Bug 429716

Summary: System settings crashes in KNSCore::Cache::registerChangedEntry() on boot splash install
Product: [Frameworks and Libraries] frameworks-knewstuff Reporter: Albert <albertzubkowicz>
Component: generalAssignee: Dan Leinir Turthra Jensen <admin>
Status: RESOLVED DUPLICATE    
Severity: crash CC: kdelibs-bugs-null, nate
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.76.0   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Albert 2020-11-27 10:18:35 UTC 
Application: systemsettings5 (5.20.2)

Qt Version: 5.15.1
Frameworks Version: 5.76.0
Operating System: Linux 5.4.0-53-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.20

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

I've installed ubuntu sunrise theme, then plexus. I've noticed the first one doesn't appear in list of available installed themes, so I clicked 'install' again and then there was a crash.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault

[New LWP 4206]
[New LWP 4208]
[New LWP 4209]
[New LWP 4210]
[New LWP 4211]
[New LWP 4218]
[New LWP 4220]
[New LWP 4957]
[New LWP 4958]
[New LWP 5030]
[New LWP 5031]
[New LWP 5035]
[New LWP 5280]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fadf385aaff in __GI___poll (fds=0x7ffe8bcff368, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7fadef4f8880 (LWP 4202))]

Thread 14 (Thread 0x7fad8d57b700 (LWP 5280)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fad6c009500, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fad6c04e2f0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fad8d57ad00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fadf2debd69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c6464b600) at thread/qthread_unix.cpp:329
#8  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fad8dd7c700 (LWP 5035)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fad68003e20, nfds=1, timeout=33320) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fad68000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fad8dd7bd20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c640c4e30) at thread/qthread_unix.cpp:329
#7  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fad8fc7f700 (LWP 5031)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fad7c04bd90, nfds=1, timeout=32320) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fad7c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fad8fc7ed20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c6409ebd0) at thread/qthread_unix.cpp:329
#7  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fad9cfbb700 (LWP 5030)):
#0  0x00007fadf19a933d in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fadf195bd6a in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fad78000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fad9cfbad20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c6340fa70) at thread/qthread_unix.cpp:329
#8  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fada5e3a700 (LWP 4958)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fad98005af0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c533 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fada8704eda in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fadf1985931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fada77d3700 (LWP 4957)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x559c60e8f640, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf195c331 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fadf1985931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fadd2a93700 (LWP 4220)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fadb0004a30, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fadb0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fadd2a92d00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fadf2debd69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c5fe545e0) at thread/qthread_unix.cpp:329
#8  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fadd8c8a700 (LWP 4218)):
#0  0x00007fadf385aaff in __GI___poll (fds=0x7fadac005240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fadf195c1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fadac000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7fadd8c89d00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fadf2debd69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x559c5f87c2a0) at thread/qthread_unix.cpp:329
#8  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fade4a06700 (LWP 4211)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x559c5f6d12c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559c5f6d1278, cond=0x559c5f6d12a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559c5f6d12a0, mutex=0x559c5f6d1278) at pthread_cond_wait.c:638
