Bug 440429 - Crash in QQuickWindowPrivate::sendFilteredPointerEventImpl
Summary: Crash in QQuickWindowPrivate::sendFilteredPointerEventImpl
Status: RESOLVED DUPLICATE of bug 446111
Alias: None
Product: systemsettings
Classification: Applications
Component: generic-crash (show other bugs)
Version: 5.22.4
Platform: Neon Linux
: NOR crash
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords: drkonqi
: 465927 (view as bug list)
Depends on:
Blocks:
 
Reported: 2021-07-30 17:26 UTC by Barinov Egor
Modified: 2023-02-21 18:19 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
New crash information added by DrKonqi (9.45 KB, text/plain)
2022-10-12 19:53 UTC, rlpnefd4
Details

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Description Barinov Egor 2021-07-30 17:26:40 UTC
Application: systemsettings5 (5.22.4)

Qt Version: 5.15.3
Frameworks Version: 5.84.0
Operating System: Linux 5.8.0-63-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.4
Distribution: KDE neon User Edition 5.22

-- Information about the crash:
- What I was doing when the application crashed:

Application: Параметры системы (systemsettings5), signal: Segmentation fault

[New LWP 4297]
[New LWP 4298]
[New LWP 4299]
[New LWP 4300]
[New LWP 4301]
[New LWP 4302]
[New LWP 4307]
[New LWP 4308]
[New LWP 4312]
[New LWP 4320]
[New LWP 4321]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007faef85daaff in __GI___poll (fds=0x7ffc81085078, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7faef3e1f9c0 (LWP 4295))]

Thread 12 (Thread 0x7faea5994700 (LWP 4321)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593440e34f0) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5593440e34a0, cond=0x5593440e34c8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5593440e34c8, mutex=0x5593440e34a0) at pthread_cond_wait.c:638
#3  0x00007faef896cf2b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef7d79b44 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007faef7d79fb9 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7faea71bf700 (LWP 4320)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faea0004c70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef66d736e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7faec21e8700 (LWP 4312)):
#0  __GI___libc_read (nbytes=16, buf=0x7faec21e79b0, fd=26) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=26, buf=0x7faec21e79b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7faec35e5700 (LWP 4308)):
#0  __GI___libc_read (nbytes=16, buf=0x7faec35e49b0, fd=21) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=21, buf=0x7faec35e49b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faedd80a700 (LWP 4307)):
#0  __GI___libc_read (nbytes=16, buf=0x7faedd8099b0, fd=20) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=20, buf=0x7faedd8099b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faee98a1700 (LWP 4302)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faeea0a2700 (LWP 4301)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7faeea8a3700 (LWP 4300)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7faef0c05700 (LWP 4299)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7faef23bb700 (LWP 4298)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faee4004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef66d736e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faef761af4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faef32b1700 (LWP 4297)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faef32b0ae8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef70dbc1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faef70dd90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007faef39ffe58 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7faef3e1f9c0 (LWP 4295)):
[KCrash Handler]
#4  0x00007faef7dd8fe0 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007faef7dd9dac in QQuickWindowPrivate::deliverToPassiveGrabbers(QVector<QPointer<QQuickPointerHandler> > const&, QQuickPointerEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007faef7ddfd33 in QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007faef7de14ff in QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007faef7de2429 in QQuickWindowPrivate::handleMouseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007faef906ae1d in QWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007faef7de3e9b in QQuickWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007faef975ebb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007faef8115b0e in QQuickWidget::mouseDoubleClickEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#21 0x00007faef97992a3 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007faef8115fa7 in QQuickWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#23 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007faef975ee77 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007faef975e0a7 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007faef97b3f44 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007faef97b7264 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007faef975ebb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007faef905f602 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#33 0x00007faef9060b55 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007faef90387ac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#35 0x00007faef3a00e7e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#36 0x00007faef66d717d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007faef66d7400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007faef8ba7fb2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007faef8b54414 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x0000559341917272 in ?? ()
#43 0x00007faef84ec0b3 in __libc_start_main (main=0x559341916a20, argc=1, argv=0x7ffc81087bb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc81087ba8) at ../csu/libc-start.c:308
#44 0x0000559341917ece in ?? ()
[Inferior 1 (process 4295) detached]

The crash can be reproduced sometimes.

