Bug 422438

Summary: Clicking on the "Screen Locking" settings applet causes crash
Product: [Applications] systemsettings Reporter: Sam Birch <bugs.kde.org>
Component: kcm_screenlockerAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED FIXED    
Severity: crash CC: nate
Priority: NOR Keywords: drkonqi
Version: 5.17.5   
Target Milestone: ---   
Platform: Debian stable   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Sam Birch 2020-06-04 02:52:12 UTC 
Application: systemsettings5 (5.17.5)

Qt Version: 5.12.5
Frameworks Version: 5.70.0
Operating System: Linux 5.6.0-2-amd64 x86_64
Distribution: Debian GNU/Linux bullseye/sid

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

1. Open System Settings
2. Click "Workspace Behavior"
3. Click "Screen Locking"
4. Wait 1-2 seconds

(This is a fresh Debian Testing KDE install -- installed today! -- that I have customized very little.)

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc5153c2800 (LWP 2064))]

Thread 11 (Thread 0x7fc4e5c71700 (LWP 2078)):
#0  0x00007fc51778fe7d in g_source_unref_internal (source=0x7fc4d40050e0, context=0x7fc4d4000c30, have_lock=1) at ../../../glib/gmain.c:2184
#1  0x00007fc517791875 in g_source_iter_next (iter=iter@entry=0x7fc4e5c70bc0, source=source@entry=0x7fc4e5c70bb8) at ../../../glib/gmain.c:1049
#2  0x00007fc517792cbb in g_main_context_prepare (context=context@entry=0x7fc4d4000c30, priority=priority@entry=0x7fc4e5c70c40) at ../../../glib/gmain.c:3597
#3  0x00007fc51779372b in g_main_context_iterate (context=context@entry=0x7fc4d4000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4027
#4  0x00007fc51779391f in g_main_context_iteration (context=0x7fc4d4000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#5  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc4d4000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc4e5c70d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x55cdc2f465a0) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007fc518ef4845 in QQmlThreadPrivate::run (this=0x55cdc2f465a0) at qml/ftw/qqmlthread.cpp:148
#9  0x00007fc519bbd872 in QThreadPrivate::start (arg=0x55cdc2f465a0) at thread/qthread_unix.cpp:361
#10 0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fc4e6eb2700 (LWP 2077)):
#0  __GI___libc_read (nbytes=16, buf=0x7fc4e6eb1b70, fd=19) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=19, buf=buf@entry=0x7fc4e6eb1b70, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fc5177daf5f in read (__nbytes=16, __buf=0x7fc4e6eb1b70, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7fc4e0003970) at ../../../glib/gwakeup.c:210
#4  0x00007fc51779334e in g_main_context_check (context=context@entry=0x7fc4dc000c30, max_priority=2147483647, fds=fds@entry=0x7fc4dc0025e0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3825
#5  0x00007fc5177937a2 in g_main_context_iterate (context=context@entry=0x7fc4dc000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#6  0x00007fc51779391f in g_main_context_iteration (context=0x7fc4dc000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#7  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc4dc000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc4e6eb1d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#9  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x55cdbd16a070) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#10 0x00007fc518ef4845 in QQmlThreadPrivate::run (this=0x55cdbd16a070) at qml/ftw/qqmlthread.cpp:148
#11 0x00007fc519bbd872 in QThreadPrivate::start (arg=0x55cdbd16a070) at thread/qthread_unix.cpp:361
#12 0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fc4ec994700 (LWP 2075)):
#0  __GI___libc_read (nbytes=16, buf=0x7fc4ec993b70, fd=18) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=18, buf=buf@entry=0x7fc4ec993b70, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fc5177daf5f in read (__nbytes=16, __buf=0x7fc4ec993b70, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7fc4e8003d80) at ../../../glib/gwakeup.c:210
#4  0x00007fc51779334e in g_main_context_check (context=context@entry=0x7fc4e0000c30, max_priority=2147483647, fds=fds@entry=0x7fc4e00029e0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3825
