Application: plasmashell (5.3.2) Qt Version: 5.4.2 Operating System: Linux 4.1.0-2-generic x86_64 Distribution: Ubuntu Wily Werewolf (development branch) -- Information about the crash: - What I was doing when the application crashed: Just logged in and plasma crashes together with kded5 and kdeinit5. - Custom settings of the application: I am running a custom window manager by setting KDEWM="i3". The crash can be reproduced every time. -- Backtrace: Application: Plasma (plasmashell), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f7e37e9b800 (LWP 2694))] Thread 4 (Thread 0x7f7e23db4700 (LWP 2699)): #0 0x00007f7e32a2b8dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f7e36aeebd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f7e36af074f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f7e261030f9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #4 0x00007f7e330aec6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f7e320036aa in start_thread (arg=0x7f7e23db4700) at pthread_create.c:333 #6 0x00007f7e32a36eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f7e21a95700 (LWP 2702)): #0 0x00007f7e2f5ecbd9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f7e2f5a76a7 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f7e2f5a81b8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f7e2f5a839c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f7e333462dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f7e332eaaa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f7e330a9ca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f7e35993ac5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f7e330aec6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f7e320036aa in start_thread (arg=0x7f7e21a95700) at pthread_create.c:333 #10 0x00007f7e32a36eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f7e0fd87700 (LWP 2715)): #0 0x00007f7e2f5a76a2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f7e2f5a81b8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f7e2f5a839c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f7e333462dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f7e332eaaa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f7e330a9ca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f7e35993ac5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f7e330aec6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f7e320036aa in start_thread (arg=0x7f7e0fd87700) at pthread_create.c:333 #9 0x00007f7e32a36eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f7e37e9b800 (LWP 2694)): [KCrash Handler] #6 QString (other=..., this=0x7ffea8326950) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:811 #7 result (this=0x2395d70) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuture.h:164 #8 result (this=0x2395d60) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuturewatcher.h:122 #9 operator() (__closure=<optimized out>) at ../../../../src/utils/dbusfuture_p.h:169 #10 call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:494 #11 call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:551 #12 QtPrivate::QFunctorSlotObject<DBusFuture::continueWith(const QFuture<T>&, _Continuation&&) [with _ReturnType = QString; _Continuation = KActivities::Manager::serviceOwnerChanged(const QString&, const QString&, const QString&)::<lambda(const QString&)>]::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:192 #13 0x00007f7e3331edca in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #14 0x00007f7e330a61e2 in QFutureWatcherBase::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #15 0x00007f7e33e09adc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #16 0x00007f7e33e0efb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17 0x00007f7e332ed2eb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007f7e332ef35b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #19 0x00007f7e33345eb3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #20 0x00007f7e2f5a800d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007f7e2f5a82f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007f7e2f5a839c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #23 0x00007f7e333462c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007f7e332eaaa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #25 0x00007f7e332f26ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #26 0x0000000000430a43 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:154 Possible duplicates by query: bug 349420, bug 349012, bug 348820, bug 348091, bug 348020. Reported using DrKonqi
At the same time, kded5 crashes with backtrace: Application: kded5 (kded5), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7fd7bb64e780 (LWP 2744))] Thread 5 (Thread 0x7fd78ee46700 (LWP 2784)): #0 0x00007fd7bb00a8dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fd7b882428c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fd7b882439c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd7b88243d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fd7b884adc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fd7b8d446aa in start_thread (arg=0x7fd78ee46700) at pthread_create.c:333 #6 0x00007fd7bb015eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7fd78e645700 (LWP 2785)): #0 0x00007fd7b8823732 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007fd7b88241b8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fd7b8824612 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd78f34e9c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007fd7b884adc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fd7b8d446aa in start_thread (arg=0x7fd78e645700) at pthread_create.c:333 #6 0x00007fd7bb015eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7fd78dc36700 (LWP 2786)): #0 0x00007fd7b8868bf4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007fd7b88237c0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fd7b88241b8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd7b882439c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fd7b95a72dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007fd7b954baa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007fd7b930aca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007fd79771dcf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so #8 0x00007fd7b930fc6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007fd7b8d446aa in start_thread (arg=0x7fd78dc36700) at pthread_create.c:333 #10 0x00007fd7bb015eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7fd78d435700 (LWP 2787)): #0 0x00007fd7b9307f6f in QMutex::unlock() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x00007fd7b95a685d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007fd7b88237cd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd7b88241b8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fd7b882439c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fd7b95a72dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007fd7b954baa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007fd7b930aca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007fd7b930fc6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007fd7b8d446aa in start_thread (arg=0x7fd78d435700) at pthread_create.c:333 #10 0x00007fd7bb015eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7fd7bb64e780 (LWP 2744)): [KCrash Handler] #6 QString (other=..., this=0x7ffd93a7e740) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:811 #7 result (this=0x128a240) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuture.h:164 #8 result (this=0x128a230) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuturewatcher.h:122 #9 operator() (__closure=<optimized out>) at ../../../../src/utils/dbusfuture_p.h:169 #10 call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:494 #11 call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:551 #12 QtPrivate::QFunctorSlotObject<DBusFuture::continueWith(const QFuture<T>&, _Continuation&&) [with _ReturnType = QString; _Continuation = KActivities::Manager::serviceOwnerChanged(const QString&, const QString&, const QString&)::<lambda(const QString&)>]::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:192 #13 0x00007fd7b957fdca