Bug 380498

Application: plasma-discover (5.10.0)

Qt Version: 5.8.0
Frameworks Version: 5.34.0
Operating System: Linux 4.11.3-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed: After 5.10 Plasma update, just opening discover crashes the application.

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 0x7f3c4cee4800 (LWP 1205))]

Thread 5 (Thread 0x7f3c24bf1700 (LWP 1209)):
#0  0x00007f3c42f291e0 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f3c42ee31b9 in g_main_context_query () at /usr/lib/libglib-2.0.so.0
#2  0x00007f3c42ee3928 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3c42ee3acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f3c48fd2f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3c48f7a3aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f3c48d9244a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f3c4c233fd6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f3c48d96e9c in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f3c44eec297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f3c486a925f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f3c2dddd700 (LWP 1208)):
#0  0x00007f3c4869f2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f3c42ee39b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f3c42ee3acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3c48fd2f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f3c48f7a3aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3c48d9244a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f3c4994a085 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f3c48d96e9c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f3c44eec297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f3c486a925f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f3c2efee700 (LWP 1207)):
#0  0x00007f3c4869f2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f3c42ee39b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f3c42ee3acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f3c48fd2f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f3c48f7a3aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f3c48d9244a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f3c4b0eec45 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f3c48d96e9c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f3c44eec297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f3c486a925f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f3c379f2700 (LWP 1206)):
#0  0x00007f3c4869f2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f3c42c7c8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f3c42c7e679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f3c3a5891d9 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f3c48d96e9c in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f3c44eec297 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f3c486a925f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f3c4cee4800 (LWP 1205)):
[KCrash Handler]
#6  0x00007f3c4cdbe10d in do_lookup_x () at /lib64/ld-linux-x86-64.so.2
#7  0x00007f3c4cdbecbf in _dl_lookup_symbol_x () at /lib64/ld-linux-x86-64.so.2
#8  0x00007f3c4cdc0769 in _dl_relocate_object () at /lib64/ld-linux-x86-64.so.2
#9  0x00007f3c4cdc85e3 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#10 0x00007f3c486e2c94 in _dl_catch_error () at /usr/lib/libc.so.6
#11 0x00007f3c4cdc7f29 in _dl_open () at /lib64/ld-linux-x86-64.so.2
#12 0x00007f3c4361ef26 in  () at /usr/lib/libdl.so.2
#13 0x00007f3c486e2c94 in _dl_catch_error () at /usr/lib/libc.so.6
#14 0x00007f3c4361f5f5 in  () at /usr/lib/libdl.so.2
#15 0x00007f3c4361efb1 in dlopen () at /usr/lib/libdl.so.2
#16 0x00007f3c48f77d01 in  () at /usr/lib/libQt5Core.so.5
#17 0x00007f3c48f71165 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007f3c48f5f2a8 in QPluginLoader::instance() () at /usr/lib/libQt5Core.so.5
#19 0x00007f3c4bee446f in DiscoverBackendsFactory::backendForFile(QString const&, QString const&) const () at /usr/lib/plasma-discover/libDiscoverCommon.so
#20 0x00007f3c4bee4b4b in DiscoverBackendsFactory::backend(QString const&) const () at /usr/lib/plasma-discover/libDiscoverCommon.so
#21 0x00007f3c4bee4cc4 in DiscoverBackendsFactory::allBackends() const () at /usr/lib/plasma-discover/libDiscoverCommon.so
#22 0x00007f3c4bed094a in ResourcesModel::registerAllBackends() () at /usr/lib/plasma-discover/libDiscoverCommon.so
#23 0x00007f3c48faa332 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#24 0x00007f3c4a523d7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007f3c4a52b494 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f3c48f7bd38 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#27 0x00007f3c48f7defd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#28 0x00007f3c48fd2af3 in  () at /usr/lib/libQt5Core.so.5
#29 0x00007f3c42ee37b7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#30 0x00007f3c42ee3a20 in  () at /usr/lib/libglib-2.0.so.0
#31 0x00007f3c42ee3acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#32 0x00007f3c48fd2f0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#33 0x00007f3c48f7a3aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#34 0x00007f3c48f82744 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#35 0x000000000040d2b8 in  ()
#36 0x00007f3c485dc43a in __libc_start_main () at /usr/lib/libc.so.6
#37 0x000000000040d58a in _start ()

Possible duplicates by query: bug 380496.

Reported using DrKonqi