Application: systemsettings5 (5.16.80)

Qt Version: 5.12.3
Frameworks Version: 5.62.0
Operating System: Linux 5.2.5-050205-generic x86_64
Distribution: KDE neon Unstable Edition

-- Information about the crash:
- What I was doing when the application crashed:
I was navigating through several KCMs, system settings crashed after I leave kamera KCM
by clicking on another section under "Removable storage".

The crash can be reproduced sometimes.

-- 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 0x7fb302055800 (LWP 4094))]

Thread 9 (Thread 0x7fb2af9ff700 (LWP 4133)):
#0  0x00007fb2fd5acbf9 in __GI___poll (fds=0x7fb2a8007ab0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb2f6a335c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fb2a8007ab0, timeout=<optimized out>, context=0x7fb2a80108d0) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fb2a80108d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fb2f6a336dc in g_main_context_iteration (context=0x7fb2a80108d0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fb2fdeefdcb in QEventDispatcherGlib::processEvents (this=0x7fb2a801ffd0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fb2af9feda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fb2fdcb84ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007fb2fdcb9c72 in QThreadPrivate::start (arg=0x5640edeed3a0) at thread/qthread_unix.cpp:361
#8  0x00007fb2f8df26db in start_thread (arg=0x7fb2af9ff700) at pthread_create.c:463
#9  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fb2b4dad700 (LWP 4132)):
#0  0x00007fb2fd5acbf9 in __GI___poll (fds=0x7fb2b00ce510, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb2f6a335c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fb2b00ce510, timeout=<optimized out>, context=0x7fb2b002d770) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fb2b002d770, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fb2f6a336dc in g_main_context_iteration (context=0x7fb2b002d770, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fb2fdeefdcb in QEventDispatcherGlib::processEvents (this=0x7fb2b0008f30, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fb2b4dacda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fb2fdcb84ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007fb2fdcb9c72 in QThreadPrivate::start (arg=0x5640ea348260) at thread/qthread_unix.cpp:361
#8  0x00007fb2f8df26db in start_thread (arg=0x7fb2b4dad700) at pthread_create.c:463
#9  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fb2acd0f700 (LWP 4121)):
#0  0x00007fb2fd5a80b4 in __GI___libc_read (fd=48, buf=buf@entry=0x7fb2acd0ecd0, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fb2f6a782d0 in read (__nbytes=16, __buf=0x7fb2acd0ecd0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fb2a4003b70) at ../../../../glib/gwakeup.c:210
#3  0x00007fb2f6a330b7 in g_main_context_check (context=context@entry=0x5640e32f1720, max_priority=2147483647, fds=fds@entry=0x5640e7682830, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#4  0x00007fb2f6a33570 in g_main_context_iterate (context=0x5640e32f1720, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#5  0x00007fb2f6a33962 in g_main_loop_run (loop=0x5640e6ab5310) at ../../../../glib/gmain.c:4098
#6  0x00007fb2c8e5d0e6 in gdbus_shared_thread_func (user_data=0x5640e6d7a0a0) at ../../../../gio/gdbusprivate.c:275
#7  0x00007fb2f6a5b195 in g_thread_proxy (data=0x5640ebd9cca0) at ../../../../glib/gthread.c:784
#8  0x00007fb2f8df26db in start_thread (arg=0x7fb2acd0f700) at pthread_create.c:463
#9  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fb2ae383700 (LWP 4120)):
#0  0x00007fb2fd5acbf9 in __GI___poll (fds=0x5640ea634720, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb2f6a335c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x5640ea634720, timeout=<optimized out>, context=0x5640e6fd26e0) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x5640e6fd26e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fb2f6a336dc in g_main_context_iteration (context=0x5640e6fd26e0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fb2f6a33721 in glib_worker_main (data=<optimized out>) at ../../../../glib/gmain.c:5772
