Bug 334796

Application: kded4 (4.13.0)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.9-ck1-kubuntu-ck-amdf10-rjvb x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I resumed a 1 day, 14h old session from suspend-to-ram by opening the netbook's lid (suspension had been achieved by closing the lid)

- Unusual behaviour I noticed:
When the screen came on, I could see my old session, not the lockscreen as should have been the case.

Additional info: the system was on mains power before being suspended yesterday evening up till and after the resume. It had been on battery power for a few hours during the day, and at the time I'd noticed unusual behaviour of the panel (which has the battery icon displayed unconditionally): it kept popping to and fro the front (the panel is set so that windows can go over it).

-- Backtrace:
Application: KDE Dæmon (kded4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc2eded47c0 (LWP 20457))]

Thread 6 (Thread 0x7fc2d189b700 (LWP 20459)):
#0  0x00007fc2ecb7eb2a in testAndSetOrdered (newValue=1, expectedValue=0, this=0x12eb330) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:145
#1  testAndSetAcquire (newValue=1, expectedValue=0, this=0x12eb330) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:267
#2  tryLockInline (this=0x14f8398) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:181
#3  lockInline (this=0x14f8398) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:189
#4  QMutexLocker (m=0x14f8398, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:109
#5  canWaitLocked (this=0x14f8350) at ../../include/QtCore/private/../../../src/corelib/thread/qthread_p.h:228
#6  postEventSourcePrepare (s=0x7fc2cc001350, timeout=0x7fc2d189ac64) at kernel/qeventdispatcher_glib.cpp:270
#7  0x00007fc2e884268d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fc2e8842f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fc2e88430ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fc2ecb7e7be in QEventDispatcherGlib::processEvents (this=0x7fc2cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#11 0x00007fc2ecb500af in QEventLoop::processEvents (this=this@entry=0x7fc2d189ae20, flags=...) at kernel/qeventloop.cpp:149
#12 0x00007fc2ecb503a5 in QEventLoop::exec (this=this@entry=0x7fc2d189ae20, flags=...) at kernel/qeventloop.cpp:204
#13 0x00007fc2eca4cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#14 0x00007fc2eca4f32f in QThreadPrivate::start (arg=0x165eb20) at thread/qthread_unix.cpp:349
#15 0x00007fc2e8f25182 in start_thread (arg=0x7fc2d189b700) at pthread_create.c:312
#16 0x00007fc2eb75230d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fc2b2f86700 (LWP 20471)):
#0  0x00007fc2eb7436bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fc2e8883c20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc2e8842b14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2e8842f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc2e884330a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc2c4aa5e16 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fc2e8867f15 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fc2e8f25182 in start_thread (arg=0x7fc2b2f86700) at pthread_create.c:312
#8  0x00007fc2eb75230d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fc2b2785700 (LWP 20472)):
#0  0x00007fc2e88849b0 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc2e8842680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc2e8842f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2e88430ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc2ecb7e7be in QEventDispatcherGlib::processEvents (this=0x7fc2a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007fc2ecb500af in QEventLoop::processEvents (this=this@entry=0x7fc2b2784de0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fc2ecb503a5 in QEventLoop::exec (this=this@entry=0x7fc2b2784de0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fc2eca4cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#8  0x00007fc2cace5027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#9  0x00007fc2eca4f32f in QThreadPrivate::start (arg=0x1675630) at thread/qthread_unix.cpp:349
#10 0x00007fc2e8f25182 in start_thread (arg=0x7fc2b2785700) at pthread_create.c:312
#11 0x00007fc2eb75230d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fc2b1f84700 (LWP 20473)):
#0  0x00007fc2e8842620 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc2e8842f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc2e88430ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2ecb7e7be in QEventDispatcherGlib::processEvents (this=0x7fc2a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fc2ecb500af in QEventLoop::processEvents (this=this@entry=0x7fc2b1f83e20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc2ecb503a5 in QEventLoop::exec (this=this@entry=0x7fc2b1f83e20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fc2eca4cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#7  0x00007fc2eca4f32f in QThreadPrivate::start (arg=0x166b220) at thread/qthread_unix.cpp:349
