Bug 301549

Summary: plasma-widget-menubar crashed when returning computer from standby [@ Registrar::slotLayoutUpdated]
Product: [Unmaintained] plasma4 Reporter: Dennis Schridde <heri+kde>
Component: widget-miscAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: crash CC: a.j.ball, agateau, boski_cinek, cfeck, heri+kde, housam1983, inop2603, j.solanki17, kaabud-kde, kirelagin
Priority: NOR    
Version First Reported In: 4.9.0   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi

Description Dennis Schridde 2012-06-10 03:44:01 UTC 
Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic-pae i686
Distribution: Ubuntu 12.04 LTS

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

I returned the computer from standby and plasma-widget-menubar crashed. This happened several time until now - each time after comming back from standby, never during the session.

The crash can be reproduced some of the time.

-- 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 0xb1ac0740 (LWP 1611))]

Thread 5 (Thread 0xa9f4bb40 (LWP 1613)):
#0  QTimerInfoList::updateCurrentTime (this=0xa9602074) at kernel/qeventdispatcher_unix.cpp:342
#1  0xb645e57a in QTimerInfoList::timerWait (this=0xa9602074, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#2  0xb645ce23 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa9f4b0bc) at kernel/qeventdispatcher_glib.cpp:136
#3  0xb645cebd in timerSourcePrepare (source=0xa9602040, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#4  0xb2bb7762 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2bb7f6f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb2bb81c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb645d8e7 in QEventDispatcherGlib::processEvents (this=0xa9600468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#8  0xb642950d in QEventLoop::processEvents (this=0xa9f4b240, flags=...) at kernel/qeventloop.cpp:149
#9  0xb64297a9 in QEventLoop::exec (this=0xa9f4b240, flags=...) at kernel/qeventloop.cpp:204
#10 0xb631294c in QThread::exec (this=0x9ddf958) at thread/qthread.cpp:501
#11 0xb6406b5d in QInotifyFileSystemWatcherEngine::run (this=0x9ddf958) at io/qfilesystemwatcher_inotify.cpp:248
#12 0xb6315de0 in QThreadPrivate::start (arg=0x9ddf958) at thread/qthread_unix.cpp:298
#13 0xb2cc8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#14 0xb7639ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xa89ebb40 (LWP 1617)):
#0  0xb2bf70a7 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2bf73c8 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2bb7a66 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2bb8002 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2bb81c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb645d8e7 in QEventDispatcherGlib::processEvents (this=0xa8000468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb642950d in QEventLoop::processEvents (this=0xa89eb240, flags=...) at kernel/qeventloop.cpp:149
#7  0xb64297a9 in QEventLoop::exec (this=0xa89eb240, flags=...) at kernel/qeventloop.cpp:204
#8  0xb631294c in QThread::exec (this=0xa1f0d48) at thread/qthread.cpp:501
#9  0xb6406b5d in QInotifyFileSystemWatcherEngine::run (this=0xa1f0d48) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb6315de0 in QThreadPrivate::start (arg=0xa1f0d48) at thread/qthread_unix.cpp:298
#11 0xb2cc8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb7639ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xa721bb40 (LWP 1623)):
#0  0xb778c424 in __kernel_vsyscall ()
#1  0xb2ccc96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76473dc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3c8b029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3c8b06f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2cc8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb7639ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xa5570b40 (LWP 1625)):
#0  0xb778c424 in __kernel_vsyscall ()
#1  0xb762b380 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2bc5a3b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2bb806e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2bb852b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa5e600ea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2bdb673 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2cc8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb7639ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1ac0740 (LWP 1611)):
[KCrash Handler]
#7  0xb644ede4 in QVariant::userType (this=0x2874) at kernel/qvariant.cpp:1784
#8  0xa954aeb0 in qvariant_cast<QDBusArgument> (v=...) at /usr/include/qt4/QtCore/qvariant.h:574
#9  value<QDBusArgument> (this=0x2874) at /usr/include/qt4/QtCore/qvariant.h:333
#10 Registrar::slotLayoutUpdated (this=0xa021628, parentId=0) at /build/buildd/plasma-widget-menubar-0.1.17/src/registrar.cpp:173
#11 0xa9540b32 in qt_static_metacall (_a=0xbf89ef1c, _id=7, _o=0xa021628, _c=<optimized out>) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:76
#12 Registrar::qt_static_metacall (_o=0xa021628, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf89ef1c) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:61
#13 0xa9540bec in Registrar::qt_metacall (this=0xa021628, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf89ef1c) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:117
#14 0xb65aaa38 in QDBusConnectionPrivate::deliverCall (this=0x9c0f030, object=0xa021628, msg=..., metaTypes=..., slotIdx=10356) at qdbusintegrator.cpp:947
#15 0xb65b4c8d in QDBusCallDeliveryEvent::placeMetaCall (this=0xb2ecc70, object=0xa021628) at qdbusintegrator_p.h:103
#16 0xb6445c7b in QObject::event (this=0xa021628, e=0xb2ecc70) at kernel/qobject.cpp:1195
#17 0xb5915ed4 in notify_helper (e=0xb2ecc70, receiver=0xa021628, this=0x9c173e0) at kernel/qapplication.cpp:4559
#18 QApplicationPrivate::notify_helper (this=0x9c173e0, receiver=0xa021628, e=0xb2ecc70) at kernel/qapplication.cpp:4531
#19 0xb591b30d in QApplication::notify (this=0xb2ecc70, receiver=0xa021628, e=0xb2ecc70) at kernel/qapplication.cpp:4288
#20 0xb6ac4b61 in KApplication::notify (this=0x9c041c0, receiver=0xa021628, event=0xb2ecc70) at ../../kdeui/kernel/kapplication.cpp:311
#21 0xb642a97e in QCoreApplication::notifyInternal (this=0x9c041c0, receiver=0xa021628, event=0xb2ecc70) at kernel/qcoreapplication.cpp:876
#22 0xb642ead8 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9ba9130) at kernel/qcoreapplication.cpp:1500
#24 0xb642ee0c in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#25 0xb645d494 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#26 postEventSourceDispatch (s=0x9c157e0) at kernel/qeventdispatcher_glib.cpp:279
#27 0xb2bb7cda in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb2bb80e5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb2bb81c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0xb645d887 in QEventDispatcherGlib::processEvents (this=0x9ba9ea0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#31 0xb59ceaaa in QGuiEventDispatcherGlib::processEvents (this=0x9ba9ea0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#32 0xb642950d in QEventLoop::processEvents (this=0xbf89f6c4, flags=...) at kernel/qeventloop.cpp:149
#33 0xb64297a9 in QEventLoop::exec (this=0xbf89f6c4, flags=...) at kernel/qeventloop.cpp:204
#34 0xb642eeba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#35 0xb5913a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#36 0xb7740a7b in kdemain (argc=1, argv=0xbf89f8c4) at ../../../../plasma/desktop/shell/main.cpp:120
#37 0x0804850b in main (argc=1, argv=0xbf89f8c4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 282308.

