Bug 365655

Summary: Crash when performing update
Product: [Applications] Discover Reporter: Antonio Rojas <arojas>
Component: discoverAssignee: Unassigned bugs mailing-list <unassigned-bugs>
Status: RESOLVED FIXED    
Severity: crash CC: aleixpol, kde
Priority: NOR Keywords: drkonqi
Version: 5.7.1   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Antonio Rojas 2016-07-14 09:53:01 UTC 
Application: plasma-discover (5.7.1)
 (Compiled from sources)
Qt Version: 5.7.0
Frameworks Version: 5.24.0
Operating System: Linux 4.6.3-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:

Just click on "Update" in the system tray notifier popup, discover opens and crashes immediately

The crash can be reproduced every time.

-- Backtrace:
Application: Descubrir (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5cbe00e800 (LWP 17380))]

Thread 7 (Thread 0x7f5c8acc2700 (LWP 17393)):
#0  0x00007f5cb6ba8458 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f5cba7dab66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f5cba7d6274 in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#4  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 6 (Thread 0x7f5c8b4c3700 (LWP 17392)):
#0  0x00007f5cb9ddf6cd in poll () from /usr/lib/libc.so.6
#1  0x00007f5cb4ef0fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f5cb4ef10ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f5cbaa0859b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f5cba9b20da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f5cba7d50f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 5 (Thread 0x7f5c98f36700 (LWP 17384)):
#0  0x00007f5cb9ddb72d in read () from /usr/lib/libc.so.6
#1  0x00007f5cb4f33c80 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f5cb4ef0ab4 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3  0x00007f5cb4ef0f74 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007f5cb4ef10ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0x00007f5cbaa0859b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f5cba9b20da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#7  0x00007f5cba7d50f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#8  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#9  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#10 0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7f5ca0eb8700 (LWP 17383)):
#0  0x00007f5cb4eedfd3 in ?? () from /usr/lib/libglib-2.0.so.0
#1  0x00007f5cb4ef04ab in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#2  0x00007f5cb4ef0efb in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f5cb4ef10ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007f5cbaa0859b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f5cba9b20da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f5cba7d50f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7  0x00007f5cbcf4c445 in QQmlThreadPrivate::run (this=0x1e797d0) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/ftw/qqmlthread.cpp:147
#8  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#9  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#10 0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f5ca20c9700 (LWP 17382)):
#0  0x00007f5cb9ddf6cd in poll () from /usr/lib/libc.so.6
#1  0x00007f5cb4ef0fd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f5cb4ef10ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f5cbaa0859b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f5cba9b20da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f5cba7d50f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f5cb7445e75 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5caa976700 (LWP 17381)):
#0  0x00007f5cb9ddf6cd in poll () from /usr/lib/libc.so.6
#1  0x00007f5cb4a828e0 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f5cb4a84679 in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f5cac4ab469 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f5cba7d9d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f5cb6ba2484 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f5cb9de86dd in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f5cbe00e800 (LWP 17380)):
[KCrash Handler]
#5  0x00007f5cbd2b46a2 in ResourcesUpdatesModel::isProgressing (this=<optimized out>) at /build/discover/src/discover-5.7.1/libdiscover/resources/ResourcesUpdatesModel.cpp:208
#6  0x00007f5cbd2c3ad5 in ResourcesUpdatesModel::qt_static_metacall (_o=_o@entry=0x21c0ef0, _c=_c@entry=QMetaObject::ReadProperty, _id=_id@entry=4, _a=_a@entry=0x7ffd40c93250) at /build/discover/src/build/libdiscover/moc_ResourcesUpdatesModel.cpp:253
#7  0x00007f5cbd2c78db in ResourcesUpdatesModel::qt_metacall (this=0x21c0ef0, _c=QMetaObject::ReadProperty, _id=4, _a=0x7ffd40c93250) at /build/discover/src/build/libdiscover/moc_ResourcesUpdatesModel.cpp:300
#8  0x00007f5cbce8f6be in ReadAccessor::Direct (property=..., n=0x0, output=0x7ffd40c93230, object=0x21c0ef0) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:135
#9  LoadProperty<ReadAccessor::Direct> (v4=0x1e7b360, object=0x21c0ef0, property=..., notifier=0x0) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:174
#10 0x00007f5cbce9028d in QV4::QObjectWrapper::getProperty (engine=engine@entry=0x1e7b360, object=0x21c0ef0, property=0x7f5c943dad78, captureRequired=<optimized out>) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:384
#11 0x00007f5cbce90d15 in QV4::QObjectWrapper::getProperty (engine=engine@entry=0x1e7b360, object=<optimized out>, propertyIndex=<optimized out>, captureRequired=<optimized out>) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:639