#5  0x00007fb2f6a5b195 in g_thread_proxy (data=0x5640ebd9cc00) at ../../../../glib/gthread.c:784
#6  0x00007fb2f8df26db in start_thread (arg=0x7fb2ae383700) at pthread_create.c:463
#7  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fb2c3952700 (LWP 4103)):
#0  _dl_update_slotinfo (req_modid=2) at ../elf/dl-tls.c:625
#1  0x00007fb301e8d87c in update_get_addr (ti=0x7fb2fe341670) at ../elf/dl-tls.c:799
#2  0x00007fb301e93a28 in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:55
#3  0x00007fb2fdcb8c26 in get_thread_data () at thread/qthread_unix.cpp:184
#4  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:239
#5  0x00007fb2fdeefcaa in postEventSourcePrepare (s=0x7fb2bc0047a0, timeout=timeout@entry=0x7fb2c3951bb4) at kernel/qeventdispatcher_glib.cpp:252
#6  0x00007fb2f6a32b28 in g_main_context_prepare (context=context@entry=0x7fb2bc000bf0, priority=priority@entry=0x7fb2c3951c40) at ../../../../glib/gmain.c:3474
#7  0x00007fb2f6a334fb in g_main_context_iterate (context=context@entry=0x7fb2bc000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3882
#8  0x00007fb2f6a336dc in g_main_context_iteration (context=0x7fb2bc000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#9  0x00007fb2fdeefdcb in QEventDispatcherGlib::processEvents (this=0x7fb2bc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#10 0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fb2c3951d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#11 0x00007fb2fdcb84ca in QThread::exec (this=this@entry=0x5640e3c4dd00) at thread/qthread.cpp:531
#12 0x00007fb2fba72115 in QQmlThreadPrivate::run (this=0x5640e3c4dd00) at qml/ftw/qqmlthread.cpp:148
#13 0x00007fb2fdcb9c72 in QThreadPrivate::start (arg=0x5640e3c4dd00) at thread/qthread_unix.cpp:361
#14 0x00007fb2f8df26db in start_thread (arg=0x7fb2c3952700) at pthread_create.c:463
#15 0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fb2d5b34700 (LWP 4097)):
#0  0x00007fb2fd5acbf9 in __GI___poll (fds=0x7fb2d0004e00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb2f6a335c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fb2d0004e00, timeout=<optimized out>, context=0x7fb2d0000bf0) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fb2d0000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fb2f6a336dc in g_main_context_iteration (context=0x7fb2d0000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fb2fdeefdcb in QEventDispatcherGlib::processEvents (this=0x7fb2d0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fb2d5b33d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fb2fdcb84ca in QThread::exec (this=this@entry=0x5640e1175430) at thread/qthread.cpp:531
#7  0x00007fb2fba72115 in QQmlThreadPrivate::run (this=0x5640e1175430) at qml/ftw/qqmlthread.cpp:148
#8  0x00007fb2fdcb9c72 in QThreadPrivate::start (arg=0x5640e1175430) at thread/qthread_unix.cpp:361
#9  0x00007fb2f8df26db in start_thread (arg=0x7fb2d5b34700) at pthread_create.c:463
#10 0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fb2e45e4700 (LWP 4096)):
#0  0x00007fb2f8df89f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5640e0d6bd3c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5640e0d6bce8, cond=0x5640e0d6bd10) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5640e0d6bd10, mutex=0x5640e0d6bce8) at pthread_cond_wait.c:655
#3  0x00007fb2e5a090aa in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fb2e5a08dd7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fb2f8df26db in start_thread (arg=0x7fb2e45e4700) at pthread_create.c:463
#6  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fb2ed65f700 (LWP 4095)):
#0  0x00007fb2f6a33181 in g_main_context_dispatch (context=context@entry=0x7fb2e8000bf0) at ../../../../glib/gmain.c:3835
