https://bugs.kde.org/show_bug.cgi?id=462711
Bug ID: 462711
Summary: Discover crashes with --feedback
Classification: Applications
Product: Discover
Version: master
Platform: Neon
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: discover
Assignee: plasma-b...@kde.org
Reporter: k...@privat.broulik.de
CC: aleix...@kde.org
Target Milestone: ---
SUMMARY
Running plasma-discover --feedback which is executed by System Settings has
Discover crash on teardown.
STEPS TO REPRODUCE
1. Run plasma-discover --feedback
OBSERVED RESULT
It crashes
EXPECTED RESULT
It does not crash
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: git master as of 2022-12-04
ADDITIONAL INFORMATION
It prints "Must construct a QGuiApplication first." which is why inputMethod
returns null in the backtrace.
#6 QInputMethodPrivate::platformInputContext() const (this=Python Exception
<class 'gdb.MemoryError'>: Cannot access memory at address 0x8
#7 QInputMethod::inputDirection() const (this=0x0) at
kernel/qinputmethod.cpp:298
#8 0x00007f4b6e8382f5 in QQuickTextPrivate::determineHorizontalAlignment()
(this=0x55de1be87950) at items/qquicktext.cpp:1990
#9 QQuickTextPrivate::determineHorizontalAlignment() (this=0x55de1be87950) at
items/qquicktext.cpp:1986
#10 0x00007f4b6e83ef8f in QQuickText::setText(QString const&)
(this=0x55de1be87880, n=<optimized out>) at items/qquicktext.cpp:1737
#11 0x00007f4b663660f3 in QQuickMnemonicLabel::updateMnemonic() () at
/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5
#12 0x00007f4b6d9101fb in QQmlPropertyData::writeProperty(QObject*, void*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., value=0x7ffeae8ec768,
target=<optimized out>, this=0x7f4b1c1deb78) at
../../include/QtQml/5.15.7/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:391
#13 GenericBinding<10>::doStore<QString>(QString, QQmlPropertyData const*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., pd=0x7f4b1c1deb78,
value=..., this=0x55de1be88380) at qml/qqmlbinding.cpp:342
#14 GenericBinding<10>::write(QV4::Value const&, bool,
QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1be88380, result=...,
isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:323
#15 0x00007f4b6d910a97 in
QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&,
QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) (this=0x55de1be88380,
watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:258
#16 0x00007f4b6d90e5f4 in
QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1be88380,
flags=...) at qml/qqmlbinding.cpp:194
#17 0x00007f4b6d8eb0f5 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) (endpoint=<optimized out>, a=0x0) at qml/qqmlnotifier.cpp:104
#18 0x00007f4b6ccacc7b in doActivate<false>(QObject*, int, void**)
(sender=0x55de1be8b7b0, signal_index=7, argv=0x0) at kernel/qobject.cpp:3811
#19 0x00007f4b21801198 in () at
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/libKirigamiPlugin.so
#20 0x00007f4b21801b3a in () at
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/libKirigamiPlugin.so
#21 0x00007f4b6d9101fb in QQmlPropertyData::writeProperty(QObject*, void*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., value=0x7ffeae8ee398,
target=<optimized out>, this=0x7f4b1c170f58) at
../../include/QtQml/5.15.7/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:391
#22 GenericBinding<10>::doStore<QString>(QString, QQmlPropertyData const*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., pd=0x7f4b1c170f58,
value=..., this=0x55de1be8b9b0) at qml/qqmlbinding.cpp:342
#23 GenericBinding<10>::write(QV4::Value const&, bool,
QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1be8b9b0, result=...,
isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:323
#24 0x00007f4b6d910a97 in
QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&,
QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) (this=0x55de1be8b9b0,
watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:258
#25 0x00007f4b6d90e5f4 in
QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1be8b9b0,
flags=...) at qml/qqmlbinding.cpp:194
#26 0x00007f4b6d8eb0f5 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) (endpoint=<optimized out>, a=0x7ffeae8efec0) at
qml/qqmlnotifier.cpp:104
#27 0x00007f4b6ccacc7b in doActivate<false>(QObject*, int, void**)
(sender=0x55de1b623d70, signal_index=3, argv=0x7ffeae8efec0) at
kernel/qobject.cpp:3811
#28 0x00007f4b65d61da6 in QQuickAction::textChanged(QString const&) () at
/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#29 0x00007f4b6d9101fb in QQmlPropertyData::writeProperty(QObject*, void*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., value=0x7ffeae8eff08,
target=<optimized out>, this=0x7f4b1c10bdf8) at
../../include/QtQml/5.15.7/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:391
#30 GenericBinding<10>::doStore<QString>(QString, QQmlPropertyData const*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., pd=0x7f4b1c10bdf8,
value=..., this=0x55de1b4ee630) at qml/qqmlbinding.cpp:342
#31 GenericBinding<10>::write(QV4::Value const&, bool,
QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1b4ee630, result=...,
isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:323
#32 0x00007f4b6d910a97 in
QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&,
QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) (this=0x55de1b4ee630,
watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:258
#33 0x00007f4b6d90e5f4 in
QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) (this=0x55de1b4ee630,
flags=...) at qml/qqmlbinding.cpp:194
#34 0x00007f4b6d8eb0f5 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) (endpoint=<optimized out>, a=0x0) at qml/qqmlnotifier.cpp:104
#35 0x00007f4b6ccacc7b in doActivate<false>(QObject*, int, void**)
(sender=0x55de1b623d70, signal_index=24, argv=0x0) at kernel/qobject.cpp:3811
#36 0x00007f4b6d89b75c in QQmlData::destroyed(QObject*) (this=0x55de1b6eb2f0,
object=0x55de1b1ef000) at qml/qqmlengine.cpp:1961
#37 0x00007f4b6ccaae4b in QObject::~QObject() (this=<optimized out>,
__in_chrg=<optimized out>) at kernel/qobject.cpp:1019
#38 0x00007f4b6eb5a71d in Category::~Category() () at
/usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#39 0x00007f4b3168f4e6 in KNSBackend::~KNSBackend() () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#40 0x00007f4b3168f6ed in KNSBackend::~KNSBackend() () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#41 0x00007f4b6cca013e in QObjectPrivate::deleteChildren()
(this=0x55de1ae45330) at kernel/qobject.cpp:2137
#42 0x00007f4b6ccab1c6 in QObject::~QObject() (this=<optimized out>,
__in_chrg=<optimized out>) at kernel/qobject.cpp:1115
#43 0x000055de1955bc78 in ()
#44 0x00007f4b6c590d90 in __libc_start_call_main
(main=main@entry=0x55de1955b340, argc=argc@entry=2,
argv=argv@entry=0x7ffeae8f1ef8) at ../sysdeps/nptl/libc_start_call_main.h:58
#45 0x00007f4b6c590e40 in __libc_start_main_impl (main=0x55de1955b340, argc=2,
argv=0x7ffeae8f1ef8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffeae8f1ee8) at ../csu/libc-start.c:392
#46 0x000055de1955c6a5 in ()
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