Application: kded4 ($Id$) KDE Platform Version: 4.9.97 (Compiled from sources) Qt Version: 4.8.3 Operating System: Linux 3.5.0-21-generic x86_64 Distribution: Ubuntu 12.10 -- Information about the crash: - What I was doing when the application crashed: I've execute a script with content: qdbus org.kde.kded /kded org.kde.kded.unloadModule randrmonitor qdbus org.kde.kded /kded org.kde.kded.setModuleAutoloading randrmonitor false qdbus org.kde.kded /kded org.kde.kded.loadModule kscreen at this time no external monitor was connected. -- Backtrace: Application: KDE Dæmon (kdeinit4), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f6f8fa51780 (LWP 2449))] Thread 5 (Thread 0x7f6f75bd2700 (LWP 2519)): #0 0x00007f6f92423fc0 in __pthread_mutex_lock (mutex=0x7f6f68000a60) at pthread_mutex_lock.c:113 #1 0x00007f6f91b85e21 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f6f91b48623 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f6f91b48cab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f6f91b48ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f6f96078c16 in QEventDispatcherGlib::processEvents (this=0x7f6f680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #6 0x00007f6f960492bf in QEventLoop::processEvents (this=this@entry=0x7f6f75bd1dd0, flags=...) at kernel/qeventloop.cpp:149 #7 0x00007f6f96049548 in QEventLoop::exec (this=0x7f6f75bd1dd0, flags=...) at kernel/qeventloop.cpp:204 #8 0x00007f6f95f4ab10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501 #9 0x00007f6f960299af in QInotifyFileSystemWatcherEngine::run (this=0x1e25be0) at io/qfilesystemwatcher_inotify.cpp:248 #10 0x00007f6f95f4daec in QThreadPrivate::start (arg=0x1e25be0) at thread/qthread_unix.cpp:338 #11 0x00007f6f92421e9a in start_thread (arg=0x7f6f75bd2700) at pthread_create.c:308 #12 0x00007f6f94c57cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #13 0x0000000000000000 in ?? () Thread 4 (Thread 0x7f6f74b13700 (LWP 2645)): #0 0x00007f6f960786f7 in timerSourceCheck (source=0x7f6f6c002800) at kernel/qeventdispatcher_glib.cpp:175 #1 0x00007f6f91b4888c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f6f91b48d22 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f6f91b48ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f6f96078c16 in QEventDispatcherGlib::processEvents (this=0x7f6f6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #5 0x00007f6f960492bf in QEventLoop::processEvents (this=this@entry=0x7f6f74b12dd0, flags=...) at kernel/qeventloop.cpp:149 #6 0x00007f6f96049548 in QEventLoop::exec (this=0x7f6f74b12dd0, flags=...) at kernel/qeventloop.cpp:204 #7 0x00007f6f95f4ab10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501 #8 0x00007f6f960299af in QInotifyFileSystemWatcherEngine::run (this=0x21d7d60) at io/qfilesystemwatcher_inotify.cpp:248 #9 0x00007f6f95f4daec in QThreadPrivate::start (arg=0x21d7d60) at thread/qthread_unix.cpp:338 #10 0x00007f6f92421e9a in start_thread (arg=0x7f6f74b13700) at pthread_create.c:308 #11 0x00007f6f94c57cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #12 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f6f62f86700 (LWP 2646)): #0 0x00007f6f94c4c303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007f6f91b48d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f6f91b48ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f6f96078c16 in QEventDispatcherGlib::processEvents (this=0x7f6f540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #4 0x00007f6f960492bf in QEventLoop::processEvents (this=this@entry=0x7f6f62f85e00, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007f6f96049548 in QEventLoop::exec (this=0x7f6f62f85e00, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007f6f95f4ab10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501 #7 0x00007f6f95f4daec in QThreadPrivate::start (arg=0x225f220) at thread/qthread_unix.cpp:338 #8 0x00007f6f92421e9a in start_thread (arg=0x7f6f62f86700) at pthread_create.c:308 #9 0x00007f6f94c57cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 2 (Thread 0x7f6f62785700 (LWP 2647)): #0 0x00007f6f94c4c303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007f6f91b48d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f6f91b48ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f6f96078c16 in QEventDispatcherGlib::processEvents (this=0x7f6f5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #4 0x00007f6f960492bf in QEventLoop::processEvents (this=this@entry=0x7f6f62784e00, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007f6f96049548 in QEventLoop::exec (this=0x7f6f62784e00, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007f6f95f4ab10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501 #7 0x00007f6f95f4daec in QThreadPrivate::start (arg=0x1e5c2f0) at thread/qthread_unix.cpp:338 #8 0x00007f6f92421e9a in start_thread (arg=0x7f6f62785700) at pthread_create.c:308 #9 0x00007f6f94c57cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f6f8fa51780 (LWP 2449)): [KCrash Handler] #6 QHash (other=..., this=0x7fff1eb33740) at /usr/include/qt4/QtCore/qhash.h:282 #7 KScreen::Config::outputs (this=0x0) at /home/allee/Sources/kscreen-ng/libkscreen-0.0+git2013010701/src/config.cpp:79 #8 0x00007f6f4f984e1e in KScreenDaemon::monitorConnectedChange (this=this@entry=0x24eb070) at /home/allee/Sources/kscreen-ng/kscreen-0.0+git2013010701/kded/daemon.cpp:152 #9 0x00007f6f4f985180 