Bug 361506

Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.5.0-040500-lowlatency x86_64
Distribution: Ubuntu Xenial Xerus (development branch)

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

The computer was left unused and when I came back plasma had 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 0x7f3ae56e38c0 (LWP 31964))]

Thread 7 (Thread 0x7f3ad0a06700 (LWP 31967)):
#0  0x00007f3adfdfe5ad in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3ae3ec3c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f3ae3ec58d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f3ad2b524a9 in QXcbEventReader::run() (this=0x21af8a0) at qxcbconnection.cpp:1253
#4  0x00007f3ae04f47fe in QThreadPrivate::start(void*) (arg=0x21af8a0) at thread/qthread_unix.cpp:331
#5  0x00007f3adf5e06fa in start_thread (arg=0x7f3ad0a06700) at pthread_create.c:333
#6  0x00007f3adfe0a2dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f3ac2919700 (LWP 31969)):
#0  0x00007f3adcbd8a94 in g_mutex_unlock (mutex=0x7f3abc000990) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gthread-posix.c:1350
#1  0x00007f3adcb93d59 in g_main_context_check (context=context@entry=0x7f3abc000990, max_priority=2147483647, fds=fds@entry=0x7f3abc003070, n_fds=n_fds@entry=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3679
#2  0x00007f3adcb942d0 in g_main_context_iterate (context=context@entry=0x7f3abc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3837
#3  0x00007f3adcb9443c in g_main_context_iteration (context=0x7f3abc000990, may_block=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007f3ae072ba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3abc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f3ae06d2d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3ac2918ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:200
#6  0x00007f3ae04ef854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f3ae2d973b5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f3ae04f47fe in QThreadPrivate::start(void*) (arg=0x23f2780) at thread/qthread_unix.cpp:331
#9  0x00007f3adf5e06fa in start_thread (arg=0x7f3ac2919700) at pthread_create.c:333
#10 0x00007f3adfe0a2dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f3ab73a0700 (LWP 31970)):
#0  0x00007f3adcbd8a94 in g_mutex_unlock (mutex=0x7f3ab0000990) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gthread-posix.c:1350
#1  0x00007f3adcb93cea in g_main_context_check (context=context@entry=0x7f3ab0000990, max_priority=2147483647, fds=fds@entry=0x7f3ab00027d0, n_fds=n_fds@entry=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3748
#2  0x00007f3adcb942d0 in g_main_context_iterate (context=context@entry=0x7f3ab0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3837
#3  0x00007f3adcb9443c in g_main_context_iteration (context=0x7f3ab0000990, may_block=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007f3ae072ba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3ab00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f3ae06d2d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3ab739fce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:200
#6  0x00007f3ae04ef854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f3ae2d973b5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f3ae04f47fe in QThreadPrivate::start(void*) (arg=0x270adb0) at thread/qthread_unix.cpp:331
#9  0x00007f3adf5e06fa in start_thread (arg=0x7f3ab73a0700) at pthread_create.c:333
#10 0x00007f3adfe0a2dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f3ab5449700 (LWP 31971)):
#0  0x00007f3ae072ad30 in QList<QAbstractEventDispatcher::TimerInfo>::append(QAbstractEventDispatcher::TimerInfo const&) (this=<optimized out>, t=...) at ../../include/QtCore/../../src/corelib/tools/qlist.h:556
#1  0x00007f3ab5448b24 in  ()
#2  0x00007f3ab5448bb0 in  ()
#3  0xffffffff00000000 in  ()#4  0x00007f3aa8002c00 in  ()
#5  0x00007f3aa8000990 in  ()
#6  0x00007f3a00000001 in  ()
#7  0x00007f3ab0002380 in  ()
#8  0x00007f3aa8002c00 in  ()
#9  0x0000000000000000 in  ()

