Bug 386916

Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-98-generic x86_64
Distribution: Ubuntu 16.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed: Logged in and did nothing else.  While dealing with my login, Plasma crashed.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6ccf7fc8c0 (LWP 1894))]

Thread 7 (Thread 0x7f6c094ad700 (LWP 2142)):
#0  0x00007f6cc6ceda94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6cc6ca8db9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6cc6ca9330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6cc6ca949c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6cca8427eb in QEventDispatcherGlib::processEvents (this=0x7f6c040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f6cca7e9b4a in QEventLoop::exec (this=this@entry=0x7f6c094accc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6cca606834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f6c0b98b7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f6cca60b7be in QThreadPrivate::start (arg=0x3243640) at thread/qthread_unix.cpp:331
#9  0x00007f6cc96f76ba in start_thread (arg=0x7f6c094ad700) at pthread_create.c:333
#10 0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f6c9bba5700 (LWP 1969)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6ccf253bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f6ccf253c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6cc96f76ba in start_thread (arg=0x7f6c9bba5700) at pthread_create.c:333
#4  0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f6ca1523700 (LWP 1964)):
#0  0x00007f6cc9f1570d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6cc6ca938c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6cc6ca949c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6cca8427eb in QEventDispatcherGlib::processEvents (this=0x7f6c940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f6cca7e9b4a in QEventLoop::exec (this=this@entry=0x7f6ca1522ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f6cca606834 in QThread::exec (this=this@entry=0x1c93670) at thread/qthread.cpp:503
#6  0x00007f6ccceae3c5 in QQmlThreadPrivate::run (this=0x1c93670) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f6cca60b7be in QThreadPrivate::start (arg=0x1c93670) at thread/qthread_unix.cpp:331
#8  0x00007f6cc96f76ba in start_thread (arg=0x7f6ca1523700) at pthread_create.c:333
#9  0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f6ca3390700 (LWP 1958)):
#0  0x00007f6cc96fe2e8 in __GI___pthread_getspecific (key=3) at pthread_getspecific.c:31
#1  0x00007f6cc6cd0060 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6cc6ca948d in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6cca8427eb in QEventDispatcherGlib::processEvents (this=0x7f6c9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f6cca7e9b4a in QEventLoop::exec (this=this@entry=0x7f6ca338fce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f6cca606834 in QThread::exec (this=this@entry=0x1912800) at thread/qthread.cpp:503
#6  0x00007f6ccceae3c5 in QQmlThreadPrivate::run (this=0x1912800) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f6cca60b7be in QThreadPrivate::start (arg=0x1912800) at thread/qthread_unix.cpp:331
#8  0x00007f6cc96f76ba in start_thread (arg=0x7f6ca3390700) at pthread_create.c:333
#9  0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6ca7c77700 (LWP 1957)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6cab62c74b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f6cab62c477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f6cc96f76ba in start_thread (arg=0x7f6ca7c77700) at pthread_create.c:333
#4  0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6cb3fff700 (LWP 1949)):
#0  0x00007f6cca603d5f in QBasicAtomicOps<8>::testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=@0x191ea48: 0x0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  QGenericAtomicOps<QBasicAtomicOps<8> >::testAndSetRelease<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=<optimized out>, _q_value=@0x191ea48: 0x0) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:175
#2  QBasicAtomicPointer<QMutexData>::testAndSetRelease (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=<optimized out>, this=this@entry=0x191ea48) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:278
#3  QBasicMutex::fastTryUnlock (current=<synthetic pointer>, this=this@entry=0x191ea48) at thread/qmutex.h:85
#4  QMutex::unlock (this=this@entry=0x191ea48) at thread/qmutex.cpp:264
#5  0x00007f6cca842055 in QMutexLocker::unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:138
#6  QMutexLocker::~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:132
#7  QThreadData::canWaitLocked (this=<optimized out>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:240
