Bug 344758

Summary:	Homescreen
Product:	[Frameworks and Libraries] Akonadi	Reporter:	Noel <noel.ebinger>
Component:	general	Assignee:	kdepim bugs <pim-bugs-null>
Status:	RESOLVED FIXED
Severity:	crash	CC:	montel, winter
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Mint (Ubuntu based)
OS:	Linux
Latest Commit:	http://commits.kde.org/kdepimlibs/bab49f4c6898faeeb55f63d43b9dae47046ff921	Version Fixed/Implemented In:	4.14.7
Sentry Crash Report:

Description Noel 2015-03-02 19:31:46 UTC

Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-24-generic i686
Distribution: Linux Mint 17.1 Rebecca

-- Information about the crash:
- What I was doing when the application crashed: I have started my System running in an Virtual Box and logged into my account

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1335980 (LWP 2078))]

Thread 6 (Thread 0xa404db40 (LWP 2079)):
#0  0xb76e0424 in __kernel_vsyscall ()
#1  0xb2174d4b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7599dcc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb30a9c92 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb30a9cdf in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2170f70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb758cbee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 5 (Thread 0xa2346b40 (LWP 2080)):
#0  0xb76e0424 in __kernel_vsyscall ()
#1  0xb759a872 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f1c8cc in do_gettime (frac=0xa2345ff0, sec=0xa2345fe8) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0xb60052a2 in updateCurrentTime (this=0xa1a028e4) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0xa1a028e4, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0xb600382b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa23460ec) at kernel/qeventdispatcher_glib.cpp:143
#7  0xb60038bd in timerSourcePrepare (source=0xa1a028b0, timeout=0xa23460ec) at kernel/qeventdispatcher_glib.cpp:176
#8  0xb20539b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb20542df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb2054528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb600395f in QEventDispatcherGlib::processEvents (this=0xa1a00468, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#12 0xb5fd2823 in QEventLoop::processEvents (this=this@entry=0xa2346258, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5fd2b49 in QEventLoop::exec (this=this@entry=0xa2346258, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5ebf23d in QThread::exec (this=this@entry=0xa5adea8) at thread/qthread.cpp:537
#15 0xb5fb2c44 in QInotifyFileSystemWatcherEngine::run (this=0xa5adea8) at io/qfilesystemwatcher_inotify.cpp:265
#16 0xb5ec1b6f in QThreadPrivate::start (arg=0xa5adea8) at thread/qthread_unix.cpp:349
#17 0xb2170f70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb758cbee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xa0dffb40 (LWP 2082)):
#0  0xb76e0424 in __kernel_vsyscall ()
#1  0xb757dc8b in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb206320b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb20543e8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb205476b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa182b36a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb207a9aa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2170f70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb758cbee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xa03ffb40 (LWP 2083)):
#0  0xb76e0424 in __kernel_vsyscall ()
#1  0xb759a872 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f1c8cc in do_gettime (frac=0xa03feff0, sec=0xa03fefe8) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0xb60052a2 in updateCurrentTime (this=0x9fa028e4) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x9fa028e4, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0xb600382b in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa03ff0ec) at kernel/qeventdispatcher_glib.cpp:143
#7  0xb60038bd in timerSourcePrepare (source=0x9fa028b0, timeout=0xa03ff0ec) at kernel/qeventdispatcher_glib.cpp:176
#8  0xb20539b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb20542df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb2054528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb600395f in QEventDispatcherGlib::processEvents (this=0x9fa00468, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#12 0xb5fd2823 in QEventLoop::processEvents (this=this@entry=0xa03ff258, flags=...) at kernel/qeventloop.cpp:149
#13 0xb5fd2b49 in QEventLoop::exec (this=this@entry=0xa03ff258, flags=...) at kernel/qeventloop.cpp:204
#14 0xb5ebf23d in QThread::exec (this=this@entry=0xa625030) at thread/qthread.cpp:537
#15 0xb5fb2c44 in QInotifyFileSystemWatcherEngine::run (this=0xa625030) at io/qfilesystemwatcher_inotify.cpp:265
#16 0xb5ec1b6f in QThreadPrivate::start (arg=0xa625030) at thread/qthread_unix.cpp:349
#17 0xb2170f70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb758cbee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0x9deb0b40 (LWP 2090)):
#0  0xb76e0424 in __kernel_vsyscall ()
