Application: krunner (5.11.5)

Qt Version: 5.10.0
Frameworks Version: 5.41.0
Operating System: Linux 4.14.11-1-ARCH x86_64
Distribution: "Arch Linux"

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

I started multiple applications with the shortcut alt+space, the applications were discord, kile, dolphin and firefox, when I opened firefox krunner crashed. 

- Unusual behavior I noticed:

Playing music with the vlc media player lagged as well as playing music on youtube in firefox. 
there was a huge cpu usage from changing programms
yesterday the whole computer freezed and i had to force shutdown and restart it.

The crash can be reproduced sometimes.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa5ff7d6800 (LWP 3181))]

Thread 12 (Thread 0x7fa5c1ffb700 (LWP 3442)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fa5c27fc700 (LWP 3441)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fa5c2ffd700 (LWP 3440)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fa5c37fe700 (LWP 3439)):
[KCrash Handler]
#5  0x00007fa5ce5e7a23 in  () at /usr/lib/libsqlite3.so.0
#6  0x00007fa5ce5e802f in  () at /usr/lib/libsqlite3.so.0
#7  0x00007fa5ce5e2fe1 in  () at /usr/lib/libsqlite3.so.0
#8  0x00007fa5ce575d28 in  () at /usr/lib/libsqlite3.so.0
#9  0x00007fa5ce57cb4b in sqlite3BtreeMovetoUnpacked () at /usr/lib/libsqlite3.so.0
#10 0x00007fa5ce60798d in sqlite3VdbeExec () at /usr/lib/libsqlite3.so.0
#11 0x00007fa5ce60e3a0 in sqlite3_step () at /usr/lib/libsqlite3.so.0
#12 0x00007fa5ce86aa2e in  () at /usr/lib/qt/plugins/sqldrivers/libqsqlite.so
#13 0x00007fa5f656c4d3 in QSqlCachedResult::cacheNext() () at /usr/lib/libQt5Sql.so.5
#14 0x00007fa5f655727e in QSqlQuery::next() () at /usr/lib/libQt5Sql.so.5
#15 0x00007fa5cea7fad6 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#16 0x00007fa5cea878ca in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#17 0x00007fa5cea84f96 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#18 0x00007fa5dca558c0 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/libKF5Runner.so.5
#19 0x00007fa5dc834618 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007fa5dc833610 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007fa5dc832d45 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#22 0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#23 0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#24 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fa5c3fff700 (LWP 3438)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fa5c894e700 (LWP 3437)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fa5c914f700 (LWP 3436)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fa5c9950700 (LWP 3435)):
#0  0x00007fa5f8e4438d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fa5fb52b00c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fa5dc83042f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fa5dc835479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fa5dc8354d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fa5dc82f924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fa5dc832c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fa5df5ef700 (LWP 3239)):
#0  0x00007fa5f67faf87 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#1  0x00007fa5f67fcf69 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa5f67fcfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa5fb7726b4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa5fb71482b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa5fb52478e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa5fe136a19 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fa5e7256700 (LWP 3208)):
#0  0x00007fa5fae26f2b in poll () at /usr/lib/libc.so.6
#1  0x00007fa5f67fced3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa5f67fcfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fa5fb7726b4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fa5fb71482b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa5fb52478e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fa5fd098416 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fa5e9b4e700 (LWP 3200)):
#0  0x00007fa5fae26f2b in poll () at /usr/lib/libc.so.6
#1  0x00007fa5fa5088e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fa5fa50a679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fa5ec4e77aa in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fa5fb529b2d in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fa5f8e3e08a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fa5fae3142f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fa5ff7d6800 (LWP 3181)):
#0  0x00007fa5f67fcd44 in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007fa5f67fcfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#2  0x00007fa5fb7726b4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fa5ec56f282 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fa5fb71482b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fa5fb71db18 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#6  0x000055d14416f732 in  ()
#7  0x00007fa5fad5bf4a in __libc_start_main () at /usr/lib/libc.so.6
#8  0x000055d14416f7ba in _start ()

Reported using DrKonqi