Bug 385606

Summary:	System Settings crashed after applying fonts changes.
Product:	[Applications] systemsettings	Reporter:	Alexander Popel <omeritara>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	crash	CC:	arojas, simonandric5
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.11.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Alexander Popel 2017-10-11 14:05:56 UTC

Application: systemsettings5 (5.11.0)

Qt Version: 5.9.2
Frameworks Version: 5.38.0
Operating System: Linux 4.13.5-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

Just picked another font in System Settings and applied. Crashes every time after changing at least one category (General, Small, Menu, etc.).

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6fc982a800 (LWP 3059))]

Thread 5 (Thread 0x7f6f9b9e9700 (LWP 3066)):
#0  0x00007f6fbf075664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f6fbf04d761 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f6fbf04ddf6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f6fbf04dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f6fc5d9acf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f6fc5d3e48b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f6fc5b5727e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f6fc3bfdbc9 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f6fc5b5bfcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f6fc121408a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f6fc546824f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f6fa2809700 (LWP 3064)):
#0  0x00007f6fbf0755f9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f6fbf04c81e in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f6fbf04de76 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f6fbf04dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f6fc5d9acf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f6fc5d3e48b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f6fc5b5727e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f6fc3bfdbc9 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f6fc5b5bfcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f6fc121408a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f6fc546824f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f6fad27a700 (LWP 3062)):
#0  0x00007f6fbf075664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f6fbf04dcac in g_main_context_acquire () at /usr/lib/libglib-2.0.so.0
#2  0x00007f6fbf04dd77 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f6fbf04dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f6fc5d9acf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f6fc5d3e48b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f6fc5b5727e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f6fc61b6376 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f6fc5b5bfcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f6fc121408a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f6fc546824f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f6fb64d2700 (LWP 3061)):
#0  0x00007f6fc545dd4b in poll () at /usr/lib/libc.so.6
#1  0x00007f6fc1a978e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f6fc1a99679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f6fb906d85a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f6fc5b5bfcb in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f6fc121408a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f6fc546824f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f6fc982a800 (LWP 3059)):
[KCrash Handler]
#5  0x00007f6fc5400d4a in __strcmp_sse2_unaligned () at /usr/lib/libc.so.6
#6  0x00007f6fbf02a4ba in g_str_equal () at /usr/lib/libglib-2.0.so.0
#7  0x00007f6fbf02bd8c in g_hash_table_lookup () at /usr/lib/libglib-2.0.so.0
#8  0x00007f6fbf009d9f in g_quark_from_static_string () at /usr/lib/libglib-2.0.so.0
#9  0x00007f6f8a80eca5 in  () at /usr/lib/libgobject-2.0.so.0
#10 0x00007f6fc965f57a in call_init.part () at /lib64/ld-linux-x86-64.so.2
#11 0x00007f6fc965f686 in _dl_init () at /lib64/ld-linux-x86-64.so.2
#12 0x00007f6fc9663b5e in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#13 0x00007f6fc54a3f14 in _dl_catch_error () at /usr/lib/libc.so.6
#14 0x00007f6fc966337a in _dl_open () at /lib64/ld-linux-x86-64.so.2
#15 0x00007f6fbf300e86 in  () at /usr/lib/libdl.so.2
#16 0x00007f6fc54a3f14 in _dl_catch_error () at /usr/lib/libc.so.6
#17 0x00007f6fbf301587 in  () at /usr/lib/libdl.so.2
#18 0x00007f6fbf300f22 in dlopen () at /usr/lib/libdl.so.2
#19 0x00007f6f9081bef1 in  () at /usr/lib/libvlccore.so.8
#20 0x00007f6f907ffa1a in  () at /usr/lib/libvlccore.so.8
#21 0x00007f6f90800012 in  () at /usr/lib/libvlccore.so.8
#22 0x00007f6f90800762 in  () at /usr/lib/libvlccore.so.8
#23 0x00007f6f90800b7b in  () at /usr/lib/libvlccore.so.8
#24 0x00007f6f9078422f in libvlc_InternalInit () at /usr/lib/libvlccore.so.8
#25 0x00007f6f90556183 in libvlc_new () at /usr/lib/libvlc.so.5
