https://bugs.kde.org/show_bug.cgi?id=427379
Bug ID: 427379
Summary: Segfault in ProjectFileDataProvider::projectOpened()
when disabling Quick Open plugin right after a large
project is opened
Product: kdevelop
Version: git master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: UI: QuickOpen
Assignee: kdevelop-bugs-n...@kde.org
Reporter: igor...@gmail.com
Target Milestone: ---
SUMMARY
When a user disables Quick Open plugin right after a large project is opened,
before ProjectFileDataProvider::projectOpened() slot returns, the
ProjectFileDataProvider object is already destroyed when the projectOpened()'s
QApplication::processEvents() returns. This causes a segmentation fault when
the destroyed ProjectFileDataProvider resumes adding files to set.
STEPS TO REPRODUCE
1. Open a large project with tens of thousands of files, such as KDevelop
itself.
2. Locate the Quick Open plugin on KDevelop's Configure=>Plugins page and
uncheck its checkbox while the project is being loaded. Do not press "Apply" or
"OK" button yet.
3. As soon as the just opened project appears in Projects tool view, press the
"OK" button in the KDevelop's Configure dialog.
SOFTWARE/OS VERSIONS
Manjaro GNU/Linux, Xfce
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.1
ADDITIONAL INFORMATION
I am going to create a Merge Request with a fix soon.
BACKTRACE
Application: KDevelop (kdevelop), signal: Segmentation fault
[KCrash Handler]
#4 std::__atomic_base<int>::load(std::memory_order) const
(__m=std::memory_order_relaxed, this=0x40) at
/usr/include/c++/10.2.0/bits/atomic_base.h:426
#5 QAtomicOps<int>::loadRelaxed<int>(std::atomic<int> const&) (_q_value=...)
at /usr/include/qt/QtCore/qatomic_cxx11.h:239
#6 0x00007f44103a5a1a in QBasicAtomicInteger<int>::loadRelaxed() const
(this=0x40) at /usr/include/qt/QtCore/qbasicatomic.h:107
#7 0x00007f44103af5c0 in QtPrivate::RefCount::isShared() const (this=0x40) at
/usr/include/qt/QtCore/qrefcount.h:101
#8 0x00007f44103cc49b in QVector<ProjectFile>::isDetached() const
(this=0x55c4d27d0ab0) at /usr/include/qt/QtCore/qvector.h:113
#9 0x00007f44103cb64b in QVector<ProjectFile>::detach() (this=0x55c4d27d0ab0)
at /usr/include/qt/QtCore/qvector.h:405
#10 0x00007f44103c9962 in
QVector<ProjectFile>::end(QTypedArrayData<ProjectFile>::iterator)
(this=0x55c4d27d0ab0) at /usr/include/qt/QtCore/qvector.h:223
#11 0x00007f44103c6d82 in
ProjectFileDataProvider::fileAddedToSet(KDevelop::ProjectFileItem*)
(this=0x55c4d27d0a80, file=0x7f44381208e0) at
../plugins/quickopen/projectfilequickopen.cpp:270
#12 0x00007f44103c6a69 in
ProjectFileDataProvider::projectOpened(KDevelop::IProject*)
(this=0x55c4d27d0a80, project=0x55c4d807eb10) at
../plugins/quickopen/projectfilequickopen.cpp:249
#13 0x00007f44103d03e8 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>,
QtPrivate::List<KDevelop::IProject*>, void, void
(ProjectFileDataProvider::*)(KDevelop::IProject*)>::call(void
(ProjectFileDataProvider::*)(KDevelop::IProject*), ProjectFileDataProvider*,
void**) (f=(void (ProjectFileDataProvider::*)(ProjectFileDataProvider * const,
KDevelop::IProject *)) 0x7f44103c6984
<ProjectFileDataProvider::projectOpened(KDevelop::IProject*)>,
o=0x55c4d27d0a80, arg=0x7ffe68903210) at
/usr/include/qt/QtCore/qobjectdefs_impl.h:152
#14 0x00007f44103ced66 in QtPrivate::FunctionPointer<void
(ProjectFileDataProvider::*)(KDevelop::IProject*)>::call<QtPrivate::List<KDevelop::IProject*>,
void>(void (ProjectFileDataProvider::*)(KDevelop::IProject*),
ProjectFileDataProvider*, void**) (f=(void
(ProjectFileDataProvider::*)(ProjectFileDataProvider * const,
KDevelop::IProject *)) 0x7f44103c6984