-- Backtrace:
Application: Параметры системы (systemsettings5), signal: Segmentation fault

[New LWP 4297]
[New LWP 4298]
[New LWP 4299]
[New LWP 4300]
[New LWP 4301]
[New LWP 4302]
[New LWP 4307]
[New LWP 4308]
[New LWP 4312]
[New LWP 4320]
[New LWP 4321]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007faef85daaff in __GI___poll (fds=0x7ffc81085078, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7faef3e1f9c0 (LWP 4295))]

Thread 12 (Thread 0x7faea5994700 (LWP 4321)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593440e34f0) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5593440e34a0, cond=0x5593440e34c8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5593440e34c8, mutex=0x5593440e34a0) at pthread_cond_wait.c:638
#3  0x00007faef896cf2b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef7d79b44 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007faef7d79fb9 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7faea71bf700 (LWP 4320)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faea0004c70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef66d736e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7faec21e8700 (LWP 4312)):
#0  __GI___libc_read (nbytes=16, buf=0x7faec21e79b0, fd=26) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=26, buf=0x7faec21e79b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7faec35e5700 (LWP 4308)):
#0  __GI___libc_read (nbytes=16, buf=0x7faec35e49b0, fd=21) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=21, buf=0x7faec35e49b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faedd80a700 (LWP 4307)):
#0  __GI___libc_read (nbytes=16, buf=0x7faedd8099b0, fd=20) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=20, buf=0x7faedd8099b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faef671fb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef66d6ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faef66d7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faef79ff559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faee98a1700 (LWP 4302)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faeea0a2700 (LWP 4301)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7faeea8a3700 (LWP 4300)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7faef0c05700 (LWP 4299)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5593421579a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559342157958, cond=0x559342157980) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559342157980, mutex=0x559342157958) at pthread_cond_wait.c:638
#3  0x00007faeead5eb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faeead5e75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7faef23bb700 (LWP 4298)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faee4004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef66d736e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faef8ba7fcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef8965c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faef761af4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faef32b1700 (LWP 4297)):
#0  0x00007faef85daaff in __GI___poll (fds=0x7faef32b0ae8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faef70dbc1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faef70dd90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007faef39ffe58 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007faef8966dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faef7096609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faef85e7293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7faef3e1f9c0 (LWP 4295)):
[KCrash Handler]
#4  0x00007faef7dd8fe0 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007faef7dd8f15 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007faef7dd9dac in QQuickWindowPrivate::deliverToPassiveGrabbers(QVector<QPointer<QQuickPointerHandler> > const&, QQuickPointerEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007faef7ddfd33 in QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007faef7de14ff in QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007faef7de2429 in QQuickWindowPrivate::handleMouseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007faef906ae1d in QWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007faef7de3e9b in QQuickWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007faef975ebb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007faef8115b0e in QQuickWidget::mouseDoubleClickEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#21 0x00007faef97992a3 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007faef8115fa7 in QQuickWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#23 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007faef975ee77 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007faef975e0a7 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007faef97b3f44 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007faef97b7264 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007faef9755dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007faef975ebb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007faef8b4d75a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007faef905f602 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#33 0x00007faef9060b55 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007faef90387ac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#35 0x00007faef3a00e7e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#36 0x00007faef66d717d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007faef66d7400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007faef66d74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007faef8ba7fb2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007faef8b4c25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007faef8b54414 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x0000559341917272 in ?? ()
#43 0x00007faef84ec0b3 in __libc_start_main (main=0x559341916a20, argc=1, argv=0x7ffc81087bb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc81087ba8) at ../csu/libc-start.c:308
#44 0x0000559341917ece in ?? ()
[Inferior 1 (process 4295) detached]

Reported using DrKonqi
Comment 1 Nate Graham 2021-08-02 20:07:56 UTC
Can't see any KDE code implicated. :/
Comment 2 David Edmundson 2021-12-06 23:04:08 UTC
*** Bug 444102 has been marked as a duplicate of this bug. ***
Comment 3 Nate Graham 2022-01-21 01:39:34 UTC

*** This bug has been marked as a duplicate of bug 446111 ***
Comment 4 rlpnefd4 2022-10-12 19:53:11 UTC
Created attachment 152753 [details]
New crash information added by DrKonqi

systemsettings (5.25.5) using Qt 5.15.6

The Steam RPM (from RPMFusion) was updating in the background.

In the global theme settings, I clicked the "Spiderman" theme which was there - I had installed the "Spiderman" splash screen from Get New Splash Screens to see what it was, but didn't apply it. I then clicked Breeze Dark which is what I had before and clicked off, then reclicked it and checked all the b oxes and applied. Then the background became a black screen and toolbar dissappeared, and settings crashed before the theme was applied.

-- Backtrace (Reduced):
#4  0x00007f34180aad92 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () at /lib64/libQt5Quick.so.5
#5  0x00007f34180aaca1 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () at /lib64/libQt5Quick.so.5
#6  0x00007f34180aaca1 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () at /lib64/libQt5Quick.so.5
#7  0x00007f34180aaca1 in QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent*, QQuickItem*, QQuickItem*) () at /lib64/libQt5Quick.so.5
#8  0x00007f34180aba51 in QQuickWindowPrivate::deliverToPassiveGrabbers(QVector<QPointer<QQuickPointerHandler> > const&, QQuickPointerEvent*) () at /lib64/libQt5Quick.so.5
Comment 5 Nate Graham 2023-02-21 18:19:47 UTC
*** Bug 465927 has been marked as a duplicate of this bug. ***