From time to time plasma crashes without any triggering from user. It gives just a segmentation fault. Also i can see that after each crash the .xsession-errors grows in GB range.

Reproducible: Couldn't Reproduce

Actual Results:  
Plasma crashes with and without any action from user.


From KCrash:

Application: Plasma-Desktop-Umgebung (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1692130780 (LWP 3687))]

Thread 11 (Thread 0x7f166a8a5700 (LWP 3691)):
#0  0x00007f168f77397d in read () from /lib64/libc.so.6
#1  0x00007f16802fbe41 in ?? () from /usr/lib64/tls/libnvidia-tls.so.319.17
#2  0x00007f168c6fee0f in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f168c6c2634 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f168c6c2a42 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f168c6c2bc4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#6  0x00007f1690dcb2e6 in QEventDispatcherGlib::processEvents (this=0x7f165c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f1690d9badf in QEventLoop::processEvents (this=this@entry=0x7f166a8a4dd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f1690d9bd68 in QEventLoop::exec (this=0x7f166a8a4dd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f1690c9e0f0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#10 0x00007f1690d7c29f in QInotifyFileSystemWatcherEngine::run (this=0x31e2aa0) at io/qfilesystemwatcher_inotify.cpp:256
#11 0x00007f1690ca10cc in QThreadPrivate::start (arg=0x31e2aa0) at thread/qthread_unix.cpp:338
#12 0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#13 0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f165bfff700 (LWP 3697)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f16866fa2f0 in ?? () from /usr/lib64/libQtWebKit.so.4
#2  0x00007f16866fa329 in ?? () from /usr/lib64/libQtWebKit.so.4
#3  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#4  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f165b7fe700 (LWP 3698)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1686478157 in ?? () from /usr/lib64/libQtWebKit.so.4
#2  0x00007f168672181e in ?? () from /usr/lib64/libQtWebKit.so.4
#3  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#4  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f165a96e700 (LWP 3699)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1684b92307 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f1684e9f660 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f1684b92339 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#4  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f1603144700 (LWP 3706)):
#0  0x00007f168f77787d in poll () from /lib64/libc.so.6
#1  0x00007f168c6c2aa4 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f168c6c2bc4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f1690dcb2e6 in QEventDispatcherGlib::processEvents (this=0x7f15fc0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1690d9badf in QEventLoop::processEvents (this=this@entry=0x7f1603143e00, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1690d9bd68 in QEventLoop::exec (this=0x7f1603143e00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1690c9e0f0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x2f8c460) at thread/qthread_unix.cpp:338
#8  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f15f8c35700 (LWP 3758)):
#0  0x00007f168f77787d in poll () from /lib64/libc.so.6
#1  0x00007f168c6c2aa4 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f168c6c2bc4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f1690dcb2e6 in QEventDispatcherGlib::processEvents (this=0x7f15f40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1690d9badf in QEventLoop::processEvents (this=this@entry=0x7f15f8c34dc0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1690d9bd68 in QEventLoop::exec (this=0x7f15f8c34dc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1690c9e0f0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007f15f9bf1755 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x5469ba0) at thread/qthread_unix.cpp:338
#9  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#10 0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f15f2e2e700 (LWP 8097)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1690ca162b in wait (time=18446744073709551615, this=0x3e7a320) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3e55b70, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1683dea981 in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f1683ded1cb in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f1683dec03f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f1683dec0cb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x8c39bc0) at thread/qthread_unix.cpp:338
#8  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f166a0a4700 (LWP 8098)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1690ca162b in wait (time=18446744073709551615, this=0x3e7a320) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3e55b70, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1683dea981 in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f1683ded1cb in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f1683dec03f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f1683dec0cb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x7c4fa30) at thread/qthread_unix.cpp:338
