Application: plasma-desktop (4.11.8)
KDE Platform Version: 4.12.4
Qt Version: 4.8.5
Operating System: Linux 3.13.10-200.fc20.x86_64 x86_64
Distribution: "Fedora release 20 (Heisenbug)"

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

- Unusual behavior I noticed:
ı run chrome browser then it is frozen and ı tried to close it.after that the system frozen and ı saw black desktop.ı think it is related whit fully of chrome browser bc ı have never ever saw like this befor ı installed chrome broser.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f95888fe8c0 (LWP 1297))]

Thread 3 (Thread 0x7f956f25e700 (LWP 1302)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000003f6c38f09b in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x3f6c68df00 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x0000003f6c38f0d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003f4c007f33 in start_thread (arg=0x7f956f25e700) at pthread_create.c:309
#4  0x0000003f4bcf4ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f94e981c700 (LWP 1303)):
#0  0x00007fff7cffea1f in clock_gettime ()
#1  0x0000003f4bd02f3d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x0000003f544d37ab in do_gettime (frac=0x7f94e981ba20, sec=0x7f94e981ba18) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0x0000003f545b4655 in updateCurrentTime (this=0x7f94e4002860) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x7f94e4002860, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0x0000003f545b2cdc in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f94e981baf4) at kernel/qeventdispatcher_glib.cpp:136
#7  0x0000003f545b2da5 in timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7f94e981baf4) at kernel/qeventdispatcher_glib.cpp:169
#8  0x0000003f4e848bed in g_main_context_prepare (context=context@entry=0x7f94e40009a0, priority=priority@entry=0x7f94e981bb80) at gmain.c:3340
#9  0x0000003f4e8494bb in g_main_context_iterate (context=context@entry=0x7f94e40009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3693
#10 0x0000003f4e8496dc in g_main_context_iteration (context=0x7f94e40009a0, may_block=1) at gmain.c:3774
#11 0x0000003f545b2ec6 in QEventDispatcherGlib::processEvents (this=0x7f94e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#12 0x0000003f54582edf in QEventLoop::processEvents (this=this@entry=0x7f94e981bcc0, flags=...) at kernel/qeventloop.cpp:149
#13 0x0000003f5458322d in QEventLoop::exec (this=this@entry=0x7f94e981bcc0, flags=...) at kernel/qeventloop.cpp:204
#14 0x0000003f54479baf in QThread::exec (this=this@entry=0x2ab55b0) at thread/qthread.cpp:536
#15 0x0000003f54563863 in QInotifyFileSystemWatcherEngine::run (this=0x2ab55b0) at io/qfilesystemwatcher_inotify.cpp:265
#16 0x0000003f5447c3af in QThreadPrivate::start (arg=0x2ab55b0) at thread/qthread_unix.cpp:338
#17 0x0000003f4c007f33 in start_thread (arg=0x7f94e981c700) at pthread_create.c:309
#18 0x0000003f4bcf4ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f95888fe8c0 (LWP 1297)):
[KCrash Handler]
#6  QGraphicsItem::ungrabMouse (this=0x45cbef0) at graphicsview/qgraphicsitem.cpp:3530
#7  0x00000031709c62ff in QGraphicsScenePrivate::clearMouseGrabber (this=this@entry=0x246bae0) at graphicsview/qgraphicsscene.cpp:1004
#8  0x00000031709c994b in QGraphicsScenePrivate::sendMouseEvent (this=0x246bae0, mouseEvent=0x7fff7cfe54b0) at graphicsview/qgraphicsscene.cpp:1279
#9  0x00000031709d2e26 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff7cfe54b0) at graphicsview/qgraphicsscene.cpp:4102
#10 0x00000031709df06c in QGraphicsScene::event (this=0x24982f0, event=0x7fff7cfe54b0) at graphicsview/qgraphicsscene.cpp:3451
#11 0x00000031703c9d8c in QApplicationPrivate::notify_helper (this=0x2304860, receiver=0x24982f0, e=0x7fff7cfe54b0) at kernel/qapplication.cpp:4562
#12 0x00000031703d0725 in QApplication::notify (this=this@entry=0x22fdd90, receiver=receiver@entry=0x24982f0, e=e@entry=0x7fff7cfe54b0) at kernel/qapplication.cpp:4348
