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:
- What I was doing when the application crashed: If I hovered over, or clicked on the settings at the bottom of the application, it crashed every time.

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 0x7f8c0b0faf40 (LWP 4009))]

Thread 11 (Thread 0x7f8bbdf7a700 (LWP 4022)):
#0  0x00007f8c010cf374 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8c010d18d3 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c010d236b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8c02ff76db in start_thread (arg=0x7f8bbdf7a700) at pthread_create.c:463
#9  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f8bbeb85700 (LWP 4021)):
#0  0x00007f8c02ffded9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8bbeb84c40, expected=0, futex_word=0x7f8bb8005174) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f8bbeb84d00, mutex=0x7f8bb8005120, cond=0x7f8bb8005148) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f8bb8005148, mutex=0x7f8bb8005120, abstime=0x7f8bbeb84d00) at pthread_cond_wait.c:667
#3  0x00007f8c06efb458 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c06ef752d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c02ff76db in start_thread (arg=0x7f8bbeb85700) at pthread_create.c:463
#7  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f8bbf386700 (LWP 4020)):
#0  0x00007f8c067e3bf9 in __GI___poll (fds=0x560aaed67660, nfds=1, timeout=118019) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8c010d2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8c02ff76db in start_thread (arg=0x7f8bbf386700) at pthread_create.c:463
#8  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8bc5b2b700 (LWP 4017)):
#0  0x00007f8c010d1e98 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8c010d23e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8c02ff76db in start_thread (arg=0x7f8bc5b2b700) at pthread_create.c:463
#8  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8bd92ab700 (LWP 4016)):
#0  0x00007f8c0af2b57a in _dl_update_slotinfo (req_modid=1) at ../elf/dl-tls.c:623
#1  0x00007f8c0af2b87c in update_get_addr (ti=0x7f8c075936a0) at ../elf/dl-tls.c:799
#2  0x00007f8c0af31a28 in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:55
#3  0x00007f8c06ef8ff6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c0713180a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c010d1998 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8c010d236b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8c0a2d42a6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8c02ff76db in start_thread (arg=0x7f8bd92ab700) at pthread_create.c:463
#14 0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8bdb0bf700 (LWP 4014)):
#0  0x00007f8c02ffd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560aab8e22f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x560aab8e22a0, cond=0x560aab8e22c8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x560aab8e22c8, mutex=0x560aab8e22a0) at pthread_cond_wait.c:655
#3  0x00007f8be4baab7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007f8be4baa8a7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007f8c02ff76db in start_thread (arg=0x7f8bdb0bf700) at pthread_create.c:463
#6  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8bdbee8700 (LWP 4013)):
#0  0x00007f8c02ffd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x560aab8df908) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x560aab8df8b8, cond=0x560aab8df8e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x560aab8df8e0, mutex=0x560aab8df8b8) at pthread_cond_wait.c:655
#3  0x00007f8be4baab7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007f8be4baa8a7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007f8c02ff76db in start_thread (arg=0x7f8bdbee8700) at pthread_create.c:463
#6  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8bee05c700 (LWP 4012)):
#0  0x00007f8c067e3bf9 in __GI___poll (fds=0x7f8be0004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8c010d2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c07b0b6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8c02ff76db in start_thread (arg=0x7f8bee05c700) at pthread_create.c:463
#9  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8bef26d700 (LWP 4011)):
#0  0x00007f8c067e3bf9 in __GI___poll (fds=0x7f8be8019160, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8c010d2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c0713190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c06ef522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c09296d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8c02ff76db in start_thread (arg=0x7f8bef26d700) at pthread_create.c:463
#9  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8bf87a0700 (LWP 4010)):
#0  0x00007f8c067e3bf9 in __GI___poll (fds=0x7f8bf879fca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8c00e69747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8c00e6b36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8bfb54d2a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8c06efa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c02ff76db in start_thread (arg=0x7f8bf87a0700) at pthread_create.c:463
#6  0x00007f8c067f088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8c0b0faf40 (LWP 4009)):
[KCrash Handler]
#6  0x00007f8c09f7ab19 in AbstractResourcesBackend::Filters::shouldFilter(AbstractResource*) const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f8c09f7aded in AbstractResourcesBackend::Filters::filterJustInCase(QVector<AbstractResource*>&) const () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007f8c09f72422 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007f8c071076cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8c09f8b3d2 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007f8c09f6a5e0 in AggregatedResultsStream::emitResults() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007f8c09f6a639 in AggregatedResultsStream::clear() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#13 0x00007f8c09f6b7b3 in AggregatedResultsStream::destruction(QObject*) () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0x00007f8c071076cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f8c07107d2f in QObject::destroyed(QObject*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8c0710e44a in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f8c09f7a6b9 in ResultsStream::~ResultsStream() () from /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#18 0x00007f8c07108140 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f8c086e582c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f8c086ed0f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f8c070d89a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f8c070db11d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f8c071322c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8c010d2287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f8c010d24c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8c010d254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8c071318ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f8c070d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f8c070dfa84 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x0000560aa9986f58 in ?? ()
#31 0x00007f8c066f0b97 in __libc_start_main (main=0x560aa9986680, argc=1, argv=0x7fff76f75498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff76f75488) at ../csu/libc-start.c:310
#32 0x0000560aa998713a in _start ()

Possible duplicates by query: bug 395551, bug 395270, bug 394722, bug 394642, bug 394370.

Reported using DrKonqi