Bug 350022

Application: plasmashell (5.3.90)

Qt Version: 5.5.0
Operating System: Linux 4.1.1-gentoo-r1 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:
started via startx /startkde 
the last two starts before i saw only one empty window and console told me 'timeout'

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe7419f57c0 (LWP 4850))]

Thread 8 (Thread 0x7fe72bb94700 (LWP 4852)):
#0  0x00007fe73c14998d in poll () from /lib64/libc.so.6
#1  0x00007fe7401cf97a in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fe7401d13a7 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fe72db1ae69 in QXcbEventReader::run (this=0x7019d0) at qxcbconnection.cpp:1197
#4  0x00007fe73c7ba446 in QThreadPrivate::start (arg=0x7019d0) at thread/qthread_unix.cpp:331
#5  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fe729cc4700 (LWP 4854)):
#0  0x00007fe737f70b41 in g_mutex_lock (mutex=mutex@entry=0x7fe71c000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x00007fe737f2dc9e in g_main_context_dispatch (context=context@entry=0x7fe71c000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3733
#2  0x00007fe737f2e190 in g_main_context_iterate (context=context@entry=0x7fe71c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3808
#3  0x00007fe737f2e23c in g_main_context_iteration (context=0x7fe71c000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#4  0x00007fe73c9fe55c in QEventDispatcherGlib::processEvents (this=0x7fe71c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fe73c9a4272 in QEventLoop::exec (this=this@entry=0x7fe729cc3de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fe73c7b5664 in QThread::exec (this=this@entry=0x77f1f0) at thread/qthread.cpp:503
#7  0x00007fe73f06a7c5 in QQmlThreadPrivate::run (this=0x77f1f0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fe73c7ba446 in QThreadPrivate::start (arg=0x77f1f0) at thread/qthread_unix.cpp:331
#9  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fe72236c700 (LWP 4855)):
#0  0x00007fe737f70b41 in g_mutex_lock (mutex=mutex@entry=0x7fe718000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x00007fe737f2d0b8 in g_main_context_acquire (context=0x7fe718000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3182
#2  0x00007fe737f2dfe5 in g_main_context_iterate (context=context@entry=0x7fe718000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3758
#3  0x00007fe737f2e23c in g_main_context_iteration (context=0x7fe718000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#4  0x00007fe73c9fe55c in QEventDispatcherGlib::processEvents (this=0x7fe7180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fe73c9a4272 in QEventLoop::exec (this=this@entry=0x7fe72236bde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fe73c7b5664 in QThread::exec (this=this@entry=0xa550e0) at thread/qthread.cpp:503
#7  0x00007fe73f06a7c5 in QQmlThreadPrivate::run (this=0xa550e0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fe73c7ba446 in QThreadPrivate::start (arg=0xa550e0) at thread/qthread_unix.cpp:331
#9  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fe7208fc700 (LWP 4858)):
#0  0x00007fe73c14998d in poll () from /lib64/libc.so.6
#1  0x00007fe737f2e12c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fe710002c70, timeout=-1, context=0x7fe710000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7fe710000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3803
#3  0x00007fe737f2e23c in g_main_context_iteration (context=0x7fe710000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#4  0x00007fe73c9fe55c in QEventDispatcherGlib::processEvents (this=0x7fe7100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fe73c9a4272 in QEventLoop::exec (this=this@entry=0x7fe7208fbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fe73c7b5664 in QThread::exec (this=this@entry=0xbb2450) at thread/qthread.cpp:503
#7  0x00007fe73f06a7c5 in QQmlThreadPrivate::run (this=0xbb2450) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fe73c7ba446 in QThreadPrivate::start (arg=0xbb2450) at thread/qthread_unix.cpp:331
#9  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fe716f64700 (LWP 4859)):
#0  0x00007fe73b95977f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe74143dd24 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fe74152be40 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fe74143dd69 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fe68ffff700 (LWP 4860)):
#0  0x00007fe73c14998d in poll () from /lib64/libc.so.6
#1  0x00007fe737f2e12c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fe688003120, timeout=-1, context=0x7fe688000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7fe688000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3803