#3  0x00007fade692462b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fade692423b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fade5207700 (LWP 4210)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x559c5f6d12c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559c5f6d1278, cond=0x559c5f6d12a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559c5f6d12a0, mutex=0x559c5f6d1278) at pthread_cond_wait.c:638
#3  0x00007fade692462b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fade692423b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fade5a08700 (LWP 4209)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x559c5f6d12c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559c5f6d1278, cond=0x559c5f6d12a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559c5f6d12a0, mutex=0x559c5f6d1278) at pthread_cond_wait.c:638
#3  0x00007fade692462b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fade692423b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fade6209700 (LWP 4208)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x559c5f6d12c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x559c5f6d1278, cond=0x559c5f6d12a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x559c5f6d12a0, mutex=0x559c5f6d1278) at pthread_cond_wait.c:638
#3  0x00007fade692462b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fade692423b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faded451700 (LWP 4206)):
#0  0x00007fadf3e23add in QElapsedTimer::isMonotonic () at kernel/qelapsedtimer_unix.cpp:155
#1  0x00007fadf3e22923 in QTimerInfoList::repairTimersIfNeeded (this=0x7fade0004d50) at kernel/qtimerinfo_unix.cpp:162
#2  0x00007fadf3e22997 in QTimerInfoList::timerWait (this=0x7fade0004d50, tm=...) at kernel/qtimerinfo_unix.cpp:389
#3  0x00007fadf3e23fa6 in timerSourcePrepareHelper (timeout=0x7faded450b24, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#4  timerSourcePrepare (source=<optimized out>, timeout=0x7faded450b24) at kernel/qeventdispatcher_glib.cpp:166
#5  0x00007fadf195b72f in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fadf195c0db in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fadf3e2424b in QEventDispatcherGlib::processEvents (this=0x7fade0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#9  0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7faded450cf0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#10 0x00007fadf3be4982 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#11 0x00007fadf2a06f4b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007fadf3be5b1c in QThreadPrivate::start (arg=0x7fadf2a8ad80) at thread/qthread_unix.cpp:329
#13 0x00007fadf226e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#14 0x00007fadf3867293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fadef4f8880 (LWP 4202)):
[KCrash Handler]
#4  0x00007fadf3df3c68 in std::__atomic_base<QThreadData*>::load (__m=std::memory_order_relaxed, this=0x100000038) at /usr/include/c++/9/bits/atomic_base.h:734
#5  std::atomic<QThreadData*>::load (__m=std::memory_order_relaxed, this=0x100000038) at /usr/include/c++/9/atomic:519
#6  QAtomicOps<QThreadData*>::loadRelaxed<QThreadData*> (_q_value=...) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:239
#7  QBasicAtomicPointer<QThreadData>::loadRelaxed (this=0x100000038) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:248
#8  QObject::thread (this=this@entry=0x559c63297590) at kernel/qobject.cpp:1487
#9  0x00007fadf3dfa85d in QObject::killTimer (this=this@entry=0x559c63297590, id=1676475024) at kernel/qobject.cpp:1795
#10 0x00007fadf3e05709 in QTimer::stop (this=this@entry=0x559c63297590) at kernel/qtimer.cpp:243
#11 0x00007fadf3e05783 in QTimer::start (this=0x559c63297590) at kernel/qtimer.cpp:211
#12 0x00007fadaac86f64 in KNSCore::Cache::registerChangedEntry (this=0x559c632f5590, entry=...) at ./src/core/cache.cpp:290
#13 0x00007fadf3e0094e in QtPrivate::QSlotObjectBase::call (a=0x7ffe8bcffe30, r=0x559c632f5590, this=0x559c63450410) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#14 doActivate<false> (sender=0x7fade80175b0, signal_index=9, argv=0x7ffe8bcffe30) at kernel/qobject.cpp:3886
#15 0x00007fadf3df9d17 in QMetaObject::activate (sender=sender@entry=0x7fade80175b0, m=m@entry=0x7fadaacf35c0 <KNSCore::Engine::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x7ffe8bcffe30) at kernel/qobject.cpp:3946
#16 0x00007fadaac77bb9 in KNSCore::Engine::signalEntryChanged (this=this@entry=0x7fade80175b0, _t1=...) at ./obj-x86_64-linux-gnu/src/core/KF5NewStuffCore_autogen/EWIEGA46WW/moc_engine.cpp:578
#17 0x00007fadaac9314e in KNSCore::Engine::install (this=this@entry=0x7fade80175b0, entry=..., linkId=linkId@entry=1) at ./src/core/engine.cpp:553