in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #14 0x00007fd7b93071e2 in QFutureWatcherBase::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #15 0x00007fd7ba9c3adc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #16 0x00007fd7ba9c8fb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17 0x00007fd7b954e2eb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007fd7b955035b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #19 0x00007fd7b95a6eb3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #20 0x00007fd7b882400d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007fd7b88242f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007fd7b882439c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #23 0x00007fd7b95a72c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007fd7b954baa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #25 0x00007fd7945d8b7b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kauth/backend/kauth_backend_plugin.so #26 0x00007fd7ac63575e in KAuth::Action::setName(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5Auth.so.5 #27 0x00007fd7ac6357c9 in KAuth::Action::Action(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5Auth.so.5 #28 0x00007fd7a1823551 in PowerDevilUPowerBackend::init() () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kded_powerdevil.so #29 0x00007fd7a15dac74 in PowerDevil::Core::loadCore(PowerDevil::BackendInterface*) () from /usr/lib/x86_64-linux-gnu/libpowerdevilcore.so.2 #30 0x00007fd7a181818b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kded_powerdevil.so #31 0x00007fd7b957fdca in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #32 0x00007fd7ba9c3adc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #33 0x00007fd7ba9c8fb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #34 0x00007fd7b954e2eb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #35 0x00007fd7b955035b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #36 0x00007fd7b95a6eb3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #37 0x00007fd7b882400d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #38 0x00007fd7b88242f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #39 0x00007fd7b882439c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #40 0x00007fd7b95a72c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #41 0x00007fd7b954baa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #42 0x00007fd7b95536ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #43 0x00007fd7bb2e6321 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kded5.so #44 0x00007fd7baf2fa40 in __libc_start_main (main=0x400720 <main>, argc=1, argv=0x7ffd93a7f888, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd93a7f878) at libc-start.c:289 #45 0x0000000000400759 in _start ()
And kdeinit5 crashes with backtrace: Application: kdeinit5 (kdeinit5), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f2ee6863780 (LWP 2629))] Thread 6 (Thread 0x7f2ed2f43700 (LWP 2631)): #0 0x00007f2ee4f578dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f2ee3442bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f2ee344474f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f2ed57340f9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #4 0x00007f2ee52c9c6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f2ee2b936aa in start_thread (arg=0x7f2ed2f43700) at pthread_create.c:333 #6 0x00007f2ee4f62eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7f2ec63cb700 (LWP 2665)): #0 __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98 #1 0x00007f2ee4f578e9 in poll () at ../sysdeps/unix/syscall-template.S:81 #2 0x00007f2ee213728c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f2ee213739c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f2ee21373d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f2ee215ddc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #6 0x00007f2ee2b936aa in start_thread (arg=0x7f2ec63cb700) at pthread_create.c:333 #7 0x00007f2ee4f62eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7f2ec5bca700 (LWP 2666)): #0 0x00007f2ee4f5349d in read () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f2ee217a740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f2ee2136d3c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f2ee2137230 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f2ee2137612 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f2ec68d39c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #6 0x00007f2ee215ddc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #7 0x00007f2ee2b936aa in start_thread (arg=0x7f2ec5bca700) at pthread_create.c:333 #8 0x00007f2ee4f62eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f2ec51bb700 (LWP 2667)): #0 0x00007f2ee217bbf4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f2ee2136dfa in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f2ee21372f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f2ee213739c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f2ee55612dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f2ee5505aa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f2ee52c4ca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f2eca886cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so #8 0x00007f2ee52c9c6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f2ee2b936aa in start_thread (arg=0x7f2ec51bb700) at pthread_create.c:333 #10 0x00007f2ee4f62eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f2ec49ba700 (LWP 2668)): #0 0x00007f2ee217bbd9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f2ee2136a11 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f2ee2137207 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f2ee213739c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f2ee55612dc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f2ee5505aa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f2ee52c4ca4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f2ee52c9c6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f2ee2b936aa in start_thread (arg=0x7f2ec49ba700) at pthread_create.c:333 #9 0x00007f2ee4f62eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f2ee6863780 (LWP 2629)): [KCrash Handler] #6 QString (other=..., this=0x7ffdcd6310b0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:811 #7 result (this=0x268a5e0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuture.h:164 #8 result (this=0x268a5d0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuturewatcher.h:122 #9 operator() (__closure=<optimized out>) at ../../../../src/utils/dbusfuture_p.h:169 #10 call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:494 #11 call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:551 #12 QtPrivate::QFunctorSlotObject<DBusFuture::continueWith(const QFuture<T>&, _Continuation&&) [with _ReturnType = QString; _Continuation = KActivities::Manager::serviceOwnerChanged(const QString&, const QString&, const QString&)::<lambda(const QString&)>]::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:192 #13 0x00007f2ee5539dca in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #14 0x00007f2ee52c11e2 in QFutureWatcherBase::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #15 0x00007f2ee39bbadc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #16 0x00007f2ee39c0fb0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17 0x00007f2ee55082eb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007f2ee550a35b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #19 0x00007f2ee5560eb3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #20 0x00007f2ee213700d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007f2ee21372f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007f2ee213739c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #23 0x00007f2ee55612c7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007f2ee5505aa2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #25 0x00007f2ee550d6ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #26 0x00007f2ed5470321 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kded5.so #27 0x0000000000408746 in ?? () #28 0x00000000004058e9 in main ()
If this many apps are crashing, it is an issue in Qt or, more likely, your distro.