Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-21-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I selected the LibreOffice Writer icon from the default application launcher / applications / Office, to an empty panel that i just had created on the top of the screen.
- Custom settings of the application:
The empty panel has the auto hide option active and the crash occured before the panel was visible. I selected the icon, I moved the mouse cursor to the top of the screen, and before dropping it, Plasma crashes.

The crash can be reproduced every time.

-- 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 0x7f5b848c58c0 (LWP 6233))]

Thread 9 (Thread 0x7f5b6fad3700 (LWP 6235)):
#0  0x00007f5b7efc8e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5b8308dc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f5b8308f8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f5b71c21629 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b6fad3700) at pthread_create.c:333
#6  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f5b6d2c5700 (LWP 6238)):
#0  0x00007f5b7bd5d898 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5b7bd5e24b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5b7f8f5a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5b7f6b98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5b81f613c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b6d2c5700) at pthread_create.c:333
#9  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f5b6526e700 (LWP 6239)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5b667d3213 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f5b667d2937 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b6526e700) at pthread_create.c:333
#4  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f5b59e85700 (LWP 6241)):
#0  0x00007f5b7efc8e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5b7bd5e31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5b7f8f5a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5b7f6b98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5b81f613c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b59e85700) at pthread_create.c:333
#9  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f5b53fff700 (LWP 6242)):
#0  0x00007f5b7bd5e31e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5b7f8f5a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5b7f6b98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5b81f613c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b53fff700) at pthread_create.c:333
#8  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f5b527bb700 (LWP 6243)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5b84306bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f5b84306c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5b527bb700) at pthread_create.c:333
#4  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f5abef1d700 (LWP 6249)):
#0  0x00007ffde3d399a9 in ?? ()
#1  0x00007ffde3d39cd5 in clock_gettime ()
#2  0x00007f5b7efe2fb6 in __GI___clock_gettime (clock_id=1, tp=0x7f5abef1ca90) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f5b7f76ec16 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5b7f8f3529 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5b7f8f5262 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5b7bd5dd51 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f5b7bd5e2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f5b7f8f5a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f5b7f6b98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5ac13fd7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#13 0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f5b7e7ab6fa in start_thread (arg=0x7f5abef1d700) at pthread_create.c:333
#15 0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f5ab235f700 (LWP 6267)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f5b7f6bfa26 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5b7f6bb4d3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5b7f6be84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5b7e7ab6fa in start_thread (arg=0x7f5ab235f700) at pthread_create.c:333
#5  0x00007f5b7efd4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f5b848c58c0 (LWP 6233)):
[KCrash Handler]
#6  0x00007f5b71c30d80 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#7  0x00007f5b7fbd5629 in QBasicDrag::eventFilter(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#8  0x00007f5b7f89f2f2 in QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5b803a1fe8 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f5b803a7516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f5b7f89f62b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5b7fbe1521 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f5b7fbe31e5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007f5b7fbc6f38 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f5b71c52f10 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#16 0x00007f5b7bd5e127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f5b7bd5e380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f5b7f8f5a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f5b7fbd59e2 in QBasicDrag::drag(QDrag*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f5b7fbee559 in QDragManager::drag(QDrag*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007f5b7fbed937 in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007f5acb25d405 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#25 0x00007f5acb277a54 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#26 0x00007f5b7f8ceea1 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f5b803a205c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f5b803a7516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f5b7f89f62b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f5b7f8a1a26 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f5b7f8f5673 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f5b7bd5e127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f5b7bd5e380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f5b7bd5e42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f5b7f8f5a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f5b7f89cdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f5b7f8a4e8c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x0000000000432d4a in main ()

Possible duplicates by query: bug 362182, bug 359490, bug 358871, bug 355491, bug 355038.

Reported using DrKonqi