Bug 357717

Application: plasmashell (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-23-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
Opening an application from the Application Menu.  No idea how or why it happened.

-- 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 0x7fa5323d7800 (LWP 2071))]

Thread 6 (Thread 0x7fa516fca700 (LWP 2091)):
#0  __GI___pthread_getspecific (key=3) at pthread_getspecific.c:32
#1  0x00007fa529909e10 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5298e32ed in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa52d46a50b in QEventDispatcherGlib::processEvents (this=0x7fa5100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa52d41150a in QEventLoop::exec (this=this@entry=0x7fa516fc9da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa52d22dac4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa52faa1c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa52d232a6e in QThreadPrivate::start (arg=0x123e970) at thread/qthread_unix.cpp:331
#8  0x00007fa52c31e6aa in start_thread (arg=0x7fa516fca700) at pthread_create.c:333
#9  0x00007fa52cb47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa50bbb9700 (LWP 2109)):
#0  0x00007fa52cb3c8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa5298e31ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5298e32fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa52d46a50b in QEventDispatcherGlib::processEvents (this=0x7fa5040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa52d41150a in QEventLoop::exec (this=this@entry=0x7fa50bbb8da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa52d22dac4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa52faa1c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa52d232a6e in QThreadPrivate::start (arg=0x1566ae0) at thread/qthread_unix.cpp:331
#8  0x00007fa52c31e6aa in start_thread (arg=0x7fa50bbb9700) at pthread_create.c:333
#9  0x00007fa52cb47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa509b6e700 (LWP 2114)):
#0  0x00007fa52d2e2ff2 in qt_gettime () at tools/qelapsedtimer_unix.cpp:163
#1  0x00007fa52d467f99 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa4fc002ed0) at kernel/qtimerinfo_unix.cpp:84
#2  0x00007fa52d468505 in QTimerInfoList::timerWait (this=0x7fa4fc002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#3  0x00007fa52d4698ee in timerSourcePrepareHelper (timeout=0x7fa509b6dbe4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#4  timerSourcePrepare (source=<optimized out>, timeout=0x7fa509b6dbe4) at kernel/qeventdispatcher_glib.cpp:160
#5  0x00007fa5298e277d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa5298e311b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fa5298e32fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fa52d46a50b in QEventDispatcherGlib::processEvents (this=0x7fa4fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#9  0x00007fa52d41150a in QEventLoop::exec (this=this@entry=0x7fa509b6dda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007fa52d22dac4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#11 0x00007fa52faa1c35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fa52d232a6e in QThreadPrivate::start (arg=0x163b020) at thread/qthread_unix.cpp:331
#13 0x00007fa52c31e6aa in start_thread (arg=0x7fa509b6e700) at pthread_create.c:333
#14 0x00007fa52cb47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa503fff700 (LWP 2119)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa531e31194 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fa531e311d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fa52c31e6aa in start_thread (arg=0x7fa503fff700) at pthread_create.c:333
#4  0x00007fa52cb47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa46dc74700 (LWP 2294)):
#0  0x00007fa52cb3c8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa5298e31ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5298e32fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa52d46a50b in QEventDispatcherGlib::processEvents (this=0x7fa4680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa52d41150a in QEventLoop::exec (this=this@entry=0x7fa46dc73d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa52d22dac4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa46ff0b8f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fa52d232a6e in QThreadPrivate::start (arg=0x3369f80) at thread/qthread_unix.cpp:331
#8  0x00007fa52c31e6aa in start_thread (arg=0x7fa46dc74700) at pthread_create.c:333
#9  0x00007fa52cb47eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa5323d7800 (LWP 2071)):
[KCrash Handler]
#6  0x00007fa52f9e3cef in QV4::QObjectWrapper::wrap(QV4::ExecutionEngine*, QObject*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa52f967d84 in QV4::ExecutionEngine::fromVariant(QVariant const&) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa52f9ebad0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fa52d442777 in QtPrivate::QSlotObjectBase::call (a=0x7ffe261c1c70, r=0x1161bd0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0x1161bd0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe261c1c70) at kernel/qobject.cpp:3698
#11 0x00007fa52d4430e7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7fa4799e8800 <WindowSystem::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe261c1c70) at kernel/qobject.cpp:3578
#12 0x00007fa4797d2e42 in WindowSystem::focusOut (_t1=0x4186980, this=<optimized out>) at moc_windowsystem.cpp:171
#13 WindowSystem::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_windowsystem.cpp:103
#14 0x00007fa52d4437b1 in QObject::event (this=0x1161bd0, e=<optimized out>) at kernel/qobject.cpp:1239
#15 0x00007fa52df189dc in QApplicationPrivate::notify_helper (this=this@entry=0x1165390, receiver=receiver@entry=0x1161bd0, e=e@entry=0x5402430) at kernel/qapplication.cpp:3716
#16 0x00007fa52df1dea6 in QApplication::notify (this=0x7ffe261c2340, receiver=0x1161bd0, e=0x5402430) at kernel/qapplication.cpp:3499
#17 0x00007fa52d413d7b in QCoreApplication::notifyInternal (this=0x7ffe261c2340, receiver=0x1161bd0, event=event@entry=0x5402430) at kernel/qcoreapplication.cpp:965
#18 0x00007fa52d416176 in QCoreApplication::sendEvent (event=0x5402430, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x115b580) at kernel/qcoreapplication.cpp:1593
#20 0x00007fa52d416658 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#21 0x00007fa52d46a0e3 in postEventSourceDispatch (s=0x119b5c0) at kernel/qeventdispatcher_glib.cpp:271
#22 0x00007fa5298e2ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fa5298e3250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fa5298e32fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fa52d46a4ef in QEventDispatcherGlib::processEvents (this=0x11a3440, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#26 0x00007fa52d41150a in QEventLoop::exec (this=this@entry=0x7ffe261c21c0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#27 0x00007fa52d4195ec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#28 0x00007fa52d74dd1c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1530
#29 0x00007fa52df14e15 in QApplication::exec () at kernel/qapplication.cpp:2976
#30 0x00000000004322c3 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Reported using DrKonqi