Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.19.8-031908-generic x86_64
Distribution: Linux Mint 17.1 Rebecca

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

- Unusual behavior I noticed:
Memory consumption would go from 0.7 -- 1.8 GB after a few minutes of idle or use. This behavior is coupled by the CPU usage going up and down sporadically until memory increases to and plateaus out at 1.8 - 2.0 GB.

The crash can be reproduced sometimes.

-- 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 0x7fd841ae47c0 (LWP 2477))]

Thread 5 (Thread 0x7fd8170b7700 (LWP 2482)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd83a74dffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fd83a74e039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fd835260182 in start_thread (arg=0x7fd8170b7700) at pthread_create.c:312
#4  0x00007fd8413da47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fd78acef700 (LWP 2675)):
#0  0x00007fd834b8a61a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd834b8a9a9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd834b48680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd834b48f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd834b490ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd83df727be in QEventDispatcherGlib::processEvents (this=0x7fd7840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fd83df440af in QEventLoop::processEvents (this=this@entry=0x7fd78aceede0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fd83df443a5 in QEventLoop::exec (this=this@entry=0x7fd78aceede0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fd83de40c5f in QThread::exec (this=this@entry=0x2264b10) at thread/qthread.cpp:537
#9  0x00007fd83df25823 in QInotifyFileSystemWatcherEngine::run (this=0x2264b10) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fd83de4332f in QThreadPrivate::start (arg=0x2264b10) at thread/qthread_unix.cpp:349
#11 0x00007fd835260182 in start_thread (arg=0x7fd78acef700) at pthread_create.c:312
#12 0x00007fd8413da47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fd78983f700 (LWP 2676)):
#0  0x00007fd8413cd12d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd834b48fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd834b490ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd83df727be in QEventDispatcherGlib::processEvents (this=0x7fd77c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fd83df440af in QEventLoop::processEvents (this=this@entry=0x7fd78983ede0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd83df443a5 in QEventLoop::exec (this=this@entry=0x7fd78983ede0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fd83de40c5f in QThread::exec (this=this@entry=0x2433500) at thread/qthread.cpp:537
#7  0x00007fd83df25823 in QInotifyFileSystemWatcherEngine::run (this=0x2433500) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fd83de4332f in QThreadPrivate::start (arg=0x2433500) at thread/qthread_unix.cpp:349
#9  0x00007fd835260182 in start_thread (arg=0x7fd78983f700) at pthread_create.c:312
#10 0x00007fd8413da47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fd7813df700 (LWP 2683)):
#0  0x00007fd835262569 in __GI___pthread_mutex_lock (mutex=0x7fd778000a60) at ../nptl/pthread_mutex_lock.c:125
#1  0x00007fd834b8a981 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd834b481f8 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd834b48f91 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd834b490ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd83df727be in QEventDispatcherGlib::processEvents (this=0x7fd7780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fd83df440af in QEventLoop::processEvents (this=this@entry=0x7fd7813dee20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fd83df443a5 in QEventLoop::exec (this=this@entry=0x7fd7813dee20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fd83de40c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007fd83de4332f in QThreadPrivate::start (arg=0x2fdd030) at thread/qthread_unix.cpp:349
#10 0x00007fd835260182 in start_thread (arg=0x7fd7813df700) at pthread_create.c:312
#11 0x00007fd8413da47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fd841ae47c0 (LWP 2477)):
[KCrash Handler]
#6  QModelIndex (other=..., this=<synthetic pointer>) at /usr/include/qt4/QtCore/qabstractitemmodel.h:65
#7  KDescendantsProxyModel::mapFromSource (this=0x31315e0, sourceIndex=...) at ../../kdeui/itemviews/kdescendantsproxymodel.cpp:462
#8  0x00007fd83ebe029f in KDescendantsProxyModelPrivate::sourceDataChanged (this=<optimized out>, topLeft=..., bottomRight=...) at ../../kdeui/itemviews/kdescendantsproxymodel.cpp:963
#9  0x00007fd83df5987a in QMetaObject::activate (sender=sender@entry=0x2a38e60, m=m@entry=0x7fd83e2a96a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd03c50040) at kernel/qobject.cpp:3539
