#2 KTrafficAnalyzer Crashes Inexplicably

[Bruce Williamson]

Operating System: Linux 2.6.34-12-desktop x86_64
Distribution: "openSUSE 11.3 (x86_64)"
KDE Platform Version: 4.4.4 (KDE 4.4.4) "release 6"
Qt Version: 4.6.3

-- Information about the crash:
KTrafficAnalyzer was minimised when it crashed inexplicably.

-- Backtrace:
Application: KTrafficAnalyzer (ktrafficanalyzer), signal: Segmentation fault
[KCrash Handler]
#5 setText (this=0x996d20, dateIndex=0) at
/usr/include/QtGui/qtablewidget.h:192
#6 DailyStatsWidget::updateStatistics (this=0x996d20, dateIndex=0) at
/usr/src/debug/KTrafficAnalyzer-0.5.3/stats/DailyStatsWidget.cpp:92
#7 0x0000000000418104 in DailyStatsWidget::qt_metacall (this=0x996d20,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4b402350)
at /usr/src/debug/KTrafficAnalyzer-0.5.3/DailyStatsWidget.moc:76
#8 0x00007f246080ea1f in QMetaObject::activate (sender=0x6e77a0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7fff4b402350)
at kernel/qobject.cpp:3295
#9 0x000000000040a5cc in TrafficWindow::updateStatsDialog (this=<value
optimized out>, _t1=0) at
/usr/src/debug/KTrafficAnalyzer-0.5.3/TrafficWindow.moc:99
#10 0x000000000040c66c in TrafficWindow::timerTimeout (this=0x6e77a0) at
/usr/src/debug/KTrafficAnalyzer-0.5.3/lib/TrafficWindow.cpp:226
#11 0x000000000040ce50 in TrafficWindow::qt_metacall (this=0x6e77a0,
_c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff4b4027e0) at
/usr/src/debug/KTrafficAnalyzer-0.5.3/TrafficWindow.moc:83
#12 0x00007f246080ea1f in QMetaObject::activate (sender=0x8eba70, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x0) at
kernel/qobject.cpp:3295
#13 0x00007f246080c22e in QObject::event (this=0x8eba70, e=0x7fff4b402f80) at
kernel/qobject.cpp:1212
#14 0x00007f245fbec4d4 in QApplicationPrivate::notify_helper (this=0x643970,
receiver=0x8eba70, e=0x7fff4b402f80) at kernel/qapplication.cpp:4302
#15 0x00007f245fbf4aca in QApplication::notify (this=<value optimized out>,
receiver=0x8eba70, e=0x7fff4b402f80) at kernel/qapplication.cpp:4185
#16 0x00007f2461568c06 in KApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libkdeui.so.5
#17 0x00007f24607fae4c in QCoreApplication::notifyInternal
(this=0x7fff4b4033c0, receiver=0x8eba70, event=0x7fff4b402f80) at
kernel/qcoreapplication.cpp:726
#18 0x00007f24608260c9 in sendEvent (this=0x6476e0) at
kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x6476e0) at
kernel/qeventdispatcher_unix.cpp:618
#20 0x00007f2460822ff8 in timerSourceDispatch (source=<value optimized out>) at
kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<value optimized out>) at
kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f245b4faa93 in g_main_dispatch (context=0x646520) at gmain.c:1960
#23 IA__g_main_context_dispatch (context=0x646520) at gmain.c:2513
#24 0x00007f245b4fb270 in g_main_context_iterate (context=0x646520, block=1,
dispatch=1, self=<value optimized out>) at gmain.c:2591
#25 0x00007f245b4fb510 in IA__g_main_context_iteration (context=0x646520,
may_block=1) at gmain.c:2654
#26 0x00007f246082367f in QEventDispatcherGlib::processEvents (this=0x62d8a0,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#27 0x00007f245fc8d14e in QGuiEventDispatcherGlib::processEvents (this=<value
optimized out>, flags=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007f24607fa292 in QEventLoop::processEvents (this=<value optimized
out>, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007f24607fa495 in QEventLoop::exec (this=0x7fff4b403310, flags=...) at
kernel/qeventloop.cpp:201
#30 0x00007f24607fe88b in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1003
#31 0x000000000040a175 in main (argc=3, argv=0x7fff4b4035b8) at
/usr/src/debug/KTrafficAnalyzer-0.5.3/KTrafficAnalyzer.cpp:53

[Viras]

It seems a bit hard to repeat the error. Can you please explain what you did when the crash occurs? Can you please also tell me what time of the day it was (in fact it is interesting if the crash occurs when there was a day change).

[Dave Plater]

I've experienced random segfaults and loss of stats with KTrafficAnalyzer on openSUSE 11.3 and with the combination of kde45 and qt47 from KDE:Distro:Factory svn rev 44 did the following every time :
Program received signal SIGSEGV, Segmentation fault.
0x000000000040b00c in TrafficWindow::interfaceChanged (this=0x79ca90) at /usr/src/debug/KTrafficAnalyzer-0.5.4.44/lib/TrafficWindow.cpp:539
539 if( stats != NULL ) delete stats;

I looked at TrafficWindow.cpp and found lines 80 to 95 - "//Create correct stats skeleton" commented out and uncommented them and this seems to have solved my issue although I don't know why the lines were commented out. This package is available for 11.3 standard in :
http://download.opensuse.org/repositories/home:/plater/openSUSE_11.3
and for KDE:Distro:Factory 11.3 (kde45 + qt47) in :
http://download.opensuse.org/repositories/home:/plater/KDE_11.3_Distro_Factory
The package is KTrafficAnalyzer-0.5.4.44-43.1

[Dave Plater]

Sorry for the late reply, the crash occurs at midnight if there is simultaneous network activity.