#3  0x00007fe737f2e23c in g_main_context_iteration (context=0x7fe688000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#4  0x00007fe73c9fe55c in QEventDispatcherGlib::processEvents (this=0x7fe6880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fe73c9a4272 in QEventLoop::exec (this=this@entry=0x7fe68fffed90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fe73c7b5664 in QThread::exec (this=this@entry=0xc298c0) at thread/qthread.cpp:503
#7  0x00007fe73fa03bc6 in QQuickPixmapReader::run (this=0xc298c0) at util/qquickpixmapcache.cpp:754
#8  0x00007fe73c7ba446 in QThreadPrivate::start (arg=0xc298c0) at thread/qthread_unix.cpp:331
#9  0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fe687fff700 (LWP 4861)):
[KCrash Handler]
#6  0x00007fe73c0efc91 in ?? () from /lib64/libc.so.6
#7  0x00007fe73fa553d2 in strstr (__needle=0x7fe73fbf55d6 "nouveau", __haystack=0x0) at /usr/include/string.h:336
#8  QSGRenderContext::initialize (this=0xd53bc0, context=<optimized out>) at scenegraph/qsgcontext.cpp:659
#9  0x00007fe73fa748f9 in QSGRenderThread::run (this=0xe74270) at scenegraph/qsgthreadedrenderloop.cpp:673
#10 0x00007fe73c7ba446 in QThreadPrivate::start (arg=0xe74270) at thread/qthread_unix.cpp:331
#11 0x00007fe73b955354 in start_thread () from /lib64/libpthread.so.0
#12 0x00007fe73c1524ad in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fe7419f57c0 (LWP 4850)):
#0  0x00007fe73b95977f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe73c7bb5c3 in wait (time=18446744073709551615, this=0xe2bca0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xe742b0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fe73fa75f88 in QSGThreadedRenderLoop::polishAndSync (this=this@entry=0x8b8170, w=<optimized out>, w@entry=0xd5ab50, inExpose=inExpose@entry=true) at scenegraph/qsgthreadedrenderloop.cpp:1147
#4  0x00007fe73fa784ff in QSGThreadedRenderLoop::handleExposure (this=this@entry=0x8b8170, window=window@entry=0xd53fb0) at scenegraph/qsgthreadedrenderloop.cpp:943
#5  0x00007fe73fa78da1 in QSGThreadedRenderLoop::exposureChanged (this=0x8b8170, window=0xd53fb0) at scenegraph/qsgthreadedrenderloop.cpp:854
#6  0x00007fe73ccf9365 in QWindow::event (this=this@entry=0xd53fb0, ev=ev@entry=0x7ffdbafd93f0) at kernel/qwindow.cpp:2054
#7  0x00007fe73faab763 in QQuickWindow::event (this=this@entry=0xd53fb0, e=e@entry=0x7ffdbafd93f0) at items/qquickwindow.cpp:1414
#8  0x000000000043c636 in DesktopView::event (this=0xd53fb0, e=0x7ffdbafd93f0) at /var/tmp/portage/kde-plasma/plasma-workspace-9999/work/plasma-workspace-9999/shell/desktopview.cpp:206
#9  0x00007fe73d4d82bc in QApplicationPrivate::notify_helper (this=this@entry=0x6e8140, receiver=receiver@entry=0xd53fb0, e=e@entry=0x7ffdbafd93f0) at kernel/qapplication.cpp:3717
#10 0x00007fe73d4dd710 in QApplication::notify (this=0x7ffdbafd9850, receiver=0xd53fb0, e=0x7ffdbafd93f0) at kernel/qapplication.cpp:3500
#11 0x00007fe73c9a6943 in QCoreApplication::notifyInternal (this=0x7ffdbafd9850, receiver=receiver@entry=0xd53fb0, event=event@entry=0x7ffdbafd93f0) at kernel/qcoreapplication.cpp:965
#12 0x00007fe73ccf17b0 in sendSpontaneousEvent (event=0x7ffdbafd93f0, receiver=0xd53fb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#13 QGuiApplicationPrivate::processExposeEvent (e=0xd5a280) at kernel/qguiapplication.cpp:2643
#14 0x00007fe73ccf24a5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0xd5a280) at kernel/qguiapplication.cpp:1644
#15 0x00007fe73ccd650e in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:608
#16 0x00007fe72db46d60 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#17 0x00007fe737f2deb4 in g_main_dispatch (context=0x7fe724002450) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3122
#18 g_main_context_dispatch (context=context@entry=0x7fe724002450) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3737
#19 0x00007fe737f2e190 in g_main_context_iterate (context=context@entry=0x7fe724002450, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3808
#20 0x00007fe737f2e23c in g_main_context_iteration (context=0x7fe724002450, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#21 0x00007fe73c9fe547 in QEventDispatcherGlib::processEvents (this=0x72f890, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007fe73c9a4272 in QEventLoop::exec (this=this@entry=0x7ffdbafd96d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007fe73c9ac104 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#24 0x00007fe73cce786c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1528
#25 0x00007fe73d4d4045 in QApplication::exec () at kernel/qapplication.cpp:2977
#26 0x00000000004308b6 in main (argc=4, argv=<optimized out>) at /var/tmp/portage/kde-plasma/plasma-workspace-9999/work/plasma-workspace-9999/shell/main.cpp:155

Possible duplicates by query: bug 348812.

Reported using DrKonqi