#26 0x00007f6f90ab9051 in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#27 0x00007f6f90a8c8f3 in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#28 0x00007f6f90abd7b8 in qt_plugin_instance () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#29 0x00007f6fc5d22ae7 in QPluginLoader::instance() () at /usr/lib/libQt5Core.so.5
#30 0x00007f6faf663380 in  () at /usr/lib/libphonon4qt5.so.4
#31 0x00007f6faf6657ec in  () at /usr/lib/libphonon4qt5.so.4
#32 0x00007f6faf66619e in  () at /usr/lib/libphonon4qt5.so.4
#33 0x00007f6faf66702c in Phonon::Factory::backend(bool) () at /usr/lib/libphonon4qt5.so.4
#34 0x00007f6faf667919 in  () at /usr/lib/libphonon4qt5.so.4
#35 0x00007f6faf6594d1 in  () at /usr/lib/libphonon4qt5.so.4
#36 0x00007f6fb490b454 in  () at /usr/lib/libKF5Notifications.so.5
#37 0x00007f6fb48dd4ea in  () at /usr/lib/libKF5Notifications.so.5
#38 0x00007f6fb48da326 in KNotification::sendEvent() () at /usr/lib/libKF5Notifications.so.5
#39 0x00007f6fc5d70662 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#40 0x00007f6fc7902f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f6fc790aa06 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#42 0x00007f6fc5d40060 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#43 0x00007f6fc5d428b6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#44 0x00007f6fc5d9b6e4 in  () at /usr/lib/libQt5Core.so.5
#45 0x00007f6fbf04c270 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#46 0x00007f6fbf04df69 in  () at /usr/lib/libglib-2.0.so.0
#47 0x00007f6fbf04dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#48 0x00007f6fc5d9acd1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#49 0x00007f6fc5d3e48b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#50 0x00007f6fc7af6e8b in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#51 0x00007f6fc80ca57b in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QIcon const&, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&, QMessageBox::Icon) () at /usr/lib/libKF5WidgetsAddons.so.5
#52 0x00007f6fc80ca795 in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) () at /usr/lib/libKF5WidgetsAddons.so.5
#53 0x00007f6fc80d0b00 in KMessageBox::informationList(QWidget*, QString const&, QStringList const&, QString const&, QString const&, QFlags<KMessageBox::Option>) () at /usr/lib/libKF5WidgetsAddons.so.5
#54 0x00007f6fc80d0c5a in KMessageBox::information(QWidget*, QString const&, QString const&, QString const&, QFlags<KMessageBox::Option>) () at /usr/lib/libKF5WidgetsAddons.so.5
#55 0x00007f6f91857284 in  () at /usr/lib/qt/plugins/kcm_fonts.so
#56 0x00007f6fc9206138 in KCModuleProxy::save() () at /usr/lib/libKF5KCMUtils.so.5
#57 0x00007f6fc9446682 in ModuleView::moduleSave(KCModuleProxy*) () at /usr/lib/libsystemsettingsview.so.3
#58 0x00007f6fc944a2eb in  () at /usr/lib/libsystemsettingsview.so.3
#59 0x00007f6fc5d6fc16 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#60 0x00007f6fc79f7ff3 in QAbstractButton::clicked(bool) () at /usr/lib/libQt5Widgets.so.5
#61 0x00007f6fc79f820c in  () at /usr/lib/libQt5Widgets.so.5
#62 0x00007f6fc79f964c in  () at /usr/lib/libQt5Widgets.so.5
#63 0x00007f6fc79f9845 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#64 0x00007f6fc7942a08 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#65 0x00007f6fc7902f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#66 0x00007f6fc790af81 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#67 0x00007f6fc5d40060 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#68 0x00007f6fc7909f0a in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/libQt5Widgets.so.5
#69 0x00007f6fc795dd81 in  () at /usr/lib/libQt5Widgets.so.5
#70 0x00007f6fc79604c1 in  () at /usr/lib/libQt5Widgets.so.5
#71 0x00007f6fc7902f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#72 0x00007f6fc790aa06 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#73 0x00007f6fc5d40060 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#74 0x00007f6fc71443d4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#75 0x00007f6fc7145f36 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#76 0x00007f6fc711d48c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#77 0x00007f6fb90d24b1 in  () at /usr/lib/libQt5XcbQpa.so.5
#78 0x00007f6fbf04c270 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#79 0x00007f6fbf04df69 in  () at /usr/lib/libglib-2.0.so.0
#80 0x00007f6fbf04dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#81 0x00007f6fc5d9acd1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#82 0x00007f6fc5d3e48b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#83 0x00007f6fc5d474d8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#84 0x000056447cca9c34 in  ()
#85 0x00007f6fc5392f6a in __libc_start_main () at /usr/lib/libc.so.6
#86 0x000056447cca9cba in _start ()

Reported using DrKonqi

Comment 1 Alexander Popel 2017-10-11 14:33:34 UTC

Well, it seems like I fixed this by installing glib2-2.54.1-2. I just tried to fix Dolphin dialogs crashes, but it seems that this crash also happened because of dialog that System Settings invokes after applying font changes.