Bug 437865

Application: plasmashell (5.21.5)

Qt Version: 5.15.2
Frameworks Version: 5.82.0
Operating System: Linux 5.4.0-73-generic x86_64
Windowing System: X11
Drkonqi Version: 5.21.5
Distribution: KDE neon User Edition 5.21

-- Information about the crash:
- What I was doing when the application crashed:
login to user account.

- Custom settings of the application:
Added a third Default Application Panel to right screen(Three monitors, one for each monitor.); and applied Plasma Style: NoSeams (My default Plasma Style.).
I have to Alt-F2, to logout/reboot/shutdown or start any application.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[New LWP 6299]
[New LWP 6327]
[New LWP 6421]
[New LWP 6688]
[New LWP 6697]
[New LWP 6708]
[New LWP 6720]
[New LWP 6781]
[New LWP 6882]
[New LWP 7118]
[New LWP 7170]
[New LWP 7177]
[New LWP 7212]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fefe0bf9aff in __GI___poll (fds=0x7ffd6797b0e8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7fefdce2b8c0 (LWP 6294))]

Thread 14 (Thread 0x7fef84ded700 (LWP 7212)):
#0  0x00007fefe0bf9aff in __GI___poll (fds=0x7fef7c00d9c0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefdf46536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefe11c6ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefe0f85a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fef87bff700 (LWP 7177)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb9207134) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb92070e0, cond=0x562fb9207108) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb9207108, mutex=0x562fb92070e0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fef94b82700 (LWP 7170)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb79ec014) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb79ebfc0, cond=0x562fb79ebfe8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb79ebfe8, mutex=0x562fb79ebfc0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fef95383700 (LWP 7118)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb75c5124) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb75c50d0, cond=0x562fb75c50f8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb75c50f8, mutex=0x562fb75c50d0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fef964a4700 (LWP 6882)):
#0  0x00007fefe0bf9aff in __GI___poll (fds=0x7fef90006150, nfds=1, timeout=3341304) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefdf46536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefe11c6ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefe0f85a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefc530c07c in KCupsConnection::run() () from /lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fefa51e3700 (LWP 6781)):
#0  0x00007fefdf4b2508 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fefdf4648e1 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdf46529b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fefe11c6ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe0f85a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fefb0e67700 (LWP 6720)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb6fbd414) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb6fbd3c0, cond=0x562fb6fbd3e8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb6fbd3e8, mutex=0x562fb6fbd3c0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fefb3fff700 (LWP 6708)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb68cfb30) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb68cfae0, cond=0x562fb68cfb08) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb68cfb08, mutex=0x562fb68cfae0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fefc51c8700 (LWP 6697)):
#0  0x00007fefe0bfc12b in __GI___select (nfds=38, readfds=0x7fefc51c7ca0, writefds=0x0, exceptfds=0x0, timeout=0x7fefc51c7c90) at ../sysdeps/unix/sysv/linux/select.c:41
#1  0x00007fefd97a1981 in ?? () from /lib/x86_64-linux-gnu/libnvidia-glcore.so.460.73.01
#2  0x00007fefd979f46a in ?? () from /lib/x86_64-linux-gnu/libnvidia-glcore.so.460.73.01
#3  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#4  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fefc6d8a700 (LWP 6688)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x562fb6d53914) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x562fb6d538c0, cond=0x562fb6d538e8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x562fb6d538e8, mutex=0x562fb6d538c0) at pthread_cond_wait.c:638
#3  0x00007fefe0f8cd5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe2d26814 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefe2d26c89 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fefd35ef700 (LWP 6421)):
#0  0x00007fefdf4b24dd in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fefdf465354 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefe11c6ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefe0f85a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe2860fa9 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fefdb6a1700 (LWP 6327)):
#0  0x00007fefdf4618ed in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fefdf463345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdf46482b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefdf46529b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fefe11c6ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefe0f85a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefe1aeef4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fefdc50c700 (LWP 6299)):
#0  0x00007fefe0bf9aff in __GI___poll (fds=0x7fefdc50bbe8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefe31edc1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fefe31ef90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fefdca27d58 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fefe0f86bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefdffd6609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fefe0c06293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fefdce2b8c0 (LWP 6294)):
[KCrash Handler]
#4  0x00007fefb021a352 in DaysModel::update (this=0x562fbba4fe90) at ./src/declarativeimports/calendar/daysmodel.cpp:130
#5  DaysModel::update (this=0x562fbba4fe90) at ./src/declarativeimports/calendar/daysmodel.cpp:112
#6  0x00007fefb0214be5 in DaysModel::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0x562fbb4ff258, _c=<optimized out>) at ./obj-x86_64-linux-gnu/src/declarativeimports/calendar/calendarplugin_autogen/EWIEGA46WW/moc_daysmodel.cpp:113
#7  0x00007fefe119a279 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefe1e6adc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fefe1e73bb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fefe116c6da in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fefe116efe1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fefe11c7987 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fefdf46517d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fefdf465400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fefdf4654a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fefe11c6fe2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fefe116b1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fefe1173394 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x0000562fb4d92efe in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:251
[Inferior 1 (process 6294) detached]

Possible duplicates by query: bug 437773, bug 437110, bug 435992, bug 435427, bug 434725.

Reported using DrKonqi