<ProjectFileDataProvider::projectOpened(KDevelop::IProject*)>,
o=0x55c4d27d0a80, arg=0x7ffe68903210) at
/usr/include/qt/QtCore/qobjectdefs_impl.h:185
#15 0x00007f44103cd69a in QtPrivate::QSlotObject<void
(ProjectFileDataProvider::*)(KDevelop::IProject*),
QtPrivate::List<KDevelop::IProject*>, void>::impl(int,
QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1,
this_=0x55c4d10ca8a0, r=0x55c4d27d0a80, a=0x7ffe68903210, ret=0x0) at
/usr/include/qt/QtCore/qobjectdefs_impl.h:418
#16 0x00007f44aa18fa26 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffe68903210, r=0x55c4d27d0a80, this=0x55c4d10ca8a0) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#17 doActivate<false>(QObject*, int, void**) (sender=0x55c4cfc1dde0,
signal_index=4, argv=0x7ffe68903210) at kernel/qobject.cpp:3886
#18 0x00007f44aca91550 in
KDevelop::IProjectController::projectOpened(KDevelop::IProject*)
(this=0x55c4cfc1dde0, _t1=0x55c4d807eb10) at
kdevplatform/interfaces/KDevPlatformInterfaces_autogen/EWIEGA46WW/moc_iprojectcontroller.cpp:266
#19 0x00007f44adf7e48c in
KDevelop::ProjectController::projectImportingFinished(KDevelop::IProject*)
(this=0x55c4cfc1dde0, project=0x55c4d807eb10) at
../kdevplatform/shell/projectcontroller.cpp:1000
#20 0x00007f44adf9738d in KDevelop::ProjectPrivate::importDone(KJob*)
(this=0x55c4d45570c0, job=0x55c4d7c37b70) at
../kdevplatform/shell/project.cpp:221
#21 0x00007f44adf94c0a in operator()(KJob*) const (__closure=0x55c4d326e220,
job=0x55c4d7c37b70) at ../kdevplatform/shell/project.cpp:548
#22 0x00007f44adf96d7c in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>,
QtPrivate::List<KJob*>, void, KDevelop::Project::open(const
KDevelop::Path&)::<lambda(KJob*)> >::call(struct {...} &, void **) (f=...,
arg=0x7ffe689034d0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:146
#23 0x00007f44adf96cd4 in QtPrivate::Functor<KDevelop::Project::open(const
KDevelop::Path&)::<lambda(KJob*)>, 1>::call<QtPrivate::List<KJob*>,
void>(struct {...} &, void *, void **) (f=..., arg=0x7ffe689034d0) at
/usr/include/qt/QtCore/qobjectdefs_impl.h:256
#24 0x00007f44adf96c79 in
QtPrivate::QFunctorSlotObject<KDevelop::Project::open(const
KDevelop::Path&)::<lambda(KJob*)>, 1, QtPrivate::List<KJob*>, void>::impl(int,
QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=1,
this_=0x55c4d326e210, r=0x55c4d807eb10, a=0x7ffe689034d0, ret=0x0) at
/usr/include/qt/QtCore/qobjectdefs_impl.h:443
#25 0x00007f44aa18fa26 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffe689034d0, r=0x55c4d807eb10, this=0x55c4d326e210) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#26 doActivate<false>(QObject*, int, void**) (sender=0x55c4d7c37b70,
signal_index=6, argv=argv@entry=0x7ffe689034d0) at kernel/qobject.cpp:3886
#27 0x00007f44aa188bc0 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x55c4d7c37b70, m=m@entry=0x7f44aa69ae00
<KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3,
argv=argv@entry=0x7ffe689034d0) at kernel/qobject.cpp:3946
#28 0x00007f44aa648e0d in KJob::result(KJob*, KJob::QPrivateSignal)
(this=this@entry=0x55c4d7c37b70, _t1=<optimized out>, _t1@entry=0x55c4d7c37b70,
_t2=...) at
/usr/src/debug/build/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:576
#29 0x00007f44aa64992c in KJob::finishJob(bool) (this=0x55c4d7c37b70,
emitResult=<optimized out>) at
/usr/src/debug/kcoreaddons-5.73.0/src/lib/jobs/kjob.cpp:96
#30 0x00007f44acafd71d in KDevelop::ExecuteCompositeJob::slotResult(KJob*)
(this=0x55c4d7c37b70, job=0x55c4d3181150) at
../kdevplatform/util/executecompositejob.cpp:129
