Bug 390647

Summary: Discover crashed
Product: [Applications] Discover Reporter: izhe
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED FIXED    
Severity: crash CC: nate
Priority: NOR Keywords: drkonqi
Version: 5.12.5   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: https://commits.kde.org/discover/c62613f1175c0fc12a6f5af6f08a84dc1ce3e136 Version Fixed In:
Sentry Crash Report:

Description izhe 2018-02-17 23:36:14 UTC 
Application: plasma-discover (5.11.5)

Qt Version: 5.9.4
Frameworks Version: 5.42.0
Operating System: Linux 4.14.18-300.fc27.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
Click on the Firefox item to open the program detail page and see how it instantly crashes.
I have Firefox installed from the official Fedora 27 repos.

The crash can be reproduced every time.

-- Backtrace:
Application: Descubrir (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcf20f748c0 (LWP 25134))]

Thread 13 (Thread 0x7fcebb7fe700 (LWP 25230)):
#0  0x00007fcf189791ba in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fcf1ba5a423 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib64/libQt5Core.so.5
#2  0x00007fcf1ba56da2 in QThreadPoolThread::run() () at /lib64/libQt5Core.so.5
#3  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#5  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fceabfff700 (LWP 25192)):
#0  0x00007fcf13a1d3d9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007fcf139d7e5e in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fceb8d08700 (LWP 25191)):
#0  0x00007fcf1adea3db in poll () at /lib64/libc.so.6
#1  0x00007fcf139d7e99 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fceba5ef700 (LWP 25149)):
#0  0x00007fcf1adea3db in poll () at /lib64/libc.so.6
#1  0x00007fcf139d7e99 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fced5ae0700 (LWP 25144)):
#0  0x00007fcf1ade5888 in read () at /lib64/libc.so.6
#1  0x00007fcf13a1c0a0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d79a8 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007fcf139d7e40 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#10 0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fced7fff700 (LWP 25141)):
#0  0x00007fcf1ade5888 in read () at /lib64/libc.so.6
#1  0x00007fcf13a1c0a0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d79a8 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007fcf139d7e40 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007fcf139d8232 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#5  0x00007fcee3ca7b56 in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0
#6  0x00007fcf139ff486 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#7  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fcedc8e7700 (LWP 25140)):
#0  0x00007fcf1adea3db in poll () at /lib64/libc.so.6
#1  0x00007fcf139d7e99 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf139d7ff1 in glib_worker_main () at /lib64/libglib-2.0.so.0
#4  0x00007fcf139ff486 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#6  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fcedddfd700 (LWP 25139)):
#0  0x00007fcf139d7248 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007fcf139d7dcb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fceed7c3700 (LWP 25138)):
#0  0x00007fcf1bc56664 in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007fcf139d73f9 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7dcb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fcf1ff1b116 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#8  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#10 0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fcef7fff700 (LWP 25137)):
#0  0x00007fcf1ade5888 in read () at /lib64/libc.so.6
#1  0x00007fcf13a1c0a0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d79a8 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007fcf139d7e40 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007fcf1c953e75 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#11 0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fcefd87d700 (LWP 25136)):
#0  0x00007fcf1adea3db in poll () at /lib64/libc.so.6
#1  0x00007fcf139d7e99 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fcf139d7fac in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fcf1bc5690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fcf1bc0462a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1ba558ca in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fcf1ddcd449 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#9  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fcf0701f700 (LWP 25135)):
#0  0x00007fcf1adea3db in poll () at /lib64/libc.so.6
#1  0x00007fcf13360fe7 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007fcf13362dda in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007fcf09bbdbf9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007fcf1ba59de2 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007fcf1897261b in start_thread () at /lib64/libpthread.so.0
#6  0x00007fcf1adf698f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fcf20f748c0 (LWP 25134)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007fcf1fbc068d in AbstractResource::isInstalled() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#8  0x00007fced42a2bcf in AppPackageKitResource::addonsInformation() () at /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#9  0x00007fcf1fbc61f1 in ApplicationAddonsModel::resetState() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007fcf1fbc62a2 in ApplicationAddonsModel::setApplication(AbstractResource*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#11 0x00007fcf1c93d50b in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#12 0x00007fcf1c93e71e in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /lib64/libQt5Qml.so.5
#13 0x00007fcf1c93b4c3 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#14 0x00007fcf1c94728b in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#15 0x00007fcf1c8c20ce in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /lib64/libQt5Qml.so.5
#16 0x00007fcf1c8c21e7 in QQmlComponentPrivate::completeCreate() () at /lib64/libQt5Qml.so.5
#17 0x00007fcf1c8c3259 in QQmlComponent::createObject(QQmlV4Function*) () at /lib64/libQt5Qml.so.5
#18 0x00007fcf1c8c51c4 in QQmlComponent::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#19 0x00007fcf1c8c5575 in QQmlComponent::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#20 0x00007fcf1c906d79 in QQmlObjectOrGadget::metacall(QMetaObject::Call, int, void**) const () at /lib64/libQt5Qml.so.5
#21 0x00007fcf1c88625d in QV4::QObjectMethod::callInternal(QV4::CallData*, QV4::Scope&) const () at /lib64/libQt5Qml.so.5
#22 0x00007fcf1c89ed1d in QV4::Runtime::method_callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /lib64/libQt5Qml.so.5
#23 0x00007fcef4117e39 in  ()
#24 0x000055ab5bde1c00 in  ()
#25 0x0003200000000003 in  ()
#26 0x00007fcef7000608 in  ()
#27 0x00007fcef7000600 in  ()
#28 0x0000000000000000 in  ()