#8  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f15e84f4700 (LWP 8099)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1690ca162b in wait (time=18446744073709551615, this=0x3e7a320) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3e55b70, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1683dea981 in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f1683ded1cb in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f1683dec03f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f1683dec0cb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x7f9fb50) at thread/qthread_unix.cpp:338
#8  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f15e7cf3700 (LWP 8100)):
#0  0x00007f1690a0e964 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f1690ca162b in wait (time=18446744073709551615, this=0x3e7a320) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3e55b70, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1683dea981 in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f1683ded1cb in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f1683dec03f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f1683dec0cb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007f1690ca10cc in QThreadPrivate::start (arg=0x784fb50) at thread/qthread_unix.cpp:338
#8  0x00007f1690a0ae0f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f168f7807dd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f1692130780 (LWP 3687)):
[KCrash Handler]
#5  0x00007f1690db0f7e in QMetaObject::addGuard (ptr=0x7fff436c6190) at kernel/qobject.cpp:400
#6  0x00007f1684398bfe in QPointer (p=..., this=0x7fff436c6190) at ../../src/corelib/kernel/qpointer.h:62
#7  takeAt (i=1, this=0x57d7078) at ../../src/corelib/tools/qlist.h:486
#8  QDeclarativeRepeater::itemsRemoved (this=0x57d6dc0, index=1, count=<optimized out>) at graphicsitems/qdeclarativerepeater.cpp:407
#9  0x00007f1690db229f in QMetaObject::activate (sender=0x56f8fb0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff436c6310) at kernel/qobject.cpp:3548
#10 0x00007f16844ddaef in QDeclarativeVisualModel::itemsRemoved (this=<optimized out>, _t1=1, _t2=1) at .moc/release-shared/moc_qdeclarativevisualitemmodel_p.cpp:161
#11 0x00007f16843afb2c in QDeclarativeVisualDataModel::_q_itemsRemoved (this=0x56f8fb0, index=1, count=1) at graphicsitems/qdeclarativevisualitemmodel.cpp:1314
#12 0x00007f16844de121 in QDeclarativeVisualDataModel::qt_static_metacall (_o=0x7fff436c6190, _c=QMetaObject::ReadProperty, _id=43141536, _a=0x1) at .moc/release-shared/moc_qdeclarativevisualitemmodel_p.cpp:401
#13 0x00007f1690db229f in QMetaObject::activate (sender=0x5458140, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff436c6550) at kernel/qobject.cpp:3548
#14 0x00007f16844d257f in QListModelInterface::itemsRemoved (this=<optimized out>, _t1=1, _t2=1) at .moc/release-shared/moc_qlistmodelinterface_p.cpp:114
#15 0x00007f168431b5bf in QDeclarativeListModel::remove (this=0x5458140, index=1) at util/qdeclarativelistmodel.cpp:402
#16 0x00007f16844d114b in QDeclarativeListModel::qt_static_metacall (_o=0x7fff436c6190, _o@entry=0x5458140, _c=QMetaObject::ReadProperty, _c@entry=QMetaObject::InvokeMetaMethod, _id=43141536, _id@entry=2, _a=0x1, _a@entry=0x7fff436c67e0) at .moc/release-shared/moc_qdeclarativelistmodel_p.cpp:76
#17 0x00007f16844d124f in QDeclarativeListModel::qt_metacall (this=0x5458140, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x7fff436c67e0) at .moc/release-shared/moc_qdeclarativelistmodel_p.cpp:123
#18 0x00007f168447bd08 in QDeclarativeObjectMethodScriptClass::callMethod (this=this@entry=0x4954de0, object=object@entry=0x5458140, index=10, returnType=<optimized out>, argCount=<optimized out>, argTypes=0x7fff436c6aa0, ctxt=ctxt@entry=0x7f1601ab82a8) at qml/qdeclarativeobjectscriptclass.cpp:970
#19 0x00007f168447d976 in QDeclarativeObjectMethodScriptClass::callPrecise (this=0x4954de0, object=0x5458140, data=..., ctxt=0x7f1601ab82a8) at qml/qdeclarativeobjectscriptclass.cpp:944
#20 0x00007f168447e2ab in QDeclarativeObjectMethodScriptClass::call (this=<optimized out>, o=<optimized out>, ctxt=<optimized out>) at qml/qdeclarativeobjectscriptclass.cpp:917
#21 0x00007f1684c08593 in QScript::DeclarativeObjectDelegate::call (exec=<optimized out>, callee=0x7f1601a65700, thisValue=..., args=...) at bridge/qscriptdeclarativeobject.cpp:154
#22 0x00007f1684b04d70 in QTJSC::NativeFuncWrapper::operator() (this=0x7fff436c6bf0, exec=0x7f1601ab82a8, jsobj=0x7f1601a65700, thisValue=..., argList=...) at ../3rdparty/javascriptcore/JavaScriptCore/runtime/CallData.cpp:46
#23 0x00007f1684ae1fca in QTJSC::cti_op_call_NotJSFunction (args=0x7fff436c6c40) at ../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:1780
#24 0x00007f16755a8138 in ?? ()
#25 0x0000000000000000 in ?? ()