#5  0x00007fc5177937a2 in g_main_context_iterate (context=context@entry=0x7fc4e0000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#6  0x00007fc51779391f in g_main_context_iteration (context=0x7fc4e0000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#7  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc4e0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc4ec993d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#9  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x55cdc2dc6c90) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#10 0x00007fc518ef4845 in QQmlThreadPrivate::run (this=0x55cdc2dc6c90) at qml/ftw/qqmlthread.cpp:148
#11 0x00007fc519bbd872 in QThreadPrivate::start (arg=0x55cdc2dc6c90) at thread/qthread_unix.cpp:361
#12 0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fc4ef0dd700 (LWP 2073)):
#0  0x00007fc5177df8a9 in g_mutex_lock (mutex=mutex@entry=0x7fc4e8000c30) at ../../../glib/gthread-posix.c:1481
#1  0x00007fc5177933b6 in g_main_context_dispatch (context=context@entry=0x7fc4e8000c30) at ../../../glib/gmain.c:3968
#2  0x00007fc517793890 in g_main_context_iterate (context=context@entry=0x7fc4e8000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4047
#3  0x00007fc51779391f in g_main_context_iteration (context=0x7fc4e8000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc4e8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc4ef0dcd80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x55cdbcf64030) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007fc518ef4845 in QQmlThreadPrivate::run (this=0x55cdbcf64030) at qml/ftw/qqmlthread.cpp:148
#8  0x00007fc519bbd872 in QThreadPrivate::start (arg=0x55cdbcf64030) at thread/qthread_unix.cpp:361
#9  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fc5091f9700 (LWP 2072)):
#0  __GI___libc_read (nbytes=16, buf=0x7fc5091f8b70, fd=13) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=13, buf=buf@entry=0x7fc5091f8b70, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fc5177daf5f in read (__nbytes=16, __buf=0x7fc5091f8b70, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7fc5040039a0) at ../../../glib/gwakeup.c:210
#4  0x00007fc51779334e in g_main_context_check (context=context@entry=0x7fc4f4000c30, max_priority=2147483647, fds=fds@entry=0x7fc4f40025e0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3825
#5  0x00007fc5177937a2 in g_main_context_iterate (context=context@entry=0x7fc4f4000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#6  0x00007fc51779391f in g_main_context_iteration (context=0x7fc4f4000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#7  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc4f4000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc5091f8d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#9  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x55cdbcc45c40) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#10 0x00007fc518ef4845 in QQmlThreadPrivate::run (this=0x55cdbcc45c40) at qml/ftw/qqmlthread.cpp:148
#11 0x00007fc519bbd872 in QThreadPrivate::start (arg=0x55cdbcc45c40) at thread/qthread_unix.cpp:361
#12 0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fc50a7fc700 (LWP 2070)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55cdbcc5eafc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cdbcc5eaa8, cond=0x55cdbcc5ead0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cdbcc5ead0, mutex=0x55cdbcc5eaa8) at pthread_cond_wait.c:638
#3  0x00007fc510a199fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fc510a19617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fc50affd700 (LWP 2069)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55cdbcc5eafc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cdbcc5eaa8, cond=0x55cdbcc5ead0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cdbcc5ead0, mutex=0x55cdbcc5eaa8) at pthread_cond_wait.c:638
#3  0x00007fc510a199fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fc510a19617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fc50b7fe700 (LWP 2068)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55cdbcc5eafc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cdbcc5eaa8, cond=0x55cdbcc5ead0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cdbcc5ead0, mutex=0x55cdbcc5eaa8) at pthread_cond_wait.c:638
