[systemsettings] [Bug 329918] New: KDE Systrem Settings window crashes repeatably.

William Austin wwaustin at gmail.com
Mon Jan 13 18:44:57 GMT 2014 

https://bugs.kde.org/show_bug.cgi?id=329918

            Bug ID: 329918
           Summary: KDE Systrem Settings window crashes repeatably.
    Classification: Unclassified
           Product: systemsettings
           Version: 4.11.5
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: wwaustin at gmail.com

Application: systemsettings (4.11.5)
KDE Platform Version: 4.11.5
Qt Version: 4.8.5
Operating System: Linux 3.12.6-200.fc19.x86_64 x86_64
Distribution: "Fedora release 19 (Schrödinger’s Cat)"

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

I brought up the KDE "System Settings" utility from the "Settings" menu
(default menu), and then under "Hardware" I double clicked on "Printers".
The application immediately crashed.

- Unusual behavior I noticed:  None at all - the behavior is the same whether
no other apps are loaded or many are.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f92cc1778c0 (LWP 18751))]

Thread 3 (Thread 0x7f92bd223700 (LWP 18753)):
#0  0x0000003ea4086f6a in g_mutex_get_impl () from /lib64/libglib-2.0.so.0
#1  0x0000003ea4087249 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#2  0x0000003ea4047780 in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#3  0x0000003ea4048003 in g_main_context_iterate.isra.22 () from
/lib64/libglib-2.0.so.0
#4  0x0000003ea40481ec in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x0000003eac1a7166 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQtCore.so.4
#6  0x0000003eac178ecf in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#7  0x0000003eac1791c5 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#8  0x0000003eac07866f in QThread::exec() () from /lib64/libQtCore.so.4
#9  0x0000003eac15a733 in QInotifyFileSystemWatcherEngine::run() () from
/lib64/libQtCore.so.4
#10 0x0000003eac07ad0f in QThreadPrivate::start(void*) () from
/lib64/libQtCore.so.4
#11 0x0000003ea1c07c53 in start_thread () from /lib64/libpthread.so.0
#12 0x0000003ea10f5dbd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f92b7fff700 (LWP 18756)):
#0  0x0000003ea1c0b565 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x0000003eac07b1e6 in QWaitCondition::wait(QMutex*, unsigned long) () from
/lib64/libQtCore.so.4
#2  0x0000003eac07738b in QSemaphore::acquire(int) () from
/lib64/libQtCore.so.4
#3  0x0000003eac182074 in QMetaMethod::invoke(QObject*, Qt::ConnectionType,
QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument) const () from
/lib64/libQtCore.so.4
#4  0x0000003eac1845b8 in QMetaObject::invokeMethod(QObject*, char const*,
Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from
/lib64/libQtCore.so.4
#5  0x00007f92bc5dd674 in password_cb(char const*, _http_s*, char const*, char
const*, void*) () from /lib64/libkcupslib.so
#6  0x00007f92bc36d51a in cupsDoAuthentication () from /lib64/libcups.so.2
#7  0x00007f92bc37c08a in cupsGetFd () from /lib64/libcups.so.2
#8  0x00007f92bc367f5f in get_cupsd_conf.constprop.1 () from
/lib64/libcups.so.2
#9  0x00007f92bc369280 in cupsAdminGetServerSettings () from
/lib64/libcups.so.2
#10 0x00007f92bc5e61b7 in KCupsRequest::getServerSettings() () from
/lib64/libkcupslib.so
#11 0x00007f92bc5d7765 in KCupsRequest::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) [clone .part.9] () from /lib64/libkcupslib.so
#12 0x0000003eac19232e in QObject::event(QEvent*) () from /lib64/libQtCore.so.4
#13 0x0000003eb01c852c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQtGui.so.4
#14 0x0000003eb01ceaf0 in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQtGui.so.4
#15 0x0000003c2e43fd5a in KApplication::notify(QObject*, QEvent*) () from
/lib64/libkdeui.so.5
#16 0x0000003eac17a26d in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /lib64/libQtCore.so.4
#17 0x0000003eac17d1df in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /lib64/libQtCore.so.4
#18 0x0000003eac1a7883 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /lib64/libQtCore.so.4
#19 0x0000003ea4047df6 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#20 0x0000003ea4048148 in g_main_context_iterate.isra.22 () from
/lib64/libglib-2.0.so.0
#21 0x0000003ea40481ec in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#22 0x0000003eac1a7145 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQtCore.so.4
#23 0x0000003eac178ecf in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#24 0x0000003eac1791c5 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#25 0x0000003eac07866f in QThread::exec() () from /lib64/libQtCore.so.4
#26 0x00007f92bc5de257 in KCupsConnection::run() () from /lib64/libkcupslib.so
#27 0x0000003eac07ad0f in QThreadPrivate::start(void*) () from
/lib64/libQtCore.so.4
#28 0x0000003ea1c07c53 in start_thread () from /lib64/libpthread.so.0
#29 0x0000003ea10f5dbd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f92cc1778c0 (LWP 18751)):
[KCrash Handler]
#5  0x00007f92bc5f21de in PrinterModel::updateDest(QStandardItem*, KCupsPrinter
const&) () from /lib64/libkcupslib.so
#6  0x00007f92bc5f3a8a in PrinterModel::getDestsFinished() () from
/lib64/libkcupslib.so
#7  0x0000003eac19232e in QObject::event(QEvent*) () from /lib64/libQtCore.so.4
#8  0x0000003eb01c852c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQtGui.so.4
#9  0x0000003eb01ceaf0 in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQtGui.so.4
#10 0x0000003c2e43fd5a in KApplication::notify(QObject*, QEvent*) () from
/lib64/libkdeui.so.5
#11 0x0000003eac17a26d in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /lib64/libQtCore.so.4
#12 0x0000003eac17d1df in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /lib64/libQtCore.so.4
#13 0x0000003eac1a7883 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /lib64/libQtCore.so.4
#14 0x0000003ea4047df6 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#15 0x0000003ea4048148 in g_main_context_iterate.isra.22 () from
/lib64/libglib-2.0.so.0
#16 0x0000003ea40481ec in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#17 0x0000003eac1a7145 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQtCore.so.4
#18 0x0000003eb0265016 in
QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /lib64/libQtGui.so.4
#19 0x0000003eac178ecf in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#20 0x0000003eac1791c5 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQtCore.so.4
#21 0x0000003eac17e45b in QCoreApplication::exec() () from
/lib64/libQtCore.so.4
#22 0x000000000040ab5b in main ()

Reported using DrKonqi

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