Bug 386786

Summary: Discover app crashes during search
Product: [Applications] Discover Reporter: Harley Faggetter <topperfalkon>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED FIXED    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.10.5   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Harley Faggetter 2017-11-12 19:00:56 UTC 
Application: plasma-discover (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.37.0
Operating System: Linux 4.12.12-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

I was searching for an application, and after searching for some time, the Discover application crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5a62f58e80 (LWP 3335))]

Thread 9 (Thread 0x7f5a17fff700 (LWP 3347)):
#0  0x00007f5a5e645cbb in poll () at /usr/lib/libc.so.6
#1  0x00007f5a58c6ec09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f5a2cedd700 (LWP 3346)):
#0  0x00007f5a5e64abb9 in syscall () at /usr/lib/libc.so.6
#1  0x00007f5a3ea6b495 in  () at /usr/lib/libGLX_nvidia.so.0
#2  0x00007f5a3ea6b193 in  () at /usr/lib/libGLX_nvidia.so.0
#3  0x00007f5a3daea2b3 in  () at /usr/lib/libnvidia-glcore.so.384.69
#4  0x00007f5a3daea386 in  () at /usr/lib/libnvidia-glcore.so.384.69
#5  0x00007f5a3da976f8 in  () at /usr/lib/libnvidia-glcore.so.384.69
#6  0x00007f5a3d9bcf8e in  () at /usr/lib/libnvidia-glcore.so.384.69
#7  0x00007f5a3ea69eae in  () at /usr/lib/libGLX_nvidia.so.0
#8  0x00007f5a4f417d35 in  () at /usr/lib/qt/plugins/xcbglintegrations/libqxcb-glx-integration.so
#9  0x00007f5a5fd5c06f in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/libQt5Gui.so.5
#10 0x00007f5a6227b0eb in  () at /usr/lib/libQt5Quick.so.5
#11 0x00007f5a62280210 in  () at /usr/lib/libQt5Quick.so.5
#12 0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f5a2f3a0700 (LWP 3342)):
#0  0x00007f5a58c6e0d0 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5a58c6eb3b in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f5a2ffff700 (LWP 3341)):
#0  0x00007f5a5e645cbb in poll () at /usr/lib/libc.so.6
#1  0x00007f5a58c6ec09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f5a36e3c700 (LWP 3340)):
#0  0x00007f5a5e645cbb in poll () at /usr/lib/libc.so.6
#1  0x00007f5a58c6ec09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a621fe96b in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f5a46526700 (LWP 3339)):
#0  0x00007f5a5e645cbb in poll () at /usr/lib/libc.so.6
#1  0x00007f5a58c6ec09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a5f9033d9 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f5a47737700 (LWP 3338)):
#0  0x00007f5a5e6417d8 in read () at /usr/lib/libc.so.6
#1  0x00007f5a58cb2730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5a58c6e6eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5a58c6ebb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f5a5ef82084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f5a5ed3f40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f5a610bd396 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5a5043b700 (LWP 3337)):
#0  0x00007f5a5e645cbb in poll () at /usr/lib/libc.so.6
#1  0x00007f5a58a078e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f5a58a09679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f5a52fd672a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f5a5ed4415b in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f5a5ae4b08a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f5a5e6501bf in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f5a62f58e80 (LWP 3335)):
[KCrash Handler]
#5  0x00007f5a5f82ec39 in QV4::QObjectWrapper::create(QV4::ExecutionEngine*, QObject*) () at /usr/lib/libQt5Qml.so.5
#6  0x00007f5a5f8308ea in QV4::QObjectWrapper::wrap_slowPath(QV4::ExecutionEngine*, QObject*) () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5a5f7b0034 in QV4::ExecutionEngine::fromVariant(QVariant const&) () at /usr/lib/libQt5Qml.so.5
#8  0x00007f5a5f834fde in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f5a5f835d81 in QV4::QObjectWrapper::getQmlProperty(QQmlContextData*, QV4::String*, QV4::QObjectWrapper::RevisionMode, bool*, bool) const () at /usr/lib/libQt5Qml.so.5
#10 0x00007f5a5f84d2a9 in QV4::Runtime::method_getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib/libQt5Qml.so.5
#11 0x00007f5a3c0555db in  ()
#12 0x0000000000000022 in  ()
#13 0x00007f5a62da48bc in update_get_addr () at /lib64/ld-linux-x86-64.so.2
#14 0x00007f5a62da9928 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#15 0x00007f5a5f7b994c in QV4::ExecutionContext::simpleCall(QV4::Scope&, QV4::CallData*, QV4::Function*) () at /usr/lib/libQt5Qml.so.5
#16 0x00007f5a5f8e2f82 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*, QV4::Scope&) () at /usr/lib/libQt5Qml.so.5
#17 0x00007f5a5f8ed4e7 in  () at /usr/lib/libQt5Qml.so.5
#18 0x00007f5a5f8ea2b3 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#19 0x00007f5a5f8f645c in  () at /usr/lib/libQt5Qml.so.5
#20 0x00007f5a5f8769b3 in  () at /usr/lib/libQt5Qml.so.5
#21 0x00007f5a5f876f9c in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/libQt5Qml.so.5
#22 0x00007f5a5f92abb8 in  () at /usr/lib/libQt5Qml.so.5
#23 0x00007f5a5f92ad03 in QQmlDelegateModel::object(int, bool) () at /usr/lib/libQt5Qml.so.5
#24 0x00007f5a623a511b in  () at /usr/lib/libQt5Quick.so.5
#25 0x00007f5a623b3a06 in  () at /usr/lib/libQt5Quick.so.5
#26 0x00007f5a623a3e4b in  () at /usr/lib/libQt5Quick.so.5
#27 0x00007f5a623a56d2 in  () at /usr/lib/libQt5Quick.so.5
#28 0x00007f5a622d2023 in QQuickWindowPrivate::polishItems() () at /usr/lib/libQt5Quick.so.5
#29 0x00007f5a6227c270 in  () at /usr/lib/libQt5Quick.so.5
#30 0x00007f5a6227d232 in  () at /usr/lib/libQt5Quick.so.5
#31 0x00007f5a622da996 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#32 0x00007f5a604e5e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007f5a604ed926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007f5a5ef27bd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#35 0x00007f5a5fd2d293 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/libQt5Gui.so.5
#36 0x00007f5a5fd2d7bb in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#37 0x00007f5a622da936 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#38 0x00007f5a604e5e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007f5a604ed926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f5a5ef27bd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#41 0x00007f5a5ef814a8 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#42 0x00007f5a5ef81cda in  () at /usr/lib/libQt5Core.so.5
#43 0x00007f5a58c6ea57 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#44 0x00007f5a58c6ec88 in  () at /usr/lib/libglib-2.0.so.0
#45 0x00007f5a58c6ed1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#46 0x00007f5a5ef82061 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#47 0x00007f5a5ef25ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#48 0x00007f5a5ef2f048 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#49 0x000056324bf8fecf in  ()
#50 0x00007f5a5e57af6a in __libc_start_main () at /usr/lib/libc.so.6
#51 0x000056324bf901fa in _start ()

Reported using DrKonqi
Comment 1 Aleix Pol 2018-01-29 16:02:15 UTC 
Does this still happen?
We have introduced fixes that should resolve this issue by 5.12, please test again.
Comment 2 Christoph Feck 2018-02-14 15:18:24 UTC 
No response; closing. If you have new information, please add a comment.