#31 0x00007f44aa18fa26 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffe689036a0, r=0x55c4d7c37b70, this=0x55c4d8159390) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#32 doActivate<false>(QObject*, int, void**) (sender=0x55c4d3181150,
signal_index=6, argv=argv@entry=0x7ffe689036a0) at kernel/qobject.cpp:3886
#33 0x00007f44aa188bc0 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x55c4d3181150, m=m@entry=0x7f44aa69ae00
<KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3,
argv=argv@entry=0x7ffe689036a0) at kernel/qobject.cpp:3946
#34 0x00007f44aa648e0d in KJob::result(KJob*, KJob::QPrivateSignal)
(this=this@entry=0x55c4d3181150, _t1=<optimized out>, _t1@entry=0x55c4d3181150,
_t2=...) at
/usr/src/debug/build/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:576
#35 0x00007f44aa64992c in KJob::finishJob(bool) (this=0x55c4d3181150,
emitResult=<optimized out>) at
/usr/src/debug/kcoreaddons-5.73.0/src/lib/jobs/kjob.cpp:96
#36 0x00007f44a98d43e5 in
KDevelop::FileManagerListJob::handleResults(QList<KIO::UDSEntry> const&)
(this=0x55c4d3181150, entriesIn=...) at
../kdevplatform/project/filemanagerlistjob.cpp:196
#37 0x00007f44a98a04f3 in
KDevelop::FileManagerListJob::qt_static_metacall(QObject*, QMetaObject::Call,
int, void**) (_o=0x55c4d3181150, _c=QMetaObject::InvokeMetaMethod, _id=4,
_a=0x7f443c9f67f8) at
kdevplatform/project/KDevPlatformProject_autogen/EWIEGA46WW/moc_filemanagerlistjob.cpp:108
#38 0x00007f44aa1851d2 in QObject::event(QEvent*) (this=0x55c4d3181150,
e=0x7f443c9f67b0) at kernel/qobject.cpp:1314
#39 0x00007f44aafe3702 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x55c4d3181150, e=0x7f443c9f67b0) at
kernel/qapplication.cpp:3671
#40 0x00007f44aa1587ba in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55c4d3181150, event=0x7f443c9f67b0) at
../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#41 0x00007f44aa15b2a3 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=0x0, event_type=0, data=0x55c4cf0ef090) at
kernel/qcoreapplication.cpp:1815
#42 0x00007f44aa1b1cf4 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x55c4cf1c26c0) at kernel/qeventdispatcher_glib.cpp:277
#43 0x00007f44a650b43c in g_main_context_dispatch () at
/usr/lib/libglib-2.0.so.0
#44 0x00007f44a65591d9 in () at /usr/lib/libglib-2.0.so.0
#45 0x00007f44a650a221 in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#46 0x00007f44aa1b1331 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55c4cf103cd0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#47 0x00007f44aa15713c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffe68903b10, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#48 0x00007f44ab1e6bda in QDialog::exec() (this=0x7ffe68903c60) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#49 0x00007f44adf6ee32 in KDevelop::UiController::showSettingsDialog()
(this=0x55c4cf7aa980) at ../kdevplatform/shell/uicontroller.cpp:580
#50 0x00007f44adf5304b in KDevelop::MainWindowPrivate::settingsDialog()
(this=0x55c4cf821c50) at ../kdevplatform/shell/mainwindow_actions.cpp:110
#51 0x00007f44adf17e50 in
KDevelop::MainWindowPrivate::qt_static_metacall(QObject*, QMetaObject::Call,
int, void**) (_o=0x55c4cf821c50, _c=QMetaObject::InvokeMetaMethod, _id=21,
_a=0x7ffe68903eb0) at
kdevplatform/shell/KDevPlatformShell_autogen/EWIEGA46WW/moc_mainwindow_p.cpp:227
#52 0x00007f44aa18fa60 in doActivate<false>(QObject*, int, void**)
(sender=0x55c4cf8dc1e0, signal_index=4, argv=argv@entry=0x7ffe68903eb0) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#53 0x00007f44aa188bc0 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x55c4cf8dc1e0, m=m@entry=0x7f44ab4ecc20
<QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1,