#1  0x00007fb2f6a33650 in g_main_context_iterate (context=context@entry=0x7fb2e8000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3902
#2  0x00007fb2f6a336dc in g_main_context_iteration (context=0x7fb2e8000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#3  0x00007fb2fdeefdcb in QEventDispatcherGlib::processEvents (this=0x7fb2e8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fb2ed65ed70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007fb2fdcb84ca in QThread::exec (this=this@entry=0x7fb2fe5d5d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:531
#6  0x00007fb2fe35e015 in QDBusConnectionManager::run (this=0x7fb2fe5d5d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#7  0x00007fb2fdcb9c72 in QThreadPrivate::start (arg=0x7fb2fe5d5d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361
#8  0x00007fb2f8df26db in start_thread (arg=0x7fb2ed65f700) at pthread_create.c:463
#9  0x00007fb2fd5b988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fb302055800 (LWP 4094)):
[KCrash Handler]
#7  QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::operator-> (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:118
#8  qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > (ptr=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:1038
#9  QStandardItemModel::d_func (this=0x0) at itemmodels/qstandarditemmodel.h:434
#10 QStandardItemModel::clear (this=0x0) at itemmodels/qstandarditemmodel.cpp:2259
#11 0x00007fb28ea1a49f in KKameraConfig::populateDeviceListView (this=this@entry=0x5640f096e0d0) at ./kcontrol/kamera.cpp:176
#12 0x00007fb28ea1bda8 in KKameraConfig::load (this=<optimized out>) at ./kcontrol/kamera.cpp:270
#13 0x00007fb300e63831 in KCModule::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at ./obj-x86_64-linux-gnu/src/KF5ConfigWidgets_autogen/EWIEGA46WW/moc_kcmodule.cpp:110
#14 0x00007fb2fdec33e2 in QObject::event (this=this@entry=0x5640f096e0d0, e=e@entry=0x5640e2edb1a0) at kernel/qobject.cpp:1260
#15 0x00007fb2fef5e0db in QWidget::event (this=0x5640f096e0d0, event=0x5640e2edb1a0) at kernel/qwidget.cpp:9388
#16 0x00007fb2fef1d65c in QApplicationPrivate::notify_helper (this=this@entry=0x5640e0cd68b0, receiver=receiver@entry=0x5640f096e0d0, e=e@entry=0x5640e2edb1a0) at kernel/qapplication.cpp:3736
#17 0x00007fb2fef24b90 in QApplication::notify (this=0x7fff13ae5ab0, receiver=0x5640f096e0d0, e=0x5640e2edb1a0) at kernel/qapplication.cpp:3483
#18 0x00007fb2fde92d18 in QCoreApplication::notifyInternal2 (receiver=0x5640f096e0d0, event=0x5640e2edb1a0) at kernel/qcoreapplication.cpp:1060
#19 0x00007fb2fde92eee in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x5640e2edb1a0) at kernel/qcoreapplication.cpp:1450
#20 0x00007fb2fde958d7 in QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x5640e0ccdff0) at kernel/qcoreapplication.cpp:1799
#21 0x00007fb2fde95e78 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1653
#22 0x00007fb2fdef0793 in postEventSourceDispatch (s=s@entry=0x5640e0cfb660) at kernel/qeventdispatcher_glib.cpp:276
#23 0x00007fb2f6a33417 in g_main_dispatch (context=0x5640e0d13640) at ../../../../glib/gmain.c:3176
#24 g_main_context_dispatch (context=context@entry=0x5640e0d13640) at ../../../../glib/gmain.c:3829
#25 0x00007fb2f6a33650 in g_main_context_iterate (context=context@entry=0x5640e0d13640, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3902
#26 0x00007fb2f6a336dc in g_main_context_iteration (context=0x5640e0d13640, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#27 0x00007fb2fdeefdaf in QEventDispatcherGlib::processEvents (this=0x5640e0d0a5b0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00007fb2fde9103a in QEventLoop::exec (this=this@entry=0x7fff13ae59d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#29 0x00007fb2fde9a170 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1363
#30 0x00005640dff50218 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:71

Possible duplicates by query: bug 411378, bug 411089, bug 410786, bug 409794, bug 409778.

Reported using DrKonqi