Application: plasmashell (5.4.1)
 (Compiled from sources)
Qt Version: 5.5.0
Operating System: Linux 4.1.6-201.fc22.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
I was just starting up the system and had issued the startx command. .xinitrc == 'startkde'.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3e13cbe900 (LWP 3155))]

Thread 7 (Thread 0x7f3debfff700 (LWP 3219)):
#0  0x00007f3e0b6af2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f3e06863dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3de4003070, timeout=<optimized out>, context=0x7f3de4000990) at gmain.c:4103
#2  0x00007f3e06863dbc in g_main_context_iterate (context=context@entry=0x7f3de4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3de4000990, may_block=1) at gmain.c:3869
#4  0x00007f3e0c4f2dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3e0c2b65a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f3e1057c245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f3e0c2bb54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 6 (Thread 0x7f3de2fe6700 (LWP 3245)):
#0  0x00007f3e06863cc0 in g_main_context_iterate (context=context@entry=0x7f3ddc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3777
#1  0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3ddc000990, may_block=1) at gmain.c:3869
#2  0x00007f3e0c4f2dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f3e0c2b65a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3e1057c245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f3e0c2bb54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#8  0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 5 (Thread 0x7f3de119a700 (LWP 3591)):
#0  0x00007f3e0b6aafad in read () at /usr/lib64/libc.so.6
#1  0x00007f3e068a7b00 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f3de1199aa0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  0x00007f3e068a7b00 in g_wakeup_acknowledge (wakeup=0x7f3ddc002390) at gwakeup.c:210
#3  0x00007f3e068638b4 in g_main_context_check (context=context@entry=0x7f3dd4000990, max_priority=2147483647, fds=fds@entry=0x7f3dd4003070, n_fds=n_fds@entry=1) at gmain.c:3600
#4  0x00007f3e06863d60 in g_main_context_iterate (context=context@entry=0x7f3dd4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#5  0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3dd4000990, may_block=1) at gmain.c:3869
#6  0x00007f3e0c4f2dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3e0c2b65a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f3e1057c245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f3e0c2bb54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#12 0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 4 (Thread 0x7f3ddafb8700 (LWP 3592)):
#0  0x00007f3e0a364540 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib64/libpthread.so.0
#1  0x00007f3e133b5494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQt5Script.so.5
#2  0x00007f3e133b54d9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#4  0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 3 (Thread 0x7f3d52db0700 (LWP 3663)):
#0  0x00007f3e0b6af2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f3e06863dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3d4c003120, timeout=<optimized out>, context=0x7f3d4c000990) at gmain.c:4103
#2  0x00007f3e06863dbc in g_main_context_iterate (context=context@entry=0x7f3d4c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3d4c000990, may_block=1) at gmain.c:3869
#4  0x00007f3e0c4f2dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3e0c2b65a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f3e1111e616 in QQuickPixmapReader::run() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f3e0c2bb54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 2 (Thread 0x7f3d47297700 (LWP 3670)):
#0  0x00007f3e0b6af2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f3e06863dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3d400048c0, timeout=<optimized out>, context=0x7f3d40000990) at gmain.c:4103
#2  0x00007f3e06863dbc in g_main_context_iterate (context=context@entry=0x7f3d40000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3d40000990, may_block=1) at gmain.c:3869
#4  0x00007f3e0c4f2dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3e0c2b65a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f3d48ee6397 in KCupsConnection::run() (this=0x3bf0720) at ../../libkcups/KCupsConnection.cpp:303
#8  0x00007f3e0c2bb54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f3e0a35f555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f3e0b6bab9d in clone () at /usr/lib64/libc.so.6

Thread 1 (Thread 0x7f3e13cbe900 (LWP 3155)):
[KCrash Handler]
#5  0x00007f3de9e9e71f in brw_workaround_depthstencil_alignment () at /usr/lib64/dri/i965_dri.so
#6  0x00007f3de9e26883 in brw_clear () at /usr/lib64/dri/i965_dri.so
#7  0x00007f3e1114e3fa in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f3e11153de2 in QSGBatchRenderer::Renderer::render() () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f3e1115fadf in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib64/libQt5Quick.so.5
#10 0x00007f3e1116032b in QSGRenderer::renderScene(unsigned int) () at /usr/lib64/libQt5Quick.so.5
#11 0x00007f3e1117071e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib64/libQt5Quick.so.5
#12 0x00007f3e111ba65b in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib64/libQt5Quick.so.5
#13 0x00007f3e1118b01b in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) () at /usr/lib64/libQt5Quick.so.5
#14 0x00007f3e1118c121 in QSGGuiThreadRenderLoop::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#15 0x00007f3e0da524ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007f3e0da57976 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f3e0c49c61b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f3e0c4f1bad in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#19 0x00007f3e0c4f20b1 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f3e06863a8a in g_main_context_dispatch (context=0x7f3dec0016f0) at gmain.c:3122
#21 0x00007f3e06863a8a in g_main_context_dispatch (context=context@entry=0x7f3dec0016f0) at gmain.c:3737
#22 0x00007f3e06863e20 in g_main_context_iterate (context=context@entry=0x7f3dec0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#23 0x00007f3e06863ecc in g_main_context_iteration (context=0x7f3dec0016f0, may_block=1) at gmain.c:3869
#24 0x00007f3e0c4f2d8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f3e0c499daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f3e0c4a1e6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#27 0x00000000004302c3 in main(int, char**) (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 352678, bug 351509, bug 343756.

Reported using DrKonqi