Bug 379757

Application: plasma-discover (5.9.4)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-20-generic x86_64
Distribution: Ubuntu 17.04

-- Information about the crash:
- What I was doing when the application crashed:
I opened the program to check to install another program and suddenly it closed.

NOTE: This is not the first time the program closes alone. You open the program between 4-7 minutes and close, regardless of what you do

The crash can be reproduced sometimes.

-- Backtrace:
Application: Descubrir (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6af68a08c0 (LWP 17622))]

Thread 8 (Thread 0x7f6a93fff700 (LWP 19186)):
#0  0x00007f6aeec2e8b9 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f6af284ea86 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6af284a2b2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6aeec286da in start_thread (arg=0x7f6a93fff700) at pthread_create.c:456
#5  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f6ab0df6700 (LWP 17641)):
#0  0x00007f6aecaf6cc9 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6aecaf74e8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6af2a71f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6af2848fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6aeec286da in start_thread (arg=0x7f6ab0df6700) at pthread_create.c:456
#8  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f6ac2884700 (LWP 17632)):
#0  0x00007f6af1e4518d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aecaf7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6af2a71f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6af2848fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6aeec286da in start_thread (arg=0x7f6ac2884700) at pthread_create.c:456
#8  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f6ad34bb700 (LWP 17630)):
#0  0x00007f6aecaf6a4b in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6aecaf749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6af2a71f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6af2848fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6af5c254c6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6aeec286da in start_thread (arg=0x7f6ad34bb700) at pthread_create.c:456
#9  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f6ad99c3700 (LWP 17626)):
#0  0x00007f6af1e40cad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aecb3bb30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6aecaf7042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6aecaf7514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6af2a71f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6af2848fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6af33d2df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f6aeec286da in start_thread (arg=0x7f6ad99c3700) at pthread_create.c:456
#11 0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f6adabd4700 (LWP 17625)):
#0  0x00007f6af1e4518d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aecaf7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6af2a71f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6af2848fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6af46a75c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6aeec286da in start_thread (arg=0x7f6adabd4700) at pthread_create.c:456
#9  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f6ae3386700 (LWP 17624)):
#0  0x00007f6af1e4518d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6aec68cc62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6aec68e8d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6ae58dded9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f6af284dc98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6aeec286da in start_thread (arg=0x7f6ae3386700) at pthread_create.c:456
#6  0x00007f6af1e5117f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f6af68a08c0 (LWP 17622)):
[KCrash Handler]
#6  0x00007f6af5ca6234 in QQuickItem::isVisible() const () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f6af5ca66a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f6af5caf4a3 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f6af5caf6e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f6af3f8735c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f6af3f8eb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f6af2a1d8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f6af5ca66c9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f6af5caf4a3 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f6af5caf6e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f6af3f8735c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f6af3f8eb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f6af2a1d8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f6af5ca66c9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f6af5caf4a3 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f6af5caf6e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f6af3f8735c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f6af3f8eb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f6af2a1d8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f6af5ca66c9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f6af5caf4a3 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f6af5caf6e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f6af3f8735c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f6af3f8eb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f6af2a1d8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f6af5cc2143 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f6af5cc246f in QQuickWindow::keyPressEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f6af37ff475 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f6af5cca245 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f6af3f8735c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f6af3f8eb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f6af2a1d8a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f6af37efd18 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f6af37f5285 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f6af37d323b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f6ae5914830 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f6aecaf7377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f6aecaf75e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f6aecaf768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f6af2a71f0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007f6af2a1b88a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f6af2a23ffc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x0000558c8f4cab16 in  ()
#49 0x00007f6af1d693f1 in __libc_start_main (main=0x558c8f4ca410, argc=1, argv=0x7ffdd1528768, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdd1528758) at ../csu/libc-start.c:291
#50 0x0000558c8f4cad5a in _start ()

Reported using DrKonqi