#8  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7f6cac0012d0) at kernel/qeventdispatcher_glib.cpp:254
#9  postEventSourceCheck (source=0x7f6cac0012d0) at kernel/qeventdispatcher_glib.cpp:264
#10 0x00007f6cc6ca8dc1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f6cc6ca9330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f6cc6ca949c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f6cca8427eb in QEventDispatcherGlib::processEvents (this=0x7f6cac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#14 0x00007f6cca7e9b4a in QEventLoop::exec (this=this@entry=0x7f6cb3ffece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007f6cca606834 in QThread::exec (this=this@entry=0x191e2c0) at thread/qthread.cpp:503
#16 0x00007f6ccceae3c5 in QQmlThreadPrivate::run (this=0x191e2c0) at qml/ftw/qqmlthread.cpp:141
#17 0x00007f6cca60b7be in QThreadPrivate::start (arg=0x191e2c0) at thread/qthread_unix.cpp:331
#18 0x00007f6cc96f76ba in start_thread (arg=0x7f6cb3fff700) at pthread_create.c:333
#19 0x00007f6cc9f213dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6ccf7fc8c0 (LWP 1894)):
[KCrash Handler]
#6  0x00007f6cccee45e0 in QAbstractAnimationJob::setState (this=0x345c1e0, newState=newState@entry=QAbstractAnimationJob::Stopped) at animations/qabstractanimationjob.cpp:346
#7  0x00007f6cccee4877 in QAbstractAnimationJob::stop (this=<optimized out>) at animations/qabstractanimationjob.cpp:530
#8  0x00007f6ccd857291 in QQuickAnimatorController::stopProxyJobs (this=0x2a43a70) at util/qquickanimatorcontroller.cpp:243
#9  0x00007f6cca81ad2a in QMetaObject::activate (sender=0x2a450d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3713
#10 0x00007f6cca81b537 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f6ccdaf0260 <QQuickWindow::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3578
#11 0x00007f6ccd8cee20 in QQuickWindow::frameSwapped (this=<optimized out>) at .moc/moc_qquickwindow.cpp:429
#12 0x00007f6ccd8a2517 in QQuickWindowPrivate::fireFrameSwapped (this=0x2a451d0) at ../../include/QtQuick/5.5.1/QtQuick/private/../../../../../src/quick/items/qquickwindow_p.h:212
#13 QSGGuiThreadRenderLoop::renderWindow (this=this@entry=0x1a40c50, window=0x2a450d0) at scenegraph/qsgrenderloop.cpp:392
#14 0x00007f6ccd8a3aa6 in QSGGuiThreadRenderLoop::exposureChanged (this=0x1a40c50, window=0x2a450d0) at scenegraph/qsgrenderloop.cpp:422
#15 0x00007f6ccab372b5 in QWindow::event (this=this@entry=0x2a450d0, ev=ev@entry=0x7ffd8b9b5bd0) at kernel/qwindow.cpp:2060
#16 0x00007f6ccd8dd871 in QQuickWindow::event (this=this@entry=0x2a450d0, e=e@entry=0x7ffd8b9b5bd0) at items/qquickwindow.cpp:1413
#17 0x0000000000444a8b in PanelView::event (this=0x2a450d0, e=0x7ffd8b9b5bd0) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/panelview.cpp:844
#18 0x00007f6ccb2ef05c in QApplicationPrivate::notify_helper (this=this@entry=0x182f700, receiver=receiver@entry=0x2a450d0, e=e@entry=0x7ffd8b9b5bd0) at kernel/qapplication.cpp:3716
#19 0x00007f6ccb2f4516 in QApplication::notify (this=0x7ffd8b9b5ff0, receiver=0x2a450d0, e=0x7ffd8b9b5bd0) at kernel/qapplication.cpp:3499
#20 0x00007f6cca7ec38b in QCoreApplication::notifyInternal (this=0x7ffd8b9b5ff0, receiver=receiver@entry=0x2a450d0, event=event@entry=0x7ffd8b9b5bd0) at kernel/qcoreapplication.cpp:965
#21 0x00007f6ccab2f4ac in QCoreApplication::sendSpontaneousEvent (event=0x7ffd8b9b5bd0, receiver=0x2a450d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#22 QGuiApplicationPrivate::processExposeEvent (e=0x34a9550) at kernel/qguiapplication.cpp:2663
#23 0x00007f6ccab3021d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x34a9550) at kernel/qguiapplication.cpp:1658
#24 0x00007f6ccab13f08 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#25 0x00007f6cbcc95200 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#26 0x00007f6cc6ca9197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f6cc6ca93f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f6cc6ca949c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f6cca8427cf in QEventDispatcherGlib::processEvents (this=0x187ad20, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#30 0x00007f6cca7e9b4a in QEventLoop::exec (this=this@entry=0x7ffd8b9b5e90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#31 0x00007f6cca7f1bec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#32 0x00007f6ccab25bfc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#33 0x00007f6ccb2eb495 in QApplication::exec () at kernel/qapplication.cpp:2976
#34 0x0000000000432d4a in main (argc=2, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Possible duplicates by query: bug 367761, bug 366846, bug 357101, bug 356049.

Reported using DrKonqi