#13 0x0000003db124ab0a in KApplication::notify (this=0x22fdd90, receiver=0x24982f0, event=0x7fff7cfe54b0) at /usr/src/debug/kdelibs-4.12.4/kdeui/kernel/kapplication.cpp:311
#14 0x0000003f5458439d in QCoreApplication::notifyInternal (this=0x22fdd90, receiver=0x24982f0, event=event@entry=0x7fff7cfe54b0) at kernel/qcoreapplication.cpp:949
#15 0x00000031703c8606 in sendSpontaneousEvent (event=event@entry=0x7fff7cfe54b0, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:234
#16 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff7cfe54b0) at kernel/qapplication.cpp:5560
#17 0x00000031709f52e4 in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x3710250, event=event@entry=0x7fff7cfe5b80) at graphicsview/qgraphicsview.cpp:646
#18 0x00000031709f636a in QGraphicsView::mouseMoveEvent (this=0x36c3b40, event=0x7fff7cfe5b80) at graphicsview/qgraphicsview.cpp:3276
#19 0x000000317041cc26 in QWidget::event (this=this@entry=0x36c3b40, event=event@entry=0x7fff7cfe5b80) at kernel/qwidget.cpp:8361
#20 0x00000031707d315e in QFrame::event (this=0x36c3b40, e=0x7fff7cfe5b80) at widgets/qframe.cpp:557
#21 0x00000031709f7a99 in QGraphicsView::viewportEvent (this=0x36c3b40, event=0x7fff7cfe5b80) at graphicsview/qgraphicsview.cpp:2866
#22 0x0000003f54584506 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x39d2900, event=0x7fff7cfe5b80) at kernel/qcoreapplication.cpp:1059
#23 0x00000031703c9d6c in QApplicationPrivate::notify_helper (this=0x2304860, receiver=0x39d2900, e=0x7fff7cfe5b80) at kernel/qapplication.cpp:4558
#24 0x00000031703d0879 in QApplication::notify (this=this@entry=0x22fdd90, receiver=receiver@entry=0x39d2900, e=e@entry=0x7fff7cfe5b80) at kernel/qapplication.cpp:4105
#25 0x0000003db124ab0a in KApplication::notify (this=0x22fdd90, receiver=0x39d2900, event=0x7fff7cfe5b80) at /usr/src/debug/kdelibs-4.12.4/kdeui/kernel/kapplication.cpp:311
#26 0x0000003f5458439d in QCoreApplication::notifyInternal (this=0x22fdd90, receiver=0x39d2900, event=0x7fff7cfe5b80) at kernel/qcoreapplication.cpp:949
#27 0x00000031703cffa7 in QApplicationPrivate::sendMouseEvent (receiver=0x39d2900, event=0x7fff7cfe5b80, alienWidget=0x39d2900, nativeWidget=0x36c3b40, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#28 0x00000031704456ab in QETWidget::translateMouseEvent (this=0x36c3b40, event=<optimized out>) at kernel/qapplication_x11.cpp:4538
#29 0x000000317044411c in QApplication::x11ProcessEvent (this=0x22fdd90, event=event@entry=0x7fff7cfe5ef0) at kernel/qapplication_x11.cpp:3661
#30 0x000000317046bb24 in x11EventSourceDispatch (s=s@entry=0x2304700, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#31 0x0000003f4e8492a6 in g_main_dispatch (context=0x2304bf0) at gmain.c:3066
#32 g_main_context_dispatch (context=context@entry=0x2304bf0) at gmain.c:3642
#33 0x0000003f4e849628 in g_main_context_iterate (context=context@entry=0x2304bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3713
#34 0x0000003f4e8496dc in g_main_context_iteration (context=0x2304bf0, may_block=1) at gmain.c:3774
#35 0x0000003f545b2ea5 in QEventDispatcherGlib::processEvents (this=0x2287240, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#36 0x000000317046bca6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#37 0x0000003f54582edf in QEventLoop::processEvents (this=this@entry=0x7fff7cfe62e0, flags=...) at kernel/qeventloop.cpp:149
#38 0x0000003f5458322d in QEventLoop::exec (this=this@entry=0x7fff7cfe62e0, flags=...) at kernel/qeventloop.cpp:204
#39 0x0000003f54588749 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#40 0x00000031703c83fc in QApplication::exec () at kernel/qapplication.cpp:3823
#41 0x0000003db463d9cc in kdemain (argc=1, argv=0x7fff7cfe6558) at /usr/src/debug/kde-workspace-4.11.8/plasma/desktop/shell/main.cpp:126
#42 0x0000003f4bc21d65 in __libc_start_main (main=0x400940 <main(int, char**)>, argc=1, argv=0x7fff7cfe6558, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7cfe6548) at libc-start.c:285
#43 0x0000000000400971 in _start ()

Possible duplicates by query: bug 329895, bug 327737, bug 327686, bug 327587, bug 327576.

Reported using DrKonqi