Reported using DrKonqi
Comment 1 Aleix Pol 2018-02-23 15:50:23 UTC 
Please update to a supported version of Plasma and provide a backtrace with debug symbols.
Comment 2 izhe 2018-05-22 15:09:47 UTC 
Application: Discover (plasma-discover), signal: Segmentation fault
[KCrash Handler]
#6  0x00007f91a5f5e8bb in AbstractResource::isInstalled() const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#7  0x00007f91535db5fc in  () at /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#8  0x00007f91a5f65cb5 in ApplicationAddonsModel::resetState() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007f91a5f65d66 in ApplicationAddonsModel::setApplication(AbstractResource*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007f91a3276824 in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#11 0x00007f91a3277956 in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /lib64/libQt5Qml.so.5
#12 0x00007f91a3274643 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#13 0x00007f91a32813f4 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#14 0x00007f91a31fa12e in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /lib64/libQt5Qml.so.5
#15 0x00007f91a31fa247 in QQmlComponentPrivate::completeCreate() () at /lib64/libQt5Qml.so.5
#16 0x00007f91a31fb38d in QQmlComponent::createObject(QQmlV4Function*) () at /lib64/libQt5Qml.so.5
#17 0x00007f91a31fd3e4 in QQmlComponent::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#18 0x00007f91a31fd853 in QQmlComponent::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#19 0x00007f91a32419e5 in QQmlObjectOrGadget::metacall(QMetaObject::Call, int, void**) const () at /lib64/libQt5Qml.so.5
#20 0x00007f91a31be8ee in QV4::QObjectMethod::callInternal(QV4::CallData*, QV4::Scope&) const () at /lib64/libQt5Qml.so.5
#21 0x00007f91a31d7116 in QV4::Runtime::method_callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /lib64/libQt5Qml.so.5
#22 0x00007f917d9ad4b8 in  ()
#23 0x00007f917018c190 in  ()
#24 0x0003200000000003 in  ()
#25 0x0000000000000000 in  ()
Comment 3 Aleix Pol 2018-05-23 15:08:14 UTC 
Git commit c62613f1175c0fc12a6f5af6f08a84dc1ce3e136 by Aleix Pol.
Committed on 23/05/2018 at 11:16.
Pushed by apol into branch 'Plasma/5.12'.

Adapt if the application object is destroyed

I haven't been able to reproduce the issue from the bug but this seems
to be the issue.

M  +5    -0    libdiscover/ApplicationAddonsModel.cpp

https://commits.kde.org/discover/c62613f1175c0fc12a6f5af6f08a84dc1ce3e136