in KScreenDaemon::KScreenDaemon (this=0x24eb070, parent=<optimized out>) at /home/allee/Sources/kscreen-ng/kscreen-0.0+git2013010701/kded/daemon.cpp:60 #10 0x00007f6f4f985937 in KPluginFactory::createInstance<KScreenDaemon, QObject> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/KDE/../kpluginfactory.h:477 #11 0x00007f6f965a57c5 in KPluginFactory::create (this=0x236d300, iface=0x7f6f965fc1c0 <qt_meta_stringdata_KDEDModule> "KDEDModule", parentWidget=0x0, parent=0x1c2f960, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:203 #12 0x00007f6f82a07cd7 in create<KDEDModule> (args=..., parent=0x1c2f960, this=<optimized out>) at ../../kdecore/util/kpluginfactory.h:507 #13 Kded::loadModule (this=this@entry=0x1c2f960, s=..., onDemand=onDemand@entry=false) at ../../kded/kded.cpp:409 #14 0x00007f6f82a085bb in Kded::loadModule (this=0x1c2f960, obj=..., onDemand=<optimized out>) at ../../kded/kded.cpp:361 #15 0x00007f6f82a0b585 in KdedAdaptor::loadModule (this=<optimized out>, module=...) at ../../kded/kdedadaptor.cpp:44 #16 0x00007f6f82a0b88e in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./kdedadaptor.moc:70 #17 KdedAdaptor::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./kdedadaptor.moc:64 #18 0x00007f6f82a0b99b in KdedAdaptor::qt_metacall (this=0x1c36d40, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff1eb33ca0) at ./kdedadaptor.moc:124 #19 0x00007f6f933c1ed3 in QDBusConnectionPrivate::deliverCall (this=this@entry=0x1c2bc60, object=object@entry=0x1c36d40, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:947 #20 0x00007f6f933c2fd5 in QDBusConnectionPrivate::activateCall (this=this@entry=0x1c2bc60, object=0x1c36d40, flags=flags@entry=273, msg=...) at qdbusintegrator.cpp:857 #21 0x00007f6f933c394f in QDBusConnectionPrivate::activateObject (this=0x1c2bc60, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1423 #22 0x00007f6f933c3a2b in QDBusActivateObjectEvent::placeMetaCall (this=0x249d080) at qdbusintegrator.cpp:1537 #23 0x00007f6f9605f43e in QObject::event (this=0x1c2f960, e=<optimized out>) at kernel/qobject.cpp:1195 #24 0x00007f6f953f1e9c in QApplicationPrivate::notify_helper (this=this@entry=0x1c37bc0, receiver=receiver@entry=0x1c2f960, e=e@entry=0x249d080) at kernel/qapplication.cpp:4562 #25 0x00007f6f953f630a in QApplication::notify (this=0x7fff1eb34a80, receiver=0x1c2f960, e=0x249d080) at kernel/qapplication.cpp:4423 #26 0x00007f6f96dc3626 in KApplication::notify (this=0x7fff1eb34a80, receiver=0x1c2f960, event=0x249d080) at ../../kdeui/kernel/kapplication.cpp:311 #27 0x00007f6f9604a56e in QCoreApplication::notifyInternal (this=0x7fff1eb34a80, receiver=receiver@entry=0x1c2f960, event=event@entry=0x249d080) at kernel/qcoreapplication.cpp:915 #28 0x00007f6f9604e3f1 in sendEvent (event=0x249d080, receiver=0x1c2f960) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #29 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1ba32b0) at kernel/qcoreapplication.cpp:1539 #30 0x00007f6f96078a63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236 #31 postEventSourceDispatch (s=0x1c38f00) at kernel/qeventdispatcher_glib.cpp:279 #32 0x00007f6f91b48ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007f6f91b48de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007f6f91b48ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #35 0x00007f6f96078bf6 in QEventDispatcherGlib::processEvents (this=0x1ba57d0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #36 0x00007f6f95496c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #37 0x00007f6f960492bf in QEventLoop::processEvents (this=this@entry=0x7fff1eb34800, flags=...) at kernel/qeventloop.cpp:149 #38 0x00007f6f96049548 in QEventLoop::exec (this=0x7fff1eb34800, flags=...) at kernel/qeventloop.cpp:204 #39 0x00007f6f9604e708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187 #40 0x00007f6f82a073f0 in kdemain (argc=1, argv=0x1c19a40) at ../../kded/kded.cpp:924 #41 0x00000000004084c6 in launch (argc=argc@entry=1, _name=_name@entry=0x40b127 "kded4", args=args@entry=0x0, cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x0, reset_env=reset_env@entry=false, tty=tty@entry=0x0, avoid_loops=avoid_loops@entry=false, startup_id_str=startup_id_str@entry=0x40afb6 "0") at ../../kinit/kinit.cpp:738 #42 0x0000000000405a29 in main (argc=4, argv=<optimized out>, envp=0x7fff1eb35480) at ../../kinit/kinit.cpp:1853 Reported using DrKonqi
Created attachment 76286 [details] xrandr log
Created attachment 76287 [details] kscreen console log
@#$^^. My fault. My pkgs missed to install the KSC_* plugins of libkscreen. Now kcm plugin starts and kded4 no longer crashes. It's maybe a good idea to check if the plugin could be loaded/is loaded sucessfully, but on a properly installed system, the crash would not happen. Sorry, for the false alarm. Achim
Reopening. Crashing when no module is install/fails to load is a bug. We should handle it and exit gracefully with an error message.
Git commit c0935935046cd9fe8b10acb88bbddbf70767c8c7 by Dan Vrátil. Committed on 07/01/2013 at 22:21. Pushed by dvratil into branch 'master'. Be more careful about null pointers Check for null pointers before dereferencing (mostly in KDED). M +4 -0 kcm/src/displayconfiguration.cpp M +7 -0 kded/daemon.cpp M +17 -0 kded/generator.cpp M +14 -1 kded/serializer.cpp http://commits.kde.org/kscreen/c0935935046cd9fe8b10acb88bbddbf70767c8c7