#1  0xb759a872 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5f1c8cc in do_gettime (frac=0x9deb0020, sec=0x9deb0018) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0xb60052a2 in updateCurrentTime (this=0x9d5026e4) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x9d5026e4, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0xb600382b in timerSourcePrepareHelper (src=<optimized out>, timeout=0x9deb00fc) at kernel/qeventdispatcher_glib.cpp:143
#7  0xb20539b3 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb20542df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2054528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb600395f in QEventDispatcherGlib::processEvents (this=0x9d500468, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#11 0xb5fd2823 in QEventLoop::processEvents (this=this@entry=0x9deb0268, flags=...) at kernel/qeventloop.cpp:149
#12 0xb5fd2b49 in QEventLoop::exec (this=this@entry=0x9deb0268, flags=...) at kernel/qeventloop.cpp:204
#13 0xb5ebf23d in QThread::exec (this=0xa73c758) at thread/qthread.cpp:537
#14 0x9eca28c7 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#15 0xb5ec1b6f in QThreadPrivate::start (arg=0xa73c758) at thread/qthread_unix.cpp:349
#16 0xb2170f70 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0xb758cbee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1335980 (LWP 2078)):
[KCrash Handler]
#7  0xa26e66e5 in parent (this=0x0) at /usr/include/qt4/QtCore/qobject.h:273
#8  Akonadi::NotificationSource::setAllMonitored (this=0x0, allMonitored=false) at ../../akonadi/notificationsource.cpp:40
#9  0xa26dccc3 in Akonadi::MonitorPrivate::serverStateChanged (this=0xa56bf60, state=Akonadi::ServerManager::Running) at ../../akonadi/monitor_p.cpp:102
#10 0xa26d81c4 in Akonadi::Monitor::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0xbfa8f078, _c=<optimized out>) at ./moc_monitor.cpp:179
#11 0xb5fe90f7 in QMetaObject::activate (sender=sender@entry=0xa95ece8, m=m@entry=0xa283ead8 <Akonadi::ServerManager::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0xbfa8f078) at kernel/qobject.cpp:3539
#12 0xa272c735 in Akonadi::ServerManager::stateChanged (this=0xa95ece8, _t1=_t1@entry=Akonadi::ServerManager::Running) at ./moc_servermanager.cpp:125
#13 0xa272d447 in setState (state=Akonadi::ServerManager::Running, this=0xa270bc8) at ../../akonadi/servermanager.cpp:96
#14 checkStatusChanged (this=0xa270bc8) at ../../akonadi/servermanager.cpp:88
#15 Akonadi::ServerManager::qt_static_metacall (_o=0xa95ece8, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xb04a310) at ./moc_servermanager.cpp:63
#16 0xb5fe58aa in QMetaCallEvent::placeMetaCall (this=0xb153b88, object=0xa95ece8) at kernel/qobject.cpp:524
#17 0xb5fed6fb in QObject::event (this=0xa95ece8, e=0xb153b88) at kernel/qobject.cpp:1194
#18 0xb54df7f4 in QApplicationPrivate::notify_helper (this=0x9f916e0, receiver=0xa95ece8, e=0xb153b88) at kernel/qapplication.cpp:4567
#19 0xb54e62d3 in QApplication::notify (this=0x9f82bb8, receiver=receiver@entry=0xa95ece8, e=e@entry=0xb153b88) at kernel/qapplication.cpp:4353
#20 0xb66481b4 in KApplication::notify (this=0x9f82bb8, receiver=0xa95ece8, event=0xb153b88) at ../../kdeui/kernel/kapplication.cpp:311
#21 0xb5fd3e4a in QCoreApplication::notifyInternal (this=0x9f82bb8, receiver=receiver@entry=0xa95ece8, event=event@entry=0xb153b88) at kernel/qcoreapplication.cpp:953
#22 0xb5fd770d in sendEvent (event=0xb153b88, receiver=0xa95ece8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x9f36fc8) at kernel/qcoreapplication.cpp:1577
#24 0xb5fd7c1c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#25 0xb600423e in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#26 postEventSourceDispatch (s=0x9f91ab8) at kernel/qeventdispatcher_glib.cpp:287
#27 0xb20541e3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb2054468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb2054528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0xb600393b in QEventDispatcherGlib::processEvents (this=this@entry=0x9f37d50, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#31 0xb55945de in QGuiEventDispatcherGlib::processEvents (this=0x9f37d50, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#32 0xb5fd2823 in QEventLoop::processEvents (this=this@entry=0xbfa8f698, flags=...) at kernel/qeventloop.cpp:149
#33 0xb5fd2b49 in QEventLoop::exec (this=this@entry=0xbfa8f698, flags=...) at kernel/qeventloop.cpp:204
#34 0xb5fd88fe in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#35 0xb54dda24 in QApplication::exec () at kernel/qapplication.cpp:3828
#36 0xb769cd27 in kdemain (argc=1, argv=0xbfa8f834) at ../../../../plasma/desktop/shell/main.cpp:126
#37 0x0804855b in main (argc=1, argv=0xbfa8f834) at plasma-desktop_dummy.cpp:3

Reported using DrKonqi

Comment 1 Allen Winter 2015-03-02 23:03:45 UTC

probable fix:

In MonitorPrivate::serverStateChanged() check the return status of connectToNotificationManager() which is a bool and can fail; in which case notificationSource is 0.

Comment 2 Allen Winter 2015-03-07 20:22:53 UTC

Git commit bab49f4c6898faeeb55f63d43b9dae47046ff921 by Allen Winter.
Committed on 07/03/2015 at 20:19.
Pushed by winterz into branch 'KDE/4.14'.

akonadi/monitor_p.cpp - prevent a crash in serverStateChanged()

Skip setting the monitors when unable to connect to the
notification manager.

M  +24   -22   akonadi/monitor_p.cpp

http://commits.kde.org/kdepimlibs/bab49f4c6898faeeb55f63d43b9dae47046ff921