#10 0x00007fd83dfa3527 in QAbstractItemModel::dataChanged (this=this@entry=0x2a38e60, _t1=..., _t2=...) at .moc/release-shared/moc_qabstractitemmodel.cpp:163
#11 0x00007fd7908f7e23 in Akonadi::EntityTreeModelPrivate::dataChanged (this=this@entry=0x312a780, top=..., bottom=...) at ../../akonadi/entitytreemodel_p.cpp:1762
#12 0x00007fd790901782 in Akonadi::EntityTreeModelPrivate::monitoredItemChanged (this=0x312a780, item=...) at ../../akonadi/entitytreemodel_p.cpp:1210
#13 0x00007fd83df5987a in QMetaObject::activate (sender=0x2a3aa80, m=m@entry=0x7fd790c92ec0 <Akonadi::Monitor::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd03c502f0) at kernel/qobject.cpp:3539
#14 0x00007fd79093cf07 in Akonadi::Monitor::itemChanged (this=<optimized out>, _t1=..., _t2=...) at ./moc_monitor.cpp:231
#15 0x00007fd7909466ad in Akonadi::MonitorPrivate::emitItemsNotification (this=this@entry=0x2a394c0, msg=..., items=..., collection=..., collectionDest=...) at ../../akonadi/monitor_p.cpp:838
#16 0x00007fd790947ac5 in Akonadi::MonitorPrivate::emitNotification (this=0x2a394c0, msg=...) at ../../akonadi/monitor_p.cpp:511
#17 0x00007fd7909433d1 in Akonadi::MonitorPrivate::flushPipeline (this=this@entry=0x2a394c0) at ../../akonadi/monitor_p.cpp:718
#18 0x00007fd7909435a9 in Akonadi::MonitorPrivate::dataAvailable (this=0x2a394c0) at ../../akonadi/monitor_p.cpp:727
#19 0x00007fd83df5987a in QMetaObject::activate (sender=sender@entry=0x2a3b030, m=m@entry=0x7fd790c90b60 <Akonadi::EntityCacheBase::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#20 0x00007fd7908e73f0 in Akonadi::EntityCacheBase::dataAvailable (this=this@entry=0x2a3b030) at ./moc_entitycache_p.cpp:101
#21 0x00007fd7908a6caa in Akonadi::EntityListCache<Akonadi::Item, Akonadi::ItemFetchJob, Akonadi::ItemFetchScope>::processResult (this=0x2a3b030, job=<optimized out>) at ../../akonadi/entitycache_p.h:501
#22 0x00007fd83df5987a in QMetaObject::activate (sender=sender@entry=0x62c3ba0, m=m@entry=0x7fd83e9e2600 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffd03c50a10) at kernel/qobject.cpp:3539
#23 0x00007fd83e652912 in KJob::result (this=this@entry=0x62c3ba0, _t1=_t1@entry=0x62c3ba0) at ./kjob.moc:207
#24 0x00007fd83e652950 in KJob::emitResult (this=0x62c3ba0) at ../../kdecore/jobs/kjob.cpp:318
#25 0x00007fd83df5dc1e in QObject::event (this=0x62c3ba0, e=<optimized out>) at kernel/qobject.cpp:1194
#26 0x00007fd83d2d9e2c in QApplicationPrivate::notify_helper (this=this@entry=0x12a9d40, receiver=receiver@entry=0x62c3ba0, e=e@entry=0x59f9c80) at kernel/qapplication.cpp:4567
#27 0x00007fd83d2e04a0 in QApplication::notify (this=this@entry=0x12a42d0, receiver=receiver@entry=0x62c3ba0, e=e@entry=0x59f9c80) at kernel/qapplication.cpp:4353
#28 0x00007fd83ec19cca in KApplication::notify (this=0x12a42d0, receiver=0x62c3ba0, event=0x59f9c80) at ../../kdeui/kernel/kapplication.cpp:311
#29 0x00007fd83df454dd in QCoreApplication::notifyInternal (this=0x12a42d0, receiver=receiver@entry=0x62c3ba0, event=event@entry=0x59f9c80) at kernel/qcoreapplication.cpp:953
#30 0x00007fd83df48b3d in sendEvent (event=0x59f9c80, receiver=0x62c3ba0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x122e090) at kernel/qcoreapplication.cpp:1577
#32 0x00007fd83df48fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#33 0x00007fd83df72f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#34 postEventSourceDispatch (s=0x12b2790) at kernel/qeventdispatcher_glib.cpp:287
#35 0x00007fd834b48e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fd834b49048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fd834b490ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fd83df727a1 in QEventDispatcherGlib::processEvents (this=0x122f990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#39 0x00007fd83d37bbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#40 0x00007fd83df440af in QEventLoop::processEvents (this=this@entry=0x7ffd03c51040, flags=...) at kernel/qeventloop.cpp:149
#41 0x00007fd83df443a5 in QEventLoop::exec (this=this@entry=0x7ffd03c51040, flags=...) at kernel/qeventloop.cpp:204
#42 0x00007fd83df49b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#43 0x00007fd83d2d837c in QApplication::exec () at kernel/qapplication.cpp:3828
#44 0x00007fd8416e467c in kdemain (argc=1, argv=0x7ffd03c51298) at ../../../../plasma/desktop/shell/main.cpp:126
#45 0x00007fd841301ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7ffd03c51298, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd03c51288) at libc-start.c:287
#46 0x000000000040070e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 323642.

Possible duplicates by query: bug 323642.

Reported using DrKonqi