https://bugs.kde.org/show_bug.cgi?id=433838
Bug ID: 433838
Summary: System monitor crashes after terminating a zombie
Gwenview
Product: ksysguard
Version: 5.19.5
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: ksysguard-b...@kde.org
Reporter: vi...@id.iit.edu
CC: plasma-b...@kde.org
Target Milestone: ---
Application: ksysguard (5.19.5)
Qt Version: 5.14.2
Frameworks Version: 5.74.0
Operating System: Linux 5.8.0-43-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.10
-- Information about the crash:
- What I was doing when the application crashed:
Gwenview has a history of crashing on my system (I keep using it because even
with multiple crashes per session it's a damn useful little app), and sometimes
fails to exit fully afterwards. When I use System Monitor to find and issue
either SIGTERM or SIGKILL -- often with a keyboard SHIFT-DEL -- a significant %
of the time, maybe 20-25% of the time, System Monitor crashes immediately after
successful termination of Gwenview.
I believe one or two other apps have caused a similar ksysguard crash before,
but I failed to note which. I will pay more attention next time and submit
further info if warranted.
-- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
[KCrash Handler]
#4 0x00007fae41ec6d2d in operator==(QString const&, QString const&) (s1=...,
s2=...) at text/qstring.cpp:3383
#5 0x00007fae42d96e79 in QLabel::setText(QString const&) (this=0x56234c0b6250,
text=...) at widgets/qlabel.cpp:287
#6 0x00007fae43b039db in TopLevel::answerReceived(int, QList<QByteArray>
const&) (this=0x56234c3a8990, id=<optimized out>, answerList=...) at
./gui/ksysguard.cpp:466
#7 0x00007fae43846122 in KSGRD::SensorAgent::processAnswer(char const*, int)
(this=0x56234c3eed30, buf=<optimized out>, buflen=<optimized out>) at
./ksgrd/SensorAgent.cpp:91
#8 0x00007fae4384c325 in KSGRD::SensorShellAgent::msgRcvd()
(this=0x56234c3eed30) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:208
#9 0x00007fae4205a2e6 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffd6961b450, r=0x56234c3eed30, this=0x56234c13a340) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#10 doActivate<false>(QObject*, int, void**) (sender=0x56234c010620,
signal_index=15, argv=argv@entry=0x7ffd6961b450) at kernel/qobject.cpp:3870
#11 0x00007fae42054068 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=<optimized out>, m=m@entry=0x7fae422adde0
<QProcess::staticMetaObject>, local_signal_index=local_signal_index@entry=6,
argv=argv@entry=0x7ffd6961b450) at kernel/qobject.cpp:3930
#12 0x00007fae41f919c1 in
QProcess::readyReadStandardOutput(QProcess::QPrivateSignal) (this=<optimized
out>, _t1=...) at .moc/moc_qprocess.cpp:367
#13 0x00007fae41f9711d in
QProcessPrivate::tryReadFromChannel(QProcessPrivate::Channel*)
(this=0x56234c134cc0, channel=0x56234c134dd0) at io/qprocess.cpp:1057
#14 0x00007fae41f97675 in QProcessPrivate::_q_canReadStandardError()
(this=<optimized out>) at io/qprocess.cpp:1084
#15 QProcess::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)
(_o=<optimized out>, _c=<optimized out>, _id=<optimized out>,
_a=0x7ffd6961b600) at .moc/moc_qprocess.cpp:210
#16 0x00007fae4205a320 in doActivate<false>(QObject*, int, void**)
(sender=0x56234c3fb550, signal_index=3, argv=argv@entry=0x7ffd6961b600) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#17 0x00007fae42054068 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x56234c3fb550, m=m@entry=0x7fae422b01c0
<QSocketNotifier::staticMetaObject>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd6961b600)
at kernel/qobject.cpp:3930
#18 0x00007fae4205d8b5 in QSocketNotifier::activated(int,
QSocketNotifier::QPrivateSignal) (this=this@entry=0x56234c3fb550,
_t1=<optimized out>, _t2=...) at .moc/moc_qsocketnotifier.cpp:141
#19 0x00007fae4205dc51 in QSocketNotifier::event(QEvent*) (this=0x56234c3fb550,
e=0x7ffd6961b700) at kernel/qsocketnotifier.cpp:266
#20 0x00007fae42c60013 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x56234c3fb550, e=0x7ffd6961b700) at
kernel/qapplication.cpp:3685
#21 0x00007fae420241ca in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x56234c3fb550, event=0x7ffd6961b700) at
../../include/QtCore/../../src/corelib/kernel/qobject.h:153
#22 0x00007fae4207c425 in socketNotifierSourceDispatch(GSource*, GSourceFunc,
gpointer) (source=0x56234b74b8b0) at kernel/qeventdispatcher_glib.cpp:107
#23 0x00007fae396d74db in g_main_dispatch (context=0x7fae28005000) at
../../../glib/gmain.c:3325
#24 g_main_context_dispatch (context=0x7fae28005000) at
../../../glib/gmain.c:4016
#25 0x00007fae396d7788 in g_main_context_iterate
(context=context@entry=0x7fae28005000, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4092
#26 0x00007fae396d7853 in g_main_context_iteration (context=0x7fae28005000,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4157
#27 0x00007fae4207b843 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x56234b755e50, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#28 0x00007fae42022a4b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffd6961b910, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:136
#29 0x00007fae4202afc6 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:118
#30 0x00007fae4256ede0 in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1860
#31 0x00007fae42c5ff89 in QApplication::exec() () at
kernel/qapplication.cpp:2825
#32 0x00007fae43b04af3 in kdemain(int, char**) (argc=<optimized out>,
argv=<optimized out>) at ./gui/ksysguard.cpp:627
#33 0x00007fae438d4cb2 in __libc_start_main (main=0x5623498d5060 <main>,
argc=1, argv=0x7ffd6961bb38, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd6961bb28) at ../csu/libc-start.c:314
#34 0x00005623498d509e in _start ()
[Inferior 1 (process 379566) detached]
The reporter indicates this bug may be a duplicate of or related to bug 433733.
Possible duplicates by query: bug 433733, bug 428064, bug 425064, bug 425045,
bug 423382.
Reported using DrKonqi
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