#18 0x00007fadaad4c9d5 in KNS3::ItemsViewBaseDelegate::slotInstallClicked (this=0x559c634bc860) at ./src/ui/itemsviewbasedelegate.cpp:72
#19 0x00007fadf3e0094e in QtPrivate::QSlotObjectBase::call (a=0x7ffe8bd000a0, r=0x559c634bc860, this=0x559c6408fc80) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#20 doActivate<false> (sender=0x559c63e07e20, signal_index=9, argv=0x7ffe8bd000a0) at kernel/qobject.cpp:3886
#21 0x00007fadf3df9d17 in QMetaObject::activate (sender=sender@entry=0x559c63e07e20, m=m@entry=0x7fadf4ed7600 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffe8bd000a0) at kernel/qobject.cpp:3946
#22 0x00007fadf4ab9896 in QAbstractButton::clicked (this=this@entry=0x559c63e07e20, _t1=<optimized out>) at .moc/moc_qabstractbutton.cpp:308
#23 0x00007fadf4ab9abe in QAbstractButtonPrivate::emitClicked (this=0x7fad68057fc0) at widgets/qabstractbutton.cpp:415
#24 0x00007fadf4abaf93 in QAbstractButtonPrivate::click (this=0x7fad68057fc0) at widgets/qabstractbutton.cpp:408
#25 0x00007fadf4abb155 in QAbstractButton::mouseReleaseEvent (this=0x559c63e07e20, e=0x7ffe8bd00650) at widgets/qabstractbutton.cpp:1044
#26 0x00007fadf4bb211e in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:622
#27 0x00007fadf4a04be6 in QWidget::event (this=0x559c63e07e20, event=0x7ffe8bd00650) at kernel/qwidget.cpp:8663
#28 0x00007fadf4abc383 in QAbstractButton::event (this=this@entry=0x559c63e07e20, e=e@entry=0x7ffe8bd00650) at widgets/qabstractbutton.cpp:1001
#29 0x00007fadf4bb21c8 in QToolButton::event (this=0x559c63e07e20, event=0x7ffe8bd00650) at widgets/qtoolbutton.cpp:1012
#30 0x00007fadf49c1da3 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x559c63e07e20, e=0x7ffe8bd00650) at kernel/qapplication.cpp:3630
#31 0x00007fadf49cae57 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3074
#32 0x00007fadf3dc992a in QCoreApplication::notifyInternal2 (receiver=0x559c63e07e20, event=0x7ffe8bd00650) at ../../include/QtCore/5.15.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#33 0x00007fadf49ca087 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x559c63e07e20, event=event@entry=0x7ffe8bd00650, alienWidget=alienWidget@entry=0x559c63e07e20, nativeWidget=0x7fade8005fd0, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2614
#34 0x00007fadf4a1fe34 in QWidgetWindow::handleMouseEvent (this=0x559c63e52860, event=0x7ffe8bd00ad0) at /usr/include/c++/9/bits/atomic_base.h:413
#35 0x00007fadf4a23154 in QWidgetWindow::event (event=0x7ffe8bd00ad0, this=0x559c63e52860) at kernel/qwidgetwindow.cpp:300
#36 QWidgetWindow::event (this=0x559c63e52860, event=0x7ffe8bd00ad0) at kernel/qwidgetwindow.cpp:239
#37 0x00007fadf49c1da3 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x559c63e52860, e=0x7ffe8bd00ad0) at kernel/qapplication.cpp:3630
#38 0x00007fadf49cab98 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3154
#39 0x00007fadf3dc992a in QCoreApplication::notifyInternal2 (receiver=0x559c63e52860, event=0x7ffe8bd00ad0) at ../../include/QtCore/5.15.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#40 0x00007fadf42cc53b in QGuiApplicationPrivate::processMouseEvent (e=e@entry=0x559c63f20740) at kernel/qguiapplication.cpp:2277
#41 0x00007fadf42cdab5 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x559c63f20740) at kernel/qguiapplication.cpp:2002
#42 0x00007fadf42a57ab in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1175
#43 0x00007fadeebf3b2e in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#44 0x00007fadf195bfbd in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fadf195c240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007fadf195c2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fadf3e24232 in QEventDispatcherGlib::processEvents (this=0x559c5f5c2c30, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#48 0x00007fadf3dc843b in QEventLoop::exec (this=this@entry=0x7ffe8bd00e70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#49 0x00007fadf3dd05e4 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#50 0x0000559c5f26b112 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:209
[Inferior 1 (process 4202) detached]

Possible duplicates by query: bug 422533.

Reported using DrKonqi
Comment 1 Nate Graham 2020-12-01 17:52:13 UTC 
#12 0x00007fadaac86f64 in KNSCore::Cache::registerChangedEntry (this=0x559c632f5590, entry=...) at ./src/core/cache.cpp:290
#13 0x00007fadf3e0094e in QtPrivate::QSlotObjectBase::call (a=0x7ffe8bcffe30, r=0x559c632f5590, this=0x559c63450410) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#14 doActivate<false> (sender=0x7fade80175b0, signal_index=9, argv=0x7ffe8bcffe30) at kernel/qobject.cpp:3886
Comment 2 Nate Graham 2020-12-01 17:52:38 UTC 

*** This bug has been marked as a duplicate of bug 429442 ***