Thread 3 (Thread 0x7f3aaf9c4700 (LWP 31972)):
#0  0x00007f3adf5e63b0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3ae513cbd4 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f3ae5224ee0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f3ae513cc19 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f3adf5e06fa in start_thread (arg=0x7f3aaf9c4700) at pthread_create.c:333
#4  0x00007f3adfe0a2dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3aad0f0700 (LWP 31975)):
#0  0x00007f3adcbd8a79 in g_mutex_lock (mutex=mutex@entry=0x7f3a24000990) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gthread-posix.c:1338
#1  0x00007f3adcb93ae1 in g_main_context_query (context=context@entry=0x7f3a24000990, max_priority=2147483647, timeout=timeout@entry=0x7f3aad0efb64, fds=fds@entry=0x7f3a24002f20, n_fds=n_fds@entry=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3544
#2  0x00007f3adcb942a7 in g_main_context_iterate (context=context@entry=0x7f3a24000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3822
#3  0x00007f3adcb9443c in g_main_context_iteration (context=0x7f3a24000990, may_block=1) at /build/glib2.0-VLj5wM/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007f3ae072ba5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3a240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f3ae06d2d6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3aad0efc90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:200
#6  0x00007f3ae04ef854 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f3ae371ded6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f3ae04f47fe in QThreadPrivate::start(void*) (arg=0x2a15200) at thread/qthread_unix.cpp:331
#9  0x00007f3adf5e06fa in start_thread (arg=0x7f3aad0f0700) at pthread_create.c:333
#10 0x00007f3adfe0a2dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3ae56e38c0 (LWP 31964)):
[KCrash Handler]
#6  0x00007f3ae3c3b420 in Plasma::Applet::actions() const () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#7  0x00000000004559b2 in ShellCorona::addOutput(QSharedPointer<KScreen::Output> const&) (this=this@entry=0x23de2a0, output=...) at ../../shell/shellcorona.cpp:905
#8  0x0000000000455b4f in ShellCorona::outputEnabledChanged() (this=0x23de2a0) at ../../shell/shellcorona.cpp:799
#9  0x00007f3ae0703e0f in QMetaObject::activate(QObject*, int, int, void**) (sender=0x239af50, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3696
#10 0x00007f3ae48bcc59 in KScreen::Output::apply(QSharedPointer<KScreen::Output> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#11 0x00007f3ae48ac5d5 in KScreen::Config::apply(QSharedPointer<KScreen::Config> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#12 0x00007f3ae48b1cc9 in KScreen::ConfigMonitor::Private::updateConfigs(QSharedPointer<KScreen::Config> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#13 0x00007f3ae48b38ad in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () at /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#14 0x00007f3ae0703e0f in QMetaObject::activate(QObject*, int, int, void**) (sender=0x55e2f80, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf2414ac0) at kernel/qobject.cpp:3696
#15 0x00007f3ae07047b7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f3ae58846a0 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf2414ac0) at kernel/qobject.cpp:3578
#16 0x00007f3ae5869f6f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) (this=<optimized out>, _t1=0x55e2f80) at .moc/moc_qdbuspendingcall.cpp:148
#17 0x00007f3ae586b645 in QDBusPendingCallWatcher::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (this=<optimized out>) at qdbuspendingcall.cpp:488
#18 0x00007f3ae586b645 in QDBusPendingCallWatcher::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:80
#19 0x00007f3ae0704e61 in QObject::event(QEvent*) (signal_absolute_id=<optimized out>, sender=<optimized out>, receiver=0x55e2f80, this=0x7ffdf2414b50) at kernel/qobject.cpp:158
#20 0x00007f3ae0704e61 in QObject::event(QEvent*) (signal_absolute_id=<optimized out>, sender=<optimized out>, receiver=0x55e2f80, this=0x7ffdf2414b50) at kernel/qobject.cpp:151
#21 0x00007f3ae0704e61 in QObject::event(QEvent*) (this=0x55e2f80, e=0x0) at kernel/qobject.cpp:1237
#22 0x00007f3ae11d805c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x2198540, receiver=receiver@entry=0x55e2f80, e=e@entry=0x54ea040) at kernel/qapplication.cpp:3716
#23 0x00007f3ae11dd516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdf24151b0, receiver=0x55e2f80, e=0x54ea040) at kernel/qapplication.cpp:3499
#24 0x00007f3ae06d55ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (event=0x54ea040, receiver=0x55e2f80, this=0x7ffdf24151b0) at kernel/qcoreapplication.cpp:1038
#25 0x00007f3ae06d55ab in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffdf24151b0, receiver=0x55e2f80, event=0x54ea040) at kernel/qcoreapplication.cpp:965
#26 0x00007f3ae06d79a6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:136
#27 0x00007f3ae06d79a6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (m=<synthetic pointer>, this=<synthetic pointer>) at kernel/qcoreapplication.cpp:1585
#28 0x00007f3ae06d79a6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x218e600) at kernel/qcoreapplication.cpp:1588
#29 0x00007f3ae072b633 in QEventDispatcherGlibPrivate::runTimersOnceWithNormalPriority() (this=0x0) at kernel/qeventdispatcher_glib.cpp:349
#30 0x0000000000000000 in  ()

Possible duplicates by query: bug 361247, bug 360912, bug 360591, bug 360346, bug 360282.

Reported using DrKonqi