Application: plasma-discover (5.12.4) Qt Version: 5.9.5 Frameworks Version: 5.44.0 Operating System: Linux 4.15.0-20-generic x86_64 Distribution: Ubuntu 18.04 LTS -- Information about the crash: The app automatically crashed soon after it was opened. Same happened multiple times. I opened the app, clicked on check updates and it 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 0x7f644c1ecf40 (LWP 1638))] Thread 8 (Thread 0x7f64055e2700 (LWP 1647)): #0 0x00007f6442206cf4 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f64421c0c39 in g_main_context_query () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f64421c13b7 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f64440e66db in start_thread (arg=0x7f64055e2700) at pthread_create.c:463 #9 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f64152bd700 (LWP 1644)): #0 0x00007f64478ce0b4 in __GI___libc_read (fd=17, buf=0x7f64152bcb90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27 #1 0x00007f6442205960 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f64421c0f27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f64421c13e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f64440e66db in start_thread (arg=0x7f64152bd700) at pthread_create.c:463 #10 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f641683e700 (LWP 1643)): #0 0x00007f644821f12c in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x00007f644822067e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007f64421c0998 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f64421c136b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f64440e66db in start_thread (arg=0x7f641683e700) at pthread_create.c:463 #10 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f641fdf6700 (LWP 1642)): #0 0x00007f64478ce0b4 in __GI___libc_read (fd=13, buf=0x7f641fdf5b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27 #1 0x00007f6442205960 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f64421c0f27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f64421c13e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f644b3c32a6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 #9 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #10 0x00007f64440e66db in start_thread (arg=0x7f641fdf6700) at pthread_create.c:463 #11 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f642f153700 (LWP 1641)): #0 0x00007f64478d2bf9 in __GI___poll (fds=0x7f6420004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f64421c1439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f6448bfa6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f64440e66db in start_thread (arg=0x7f642f153700) at pthread_create.c:463 #9 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f6430364700 (LWP 1640)): #0 0x00007f64478ce0b4 in __GI___libc_read (fd=7, buf=0x7f6430363b60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27 #1 0x00007f6442205960 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f64421c0f27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f64421c13e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f644822090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f6447fe422a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f644a385d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #9 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #10 0x00007f64440e66db in start_thread (arg=0x7f6430364700) at pthread_create.c:463 #11 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f643988f700 (LWP 1639)): #0 0x00007f64478d2bf9 in __GI___poll (fds=0x7f643988eca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f6441f58747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f6441f5a36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f643c63c2a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f6447fe916d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f64440e66db in start_thread (arg=0x7f643988f700) at pthread_create.c:463 #6 0x00007f64478df88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f644c1ecf40 (LWP 1638)): [KCrash Handler] #6 0x0000000000000000 in ?? () #7 0x00007f644b069b1f in AbstractResourcesBackend::Filters::shouldFilter(AbstractResource*) const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #8 0x00007f644b069ded in AbstractResourcesBackend::Filters::filterJustInCase(QVector<AbstractResource*>&) const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #9 0x00007f644b061422 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #10 0x00007f64481f66cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #11 0x00007f644b07a3d2 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #12 0x00007f644b0595e0 in AggregatedResultsStream::emitResults() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #13 0x00007f644b059639 in AggregatedResultsStream::clear() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #14 0x00007f644b05a7b3 in AggregatedResultsStream::destruction(QObject*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #15 0x00007f64481f66cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #16 0x00007f64481f6d2f in QObject::destroyed(QObject*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #17 0x00007f64481fd44a in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007f644b0696b9 in ResultsStream::~ResultsStream() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so #19 0x00007f64481f7140 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #20 0x00007f64497d482c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #21 0x00007f64497dc0f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #22 0x00007f64481c79a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x00007f64481ca11d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007f64482212c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #25 0x00007f64421c1287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #26 0x00007f64421c14c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #27 0x00007f64421c154c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #28 0x00007f64482208ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #29 0x00007f64481c59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #30 0x00007f64481cea84 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #31 0x0000555b9d91af58 in ?? () #32 0x00007f64477dfb97 in __libc_start_main (main=0x555b9d91a680, argc=1, argv=0x7fff946df9c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff946df9b8) at ../csu/libc-start.c:310 #33 0x0000555b9d91b13a in _start () Possible duplicates by query: bug 395588, bug 395551, bug 395270, bug 394722, bug 394642. Reported using DrKonqi
Git commit 11a05813b6e558f52459f98a4d1d15280c9ee842 by Aleix Pol. Committed on 29/06/2018 at 15:57. Pushed by apol into branch 'Plasma/5.12'. KNS: don't start searches before initializing This way we won't offer resources that will be invalidated if the kns turns out to be broken. M +37 -13 libdiscover/backends/KNSBackend/KNSBackend.cpp M +2 -1 libdiscover/backends/KNSBackend/KNSBackend.h https://commits.kde.org/discover/11a05813b6e558f52459f98a4d1d15280c9ee842
*** Bug 404548 has been marked as a duplicate of this bug. ***