Bug 386671

Application: plasma-discover (5.8.8)

Qt Version: 5.7.1
Frameworks Version: 5.39.0
Operating System: Linux 4.10.0-38-generic x86_64
Distribution: KDE neon LTS User Edition 5.8

-- Information about the crash:
Und zwar ziemlich häufig...

The crash can be reproduced sometimes.

-- Backtrace:
Application: Entdecken (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe3812ef8c0 (LWP 8318))]

Thread 10 (Thread 0x7fe34517e700 (LWP 8332)):
#0  0x00007fe379495a94 in g_mutex_unlock (mutex=0x264d050) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gthread-posix.c:1347
#1  0x00007fe379450bf9 in g_main_context_query (context=context@entry=0x264d050, max_priority=2147483647, timeout=timeout@entry=0x7fe34517dd04, fds=fds@entry=0x7fe3400010c0, n_fds=n_fds@entry=2) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3589
#2  0x00007fe379451307 in g_main_context_iterate (context=0x264d050, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3822
#3  0x00007fe379451712 in g_main_loop_run (loop=0x264cfe0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4034
#4  0x00007fe346b569d6 in gdbus_shared_thread_func (user_data=0x264d020) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./gio/gdbusprivate.c:246
#5  0x00007fe379477bb5 in g_thread_proxy (data=0x2637cf0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gthread.c:780
#6  0x00007fe37b53f6ba in start_thread (arg=0x7fe34517e700) at pthread_create.c:333
#7  0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fe34597f700 (LWP 8331)):
#0  0x00007fe37dc0170d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe37945138c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fe3380008c0, timeout=<optimized out>, context=0x264c810) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4135
#2  0x00007fe37945138c in g_main_context_iterate (context=context@entry=0x264c810, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007fe37945149c in g_main_context_iteration (context=0x264c810, may_block=may_block@entry=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007fe3794514d9 in glib_worker_main (data=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:5672
#5  0x00007fe379477bb5 in g_thread_proxy (data=0x2637ca0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gthread.c:780
#6  0x00007fe37b53f6ba in start_thread (arg=0x7fe34597f700) at pthread_create.c:333
#7  0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fe354a50700 (LWP 8325)):
#0  0x00007fff701d9b0b in clock_gettime ()
#1  0x00007fe37dc1b836 in __GI___clock_gettime (clock_id=1, tp=0x7fe354a4fa60) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fe37e6af241 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe37e8283d9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe37e828945 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe37e829d0e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe37945091d in g_main_context_prepare (context=context@entry=0x7fe348000990, priority=priority@entry=0x7fe354a4fbc0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3442
#7  0x00007fe3794512bb in g_main_context_iterate (context=context@entry=0x7fe348000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3820
#8  0x00007fe37945149c in g_main_context_iteration (context=0x7fe348000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#9  0x00007fe37e82a75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe37e7d50ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe37e604f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe37e609b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fe37b53f6ba in start_thread (arg=0x7fe354a50700) at pthread_create.c:333
#14 0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fe35d162700 (LWP 8324)):
#0  0x00007fe379495a88 in g_mutex_lock (mutex=mutex@entry=0x7fe350000990) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gthread-posix.c:1336
#1  0x00007fe379450929 in g_main_context_prepare (context=context@entry=0x7fe350000990, priority=priority@entry=0x7fe35d161b50) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3444
#2  0x00007fe3794512bb in g_main_context_iterate (context=context@entry=0x7fe350000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3820
#3  0x00007fe37945149c in g_main_context_iteration (context=0x7fe350000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007fe37e82a75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe37e7d50ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe37e604f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe380bc7fc6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fe37e609b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe37b53f6ba in start_thread (arg=0x7fe35d162700) at pthread_create.c:333
#10 0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fe35df9b700 (LWP 8323)):
#0  0x00007fe37b545360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe35f9587f3 in  () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007fe35f958657 in  () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007fe37b53f6ba in start_thread (arg=0x7fe35df9b700) at pthread_create.c:333
#4  0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fe35e79c700 (LWP 8322)):
#0  0x00007fe37b545360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe35f9587f3 in  () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007fe35f958657 in  () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007fe37b53f6ba in start_thread (arg=0x7fe35e79c700) at pthread_create.c:333
