527ee90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x508d030) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007f31d052509b in QThreadPrivate::start (arg=0x508d030) at thread/qthread_unix.cpp:307
#7  0x00007f31c7c91e9a in start_thread (arg=0x7f3116864700) at pthread_create.c:308
#8  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f310ffff700 (LWP 4806)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x527c7c0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x527c7c0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x527c7c0, previous=0x5185ce0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x527c7c0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f31d052509b in QThreadPrivate::start (arg=0x527c7c0) at thread/qthread_unix.cpp:307
#8  0x00007f31c7c91e9a in start_thread (arg=0x7f310ffff700) at pthread_create.c:308
#9  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f30f78d3700 (LWP 4807)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x5aec670) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x5aec670, previous=0x3c33420) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x5aec670) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007f31d052509b in QThreadPrivate::start (arg=0x5aec670) at thread/qthread_unix.cpp:307
#7  0x00007f31c7c91e9a in start_thread (arg=0x7f30f78d3700) at pthread_create.c:308
#8  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f30f6099700 (LWP 4808)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x5928db0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x5928db0, previous=0x3c91d40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x5928db0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007f31d052509b in QThreadPrivate::start (arg=0x5928db0) at thread/qthread_unix.cpp:307
#7  0x00007f31c7c91e9a in start_thread (arg=0x7f30f6099700) at pthread_create.c:308
#8  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f30f5898700 (LWP 4809)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x56935b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x56935b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x56935b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x56935b0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f31d052509b in QThreadPrivate::start (arg=0x56935b0) at thread/qthread_unix.cpp:307
#8  0x00007f31c7c91e9a in start_thread (arg=0x7f30f5898700) at pthread_create.c:308
#9  0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f30f5097700 (LWP 4810)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f31d05255ab in wait (time=18446744073709551615, this=0x2ab9ac0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2ab99b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f31cc6772fb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ad53c0, th=0x25c92b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f31cc679aab in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x25c92b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x25c92b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f31cc679ac4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ac4760, th=0x25c92b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007f31cc6788b1 in ThreadWeaver::Thread::run (this=0x25c92b0) at ../../../threadweaver/Weaver/Thread.cpp:98
#8  0x00007f31d052509b in QThreadPrivate::start (arg=0x25c92b0) at thread/qthread_unix.cpp:307
#9  0x00007f31c7c91e9a in start_thread (arg=0x7f30f5097700) at pthread_create.c:308
#10 0x00007f31d3aeb3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f31d41fa7c0 (LWP 2636)):
[KCrash Handler]
#6  QTimer::start (this=0x0, msec=800) at kernel/qtimer.cpp:233
#7  0x00007f31a79a8804 in MouseEventListener::sceneEventFilter (this=0x54b8a40, item=0x5744430, event=0x7fff0d5f2620) at ../../../../plasma/declarativeimports/qtextracomponents/mouseeventlistener.cpp:184
#8  0x00007f31cffad2b5 in QGraphicsScenePrivate::filterDescendantEvent (this=<optimized out>, item=0x5744430, event=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:1159
#9  0x00007f31cffb37be in QGraphicsScenePrivate::sendEvent (this=0x24d07b0, item=0x5744430, event=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:1211
