Application: plasmashell (5.12.7)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-48-generic x86_64
Distribution: Ubuntu 18.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:
nothing, only login

I'm using Kubuntu 18.04. I installed latte-dock and the crashes begin at the same time (I'm not sure It's correlated). After i removed latte-dock the crashes stopped for some time or they were erratic. Now plasma crashes everytime.

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 0x7f4d3b75e800 (LWP 1319))]

Thread 14 (Thread 0x7f4c48992700 (LWP 2526)):
#0  0x00007f4d345c69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c617a4f630) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d345c69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55c617a4f5e0, cond=0x55c617a4f608) at pthread_cond_wait.c:502
#2  0x00007f4d345c69f3 in __pthread_cond_wait (cond=0x55c617a4f608, mutex=0x55c617a4f5e0) at pthread_cond_wait.c:655
#3  0x00007f4d354405ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d391c56a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4d391c5b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4c48992700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f4c49393700 (LWP 2516)):
#0  0x00007f4d345c69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c616edf410) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d345c69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55c616edf3c0, cond=0x55c616edf3e8) at pthread_cond_wait.c:502
#2  0x00007f4d345c69f3 in __pthread_cond_wait (cond=0x55c616edf3e8, mutex=0x55c616edf3c0) at pthread_cond_wait.c:655
#3  0x00007f4d354405ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d391c56a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4d391c5b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4c49393700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f4c4b679700 (LWP 2452)):
#0  0x00007f4d3543e001 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f4d35676db1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f4d2f896f51 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d2f8974e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4c4bd42747 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f4d345c06db in start_thread (arg=0x7f4c4b679700) at pthread_create.c:463
#11 0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f4c7bfff700 (LWP 2333)):
#0  0x00007f4d345c69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c617131a74) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d345c69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55c617131a20, cond=0x55c617131a48) at pthread_cond_wait.c:502
#2  0x00007f4d345c69f3 in __pthread_cond_wait (cond=0x55c617131a48, mutex=0x55c617131a20) at pthread_cond_wait.c:655
#3  0x00007f4d354405ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d391c56a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4d391c5b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4c7bfff700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f4c5d870700 (LWP 2305)):
#0  0x00007f4d345c69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c61718f1d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d345c69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55c61718f180, cond=0x55c61718f1a8) at pthread_cond_wait.c:502
#2  0x00007f4d345c69f3 in __pthread_cond_wait (cond=0x55c61718f1a8, mutex=0x55c61718f180) at pthread_cond_wait.c:655
#3  0x00007f4d354405ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d391c56a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4d391c5b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4c5d870700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f4c5ffff700 (LWP 2234)):
#0  0x00007f4d34d2dbf9 in __GI___poll (fds=0x7f4c58003ce0, nfds=1, timeout=10163) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4d2f897539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4c5ffff700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f4c64854700 (LWP 2231)):
#0  0x00007f4d2f8dbca1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4d2f897027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4d2f8974e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4c64e653c5 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#8  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4d345c06db in start_thread (arg=0x7f4c64854700) at pthread_create.c:463
#10 0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f4c81874700 (LWP 1619)):
#0  0x00007f4d34d2dbb7 in __GI___poll (fds=0x7f4c7c005840, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4d2f897539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d391462a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4d345c06db in start_thread (arg=0x7f4c81874700) at pthread_create.c:463
#9  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4d151ce700 (LWP 1484)):
#0  0x00007f4d345c69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4d3b11bfb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d345c69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4d3b11bf68, cond=0x7f4d3b11bf90) at pthread_cond_wait.c:502
#2  0x00007f4d345c69f3 in __pthread_cond_wait (cond=0x7f4d3b11bf90, mutex=0x7f4d3b11bf68) at pthread_cond_wait.c:655
#3  0x00007f4d3ae255f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f4d3ae25639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f4d345c06db in start_thread (arg=0x7f4d151ce700) at pthread_create.c:463
#6  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4d17395700 (LWP 1418)):
#0  0x00007f4d2f8dd049 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4d2f89751f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d385ac6f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4d345c06db in start_thread (arg=0x7f4d17395700) at pthread_create.c:463
#9  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4d1d4d1700 (LWP 1415)):
#0  0x00007f4d2f8dd064 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4d2f897656 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d385ac6f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d345c06db in start_thread (arg=0x7f4d1d4d1700) at pthread_create.c:463
#8  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4d1ef16700 (LWP 1341)):
#0  0x00007f4d354369ac in QMutex::lock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f4d35676dcb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f4d2f896f51 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d2f8974e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4d356769bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d3543a23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4d35af3d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f4d345c06db in start_thread (arg=0x7f4d1ef16700) at pthread_create.c:463
#11 0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4d254be700 (LWP 1335)):
#0  0x00007f4d34d2dbf9 in __GI___poll (fds=0x7f4d254bdca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4d39d52747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4d39d5436a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4d27e572a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4d3543f17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d345c06db in start_thread (arg=0x7f4d254be700) at pthread_create.c:463
#6  0x00007f4d34d3a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4d3b75e800 (LWP 1319)):
[KCrash Handler]
#6  0x00007f4d39164268 in QQuickAnimatorProxyJob::sceneGraphInitialized() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f4d3564d1d2 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4d3662583c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f4d3662d104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f4d3561d9e8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f4d3562015d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f4d35677373 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f4d2f897387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f4d2f8975c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f4d2f89764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f4d3567699f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f4d3561ba1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f4d35624ac4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x000055c613b87cfa in  ()
#20 0x00007f4d34c3ab97 in __libc_start_main (main=0x55c613b87320, argc=1, argv=0x7ffff1779f78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff1779f68) at ../csu/libc-start.c:310
#21 0x000055c613b8809a in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 381480.

Possible duplicates by query: bug 405965, bug 403223, bug 401319, bug 400845, bug 400525.

Reported using DrKonqi