Bug 430685

Application: plasmashell (5.20.4)

Qt Version: 5.15.2
Frameworks Version: 5.77.0
Operating System: Linux 5.4.0-58-generic x86_64
Windowing system: Wayland
Distribution: KDE neon User Edition 5.20

-- Information about the crash:
- What I was doing when the application crashed: Logging in which was markedly slower than usual but completed.

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

[New LWP 2868]
[New LWP 3010]
[New LWP 3013]
[New LWP 3014]
[New LWP 3015]
[New LWP 3016]
[New LWP 3034]
[New LWP 3050]
[New LWP 3059]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f744d7beaff in __GI___poll (fds=0x7fff787c95a8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f7449a202c0 (LWP 2832))]

Thread 10 (Thread 0x7f7423fff700 (LWP 3059)):
#0  0x00007f744c13d368 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f744c0efd7d in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744c0f0240 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f744dd8bfbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f744db4aa12 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f74124c407c in KCupsConnection::run() () at /lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f744db4bbac in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f74237fe700 (LWP 3050)):
#0  0x00007f744c0efaa3 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f744c0f0152 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744dd8bfbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f744db4aa12 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f744f82638a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f744db4bbac in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f74390d5700 (LWP 3034)):
#0  0x00007f744d7beaff in __GI___poll (fds=0x7f7428004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f744c0f01ae in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744dd8bfbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f744db4aa12 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f744db4bbac in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f743b7fe700 (LWP 3016)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563578364d18) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563578364cc8, cond=0x563578364cf0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563578364cf0, mutex=0x563578364cc8) at pthread_cond_wait.c:638
#3  0x00007f7441bb697b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7441bb658b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f743bfff700 (LWP 3015)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563578364d18) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563578364cc8, cond=0x563578364cf0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563578364cf0, mutex=0x563578364cc8) at pthread_cond_wait.c:638
#3  0x00007f7441bb697b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7441bb658b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7440cf9700 (LWP 3014)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563578364d18) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563578364cc8, cond=0x563578364cf0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563578364cf0, mutex=0x563578364cc8) at pthread_cond_wait.c:638
#3  0x00007f7441bb697b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7441bb658b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f74414fa700 (LWP 3013)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563578364d18) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563578364cc8, cond=0x563578364cf0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563578364cf0, mutex=0x563578364cc8) at pthread_cond_wait.c:638
#3  0x00007f7441bb697b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7441bb658b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f74435ef700 (LWP 3010)):
#0  0x00007f744c0ee141 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f744c0efaff in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f744c0f0152 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f744dd8bfbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f744db4aa12 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f744f421fa9 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f744db4bbac in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7448e6d700 (LWP 2868)):
#0  __GI___libc_read (nbytes=16, buf=0x7f7448e6caa0, fd=5) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=5, buf=0x7f7448e6caa0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f744c13889f in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f744c0efcfe in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f744c0f0152 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f744dd8bfbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f744db4aa12 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f744e6b3f4b in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f744db4bbac in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f744cbb0609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f744d7cb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7449a202c0 (LWP 2832)):
[KCrash Handler]
#4  0x00007f744e769d5f in KConfigGroup::parent() const () at /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#5  0x0000563575be6161 in PanelView::restore() (this=this@entry=0x563579b662e0) at ./shell/panelview.cpp:576
#6  0x0000563575be6582 in PanelView::containmentChanged() (this=0x563579b662e0) at ./shell/panelview.cpp:1180
#7  0x0000563575be69d3 in PanelView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7fff787c9fe0) at ./obj-x86_64-linux-gnu/shell/plasmashell_autogen/include/moc_panelview.cpp:261
#8  0x00007f744dd686f0 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f74500d8d2a in  () at /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#10 0x0000563575bf043d in ShellCorona::createWaitingPanels() (this=0x563577a831f0) at ./shell/shellcorona.cpp:1371
#11 0x00007f744dd686be in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f744dd6d1ee in QTimer::timeout(QTimer::QPrivateSignal) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f744dd5f155 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f744ea2bdc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f744ea34bb8 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f744dd3169a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f744dd8b2f0 in QTimerInfoList::activateTimers() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f744dd8bbdc in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f744c0effbd in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f744c0f0240 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f744c0f02e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f744dd8bfa2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f744dd301ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f744dd38354 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x0000563575bcad6c in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:252
[Inferior 1 (process 2832) detached]

Possible duplicates by query: bug 430656, bug 430548, bug 429240, bug 428678, bug 427096.

Reported using DrKonqi