Bug 403504

Summary: Printer model crashes Plasma
Product: [Frameworks and Libraries] print-manager Reporter: Louis Moureaux <m_louis30>
Component: appletAssignee: Daniel Nicoletti <dantti12>
Status: RESOLVED WORKSFORME    
Severity: crash CC: plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Louis Moureaux 2019-01-22 13:43:32 UTC 
Application: plasmashell (5.14.5)

Qt Version: 5.11.2
Frameworks Version: 5.54.0
Operating System: Linux 4.15.0-43-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
I have a lot of network printers in my office, and Plasma crashes every now and then in the printer model.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa2a3149840 (LWP 5281))]

Thread 9 (Thread 0x7fa23fdec700 (LWP 13519)):
#0  0x00007fa29c6cf0b4 in __GI___libc_read (fd=42, buf=0x7fa23fdebb9e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fa264ef6ff1 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007fa2655a99fe in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fa2655aa470 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fa2655aa530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fa2655b8399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fa264f262a8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007fa2999076db in start_thread (arg=0x7fa23fdec700) at pthread_create.c:463
#8  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fa24ca50700 (LWP 6404)):
#0  0x00007fa29c6d3bf9 in __GI___poll (fds=0x7fa240003ce0, nfds=1, timeout=9359) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa29654b539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa240000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa24ca4fd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa29cdddbba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580f17185c0) at thread/qthread_unix.cpp:367
#7  0x00007fa2999076db in start_thread (arg=0x7fa24ca50700) at pthread_create.c:463
#8  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fa24f28c700 (LWP 6201)):
#0  0x00007fa29c6d3bf9 in __GI___poll (fds=0x7fa248006070, nfds=1, timeout=553359) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa29654b539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa248000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa24f28bd20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa29cdddbba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa2544d3f77 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580f158d420) at thread/qthread_unix.cpp:367
#8  0x00007fa2999076db in start_thread (arg=0x7fa24f28c700) at pthread_create.c:463
#9  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fa25559e700 (LWP 6076)):
#0  0x00007fa29c6d3bf9 in __GI___poll (fds=0x7fa250004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa29654b539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa250000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa25559dd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa29cdddbba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580f1329020) at thread/qthread_unix.cpp:367
#7  0x00007fa2999076db in start_thread (arg=0x7fa25559e700) at pthread_create.c:463
#8  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fa26f47a700 (LWP 5590)):
#0  0x00007fa296591049 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa29654ac81 in g_main_context_query () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b4b7 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa268000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa26f479cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fa29cdddbba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007fa2a0f77826 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580f0fba360) at thread/qthread_unix.cpp:367
#9  0x00007fa2999076db in start_thread (arg=0x7fa26f47a700) at pthread_create.c:463
#10 0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fa2856c5700 (LWP 5346)):
#0  0x00007fa29c6d3bf9 in __GI___poll (fds=0x7fa278004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa29654b539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa278000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa2856c4d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa29cdddbba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa2a0afc4f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580ee9b0990) at thread/qthread_unix.cpp:367
#8  0x00007fa2999076db in start_thread (arg=0x7fa2856c5700) at pthread_create.c:463
#9  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fa28710b700 (LWP 5303)):
#0  0x00007fa296591049 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa29654aaa3 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa29654b46b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa29d00e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa280000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa28710ad30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fa29cdddbba in QThread::exec() (this=this@entry=0x7fa29e2c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:525
#7  0x00007fa29e04ee45 in QDBusConnectionManager::run() (this=0x7fa29e2c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#8  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x7fa29e2c6d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:367
#9  0x00007fa2999076db in start_thread (arg=0x7fa28710b700) at pthread_create.c:463
#10 0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fa28db73700 (LWP 5296)):
#0  0x00007fa29c6d3bf9 in __GI___poll (fds=0x7fa28db72c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa2a1baa747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa2a1bac36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa2900f5ed9 in QXcbEventReader::run() (this=0x5580ee8ab400) at qxcbconnection.cpp:1391
#4  0x00007fa29cde8adb in QThreadPrivate::start(void*) (arg=0x5580ee8ab400) at thread/qthread_unix.cpp:367
#5  0x00007fa2999076db in start_thread (arg=0x7fa28db73700) at pthread_create.c:463
