Bug 396489

Summary: System Settings - Launch feedback crash
Product: [Applications] systemsettings Reporter: oysstu <oysstu>
Component: kcm_launchAssignee: Unassigned bugs <unassigned-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bugseforuns, nate
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.13.3   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description oysstu 2018-07-13 20:04:21 UTC 
Application: systemsettings5 (5.13.3)

Qt Version: 5.11.1
Frameworks Version: 5.47.0
Operating System: Linux 4.14.55-1-lts x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
In system settings, select the Applications - Launch feedback pane. The title bar starts rapidly switching between having a star (indicating changed settings) and not. Selecting another tab/pane at this point will crash system settings.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa3bb332840 (LWP 11976))]

Thread 7 (Thread 0x7fa37f171700 (LWP 12491)):
#0  0x00007fa3b6983934 in read () at /usr/lib/libc.so.6
#1  0x00007fa3afc4fed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc09ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3afc0a4c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa3afc0a8e2 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa36f4d5348 in  () at /usr/lib/libgio-2.0.so.0
#6  0x00007fa3afc32a2a in  () at /usr/lib/libglib-2.0.so.0
#7  0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fa377fff700 (LWP 12490)):
#0  0x00007fa3b6983934 in read () at /usr/lib/libc.so.6
#1  0x00007fa3afc4fed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc09ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3afc0a4c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa3afc0a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa3afc0a692 in  () at /usr/lib/libglib-2.0.so.0
#6  0x00007fa3afc32a2a in  () at /usr/lib/libglib-2.0.so.0
#7  0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fa385fe3700 (LWP 12058)):
#0  0x00007fa3b6983934 in read () at /usr/lib/libc.so.6
#1  0x00007fa3afc4fed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc09ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3afc0a4c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa3afc0a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa3b72a4054 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fa3b724f94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fa3b7098a99 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fa3b4d909c9 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fa3b70a2b45 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fa38d97e700 (LWP 11983)):
#0  0x00007fa3b6983934 in read () at /usr/lib/libc.so.6
#1  0x00007fa3afc4fed1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc09ff8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3afc0a4c6 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fa3afc0a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fa3b72a4054 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fa3b724f94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fa3b7098a99 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fa3b4d909c9 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fa3b70a2b45 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fa395ed3700 (LWP 11981)):
#0  0x00007fa3b6987ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fa3afc0a523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc0a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3b72a4054 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa3b724f94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa3b7098a99 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa3b4d909c9 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fa3b70a2b45 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fa39e972700 (LWP 11979)):
#0  0x00007fa3b6987ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fa3afc0a523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa3afc0a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa3b72a4054 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa3b724f94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa3b7098a99 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa3b76f4976 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fa3b70a2b45 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa3b226f075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa3b699253f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fa3bb332840 (LWP 11976)):
[KCrash Handler]
#6  0x00007fa3bab41362 in  () at /usr/lib/libKF5KCMUtils.so.5
#7  0x00007fa3b727ac50 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#8  0x00007fa36c0227ce in  () at /usr/lib/qt/plugins/kcms/kcm_launchfeedback.so
#9  0x00007fa36c024f7b in  () at /usr/lib/qt/plugins/kcms/kcm_launchfeedback.so
#10 0x00007fa3b4ca83d5 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#11 0x00007fa3b4ca915f in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#12 0x00007fa3b4ca9256 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#13 0x00007fa3b4cbc45c in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#14 0x00007fa3b4cc807a in  () at /usr/lib/libQt5Qml.so.5
#15 0x00007fa38c4e5b3d in  ()
#16 0x00007fa3853a4320 in  ()
#17 0x00007fa3853a4328 in  ()
#18 0x000055ac4ab4f860 in  ()
#19 0x0000000000000000 in  ()

Reported using DrKonqi
Comment 1 Christoph Feck 2018-08-02 20:53:31 UTC 
Steps to reproduce:

gdb --args kcmshell5 kcm_launchfeedback
(gdb) run
click Cancel button

Backtrace randomly varies between KQuickAddons::ConfigModule::needsSave() or QQmlData::isSignalConnected(); might be a stale QtQuick object.
Comment 2 Patrick Silva 2018-08-04 12:00:38 UTC 
duplicate of bug 392590?
Comment 3 Christoph Feck 2018-08-04 12:26:29 UTC 
Yes. Didn't see it, because it wasn't marked 'crash'. Changed.

*** This bug has been marked as a duplicate of bug 392590 ***