#8  0x00007fc2e8f25182 in start_thread (arg=0x7fc2b1f84700) at pthread_create.c:312
#9  0x00007fc2eb75230d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fc2b1783700 (LWP 20474)):
#0  0x00007fc2e8842b08 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc2e8842f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc2e88430ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2ecb7e7be in QEventDispatcherGlib::processEvents (this=0x7fc29c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fc2ecb500af in QEventLoop::processEvents (this=this@entry=0x7fc2b1782de0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc2ecb503a5 in QEventLoop::exec (this=this@entry=0x7fc2b1782de0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fc2eca4cc5f in QThread::exec (this=this@entry=0x1693610) at thread/qthread.cpp:537
#7  0x00007fc2ecb31823 in QInotifyFileSystemWatcherEngine::run (this=0x1693610) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fc2eca4f32f in QThreadPrivate::start (arg=0x1693610) at thread/qthread_unix.cpp:349
#9  0x00007fc2e8f25182 in start_thread (arg=0x7fc2b1783700) at pthread_create.c:312
#10 0x00007fc2eb75230d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fc2eded47c0 (LWP 20457)):
[KCrash Handler]
#6  0x00007fc2e33c0647 in Solid::Backends::UPower::Battery::slotChanged (this=0x191c860) at ../../../solid/solid/backends/upower/upowerbattery.cpp:149
#7  0x00007fc2ecb6587a in QMetaObject::activate (sender=0x12e2f80, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#8  0x00007fc2ecb6587a in QMetaObject::activate (sender=sender@entry=0x12e2f90, m=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff70b0f4b0) at kernel/qobject.cpp:3539
#9  0x00007fc2e9ee5a82 in QDBusInterfacePrivate::metacall (this=0x171ee40, c=<optimized out>, id=0, argv=0x7fff70b0f4b0) at qdbusinterface.cpp:278
#10 0x00007fc2e9ed31f6 in QDBusConnectionPrivate::deliverCall (this=0x14f8480, object=0x12e2f90, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:951
#11 0x00007fc2ecb69c1e in QObject::event (this=0x12e2f90, e=<optimized out>) at kernel/qobject.cpp:1194
#12 0x00007fc2ebeeae2c in QApplicationPrivate::notify_helper (this=this@entry=0x12e5c90, receiver=receiver@entry=0x12e2f90, e=e@entry=0x3126c30) at kernel/qapplication.cpp:4567
#13 0x00007fc2ebef14a0 in QApplication::notify (this=this@entry=0x7fff70b0fc80, receiver=receiver@entry=0x12e2f90, e=e@entry=0x3126c30) at kernel/qapplication.cpp:4353
#14 0x00007fc2ed8d0baa in KApplication::notify (this=0x7fff70b0fc80, receiver=0x12e2f90, event=0x3126c30) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007fc2ecb514dd in QCoreApplication::notifyInternal (this=0x7fff70b0fc80, receiver=receiver@entry=0x12e2f90, event=event@entry=0x3126c30) at kernel/qcoreapplication.cpp:953
#16 0x00007fc2ecb54b3d in sendEvent (event=0x3126c30, receiver=0x12e2f90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1230150) at kernel/qcoreapplication.cpp:1577
#18 0x00007fc2ecb54fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#19 0x00007fc2ecb7ef83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#20 postEventSourceDispatch (s=0x12e4260) at kernel/qeventdispatcher_glib.cpp:287
#21 0x00007fc2e8842e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fc2e8843048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fc2e88430ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fc2ecb7e7a1 in QEventDispatcherGlib::processEvents (this=0x1232460, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#25 0x00007fc2ebf8cbb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007fc2ecb500af in QEventLoop::processEvents (this=this@entry=0x7fff70b0fb50, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007fc2ecb503a5 in QEventLoop::exec (this=this@entry=0x7fff70b0fb50, flags=...) at kernel/qeventloop.cpp:204
#28 0x00007fc2ecb55b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#29 0x00007fc2ebee937c in QApplication::exec () at kernel/qapplication.cpp:3828
#30 0x00007fc2d7309d1b in kdemain (argc=1, argv=0x12bbd00) at ../../kded/kded.cpp:940
#31 0x00000000004083ee in launch (argc=argc@entry=1, _name=_name@entry=0x40afc5 "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=0x40aead "0") at ../../kinit/kinit.cpp:738
#32 0x00000000004059a3 in main (argc=4, argv=<optimized out>, envp=0x7fff70b103e0) at ../../kinit/kinit.cpp:1853

The reporter indicates this bug may be a duplicate of or related to bug 288410.

Possible duplicates by query: bug 334638, bug 333679, bug 333490, bug 333202, bug 333052.

Reported using DrKonqi