Bug 389995

Summary: Discover crashed after I tried to open a screenshot of a theme from the Plasma Add-Ons section
Product: [Applications] Discover Reporter: norton <norton.miller>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED NOT A BUG    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.11.0   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description norton 2018-02-07 08:47:17 UTC 
Application: plasma-discover (5.11.0)

Qt Version: 5.9.3
Frameworks Version: 5.42.0
Operating System: Linux 4.13.0-32-generic x86_64
Distribution: KDE neon User Edition 5.12

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

Browsing themes in Plasma Add-Ons in Discover.
I opened Discover, selected Plasma Add-Ons, selected GTK-3 themes. In the list of themes I selected a theme then tried to view a screenshot by clicking the thumbnail image - Discover crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa3569958c0 (LWP 5591))]

Thread 12 (Thread 0x7fa2ffcff700 (LWP 5620)):
#0  0x00007fa34cb514bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa34cb53d42 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb54330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa34e9dd6ba in start_thread (arg=0x7fa2ffcff700) at pthread_create.c:333
#9  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa310a8f700 (LWP 5614)):
#0  0x00007fa351e2a74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa34cb5438c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa34e9dd6ba in start_thread (arg=0x7fa310a8f700) at pthread_create.c:333
#8  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa312df1700 (LWP 5602)):
#0  0x00007fa35282f592 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa352a5a5ba in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa34cb5391d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb542bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa34e9dd6ba in start_thread (arg=0x7fa312df1700) at pthread_create.c:333
#10 0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa3137fe700 (LWP 5600)):
#0  0x00007fa351e2a74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa34cb5438c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb54712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa3195629d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa34cb7abb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa34e9dd6ba in start_thread (arg=0x7fa3137fe700) at pthread_create.c:333
#6  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa313fff700 (LWP 5599)):
#0  0x00007fa351e2a74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa34cb5438c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb544d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa34cb7abb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa34e9dd6ba in start_thread (arg=0x7fa313fff700) at pthread_create.c:333
#6  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa31b715700 (LWP 5597)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa35283165b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa35282a3cb in QSemaphore::acquire(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa352a314b6 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa350af1368 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007fa350baec7d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007fa352a31279 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa350ab8b3b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007fa350ab931d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007fa352a31279 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa350b9b347 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007fa350b9f43b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007fa350b9fe66 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007fa350b8ac31 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007fa352a31279 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fa350b58453 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007fa350b5850c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007fa350b690d1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#18 0x00007fa353ff2b9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fa353ffa5a7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fa352a04df8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fa352a5b32d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa34cb54197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fa34cb543f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fa34e9dd6ba in start_thread (arg=0x7fa31b715700) at pthread_create.c:333
#30 0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa320c7f700 (LWP 5596)):
#0  0x00007fa351e2627d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa34cb976f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb53e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb54330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa34e9dd6ba in start_thread (arg=0x7fa320c7f700) at pthread_create.c:333
#10 0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa32989d700 (LWP 5595)):
#0  0x00007fa34cb53e68 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa34cb54330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa355cc1046 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa34e9dd6ba in start_thread (arg=0x7fa32989d700) at pthread_create.c:333
#9  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa33975a700 (LWP 5594)):
#0  0x00007fa34cb98a94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa34cb53d4a in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb54330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa35342cd25 in QQmlThreadPrivate::run (this=0x196e0a0) at qml/ftw/qqmlthread.cpp:147
#8  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa34e9dd6ba in start_thread (arg=0x7fa33975a700) at pthread_create.c:333
#10 0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa33a96b700 (LWP 5593)):
#0  0x00007fa34cb98a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa34cb53dcc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa34cb54330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa34cb5449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa352a5a6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa352a02e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa35282b8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa354bb9315 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa34e9dd6ba in start_thread (arg=0x7fa33a96b700) at pthread_create.c:333
#10 0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa34388e700 (LWP 5592)):
#0  0x00007fa351e2a74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa34c8f1c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa34c8f38d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa345de51f9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa352830709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa34e9dd6ba in start_thread (arg=0x7fa34388e700) at pthread_create.c:333
#6  0x00007fa351e3641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa3569958c0 (LWP 5591)):
[KCrash Handler]
#6  0x00007fa3532ea1be in QQmlData::wasDeleted (object=0x7da1930) at ../../include/QtQml/5.9.3/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h:302
#7  QV4::QObjectWrapper::wrap (engine=engine@entry=0x19614b0, object=0x7da1930) at jsruntime/qv4qobjectwrapper_p.h:209
#8  0x00007fa3532e1f54 in QV4::ExecutionEngine::fromVariant (this=this@entry=0x19614b0, variant=...) at jsruntime/qv4engine.cpp:1363
#9  0x00007fa3533627c9 in loadProperty (v4=0x19614b0, object=0x81e7490, property=...) at jsruntime/qv4qobjectwrapper.cpp:193
#10 0x00007fa353363786 in QV4::QObjectWrapper::getQmlProperty (this=0x7fa33835b3e8, qmlContext=0x82060d0, name=0x7fa33835b3e0, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:279
#11 0x00007fa35337a1d7 in QV4::Object::get (hasProperty=0x0, name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:344
#12 QV4::Runtime::method_getProperty (engine=0x19614b0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:769
#13 0x00007fa32801de4b in ?? ()
#14 0x0000000000000000 in ?? ()

Reported using DrKonqi
Comment 1 Aleix Pol 2018-02-12 17:36:20 UTC 
Please make sure your installation is alright. Neon shouldn't have 5.11.0 at his point.