Bug 390381

Application: plasma-discover (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.13.0-32-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:

I try searches like "Thunderbird" and "Firewall", and this is too much for the app. This happens every time: either it ceases to respond and must be terminated, or it crashes straight away.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f23cd4395c0 (LWP 2346))]

Thread 8 (Thread 0x7f2385e72700 (LWP 2398)):
#0  0x00007f23c354e5d4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f23c3508b69 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f23c3509110 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f23c53c87fc in start_thread (arg=0x7f2385e72700) at pthread_create.c:465
#9  0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f2395986700 (LWP 2368)):
#0  0x00007ffd167cbb62 in clock_gettime ()
#1  0x00007f23c8b6e996 in __GI___clock_gettime (clock_id=1, tp=0x7f2395985a80) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f23c9492db1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f23c94915e9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f23c9493bf5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c3508b71 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f23c3509110 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f23c53c87fc in start_thread (arg=0x7f2395986700) at pthread_create.c:465
#13 0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f2396ece700 (LWP 2366)):
#0  0x00007ffd167cbb62 in clock_gettime ()
#1  0x00007f23c8b6e996 in __GI___clock_gettime (clock_id=1, tp=0x7f2396ecda20) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f23c9492db1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f23c94915e9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f23c9491bc5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c949320e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f23c35086a8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f23c350909b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f23c53c87fc in start_thread (arg=0x7f2396ece700) at pthread_create.c:465
#14 0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f23a044e700 (LWP 2361)):
#0  0x00007ffd167cbb62 in clock_gettime ()
#1  0x00007f23c8b6e996 in __GI___clock_gettime (clock_id=1, tp=0x7f23a044d9b0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f23c9492db1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f23c94915e9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f23c9491bc5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c949320e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f23c35086a8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f23c350909b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f23cc6e2846 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f23c53c87fc in start_thread (arg=0x7f23a044e700) at pthread_create.c:465
#15 0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f23b08b2700 (LWP 2353)):
#0  0x00007f23c8b53951 in __GI___poll (fds=0x7f23a40029e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f23c3509169 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f23c9e63f45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f23c53c87fc in start_thread (arg=0x7f23b08b2700) at pthread_create.c:465
#9  0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f23b10b3700 (LWP 2352)):
#0  0x00007ffd167cbb62 in clock_gettime ()
#1  0x00007f23c8b6e996 in __GI___clock_gettime (clock_id=1, tp=0x7f23b10b29f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f23c9492db1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f23c94915e9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f23c9491bc5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c949320e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f23c35086a8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f23c350909b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f23c949349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f23c92583ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f23cb5e7e45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f23c53c87fc in start_thread (arg=0x7f23b10b3700) at pthread_create.c:465
#15 0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f23b9bf7700 (LWP 2349)):
#0  0x00007f23c8b53951 in __GI___poll (fds=0x7f23b9bf6bb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f23c32a2747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f23c32a453a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f23bc151f09 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f23c925d29d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f23c53c87fc in start_thread (arg=0x7f23b9bf7700) at pthread_create.c:465
#6  0x00007f23c8b5fb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f23cd4395c0 (LWP 2346)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f23c8a83f5d in __GI_abort () at abort.c:90
#8  0x00007f23c8ebd095 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#9  0x00007f23c8ebac86 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#10 0x00007f23c8ebacd1 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#11 0x00007f23c8ebaf69 in __cxa_rethrow () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#12 0x00007f23c94727f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f23c946b9ba in QObjectPrivate::addConnection(int, QObjectPrivate::Connection*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f23c946dba4 in QObjectPrivate::connectImpl(QObject const*, int, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f23c946deb2 in QObject::connectImpl(QObject const*, void**, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f2397577336 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#17 0x00007f23c946a452 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f23caa3946c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f23caa40d34 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f23c943ade8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f23c943d55d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f23c9493e53 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f23c3508fb7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f23c35091f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f23c350927c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f23c949347f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f23c9438e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f23c9441da4 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x0000555dd3b0cfa8 in ?? ()
#30 0x00007f23c8a6c1c1 in __libc_start_main (main=0x555dd3b0c6d0, argc=1, argv=0x7ffd1671d2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd1671d2b8) at ../csu/libc-start.c:308
#31 0x0000555dd3b0d22a in _start ()

Reported using DrKonqi