#12 0x00007f5cbceab1a4 in QV4::Runtime::getQmlQObjectProperty (engine=0x1e7b360, object=..., propertyIndex=<optimized out>, captureRequired=<optimized out>) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4runtime.cpp:1417
#13 0x00007f5ca801d9b6 in ?? ()
#14 0x000000000000000a in ?? ()
#15 0x00007f5c9b8013a8 in ?? ()
#16 0x00007f5c9b801400 in ?? ()
#17 0x00007f5cbce94177 in CallOverloaded (propertyCache=0x7f5c9b801010, callArgs=0x1e7b360, engine=0x1e7b360, data=..., object=...) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:1451
#18 QV4::QObjectMethod::callInternal (this=<optimized out>, callData=<optimized out>) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:1863
#19 0x00007ffd40c93670 in ?? ()
#20 0x00000000023cee10 in ?? ()
#21 0x00007f5cbcf30d11 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x1e7b360, isUndefined=isUndefined@entry=0x7ffd40c93620) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmljavascriptexpression.cpp:156
#22 0x00007f5cbcf38886 in QQmlBinding::update (this=0x1e7b360, flags=...) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlbinding.cpp:193
#23 0x00007f5cbcf3922e in QQmlBinding::refresh (this=<optimized out>) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlbinding.cpp:409
#24 0x00007f5cbcf0e044 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x7ffd40c95150) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlnotifier.cpp:100
#25 0x00007f5cbceb819c in QQmlData::signalEmitted (object=0x21db310, index=26, a=0x7ffd40c95150) at /tmp/makepkg/qt5-declarative-debug/src/qtdeclarative-opensource-src-5.7.0/src/qml/qml/qqmlengine.cpp:780
#26 0x00007f5cba9dfc0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#27 0x00007f5cbd2c127f in UpdateModel::hasUpdatesChanged (this=this@entry=0x21db310, _t1=<optimized out>) at /build/discover/src/build/libdiscover/moc_UpdateModel.cpp:210
#28 0x00007f5cbd2a58d1 in UpdateModel::setResources (this=this@entry=0x21db310, resources=...) at /build/discover/src/discover-5.7.1/libdiscover/UpdateModel/UpdateModel.cpp:217
#29 0x00007f5cbd2a5c5c in UpdateModel::activityChanged (this=0x21db310) at /build/discover/src/discover-5.7.1/libdiscover/UpdateModel/UpdateModel.cpp:92
#30 0x00007f5cba9df85e in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#31 0x00007f5cbd2a9989 in ResourcesModel::resetBackend (this=this@entry=0x1eb2fd0, backend=backend@entry=0x2429190) at /build/discover/src/discover-5.7.1/libdiscover/resources/ResourcesModel.cpp:306
#32 0x00007f5cbd2ab40b in ResourcesModel::callerFetchingChanged (this=0x1eb2fd0) at /build/discover/src/discover-5.7.1/libdiscover/resources/ResourcesModel.cpp:284
#33 0x00007f5cba9df85e in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#34 0x00007f5c8d51af66 in KNSBackend::receivedEntries (this=0x2429190, entries=...) at /build/discover/src/discover-5.7.1/libdiscover/backends/KNSBackend/KNSBackend.cpp:124
#35 0x00007f5cba9df85e in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#36 0x00007f5c8d273832 in KNS3::DownloadManager::searchResult(QList<KNS3::Entry> const&) () from /usr/lib/libKF5NewStuff.so.5
#37 0x00007f5c8d274242 in ?? () from /usr/lib/libKF5NewStuff.so.5
#38 0x00007f5c8d2744ed in ?? () from /usr/lib/libKF5NewStuff.so.5
#39 0x00007f5cba9df4e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#40 0x00007f5c8d2e7c35 in ?? () from /usr/lib/libKF5NewStuff.so.5
#41 0x00007f5c8d27eeb8 in ?? () from /usr/lib/libKF5NewStuff.so.5
#42 0x00007f5c8d2e9fec in ?? () from /usr/lib/libKF5NewStuff.so.5
#43 0x00007f5cba9df4e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#44 0x00007f5c8d2e817a in ?? () from /usr/lib/libKF5NewStuff.so.5
#45 0x00007f5c8d2d756b in ?? () from /usr/lib/libKF5NewStuff.so.5
#46 0x00007f5cba9df85e in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#47 0x00007f5cb7f128af in Attica::BaseJob::finished(Attica::BaseJob*) () from /usr/lib/libKF5Attica.so.5
#48 0x00007f5cb7eb5ee3 in Attica::BaseJob::dataFinished() () from /usr/lib/libKF5Attica.so.5
#49 0x00007f5cb7f12b95 in ?? () from /usr/lib/libKF5Attica.so.5
#50 0x00007f5cba9df4e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#51 0x00007f5cb8ac8e97 in ?? () from /usr/lib/libQt5Network.so.5
#52 0x00007f5cb8b5fb59 in ?? () from /usr/lib/libQt5Network.so.5
#53 0x00007f5cba9e0349 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#54 0x00007f5cbb92ee3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#55 0x00007f5cbb9365b1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#56 0x00007f5cba9b3c80 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#57 0x00007f5cba9b63fd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#58 0x00007f5cbaa08173 in ?? () from /usr/lib/libQt5Core.so.5
#59 0x00007f5cb4ef0dd7 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#60 0x00007f5cb4ef1040 in ?? () from /usr/lib/libglib-2.0.so.0
#61 0x00007f5cb4ef10ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#62 0x00007f5cbaa0857f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#63 0x00007f5cba9b20da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#64 0x00007f5cba9ba5cc in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#65 0x00000000004098f5 in main (argc=<optimized out>, argv=<optimized out>) at /build/discover/src/discover-5.7.1/discover/main.cpp:144

Reported using DrKonqi
Comment 1 Kai Uwe Broulik 2016-07-15 08:34:49 UTC 
I just got the very same crash. KDE neon User Edition.
Comment 2 Aleix Pol 2016-07-21 10:30:43 UTC 
Should be fixed as of:
commit e7d7b5aaeb8aae9e5fc8dd2396470157ca081de5
Author: Aleix Pol <aleixpol@kde.org>
Date:   Wed Jul 13 15:16:07 2016 +0200

Can you confirm? The patch is in Plasma/5.7.