Bug 359510

Application: plasmashell (5.5.4)
 (Compiled from sources)
Qt Version: 5.5.1
Operating System: Linux 4.4.1-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:
- Create new user via Account Settings
- Log out from main user
- Enter password on new user
- Plasma crash

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5480f2e7c0 (LWP 9100))]

Thread 7 (Thread 0x7f546f312700 (LWP 9103)):
#0  0x00007f547b72d57d in poll () from /lib64/libc.so.6
#1  0x00007f547f6cfac2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f547f6d1747 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f5471a986c9 in QXcbEventReader::run (this=0x1459380) at qxcbconnection.cpp:1229
#4  0x00007f547be0c292 in QThreadPrivate::start (arg=0x1459380) at thread/qthread_unix.cpp:331
#5  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f5467fff700 (LWP 9104)):
#0  0x00007f54775e54b9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f547759fee0 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f54775a0e05 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f54775a105c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f547bffc71b in QEventDispatcherGlib::processEvents (this=0x7f54600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f547bfae6fa in QEventLoop::exec (this=this@entry=0x7f5467ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f547be07c74 in QThread::exec (this=this@entry=0x151c7e0) at thread/qthread.cpp:503
#7  0x00007f547e5a0675 in QQmlThreadPrivate::run (this=0x151c7e0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f547be0c292 in QThreadPrivate::start (arg=0x151c7e0) at thread/qthread_unix.cpp:331
#9  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f545d55f700 (LWP 9105)):
#0  0x00007f54775e54b9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f54775a0ad6 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f54775a0fb0 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f54775a105c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f547bffc71b in QEventDispatcherGlib::processEvents (this=0x7f54580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f547bfae6fa in QEventLoop::exec (this=this@entry=0x7f545d55ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f547be07c74 in QThread::exec (this=this@entry=0x170a860) at thread/qthread.cpp:503
#7  0x00007f547e5a0675 in QQmlThreadPrivate::run (this=0x170a860) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f547be0c292 in QThreadPrivate::start (arg=0x170a860) at thread/qthread_unix.cpp:331
#9  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f5457592700 (LWP 9106)):
#0  0x00007f547b72d57d in poll () from /lib64/libc.so.6
#1  0x00007f54775a0f4c in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f54775a105c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f547bffc71b in QEventDispatcherGlib::processEvents (this=0x7f54500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f547bfae6fa in QEventLoop::exec (this=this@entry=0x7f5457591de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f547be07c74 in QThread::exec (this=this@entry=0x1788050) at thread/qthread.cpp:503
#6  0x00007f547e5a0675 in QQmlThreadPrivate::run (this=0x1788050) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f547be0c292 in QThreadPrivate::start (arg=0x1788050) at thread/qthread_unix.cpp:331
#8  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f5455c8a700 (LWP 9107)):
#0  0x00007f547af45faf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f548095a1a4 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f548095a1e9 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f53cef89700 (LWP 9108)):
#0  0x00007f54775e54d4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f54775a0e6e in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f54775a105c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f547bffc71b in QEventDispatcherGlib::processEvents (this=0x7f53c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f547bfae6fa in QEventLoop::exec (this=this@entry=0x7f53cef88d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f547be07c74 in QThread::exec (this=this@entry=0x1ab1ed0) at thread/qthread.cpp:503
#6  0x00007f547ef27f76 in QQuickPixmapReader::run (this=0x1ab1ed0) at util/qquickpixmapcache.cpp:760
#7  0x00007f547be0c292 in QThreadPrivate::start (arg=0x1ab1ed0) at thread/qthread_unix.cpp:331
#8  0x00007f547af40424 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f547b7365fd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f5480f2e7c0 (LWP 9100)):
[KCrash Handler]
#6  0x00007f547b680528 in raise () from /lib64/libc.so.6
#7  0x00007f547b68197a in abort () from /lib64/libc.so.6
#8  0x00007f547bdfbd49 in qt_message_fatal (context=..., message=<synthetic pointer>) at global/qlogging.cpp:1578
#9  QMessageLogger::fatal (this=this@entry=0x7fffa7f1f440, msg=msg@entry=0x7f547f115c6c "%s") at global/qlogging.cpp:781
#10 0x00007f547ef938c1 in QSGRenderLoop::handleContextCreationFailure (this=this@entry=0x1618980, window=0x198fbc0, isEs=isEs@entry=false) at scenegraph/qsgrenderloop.cpp:244
#11 0x00007f547ef9c122 in QSGThreadedRenderLoop::handleExposure (this=this@entry=0x1618980, window=window@entry=0x198fbc0) at scenegraph/qsgthreadedrenderloop.cpp:919
#12 0x00007f547ef9c523 in QSGThreadedRenderLoop::exposureChanged (this=0x1618980, window=0x198fbc0) at scenegraph/qsgthreadedrenderloop.cpp:857
#13 0x00007f547c2dc305 in QWindow::event (this=this@entry=0x198fbc0, ev=ev@entry=0x7fffa7f1f900) at kernel/qwindow.cpp:2054
#14 0x00007f547efcecd1 in QQuickWindow::event (this=this@entry=0x198fbc0, e=e@entry=0x7fffa7f1f900) at items/qquickwindow.cpp:1413
#15 0x000000000043e796 in DesktopView::event (this=0x198fbc0, e=0x7fffa7f1f900) at /var/tmp/portage/kde-plasma/plasma-workspace-5.5.4/work/plasma-workspace-5.5.4/shell/desktopview.cpp:205
#16 0x00007f547c9f492c in QApplicationPrivate::notify_helper (this=this@entry=0x143e1e0, receiver=receiver@entry=0x198fbc0, e=e@entry=0x7fffa7f1f900) at kernel/qapplication.cpp:3716
#17 0x00007f547c9f9dae in QApplication::notify (this=0x7fffa7f1fd30, receiver=0x198fbc0, e=0x7fffa7f1f900) at kernel/qapplication.cpp:3499
#18 0x00007f547bfaf80d in QCoreApplication::notifyInternal (this=0x7fffa7f1fd30, receiver=receiver@entry=0x198fbc0, event=event@entry=0x7fffa7f1f900) at kernel/qcoreapplication.cpp:965
#19 0x00007f547c2d4b8c in QCoreApplication::sendSpontaneousEvent (event=0x7fffa7f1f900, receiver=0x198fbc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#20 QGuiApplicationPrivate::processExposeEvent (e=0x192f180) at kernel/qguiapplication.cpp:2648
#21 0x00007f547c2d58ed in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x192f180) at kernel/qguiapplication.cpp:1643
#22 0x00007f547c2bda08 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#23 0x00007f5471ac9ef0 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#24 0x00007f54775a0d57 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#25 0x00007f54775a0fb0 in ?? () from /usr/lib64/libglib-2.0.so.0
#26 0x00007f54775a105c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#27 0x00007f547bffc6ff in QEventDispatcherGlib::processEvents (this=0x147d070, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#28 0x00007f547bfae6fa in QEventLoop::exec (this=this@entry=0x7fffa7f1fbd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#29 0x00007f547bfb589c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#30 0x00007f547c2caf8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1527
#31 0x00007f547c9f0d65 in QApplication::exec () at kernel/qapplication.cpp:2976
#32 0x000000000043228a in main (argc=4, argv=<optimized out>) at /var/tmp/portage/kde-plasma/plasma-workspace-5.5.4/work/plasma-workspace-5.5.4/shell/main.cpp:181

Possible duplicates by query: bug 358762, bug 357226, bug 356175, bug 356017, bug 354966.

Reported using DrKonqi