Reported using DrKonqi
Comment 1 Kirill Elagin 2012-06-13 08:38:54 UTC 
Created attachment 71785 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

The same here: the computer was suspended and when it resumed I saw Dr Konqi.

-- Backtrace (Reduced):
#6  0x0000003d3b7a2b00 in QVariant::userType() const () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007f35f8c12a23 in Registrar::slotLayoutUpdated(unsigned int, int) () from /usr/lib64/kde4/plasma_applet_menubar.so
#8  0x00007f35f8c0a4c1 in Registrar::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/kde4/plasma_applet_menubar.so
#9  0x00007f35f8c0a53b in Registrar::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/kde4/plasma_applet_menubar.so
#10 0x0000003d3c42497a in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QList<int> const&, int) () from /usr/lib64/qt4/libQtDBus.so.4
Comment 2 Kirill Elagin 2012-06-15 09:40:49 UTC 
Just wanted to add the crash is 100%-reproducible. Happens _every_ time I resume my laptop.
Don't know if this is relevant, but I'm using xmonad as a wm.
Comment 3 Myriam Schweingruber 2012-06-20 06:07:44 UTC 
Confirmed by second report.
Comment 4 Jekyll Wu 2012-07-18 19:48:35 UTC 
*** Bug 303745 has been marked as a duplicate of this bug. ***
Comment 5 jaydeep 2012-07-18 19:56:44 UTC 
happens to me too
Comment 6 Dennis Schridde 2012-07-19 12:08:14 UTC 
Created attachment 72625 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.4 (4.8.4) using Qt 4.8.1

- What I was doing when the application crashed:

The computer returned from standby (suspend to ram) and plasma crashed.