#10 0x00007f31cffb440a in QGraphicsScenePrivate::sendMouseEvent (this=0x24d07b0, mouseEvent=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:1295
#11 0x00007f31cffb91f4 in QGraphicsScenePrivate::mousePressEventHandler (this=0x24d07b0, mouseEvent=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:1422
#12 0x00007f31cffb974f in QGraphicsScene::mousePressEvent (this=<optimized out>, mouseEvent=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:4074
#13 0x00007f31cffc2f7f in QGraphicsScene::event (this=0x25506d0, event=0x7fff0d5f2620) at graphicsview/qgraphicsscene.cpp:3455
#14 0x00007f31cf9a57b4 in notify_helper (e=0x7fff0d5f2620, receiver=0x25506d0, this=0x22af7e0) at kernel/qapplication.cpp:4556
#15 QApplicationPrivate::notify_helper (this=0x22af7e0, receiver=0x25506d0, e=0x7fff0d5f2620) at kernel/qapplication.cpp:4528
#16 0x00007f31cf9aa583 in QApplication::notify (this=0x228bc30, receiver=0x25506d0, e=0x7fff0d5f2620) at kernel/qapplication.cpp:4417
#17 0x00007f31d130a0e6 in KApplication::notify (this=0x228bc30, receiver=0x25506d0, event=0x7fff0d5f2620) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f31d062432c in QCoreApplication::notifyInternal (this=0x228bc30, receiver=0x25506d0, event=0x7fff0d5f2620) at kernel/qcoreapplication.cpp:915
#19 0x00007f31cffd87af in QGraphicsView::mousePressEvent (this=0x3bab780, event=0x7fff0d5f2fb0) at graphicsview/qgraphicsview.cpp:3164
#20 0x00007f31cf9f6299 in QWidget::event (this=0x3bab780, event=0x7fff0d5f2fb0) at kernel/qwidget.cpp:8367
#21 0x00007f31cfdb6836 in QFrame::event (this=0x3bab780, e=0x7fff0d5f2fb0) at widgets/qframe.cpp:557
#22 0x00007f31cffe12eb in QGraphicsView::viewportEvent (this=0x3bab780, event=0x7fff0d5f2fb0) at graphicsview/qgraphicsview.cpp:2866
#23 0x00007f31d06244b8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x3bc43e0, event=0x7fff0d5f2fb0) at kernel/qcoreapplication.cpp:1025
#24 0x00007f31cf9a577f in notify_helper (e=0x7fff0d5f2fb0, receiver=0x3bc43e0, this=0x22af7e0) at kernel/qapplication.cpp:4552
#25 QApplicationPrivate::notify_helper (this=0x22af7e0, receiver=0x3bc43e0, e=0x7fff0d5f2fb0) at kernel/qapplication.cpp:4528
#26 0x00007f31cf9aaf2f in QApplication::notify (this=<optimized out>, receiver=0x3bc43e0, e=0x7fff0d5f2fb0) at kernel/qapplication.cpp:4099
#27 0x00007f31d130a0e6 in KApplication::notify (this=0x228bc30, receiver=0x3bc43e0, event=0x7fff0d5f2fb0) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f31d062432c in QCoreApplication::notifyInternal (this=0x228bc30, receiver=0x3bc43e0, event=0x7fff0d5f2fb0) at kernel/qcoreapplication.cpp:915
#29 0x00007f31cf9a6782 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QApplicationPrivate::sendMouseEvent (receiver=0x3bc43e0, event=0x7fff0d5f2fb0, alienWidget=0x3bc43e0, nativeWidget=0x3bab780, buttonDown=0x3bc43e0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3167
#31 0x00007f31cfa25b15 in QETWidget::translateMouseEvent (this=0x3bab780, event=<optimized out>) at kernel/qapplication_x11.cpp:4617
#32 0x00007f31cfa24ace in QApplication::x11ProcessEvent (this=0x228bc30, event=0x7fff0d5f3880) at kernel/qapplication_x11.cpp:3732
#33 0x00007f31cfa4e052 in x11EventSourceDispatch (s=0x22f9720, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#34 0x00007f31c7594d13 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f31c7595060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f31c7595124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f31d06538bf in QEventDispatcherGlib::processEvents (this=0x21d9ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#38 0x00007f31cfa4dcde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007f31d0622e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007f31d06230b7 in QEventLoop::exec (this=0x7fff0d5f3c20, flags=...) at kernel/qeventloop.cpp:204
#41 0x00007f31d0628407 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#42 0x00007f31d3df4fbf in kdemain (argc=1, argv=0x7fff0d5f4008) at ../../../../plasma/desktop/shell/main.cpp:126
#43 0x00007f31d3a1876d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff0d5f4008, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0d5f3ff8) at libc-start.c:226
#44 0x0000000000400671 in _start ()

Possible duplicates by query: bug 330223, bug 330109, bug 329894, bug 327830, bug 327550.

Reported using DrKonqi