#3  0x00007fc510a199fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fc510a19617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fc50bfff700 (LWP 2067)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55cdbcc5eafc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cdbcc5eaa8, cond=0x55cdbcc5ead0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55cdbcc5ead0, mutex=0x55cdbcc5eaa8) at pthread_cond_wait.c:638
#3  0x00007fc510a199fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fc510a19617 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fc512f8c700 (LWP 2066)):
#0  0x00007fc517791858 in g_source_iter_next (iter=iter@entry=0x7fc512f8bbb0, source=source@entry=0x7fc512f8bba8) at ../../../glib/gmain.c:1046
#1  0x00007fc51779314f in g_main_context_check (context=context@entry=0x7fc504000c30, max_priority=2147483647, fds=fds@entry=0x7fc5040029e0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3860
#2  0x00007fc5177937a2 in g_main_context_iterate (context=context@entry=0x7fc504000c30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#3  0x00007fc51779391f in g_main_context_iteration (context=0x7fc504000c30, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007fc519dd27db in QEventDispatcherGlib::processEvents (this=0x7fc504000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7fc512f8bd70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007fc519bbc6f1 in QThread::exec (this=this@entry=0x7fc51a0d1d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007fc51a0504e6 in QDBusConnectionManager::run (this=0x7fc51a0d1d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#8  0x00007fc519bbd872 in QThreadPrivate::start (arg=0x7fc51a0d1d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361
#9  0x00007fc518239f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007fc51986d31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fc5153c2800 (LWP 2064)):
[KCrash Handler]
#6  0x00007fc51ae0900c in KAboutData::displayName (this=0x55cdc2ec8ae0) at ./src/lib/kaboutdata.cpp:797
#7  0x00007fc51b2773d6 in KQuickAddons::ConfigModule::name (this=<optimized out>) at ./src/quickaddons/configmodule.cpp:286
#8  0x00007fc51b2797f6 in KQuickAddons::ConfigModule::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/quickaddons/KF5QuickAddons_autogen/include/moc_configmodule.cpp:326
#9  0x00007fc518d86a8c in QQmlPropertyData::readProperty (property=0x7ffc61f0c720, target=<optimized out>, this=0x7fc4e00faed8) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:328
#10 loadProperty (v4=0x55cdc2e2f190, object=0x55cdc2f0b700, property=...) at jsruntime/qv4qobjectwrapper.cpp:154
#11 0x00007fc518da6b49 in QV4::Moth::VME::interpret (frame=0x7ffc61f0c950, engine=0x55cdc2e2f190, code=0x7fc4e708c282 ":\001\030\006\002") at jsruntime/qv4vme_moth.cpp:621
#12 0x00007fc518dab6df in QV4::Moth::VME::exec (frame=frame@entry=0x7ffc61f0c950, engine=engine@entry=0x55cdc2e2f190) at jsruntime/qv4vme_moth.cpp:447
#13 0x00007fc518d39ee7 in QV4::Function::call (this=this@entry=0x55cdc34d9c30, thisObject=<optimized out>, argv=argv@entry=0x7fc4e7bc1500, argc=<optimized out>, context=<optimized out>) at jsruntime/qv4function.cpp:68
#14 0x00007fc518ebecd7 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x55cdc34afd50, callData=callData@entry=0x7fc4e7bc14d0, isUndefined=isUndefined@entry=0x7ffc61f0cb4f) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:194
#15 0x00007fc518ec47ef in QQmlBinding::evaluate (this=this@entry=0x55cdc34afd50, isUndefined=isUndefined@entry=0x7ffc61f0cb4f) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:95
#16 0x00007fc518ec9216 in QQmlNonbindingBinding::doUpdate (this=0x55cdc34afd50, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:245
#17 0x00007fc518ec5aa4 in QQmlBinding::update (this=0x55cdc34afd50, flags=...) at qml/qqmlbinding.cpp:185
#18 0x00007fc518e5b9d6 in QQmlContextData::refreshExpressionsRecursive (this=<optimized out>, expression=0x55cdc34afd50) at qml/qqmlcontext.cpp:705
#19 0x00007fc518e5b9c1 in QQmlContextData::refreshExpressionsRecursive (this=<optimized out>, expression=0x55cdc35c3020) at qml/qqmlcontext.cpp:702
#20 0x00007fc518e5b9c1 in QQmlContextData::refreshExpressionsRecursive (this=this@entry=0x55cdc2f459c0, expression=0x55cdc35c31c0) at qml/qqmlcontext.cpp:702
#21 0x00007fc518e5be76 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2f459c0, isGlobal=false) at qml/qqmlcontext.cpp:734