-- Backtrace (Reduced):
#7  0xb639dde4 in QVariant::userType (this=0x6c) at kernel/qvariant.cpp:1784
#8  0xa9491eb0 in qvariant_cast<QDBusArgument> (v=...) at /usr/include/qt4/QtCore/qvariant.h:574
#9  value<QDBusArgument> (this=0x6c) at /usr/include/qt4/QtCore/qvariant.h:333
#10 Registrar::slotLayoutUpdated (this=0x88c2bd0, parentId=0) at /build/buildd/plasma-widget-menubar-0.1.17/src/registrar.cpp:173
#11 0xa9487b32 in qt_static_metacall (_a=0xbfb8dfac, _id=7, _o=0x88c2bd0, _c=<optimized out>) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:76
Comment 7 Dennis Schridde 2012-08-09 14:24:19 UTC 
Created attachment 73061 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.4 (4.8.4) using Qt 4.8.1

- What I was doing when the application crashed:

The issue persists. Reproducible as before.

-- Backtrace (Reduced):
#7  0xb6413de4 in QVariant::userType (this=0x67) at kernel/qvariant.cpp:1784
#8  0xa9507eb0 in qvariant_cast<QDBusArgument> (v=...) at /usr/include/qt4/QtCore/qvariant.h:574
#9  value<QDBusArgument> (this=0x67) at /usr/include/qt4/QtCore/qvariant.h:333
#10 Registrar::slotLayoutUpdated (this=0x89e56b8, parentId=0) at /build/buildd/plasma-widget-menubar-0.1.17/src/registrar.cpp:173
#11 0xa94fdb32 in qt_static_metacall (_a=0xbf9c565c, _id=7, _o=0x89e56b8, _c=<optimized out>) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:76
Comment 8 Jekyll Wu 2012-08-31 14:28:10 UTC 
*** Bug 306083 has been marked as a duplicate of this bug. ***
Comment 9 Alex Ball 2012-09-20 10:04:48 UTC 
Created attachment 74049 [details]
New crash information added by DrKonqi

plasma-netbook (0.2) on KDE Platform 4.9.1 using Qt 4.8.2

- What I was doing when the application crashed:
With the update to KDE 4.9.1, this has started happening to me on every boot (rather than after resume).

-- Backtrace (Reduced):
#7  0x015e62b4 in QVariant::userType (this=0x26003e39) at kernel/qvariant.cpp:1784
#8  0x03821eb0 in qvariant_cast<QDBusArgument> (v=...) at /usr/include/qt4/QtCore/qvariant.h:574
#9  value<QDBusArgument> (this=0x26003e39) at /usr/include/qt4/QtCore/qvariant.h:333
#10 Registrar::slotLayoutUpdated (this=0x87d7690, parentId=0) at /build/buildd/plasma-widget-menubar-0.1.17/src/registrar.cpp:173
#11 0x03817b32 in qt_static_metacall (_a=0xbfbae80c, _id=7, _o=0x87d7690, _c=<optimized out>) at /build/buildd/plasma-widget-menubar-0.1.17/obj-i686-linux-gnu/src/moc_registrar.cpp:76
Comment 10 Jekyll Wu 2012-10-04 18:47:48 UTC 
*** Bug 307858 has been marked as a duplicate of this bug. ***
Comment 11 Christoph Feck 2012-10-05 02:58:37 UTC 
plasma-widget-menubar is a Kubuntu-specific add-on, which is no longer maintained, please remove it.

https://bugs.launchpad.net/plasma-widget-menubar/+bug/1052192
Comment 12 Jekyll Wu 2013-01-09 14:50:14 UTC 
*** Bug 312948 has been marked as a duplicate of this bug. ***