Application: plasmashell (5.10.2)

Qt Version: 5.9.0
Frameworks Version: 5.35.0
Operating System: Linux 4.11.5-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Used the mouse wheel on the battery icon in system tray to change brightness of the laptop monitor

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5e58cc5d80 (LWP 1148))]

Thread 19 (Thread 0x7f5d49106700 (LWP 2397)):
#0  0x00007f5e4cf1ea29 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5e4ced960c in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9ba0 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f5e55b7e645 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7f5d4b3ff700 (LWP 2373)):
#0  0x00007f5e5231a02d in read () at /usr/lib/libc.so.6
#1  0x00007f5e46635f51 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f5e46cc630e in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007f5e46cc6d80 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f5e46cc6e40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f5e46cd4e29 in  () at /usr/lib/libpulse.so.0
#6  0x00007f5e46664fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f5d60afe700 (LWP 2372)):
#0  0x00007f5e4ced911c in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5e4ced9b2b in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e55b7e645 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f5d61ffb700 (LWP 1879)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f5d627fc700 (LWP 1878)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f5d62ffd700 (LWP 1877)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f5d637fe700 (LWP 1876)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f5d63fff700 (LWP 1875)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#17 0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#18 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f5d70f9d700 (LWP 1874)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f5d7179e700 (LWP 1873)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f5d71f9f700 (LWP 1872)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e52a150eb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5d97bde3cd in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f5d97be32b8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007f5d97be3312 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007f5d97bdd913 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007f5d97be0b6b in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#20 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f5d8bf74700 (LWP 1688)):
#0  0x00007f5e5231e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f5e4ced9bf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5d8e918427 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f5d9f509700 (LWP 1674)):
#0  0x00007f5e4cf1ea29 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5e4ced9b00 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e56736836 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f5e2dd01700 (LWP 1654)):
#0  0x00007f5e51be239d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5e58451ac4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f5e58451b09 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f5e38928700 (LWP 1409)):
#0  0x00007f5e4ced910c in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5e4ced9b2b in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e55b7e645 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f5e3afbf700 (LWP 1332)):
#0  0x00007f5e5231e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f5e4ced9bf9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e55b7e645 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f5e40a48700 (LWP 1246)):
#0  0x00007f5e4cf1ea44 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f5e4ced9128 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f5e4ced9b2b in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f5e52c46e9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f5e52a0f40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f5e5306dd45 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f5e42adc700 (LWP 1207)):
#0  0x00007f5e5231e2bd in poll () at /usr/lib/libc.so.6
#1  0x00007f5e5735f8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f5e57361679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f5e4504dd49 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f5e52a13cbd in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f5e51bdc297 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f5e5232825f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f5e58cc5d80 (LWP 1148)):
[KCrash Handler]
#5  0x00007f5e55b64ff1 in QQmlBinding::getPropertyData(QQmlPropertyData**, QQmlPropertyData*) const () at /usr/lib/libQt5Qml.so.5
#6  0x00007f5e55b682cc in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5e55b68dae in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f5e55b65b93 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#9  0x00007f5e55b3ca83 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#10 0x00007f5e55adb499 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#11 0x00007f5e52c1cc9f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#12 0x00007f5d95471593 in  () at /usr/lib/qt/qml/org/kde/plasma/private/volume/libplasma-volume-declarative.so
#13 0x00007f5d954667ee in  () at /usr/lib/qt/qml/org/kde/plasma/private/volume/libplasma-volume-declarative.so
#14 0x00007f5e46cbcd8c in  () at /usr/lib/libpulse.so.0
#15 0x00007f5e4664eba1 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#16 0x00007f5e4664ef2b in pa_pdispatch_run () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#17 0x00007f5e46cb1a6e in  () at /usr/lib/libpulse.so.0
#18 0x00007f5e46651997 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#19 0x00007f5e466545eb in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#20 0x00007f5e46a9de4a in  () at /usr/lib/libpulse-mainloop-glib.so.0
#21 0x00007f5e4ced9a47 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#22 0x00007f5e4ced9c78 in  () at /usr/lib/libglib-2.0.so.0
#23 0x00007f5e4ced9d0c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#24 0x00007f5e52c46e7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#25 0x00007f5e52bed21a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#26 0x00007f5e52bf5a74 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#27 0x000000000041cc32 in  ()
#28 0x00007f5e5225b43a in __libc_start_main () at /usr/lib/libc.so.6
#29 0x000000000041cfaa in _start ()

Reported using DrKonqi