argv=argv@entry=0x7ffe68903eb0) at kernel/qobject.cpp:3946
#54 0x00007f44aafdcf23 in QAction::triggered(bool)
(this=this@entry=0x55c4cf8dc1e0, _t1=<optimized out>) at
.moc/moc_qaction.cpp:376
#55 0x00007f44aafdf805 in QAction::activate(QAction::ActionEvent)
(this=this@entry=0x55c4cf8dc1e0, event=event@entry=QAction::Trigger) at
kernel/qaction.cpp:1161
#56 0x00007f44ab160f4b in
QMenuPrivate::activateCausedStack(QVector<QPointer<QWidget> > const&, QAction*,
QAction::ActionEvent, bool) (this=this@entry=0x55c4cfcea550, causedStack=...,
action=action@entry=0x55c4cf8dc1e0, action_e=action_e@entry=QAction::Trigger,
self=self@entry=true) at widgets/qmenu.cpp:1353
#57 0x00007f44ab168582 in QMenuPrivate::activateAction(QAction*,
QAction::ActionEvent, bool) (this=0x55c4cfcea550, action=0x55c4cf8dc1e0,
action_e=QAction::Trigger, self=<optimized out>) at widgets/qmenu.cpp:1430
#58 0x00007f44ab024c8e in QWidget::event(QEvent*) (this=0x55c4cfcec3d0,
event=0x7ffe68904530) at kernel/qwidget.cpp:9027
#59 0x00007f44aafe3702 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x55c4cf0ffdb0, receiver=receiver@entry=0x55c4cfcec3d0,
e=e@entry=0x7ffe68904530) at kernel/qapplication.cpp:3671
#60 0x00007f44aafea987 in QApplication::notify(QObject*, QEvent*)
(this=0x7ffe68904230, receiver=0x55c4cfcec3d0, e=0x7ffe68904530) at
kernel/qapplication.cpp:3115
#61 0x00007f44aa1587ba in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55c4cfcec3d0, event=0x7ffe68904530) at
../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#62 0x00007f44aafe986e in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool)
(receiver=0x55c4cfcec3d0, event=event@entry=0x7ffe68904530, alienWidget=0x0,
nativeWidget=0x55c4cfcec3d0, buttonDown=buttonDown@entry=0x7f44ab51c350
<qt_button_down>, lastMouseReceiver=..., spontaneous=true,
onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2603
#63 0x00007f44ab03d94f in QWidgetWindow::handleMouseEvent(QMouseEvent*)
(this=0x55c4d22a1df0, event=0x7ffe689047f0) at
/usr/include/c++/10.1.0/bits/atomic_base.h:420
#64 0x00007f44ab0407bf in QWidgetWindow::event(QEvent*) (this=0x55c4d22a1df0,
event=0x7ffe689047f0) at kernel/qwidgetwindow.cpp:296
#65 0x00007f44aafe3702 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x55c4d22a1df0, e=0x7ffe689047f0) at
kernel/qapplication.cpp:3671
#66 0x00007f44aa1587ba in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55c4d22a1df0, event=0x7ffe689047f0) at
../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#67 0x00007f44aa7df37c in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
(e=0x55c4d30d5410) at kernel/qguiapplication.cpp:2214
#68 0x00007f44aa7b4b4c in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1175
#69 0x00007f4499103c8c in xcbSourceDispatch(GSource*, GSourceFunc, gpointer)
(source=<optimized out>) at qxcbeventdispatcher.cpp:105
#70 0x00007f44a650b43c in g_main_context_dispatch () at
/usr/lib/libglib-2.0.so.0
#71 0x00007f44a65591d9 in () at /usr/lib/libglib-2.0.so.0
#72 0x00007f44a650a221 in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#73 0x00007f44aa1b1331 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55c4cf103cd0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#74 0x00007f44aa15713c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffe68904b20, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#75 0x00007f44aa15f5c4 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#76 0x000055c4cdac984a in main(int, char**) (argc=3, argv=0x7ffe68904f98) at
../app/main.cpp:856
[Inferior 1 (process 212766) detached]
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