Bug 280466

Application: kded4 ($Id$)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-10-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Using Chrome Browser
Using flash plugin on the browser.
Protocols active: HTTP, skype, msn, xmpp facebook

- Unusual behavior I noticed:
USB 3G device driver hung up. Modem disconnected - reboot and reconencted.
Modem model: ZTE Vodafone K3565-Z
Manufacturer: Linux 2.6.38-10-generic ehci_hcd
Bus 001 Device 007: ID 19d2:0063 ONDA Communication S.p.A. 
Bus 001 Device 005: ID 1a40:0101 TERMINUS TECHNOLOGY INC. USB-2.0 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

The crash can be reproduced some of the time.

-- Backtrace:
Application: KDE Daemon (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7847b60 (LWP 1650))]

Thread 3 (Thread 0xb3a6eb70 (LWP 1659)):
#0  0x07ca036b in __pthread_mutex_lock (mutex=0xb31004dc) at pthread_mutex_lock.c:61
#1  0x06f9b616 in pthread_mutex_lock (mutex=0xb31004dc) at forward.c:182
#2  0x05dde752 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x05ddf03a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x05ddf524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x0061f577 in QEventDispatcherGlib::processEvents (this=0x93e21a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x005f1289 in QEventLoop::processEvents (this=0xb3a6e290, flags=...) at kernel/qeventloop.cpp:149
#7  0x005f1522 in QEventLoop::exec (this=0xb3a6e290, flags=...) at kernel/qeventloop.cpp:201
#8  0x004fb2a0 in QThread::exec (this=0x93f4638) at thread/qthread.cpp:492
#9  0x005d2fdb in QInotifyFileSystemWatcherEngine::run (this=0x93f4638) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x004fdda2 in QThreadPrivate::start (arg=0x93f4638) at thread/qthread_unix.cpp:320
#11 0x07c9de99 in start_thread (arg=0xb3a6eb70) at pthread_create.c:304
#12 0x06f8d73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb30ffb70 (LWP 1725)):
#0  0x05dde3d9 in g_main_context_query () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x05ddee8c in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x05ddf92b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x031f3304 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#4  0x05e082df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x07c9de99 in start_thread (arg=0xb30ffb70) at pthread_create.c:304
#6  0x06f8d73e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7847b60 (LWP 1650)):
[KCrash Handler]
#7  QCoreApplication::postEvent (receiver=0x9517104, event=0x9505908, priority=0) at kernel/qcoreapplication.cpp:1132
#8  0x005f54cc in QCoreApplication::postEvent (receiver=0x9517104, event=0x9505908) at kernel/qcoreapplication.cpp:1093
#9  0x018a2092 in postEventToThread (this=0x93a2160, hook=..., msg=...) at qdbusintegrator.cpp:2387
#10 QDBusConnectionPrivate::activateSignal (this=0x93a2160, hook=..., msg=...) at qdbusintegrator.cpp:766
#11 0x018a2419 in QDBusConnectionPrivate::handleSignal (this=0x93a2160, key=..., msg=...) at qdbusintegrator.cpp:1573
#12 0x018a2661 in QDBusConnectionPrivate::handleSignal (this=0x93a2160, msg=...) at qdbusintegrator.cpp:1592
#13 0x018a405f in QDBusConnectionPrivate::handleMessage (this=0x93a2160, amsg=...) at qdbusintegrator.cpp:560
#14 0x018a833e in qDBusSignalFilter (connection=0x93a2ad8, message=0x93ec898, data=0x93a2160) at qdbusintegrator.cpp:541
#15 0x0310d3ab in dbus_connection_dispatch () from /lib/i386-linux-gnu/libdbus-1.so.3
#16 0x0189a92b in q_dbus_connection_dispatch (this=0x93a2160) at qdbus_symbols_p.h:115
#17 QDBusConnectionPrivate::doDispatch (this=0x93a2160) at qdbusintegrator.cpp:1125
#18 0x0189cf25 in QDBusConnectionPrivate::socketRead (this=0x93a2160, fd=11) at qdbusintegrator.cpp:1145
#19 0x018e00bf in QDBusConnectionPrivate::qt_metacall (this=0x93a2160, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9dc348) at .moc/release-shared/moc_qdbusconnection_p.cpp:99
#20 0x005f86ba in QMetaObject::metacall (object=0x93a2160, cl=QMetaObject::InvokeMetaMethod, idx=8, argv=0xbf9dc348) at kernel/qmetaobject.cpp:237
#21 0x006084ff in QMetaObject::activate (sender=0x93a1f48, m=0x72d550, local_signal_index=0, argv=0xbf9dc348) at kernel/qobject.cpp:3287
#22 0x00655183 in QSocketNotifier::activated (this=0x93a1f48, _t1=11) at .moc/release-shared/moc_qsocketnotifier.cpp:89
#23 0x0060dfb7 in QSocketNotifier::event (this=0x93a1f48, e=0xbf9dc7c4) at kernel/qsocketnotifier.cpp:317
#24 0x00f18d24 in QApplicationPrivate::notify_helper (this=0x92dd258, receiver=0x93a1f48, e=0xbf9dc7c4) at kernel/qapplication.cpp:4462
#25 0x00f1d8ce in QApplication::notify (this=0xbf9dcad0, receiver=0x93a1f48, e=0xbf9dc7c4) at kernel/qapplication.cpp:3862
#26 0x00c223ca in KApplication::notify (this=0xbf9dcad0, receiver=0x93a1f48, event=0xbf9dc7c4) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x005f20bb in QCoreApplication::notifyInternal (this=0xbf9dcad0, receiver=0x93a1f48, event=0xbf9dc7c4) at kernel/qcoreapplication.cpp:731
#28 0x0061eec7 in sendEvent (source=0x92f3e58) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#29 socketNotifierSourceDispatch (source=0x92f3e58) at kernel/qeventdispatcher_glib.cpp:110
#30 0x05ddeaa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#31 0x05ddf270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#32 0x05ddf524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#33 0x0061f53c in QEventDispatcherGlib::processEvents (this=0x92d05b0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#34 0x00fcf1e5 in QGuiEventDispatcherGlib::processEvents (this=0x92d05b0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x005f1289 in QEventLoop::processEvents (this=0xbf9dca34, flags=...) at kernel/qeventloop.cpp:149
#36 0x005f1522 in QEventLoop::exec (this=0xbf9dca34, flags=...) at kernel/qeventloop.cpp:201
#37 0x005f5ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#38 0x00f168e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#39 0x028c4b50 in kdemain (argc=1, argv=0x92b39b0) at ../../kded/kded.cpp:925
#40 0x0804dc5f in launch (argc=1, _name=0x8052207 "kded4", args=<value optimized out>, cwd=0x0, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x805208e "0") at ../../kinit/kinit.cpp:746
#41 0x0805085c in main (argc=419430400, argv=0xb4000000, envp=0x72e4) at ../../kinit/kinit.cpp:1861

Possible duplicates by query: bug 276062, bug 274217, bug 269396.

Reported using DrKonqi