Bug 355583

Application: plasmashell (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.6-300.fc23.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

Closed the laptop's lid while external monitors were connected.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb4c1257940 (LWP 8091))]

Thread 7 (Thread 0x7fb49a406700 (LWP 8096)):
#0  0x00007fb4b3de5734 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007fb4b3da0700 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fb4b3da109b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fb4b9aadf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fb4b9871424 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fb4bdb94b45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fb4b98763ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fb49196a700 (LWP 8097)):
#0  0x00007fb4b9aad1e0 in socketNotifierSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007fb4b3da070d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fb4b3da109b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fb4b9aadf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fb4b9871424 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fb4bdb94b45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fb4b98763ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fb48bdc7700 (LWP 8100)):
#0  0x00007fb4b9aabea7 in QTimerInfoList::repairTimersIfNeeded() () at /lib64/libQt5Core.so.5
#1  0x00007fb4b9aabf13 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#2  0x00007fb4b9aad2ee in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#3  0x00007fb4b3da070d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#4  0x00007fb4b3da109b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fb4b9aadf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007fb4b9871424 in QThread::exec() () at /lib64/libQt5Core.so.5
#9  0x00007fb4bdb94b45 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#10 0x00007fb4b98763ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#11 0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#12 0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fb48a519700 (LWP 8101)):
#0  0x00007fb4b791ab10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fb4c09da514 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007fb4c09da559 in  () at /lib64/libQt5Script.so.5
#3  0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#4  0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fb4029fc700 (LWP 8102)):
#0  0x00007fb4b8c6dfdd in poll () at /lib64/libc.so.6
#1  0x00007fb4b3da116c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fb4b9aadf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fb4b9871424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fb4be73e8d6 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007fb4b98763ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fb3f0677700 (LWP 8108)):
#0  0x00007fb4b8c6dfdd in poll () at /lib64/libc.so.6
#1  0x00007fb4b3da116c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fb4b9aadf0b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fb4b9871424 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fb3f22ad3c7 in KCupsConnection::run() () at /lib64/libkcupslib.so
#7  0x00007fb4b98763ce in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fb4b791560a in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb4b8c79a7d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fb4c1257940 (LWP 8091)):
[KCrash Handler]
#4  0x00007fb4a2f0955c in QXcbScreen::mapFromNative(QPoint const&) const () at /lib64/libQt5XcbQpa.so.5
#5  0x00007fb4a2f119aa in QXcbWindow::handleEnterNotifyEvent(xcb_enter_notify_event_t const*) () at /lib64/libQt5XcbQpa.so.5
#6  0x00007fb4a2efaafd in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /lib64/libQt5XcbQpa.so.5
#7  0x00007fb4a2efb433 in QXcbConnection::processXcbEvents() () at /lib64/libQt5XcbQpa.so.5
#8  0x00007fb4b9a871b1 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#9  0x00007fb4bb00b41c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#10 0x00007fb4bb0108e6 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#11 0x00007fb4b9a5777b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#12 0x00007fb4b9a59b76 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#13 0x00007fb4b9aadae3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#14 0x00007fb4b3da0e3a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#15 0x00007fb4b3da11d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#16 0x00007fb4b3da127c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#17 0x00007fb4b9aadeef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#18 0x00007fb4b9a54f0a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#19 0x00007fb4b9a5cfec in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#20 0x000055ac132a8363 in main ()

Possible duplicates by query: bug 355582.

Reported using DrKonqi