Bug 352600

Application: plasmashell (5.4.0)

Qt Version: 5.5.0
Operating System: Linux 4.2.0-300.fc23.x86_64 x86_64
Distribution: "Fedora release 23 (Twenty Three)"

-- Information about the crash:
- What I was doing when the application crashed:
I disconnneted my external monitor, and reset the proper resolution of my laptop, and then plasma crashed. The resolution reset also suceeded.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f63fa74a940 (LWP 1948))]

Thread 9 (Thread 0x7f63da4dd700 (LWP 1954)):
#0  0x00007f63f21cf11d in poll () at /lib64/libc.so.6
#1  0x00007f63f8605182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f63f8606c77 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f63dc461999 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#6  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f63d39d5700 (LWP 1960)):
#0  0x00007f63f21cf11d in poll () at /lib64/libc.so.6
#1  0x00007f63ed30a27c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f63f300ddab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f63f2dd15a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f63f709c245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f63ca0e9700 (LWP 2191)):
#0  0x00007f63f0e7fb10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f63d159bd9a in radeon_drm_cs_emit_ioctl () at /usr/lib64/dri/r600_dri.so
#2  0x00007f63d159b4d7 in impl_thrd_routine () at /usr/lib64/dri/r600_dri.so
#3  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f63c7dff700 (LWP 2332)):
#0  0x00007f63f300d316 in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007f63ed30981d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f63ed30a1ab in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f63f300ddab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f63f2dd15a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f63f709c245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f63c61b2700 (LWP 2348)):
#0  0x00007f63ed34ed20 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f63ed30a236 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f63f300ddab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f63f2dd15a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f63f709c245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f63c485e700 (LWP 2360)):
#0  0x00007f63f0e7fb10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f63f9ed5494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f63f9ed54d9 in  () at /lib64/libQt5Script.so.5
#3  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f63bdc51700 (LWP 2378)):
#0  0x00007f63ed309815 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007f63ed30a1ab in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f63f300ddab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f63f2dd15a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f63f7c3e616 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f6329fa0700 (LWP 2417)):
#0  0x00007f63ed34ed14 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f63ed309810 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f63ed30a1ab in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f63f300ddab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f63f2dd15a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f632bbd63c7 in KCupsConnection::run() () at /lib64/libkcupslib.so
#8  0x00007f63f2dd654e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f63f0e7a60a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f63f21dabbd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f63fa74a940 (LWP 1948)):
[KCrash Handler]
#5  0x00007f63f836c3a0 in Plasma::Applet::actions() const () at /lib64/libKF5Plasma.so.5
#6  0x0000562816da9209 in ShellCorona::addOutput(QSharedPointer<KScreen::Output> const&) ()
#7  0x0000562816da9666 in ShellCorona::reconsiderOutputs() ()
#8  0x00007f63f2fe5fe7 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#9  0x00007f63f2ff2a38 in QTimer::timerEvent(QTimerEvent*) () at /lib64/libQt5Core.so.5
#10 0x00007f63f2fe6fd3 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#11 0x00007f63f456d4ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#12 0x00007f63f4572976 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#13 0x00007f63f2fb761b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#14 0x00007f63f300cbad in QTimerInfoList::activateTimers() () at /lib64/libQt5Core.so.5
#15 0x00007f63f300d0b1 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#16 0x00007f63ed309f4a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#17 0x00007f63ed30a2e0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#18 0x00007f63ed30a38c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#19 0x00007f63f300dd8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#20 0x00007f63f2fb4daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#21 0x00007f63f2fbce6c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#22 0x0000562816d841d3 in main ()

Reported using DrKonqi