Bug 381497

Application: plasma-discover (5.10.2)

Qt Version: 5.9.0
Frameworks Version: 5.35.0
Operating System: Linux 4.11.6-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Konsole and Chromium, but they didn't affect the applcation to crash
- Unusual behavior I noticed:
Nil
- Custom settings of the application:
Nil
-Output of Kdevelop
WARNING: Cannot find style "org.kde.desktop" - fallback: "/usr/lib/qt/qml/QtQuick/Controls/Styles/Desktop"
error loading "flatpak-backend" "Cannot load library /usr/lib/qt/plugins/discover/flatpak-backend.so: (libflatpak.so.0: cannot open shared object file: No such file or directory)" QJsonObject({"IID":"org.kde.muon.AbstractResourcesBackendFactory","MetaData":{},"className":"FlatpakBackendFactory","debug":false,"version":329984})
error loading "packagekit-backend" "Cannot load library /usr/lib/qt/plugins/discover/packagekit-backend.so: (libpackagekitqt5.so.0: cannot open shared object file: No such file or directory)" QJsonObject({"IID":"org.kde.muon.AbstractResourcesBackendFactory","MetaData":{},"className":"PackageKitBackendFactory","debug":false,"version":329984})
The file  "/home/ram/.local/share/knewstuff3/cgctheme.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/emoticons.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/discover_ktexteditor_codesnippets_core.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/lookandfeel.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/kwineffect.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/sddmtheme.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/kfontinst.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/icons.knsregistry"  could not be opened.
invalid kns backend! "/etc/xdg/ksysguard.knsrc" because: "Config group not found! Check your KNS3 installation."
The file  "/home/ram/.local/share/knewstuff3/xcursor.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/kwinswitcher.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/wallpaper.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/comic.knsregistry"  could not be opened.
*** Program received signal SIGSEGV (Segmentation fault) ***
The file  "/home/ram/.local/share/knewstuff3/kwinscripts.knsregistry"  could not be opened.
invalid kns backend! "/etc/xdg/servicemenu.knsrc" because: "Config group not found! Check your KNS3 installation."
The file  "/home/ram/.local/share/knewstuff3/colorschemes.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/plasma-themes.knsregistry"  could not be opened.
The file  "/home/ram/.local/share/knewstuff3/plasmoids.knsregistry"  could not be opened.

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 0x7f02697fa7c0 (LWP 708))]

Thread 12 (Thread 0x7f0256c2f700 (LWP 753)):
#0  0x00007f0264f833b9 in syscall () at /usr/lib/libc.so.6
#1  0x00007f02652d0087 in __cxxabiv1::__cxa_guard_acquire(__cxxabiv1::__guard*) (g=0x7f0263f3bc68) at /build/gcc/src/gcc/libstdc++-v3/libsupc++/guard.cc:302
#2  0x00007f0263c8fc0c in  () at /usr/lib/libQt5Network.so.5
#3  0x00007f0263c82ba3 in  () at /usr/lib/libQt5Network.so.5
#4  0x00007f0265670171 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f022f7fe700 (LWP 720)):
[KCrash Handler]
#5  0x00007f02696af8f8 in _dl_relocate_object () at /lib64/ld-linux-x86-64.so.2
#6  0x00007f02696b77a3 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#7  0x00007f0264fc1c94 in _dl_catch_error () at /usr/lib/libc.so.6
#8  0x00007f02696b70e9 in _dl_open () at /lib64/ld-linux-x86-64.so.2
#9  0x00007f025f928f26 in  () at /usr/lib/libdl.so.2
#10 0x00007f0264fc1c94 in _dl_catch_error () at /usr/lib/libc.so.6
#11 0x00007f025f9295f5 in  () at /usr/lib/libdl.so.2
#12 0x00007f025f928fb1 in dlopen () at /usr/lib/libdl.so.2
#13 0x00007f026584ab8c in  () at /usr/lib/libQt5Core.so.5
#14 0x00007f0265844848 in QLibrary::load() () at /usr/lib/libQt5Core.so.5
#15 0x00007f0263c8f620 in  () at /usr/lib/libQt5Network.so.5
#16 0x00007f0263c8fc19 in  () at /usr/lib/libQt5Network.so.5
#17 0x00007f0263c82ba3 in  () at /usr/lib/libQt5Network.so.5
#18 0x00007f0265670171 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#20 0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#21 0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f022ffff700 (LWP 719)):
#0  0x00007f025f65f0b8 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f025f65fb2b in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f02658a6e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f026566f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f0235047700 (LWP 718)):
#0  0x00007f0264f7e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f025f65fbf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f02658a6e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f026566f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f0237b90700 (LWP 717)):
#0  0x00007f0264f7e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f025f65fbf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f02658a6e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f026566f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0268b1a836 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f023879f700 (LWP 716)):
#0  0x00007f02617c239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f023eac9f2b in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#2  0x00007f023eac9da7 in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#3  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f0238fa0700 (LWP 715)):
#0  0x00007f02617c239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f023eac9f2b in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#2  0x00007f023eac9da7 in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#3  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f02397a1700 (LWP 714)):
#0  0x00007f02617c239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f023eac9f2b in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#2  0x00007f023eac9da7 in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#3  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f0239fa2700 (LWP 713)):
#0  0x00007f02617c239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f023eac9f2b in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#2  0x00007f023eac9da7 in  () at /usr/lib/xorg/modules/dri/swrast_dri.so
#3  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f024d07b700 (LWP 712)):
#0  0x00007f0264f7e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f025f65fbf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f02658a6e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f026566f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0266228645 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f024e28c700 (LWP 711)):
#0  0x00007f0264f7e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f025f65fbf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f02658a6e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f026566f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f02679cfd45 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f0265673cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f02617bc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0264f8825f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f02697fa7c0 (LWP 708)):
#0  0x00007f02617c239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f02656750eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f026566f722 in QThreadPoolPrivate::waitForDone(int) () at /usr/lib/libQt5Core.so.5
#3  0x00007f026566fbd1 in QThreadPool::waitForDone(int) () at /usr/lib/libQt5Core.so.5
#4  0x00007f0263c8084a in  () at /usr/lib/libQt5Network.so.5
#5  0x00007f0263c83363 in  () at /usr/lib/libQt5Network.so.5
#6  0x00007f0263c834e9 in  () at /usr/lib/libQt5Network.so.5
#7  0x00007f0264ed1298 in __run_exit_handlers () at /usr/lib/libc.so.6
#8  0x00007f0264ed12ea in  () at /usr/lib/libc.so.6
#9  0x00007f02597c828d in  () at /usr/lib/libQt5XcbQpa.so.5
#10 0x00007f026587de72 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#11 0x00007f0266e0946c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f0266e10cf4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f026584eb98 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#14 0x00007f026585102d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#15 0x00007f02658a6a63 in  () at /usr/lib/libQt5Core.so.5
#16 0x00007f025f65fa47 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#17 0x00007f025f65fc78 in  () at /usr/lib/libglib-2.0.so.0
#18 0x00007f025f65fd0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#19 0x00007f02658a6e7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007f026584d21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#21 0x00007f0265855a74 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#22 0x000000000040d328 in  ()
#23 0x00007f0264ebb43a in __libc_start_main () at /usr/lib/libc.so.6
#24 0x000000000040d64a in _start ()

Possible duplicates by query: bug 381059, bug 381019, bug 380498, bug 380496, bug 380458.

Reported using DrKonqi