Bug 420885

Summary: Plasmashell keep crashing repeatdly: QSocketNotifier: Invalid socket
Product: [Plasma] plasmashell Reporter: Abhishek Bhasker <abhinickz6>
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED WORKSFORME    
Severity: crash CC: jose.elias.0703, nate, plasma-bugs, x.ouimet
Priority: NOR Keywords: drkonqi
Version: 5.18.4   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Abhishek Bhasker 2020-05-02 04:16:20 UTC 
Application: plasmashell (5.18.4)

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-28-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Logged in to the system, It crashed.
Manually restarting service also fails each time.
Log:
 $ kstart5 plasmashell
org.kde.plasmaquick: Applet preload policy set to 1
kf5.kpackage: No metadata file in the package, expected it at: "/home/abhasker/Pictures/"
kf5.kpackage: No metadata file in the package, expected it at: "/home/abhasker/Pictures/"
kf5.kpackage: No metadata file in the package, expected it at: "/home/abhasker/Pictures/"
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:76:9: Unable to assign [undefined] to QStringList
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:75:9: Unable to assign [undefined] to int
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:75:9: Unable to assign [undefined] to int
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:76:9: Unable to assign [undefined] to QStringList
kf5.kservice.sycoca: Parse error in  "/home/abhasker/.config/menus/applications-merged/xdg-desktop-menu-dummy.menu" , line  1 , col  1 :  "unexpected end of file"
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
Plasma Shell startup completed
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:306:17: QML QQuickText: Binding loop detected for property "width"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:306:17: QML QQuickText: Binding loop detected for property "width"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:306:17: QML QQuickText: Binding loop detected for property "width"
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderItemDelegate.qml:306:17: QML QQuickText: Binding loop detected for property "width"
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
Loading Calendar plugin HolidaysEventsPlugin(0x55d34a65a6d0)
Loading Calendar plugin PimEventsPlugin(0x55d34a652270)
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
trying to show an empty dialog
trying to show an empty dialog
QQuickItem::stackAfter: Cannot stack StatusNotifierItem_QMLTYPE_285(0x55d34aaba5f0, parent=0x55d34a153640, geometry=0,0 0x0) after StatusNotifierItem_QMLTYPE_285(0x55d34aa3aad0), which must be a sibling
QQuickItem::stackAfter: Cannot stack StatusNotifierItem_QMLTYPE_285(0x55d34aa35090, parent=0x55d34a153640, geometry=0,0 0x0) after StatusNotifierItem_QMLTYPE_285(0x55d34aaba5f0), which must be a sibling
Both point size and pixel size set. Using pixel size.
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
KAStatsFavoritesModel::setFavorites is ignored
trying to show an empty dialog
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
trying to show an empty dialog
3
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/components.3/ComboBox.qml:150:13: Unable to assign [undefined] to QQmlComponent*
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/components.3/ComboBox.qml:150:13: Unable to assign [undefined] to QQmlComponent*
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
sock_file=/run/user/1000/kdeinit5__0
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 9068
KCrash: Arguments: /usr/bin/plasmashell 
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 29 and type 'Read', disabling...
QSocketNotifier: Invalid socket 10 and type 'Read', disabling...

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 0x7fccace8b280 (LWP 9068))]