#6  0x00007fa29c6e088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fa2a3149840 (LWP 5281)):
[KCrash Handler]
#6  0x00007fa2a0a4afe0 in QQmlData::isSignalConnected(QAbstractDeclarativeData*, QObject const*, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa29cfe287a in QObjectPrivate::isDeclarativeSignalConnected(unsigned int) const (signal_index=3, this=<optimized out>) at kernel/qobject_p.h:267
#8  0x00007fa29cfe287a in QMetaObject::activate(QObject*, int, int, void**) (sender=0x5580f4312e00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3646
#9  0x00007fa2a0b3d331 in QQmlDelegateModel::_q_itemsInserted(int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fa2a0b42e75 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fa2a0b432e5 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fa29cfe3139 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x5580f27a5360, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffc6f07fac0) at kernel/qobject.cpp:3786
#13 0x00007fa29cfe3747 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x5580f27a5360, m=m@entry=0x7fa29d4365a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffc6f07fac0) at kernel/qobject.cpp:3633
#14 0x00007fa29cf5ca0e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) (this=this@entry=0x5580f27a5360, _t1=..., _t2=<optimized out>, _t3=<optimized out>, _t4=...) at .moc/moc_qabstractitemmodel.cpp:587
#15 0x00007fa29cf642bb in QAbstractItemModel::endInsertRows() (this=0x5580f27a5360) at itemmodels/qabstractitemmodel.cpp:2731
#16 0x00007fa29cf86025 in QSortFilterProxyModelPrivate::insert_source_items(QVector<int>&, QVector<int>&, QVector<int> const&, QModelIndex const&, Qt::Orientation, bool) (this=this@entry=0x5580f27a5410, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., orient=orient@entry=Qt::Vertical, emit_signal=true) at itemmodels/qsortfilterproxymodel.cpp:762
#17 0x00007fa29cf87e2c in QSortFilterProxyModelPrivate::source_items_inserted(QModelIndex const&, int, int, Qt::Orientation) (this=this@entry=0x5580f27a5410, source_parent=..., start=start@entry=0, end=end@entry=0, orient=orient@entry=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:873
#18 0x00007fa29cf89e5d in QSortFilterProxyModelPrivate::_q_sourceRowsInserted(QModelIndex const&, int, int) (this=0x5580f27a5410, source_parent=..., start=0, end=0) at itemmodels/qsortfilterproxymodel.cpp:1504
#19 0x00007fa29cf8b5d9 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:216
#20 0x00007fa29cfe3075 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x5580eeaed6a0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffc6f07fe70) at kernel/qobject.cpp:3771
#21 0x00007fa29cfe3747 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x5580eeaed6a0, m=m@entry=0x7fa29d4365a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffc6f07fe70) at kernel/qobject.cpp:3633
#22 0x00007fa29cf5ca0e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) (this=this@entry=0x5580eeaed6a0, _t1=..., _t2=<optimized out>, _t3=<optimized out>, _t4=...) at .moc/moc_qabstractitemmodel.cpp:587
#23 0x00007fa29cf642bb in QAbstractItemModel::endInsertRows() (this=this@entry=0x5580eeaed6a0) at itemmodels/qabstractitemmodel.cpp:2731
#24 0x00007fa29d8eafce in QStandardItemModelPrivate::rowsInserted(QStandardItem*, int, int) (this=<optimized out>, parent=parent@entry=0x5580eeb07ab0, row=row@entry=0, count=count@entry=1) at itemmodels/qstandarditemmodel.cpp:653
#25 0x00007fa29d8eb69f in QStandardItemPrivate::insertRows(int, int, QList<QStandardItem*> const&) (this=0x5580ef1b12d0, row=<optimized out>, count=<optimized out>, items=...) at itemmodels/qstandarditemmodel.cpp:525
#26 0x00007fa2544ede95 in PrinterModel::insertDest(int, KCupsPrinter const&) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#27 0x00007fa2544ee469 in PrinterModel::insertUpdatePrinterFinished(KCupsRequest*) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#28 0x00007fa29cfe3be2 in QObject::event(QEvent*) (this=0x5580eeaed6a0, e=<optimized out>) at kernel/qobject.cpp:1251
#29 0x00007fa29e8a4e1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x5580ee8bb440, receiver=receiver@entry=0x5580eeaed6a0, e=e@entry=0x7fa248014d90) at kernel/qapplication.cpp:3727
#30 0x00007fa29e8ac3ef in QApplication::notify(QObject*, QEvent*) (this=0x7ffc6f080720, receiver=0x5580eeaed6a0, e=0x7fa248014d90) at kernel/qapplication.cpp:3486
#31 0x00007fa29cfb3fe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x5580eeaed6a0, event=event@entry=0x7fa248014d90) at kernel/qcoreapplication.cpp:1048
#32 0x00007fa29cfb6b2d in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7fa248014d90, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#33 0x00007fa29cfb6b2d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x5580ee8b06f0) at kernel/qcoreapplication.cpp:1745
#34 0x00007fa29cfb70e8 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#35 0x00007fa29d00e9f3 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x5580ee901d50) at kernel/qeventdispatcher_glib.cpp:276
#36 0x00007fa29654b387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fa29654b5c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fa29654b64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fa29d00e02f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5580ee913de0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#40 0x00007fa290181761 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5580ee913de0, flags=...) at qeventdispatcher_glib.cpp:69
#41 0x00007fa29cfb230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc6f080600, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#42 0x00007fa29cfbb4d0 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1336
#43 0x00005580ed2a5fa5 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:212

Reported using DrKonqi
Comment 1 Louis Moureaux 2022-05-19 20:33:07 UTC 
Can't recall seeing this crash in a long time.