[kdelibs] [Bug 314922] New: PowerDevil crashes KDE Daemon in QVariant

[Christopher Yeleighton]

https://bugs.kde.org/show_bug.cgi?id=314922

            Bug ID: 314922
           Summary: PowerDevil crashes KDE Daemon in QVariant
    Classification: Unclassified
           Product: kdelibs
           Version: unspecified
          Platform: Compiled Sources
                OS: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: kded
          Assignee: unassigned-bugs at kde.org
          Reporter: giecrilj at stegny.2a.pl

Application: kded4 ($Id$)
KDE Platform Version: 4.9.00 (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.4.11-2.16-desktop x86_64
Distribution: "openSUSE 12.2 (x86_64)"

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

I was waiting for KDE desktop to load. 

- Unusual behavior I noticed:

I waited longer than usual for the desktop to show up.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KDE Daemon (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82    T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  Private (other=..., this=0x7fff73cc4600) at kernel/qvariant.h:356
#7  QVariant::QVariant (this=0x7fff73cc4600, p=...) at kernel/qvariant.cpp:1411
#8  0x00007f8f844b5ed5 in QDBusPendingReplyData::argumentAt
(this=0x7fff73cc4520, index=0) at qdbuspendingreply.cpp:270
#9  0x00007f8f6c491e41 in argumentAt<0> (this=0x7fff73cc4520) at
/usr/include/QtDBus/qdbuspendingreply.h:176
#10 operator QDBusPendingReplyTypes::Select<0, QList<QDBusObjectPath>, void,
void, void, void, void, void, void>::Type (this=0x7fff73cc4520) at
/usr/include/QtDBus/qdbuspendingreply.h:186
#11 PowerDevilUPowerBackend::enumerateDevices (this=this at entry=0x111df70) at
/tmp/kde-krzysztof/arkoFytSM/kde-workspace-4.9.0/powerdevil/daemon/backends/upower/powerdevilupowerbackend.cpp:254
#12 0x00007f8f6c492731 in PowerDevilUPowerBackend::init (this=0x111df70) at
/tmp/kde-krzysztof/arkoFytSM/kde-workspace-4.9.0/powerdevil/daemon/backends/upower/powerdevilupowerbackend.cpp:96
#13 0x00007f8f6c25f621 in PowerDevil::Core::loadCore (this=0x1106610,
backend=<optimized out>) at
/tmp/kde-krzysztof/arkoFytSM/kde-workspace-4.9.0/powerdevil/daemon/powerdevilcore.cpp:84
#14 0x00007f8f6c48cb73 in KDEDPowerDevil::init (this=0xff9430) at
/tmp/kde-krzysztof/arkoFytSM/kde-workspace-4.9.0/powerdevil/daemon/kdedpowerdevil.cpp:89
#15 0x00007f8f841140ae in QObject::event (this=0xff9430, e=<optimized out>) at
kernel/qobject.cpp:1204
#16 0x00007f8f8328f74c in QApplicationPrivate::notify_helper
(this=this at entry=0xea22c0, receiver=receiver at entry=0xff9430,
e=e at entry=0xf9ceb0) at kernel/qapplication.cpp:4554
#17 0x00007f8f83293c7a in QApplication::notify (this=0x7fff73cc5750,
receiver=0xff9430, e=0xf9ceb0) at kernel/qapplication.cpp:4415
#18 0x00007f8f85142816 in KApplication::notify (this=0x7fff73cc5750,
receiver=0xff9430, event=0xf9ceb0) at
/home/krzysztof/proj/kdelibs-4.9.0/kdeui/kernel/kapplication.cpp:311
#19 0x00007f8f840ff73e in QCoreApplication::notifyInternal
(this=0x7fff73cc5750, receiver=receiver at entry=0xff9430,
event=event at entry=0xf9ceb0) at kernel/qcoreapplication.cpp:876
#20 0x00007f8f84103091 in sendEvent (event=0xf9ceb0, receiver=0xff9430) at
kernel/qcoreapplication.h:231
#21 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0,
data=0xe272b0) at kernel/qcoreapplication.cpp:1500
#22 0x00007f8f8412d7a3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#23 postEventSourceDispatch (s=s at entry=0xea4800) at
kernel/qeventdispatcher_glib.cpp:279
#24 0x00007f8f7ebca3b5 in g_main_dispatch (context=0xea3700) at gmain.c:2539
#25 g_main_context_dispatch (context=context at entry=0xea3700) at gmain.c:3075
#26 0x00007f8f7ebca6e8 in g_main_context_iterate
(context=context at entry=0xea3700, block=block at entry=1,
dispatch=dispatch at entry=1, self=<error reading variable: Unhandled dwarf
expression opcode 0xfa>) at gmain.c:3146
#27 0x00007f8f7ebca7a4 in g_main_context_iteration (context=0xea3700,
may_block=1) at gmain.c:3207
#28 0x00007f8f8412d936 in QEventDispatcherGlib::processEvents (this=0xe2d790,
flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f8f8332f8ae in QGuiEventDispatcherGlib::processEvents
(this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f8f840fe73f in QEventLoop::processEvents
(this=this at entry=0x7fff73cc54d0, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f8f840fe9c8 in QEventLoop::exec (this=0x7fff73cc54d0, flags=...) at
kernel/qeventloop.cpp:204
#32 0x00007f8f841033a8 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1148
#33 0x00007f8f71c6fa70 in kdemain (argc=1, argv=0xe8b130) at
/home/krzysztof/proj/kdelibs-4.9.0/kded/kded.cpp:924
#34 0x0000000000408787 in launch (argc=argc at entry=1, _name=_name at entry=0x40b0f1
"kded4", args=args at entry=0x0, cwd=cwd at entry=0x0, envc=envc at entry=0,
envs=<optimized out>, envs at entry=0x0, reset_env=reset_env at entry=false,
tty=tty at entry=0x0, avoid_loops=avoid_loops at entry=false,
startup_id_str=startup_id_str at entry=0x40afd9 "0") at
/home/krzysztof/proj/kdelibs-4.9.0/kinit/kinit.cpp:734
#35 0x0000000000405e9a in main (argc=4, argv=<optimized out>,
envp=0x7fff73cc6140) at /home/krzysztof/proj/kdelibs-4.9.0/kinit/kinit.cpp:1849

Possible duplicates by query: bug 307225, bug 306265, bug 304785, bug 297785,
bug 295697.

Reported using DrKonqi

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