Thread 11 (Thread 0x7fcc6d375700 (LWP 9122)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d34b706264) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d34b706210, cond=0x55d34b706238) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d34b706238, mutex=0x55d34b706210) at pthread_cond_wait.c:638
#3  0x00007fccb08dcb0f in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fccb08dcc01 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccb25bb109 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fccb25bb3ad in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fcc7faff700 (LWP 9099)):
#0  0x00007ffeaabeb6cb in  ()
#1  0x00007ffeaabeb918 in clock_gettime ()
#2  0x00007fccb0523235 in __GI___clock_gettime (clock_id=1, tp=0x7fcc7fafead0) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#3  0x00007fccb0af5e45 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fccb0af46dd in QTimerInfoList::updateCurrentTime() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccb0af4cb9 in QTimerInfoList::timerWait(timespec&) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fccb0af62d6 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fccaf17e72f in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fccaf17f0db in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fccaf17f2e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fccb0af6583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fccb0a9d4db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fccb08d5785 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fccb252ee1a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#16 0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fcc8cd1c700 (LWP 9098)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d3499cb3d4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d3499cb380, cond=0x55d3499cb3a8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d3499cb3a8, mutex=0x55d3499cb380) at pthread_cond_wait.c:638
#3  0x00007fccb08dcb0f in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fccb08dcc01 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccb25bb109 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fccb25bb3ad in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fcc95731700 (LWP 9075)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d3494b6f48) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d3494b6ef8, cond=0x55d3494b6f20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d3494b6f20, mutex=0x55d3494b6ef8) at pthread_cond_wait.c:638
#3  0x00007fcc9adff3db in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fcc9adfefeb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fcc95f32700 (LWP 9074)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d3494b6f48) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d3494b6ef8, cond=0x55d3494b6f20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d3494b6f20, mutex=0x55d3494b6ef8) at pthread_cond_wait.c:638
#3  0x00007fcc9adff3db in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fcc9adfefeb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fcc8df32700 (LWP 9073)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d3494b6f48) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d3494b6ef8, cond=0x55d3494b6f20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d3494b6f20, mutex=0x55d3494b6ef8) at pthread_cond_wait.c:638
#3  0x00007fcc9adff3db in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fcc9adfefeb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fcc96733700 (LWP 9072)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d3494b6f48) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d3494b6ef8, cond=0x55d3494b6f20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d3494b6f20, mutex=0x55d3494b6ef8) at pthread_cond_wait.c:638
#3  0x00007fcc9adff3db in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fcc9adfefeb in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fccaa14e700 (LWP 9071)):
#0  0x00007fccaf1cc33d in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fccaf17e935 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fccaf17f128 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fccaf17f2e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fccb0af6583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccb0a9d4db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fccb08d5785 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fccb22481a9 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fccab3cf700 (LWP 9070)):
#0  0x00007fccb055896f in __GI___poll (fds=0x7fcc9c0202a0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fccaf17f1ae in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fccaf17f2e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fccb0af6583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fccb0a9d4db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccb08d5785 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fccb1b09efa in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fccabfeb700 (LWP 9069)):
#0  0x00007fccb055896f in __GI___poll (fds=0x7fccabfeaca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fccb29c1c1a in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fccb29c390a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fccac7d7298 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fccb08d69d2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fccafd7c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fccb0565103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fccace8b280 (LWP 9068)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007fccb25ed71b in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fccb25ed78d in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fccb27a0387 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fccac86b04a in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#11 0x00007fccac86e407 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007fccac86f3ee in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007fccb25fab2c in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fccb2601149 in QQuickItem::setParentItem(QQuickItem*) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fccb2602c1c in QQuickItem::~QQuickItem() () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fcca80ba7f2 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Templates.2/libqtquicktemplates2plugin.so
#17 0x00007fccb0acab74 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fccb25ffca3 in QQuickItem::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007fccb1512a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fccb151c0f0 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fccb0a9e93a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fccb0aa15b8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fccb0af6f67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fccaf17efbd in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fccaf17f240 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fccaf17f2e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fccb0af6565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fccb0a9d4db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fccb0aa5246 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x000055d347a88b25 in  ()
#31 0x00007fccb046a0b3 in __libc_start_main (main=0x55d347a87ea0, argc=1, argv=0x7ffeaab14c08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeaab14bf8) at ../csu/libc-start.c:308
#32 0x000055d347a88cde in _start ()
[Inferior 1 (process 9068) detached]

Possible duplicates by query: bug 420837, bug 420833, bug 420808, bug 420801, bug 420781.

Reported using DrKonqi
Comment 1 Nate Graham 2021-03-08 22:25:11 UTC 
Unfortunately the backtrace is quite incomplete and missing debug symbols:

Thread 1 (Thread 0x7fccace8b280 (LWP 9068)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007fccb25ed71b in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fccb25ed78d in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fccb27a0387 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fccac86b04a in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#11 0x00007fccac86e407 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007fccac86f3ee in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007fccb25fab2c in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5

If this crash is reproducible, could you please install debug symbols, reproduce it, and attach a new symbolicated backtrace? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Thanks!
Comment 2 Nate Graham 2021-03-08 22:28:16 UTC 
*** Bug 419544 has been marked as a duplicate of this bug. ***
Comment 3 Nate Graham 2021-03-08 22:37:55 UTC 
*** Bug 418847 has been marked as a duplicate of this bug. ***
Comment 4 Nate Graham 2021-03-08 23:18:28 UTC 
*** Bug 417479 has been marked as a duplicate of this bug. ***
Comment 5 Nate Graham 2021-03-09 01:58:10 UTC 
*** Bug 417522 has been marked as a duplicate of this bug. ***
Comment 6 Nate Graham 2021-03-09 03:05:47 UTC 
*** Bug 414065 has been marked as a duplicate of this bug. ***
Comment 7 Bug Janitor Service 2021-03-24 04:33:46 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 8 Abhishek Bhasker 2021-03-25 11:59:34 UTC 
This issue occurred when I used backports ppa to update the plasma version and after restarting the system. I also made a post (https://www.reddit.com/r/kde/comments/f2p9zt/plasmashell_keeps_crashing_after_updating_to_518/) on Reddit for help which contains some additional info.

After some time I decided to delete the old plasma config (i.e. themes, icons, and all config I could found) and then restarting the system resolved this issue.

After that, I removed the backports ppa and never tried this again.

I think, If I do this again, the same issue could occur. (make some custom changes and use backports ppa to upgrade the plasma version and restart)

Let me know, what else I can provide to reproduce this bug, as right now It not produceble without doing above changes.
Comment 9 Nate Graham 2021-03-25 18:25:59 UTC 
You don't need to use the backports PPA to get Plasma 5.18. That's the version shipped by default in Kubuntu 20.04.
Comment 10 Bug Janitor Service 2021-04-09 04:33:25 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 11 Bug Janitor Service 2021-04-24 04:33:16 UTC 
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!