#22 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc34ef110, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#23 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc34fba90, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#24 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2edfa20, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#25 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc35d1110, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#26 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc408e500, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#27 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc3613db0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#28 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2edc4b0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#29 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2e8b1e0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#30 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc3508b70, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#31 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc3491270, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#32 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc34d6070, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#33 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc4089e00, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#34 0x00007fc518e5bf93 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc36292f0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:729
#35 0x00007fc518e5bf30 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2e74df0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:747
#36 0x00007fc518e5bf30 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc344cd30, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:747
#37 0x00007fc518e5bf30 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc3b14650, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:747
#38 0x00007fc518e5bf77 in QQmlContextData::refreshExpressionsRecursive (this=0x55cdc2f454a0, isGlobal=<optimized out>) at qml/qqmlcontext.cpp:724
#39 0x00007fc518e5c155 in QQmlContextData::refreshExpressions (this=this@entry=0x55cdc34e1eb0) at qml/qqmlcontext.cpp:782
#40 0x00007fc518e3d558 in QQmlEngine::retranslate (this=<optimized out>) at qml/qqmlengine.cpp:1473
#41 0x00007fc519da7daa in QObject::event (this=0x55cdc2db50a0, e=<optimized out>) at kernel/qobject.cpp:1260
#42 0x00007fc51a812c32 in QApplicationPrivate::notify_helper (this=this@entry=0x55cdbc7f8e80, receiver=receiver@entry=0x55cdc2db50a0, e=e@entry=0x7fc4f4226da0) at kernel/qapplication.cpp:3700
#43 0x00007fc51a81c190 in QApplication::notify (this=0x7ffc61f0d850, receiver=0x55cdc2db50a0, e=0x7fc4f4226da0) at kernel/qapplication.cpp:3446
#44 0x00007fc519d7ca52 in QCoreApplication::notifyInternal2 (receiver=0x55cdc2db50a0, event=0x7fc4f4226da0) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
#45 0x00007fc519d7f648 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55cdbc7ff020) at kernel/qcoreapplication.cpp:1825
#46 0x00007fc519dd3183 in postEventSourceDispatch (s=0x55cdbc85bce0) at kernel/qeventdispatcher_glib.cpp:277
#47 0x00007fc51779360d in g_main_dispatch (context=0x7fc50c005010) at ../../../glib/gmain.c:3309
#48 g_main_context_dispatch (context=context@entry=0x7fc50c005010) at ../../../glib/gmain.c:3974
#49 0x00007fc517793890 in g_main_context_iterate (context=context@entry=0x7fc50c005010, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4047
#50 0x00007fc51779391f in g_main_context_iteration (context=0x7fc50c005010, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#51 0x00007fc519dd27c1 in QEventDispatcherGlib::processEvents (this=0x55cdbc85e490, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#52 0x00007fc519d7b6db in QEventLoop::exec (this=this@entry=0x7ffc61f0d770, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#53 0x00007fc519d83182 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#54 0x000055cdbb71b64a in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:71
[Inferior 1 (process 2064) detached]

Possible duplicates by query: bug 398640.

Reported using DrKonqi
Comment 1 Nate Graham 2020-12-09 18:33:28 UTC 
This page was rewritten in QML since the bug report was filed, so I highly doubt that it would crash the same way now. Please feel free to file new bug reports if you still get crashes with the new version in Plasma 5.20 or later. :)