#4  0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fe366524700 (LWP 8321)):
#0  0x00007fff701d9b0b in clock_gettime ()
#1  0x00007fe37dc1b836 in __GI___clock_gettime (clock_id=1, tp=0x7fe366523a40) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fe37e6af241 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe37e8283d9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe37e828945 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe37e829d0e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe37945091d in g_main_context_prepare (context=context@entry=0x7fe358000990, priority=priority@entry=0x7fe366523ba0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3442
#7  0x00007fe3794512bb in g_main_context_iterate (context=context@entry=0x7fe358000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3820
#8  0x00007fe37945149c in g_main_context_iteration (context=0x7fe358000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#9  0x00007fe37e82a75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe37e7d50ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe37e604f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe37ef7bbf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fe37e609b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fe37b53f6ba in start_thread (arg=0x7fe366524700) at pthread_create.c:333
#15 0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fe367735700 (LWP 8320)):
#0  0x00007fe37dbfd24d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe3794946f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fe367734ac0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fe3794946f0 in g_wakeup_acknowledge (wakeup=0x1f383b0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gwakeup.c:210
#3  0x00007fe379450e74 in g_main_context_check (context=context@entry=0x7fe360000990, max_priority=2147483647, fds=fds@entry=0x7fe360018a90, n_fds=n_fds@entry=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3632
#4  0x00007fe379451330 in g_main_context_iterate (context=context@entry=0x7fe360000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3837
#5  0x00007fe37945149c in g_main_context_iteration (context=0x7fe360000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#6  0x00007fe37e82a75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe37e7d50ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe37e604f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe381435735 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007fe37e609b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe37b53f6ba in start_thread (arg=0x7fe367735700) at pthread_create.c:333
#12 0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe36fd57700 (LWP 8319)):
#0  0x00007fe37dc0170d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe378fe6c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe378fe88d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe3722aed79 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe37e609b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe37b53f6ba in start_thread (arg=0x7fe36fd57700) at pthread_create.c:333
#6  0x00007fe37dc0d3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fe3812ef8c0 (LWP 8318)):
[KCrash Handler]
#6  0x00007fe3470535c4 in AppStream::Pool::load(QString*) () at /usr/lib/x86_64-linux-gnu/libAppStreamQt.so.2
#7  0x00007fe3474c13ae in PackageKitBackend::PackageKitBackend(QObject*) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#8  0x00007fe3474c7871 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#9  0x00007fe3808a0589 in DiscoverBackendsFactory::backendForFile(QString const&, QString const&) const () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007fe3808a0da0 in DiscoverBackendsFactory::backend(QString const&) const () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007fe3808a0f88 in DiscoverBackendsFactory::allBackends() const () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007fe380890d8a in ResourcesModel::registerAllBackends() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#13 0x00007fe3808a8545 in  () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0x00007fe37e802d99 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fe37f739ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fe37f7418c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fe37e7d70c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fe37e7d978b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fe37e82a333 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fe379451197 in g_main_context_dispatch (context=0x7fe3680016f0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3154
#21 0x00007fe379451197 in g_main_context_dispatch (context=context@entry=0x7fe3680016f0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3769
#22 0x00007fe3794513f0 in g_main_context_iterate (context=context@entry=0x7fe3680016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3840
#23 0x00007fe37945149c in g_main_context_iteration (context=0x7fe3680016f0, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#24 0x00007fe37e82a73f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe37e7d50ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fe37e7dd6cc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000000000040a2a5 in  ()
#28 0x00007fe37db26830 in __libc_start_main (main=0x409ba0, argc=3, argv=0x7fff70189208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff701891f8) at ../csu/libc-start.c:291
#29 0x000000000040a3e9 in _start ()

Reported using DrKonqi