Application: okular (1.4.1)

Qt Version: 5.11.0
Frameworks Version: 5.46.0
Operating System: Linux 4.16.11-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Okular seems to crash randomly even while I am not using it but I just have some okular documents (low number, up to 5 documents) in background. The crashes are rare, and I am not able to reproduce them.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Okular (okular), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdf54d5de80 (LWP 11849))]

Thread 3 (Thread 0x7fdf366be700 (LWP 11852)):
#0  0x00007fdf50a6fea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fdf4b43a523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdf4b43a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdf5138be64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fdf5133785c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fdf51180ac9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fdf517db976 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fdf5118ab95 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fdf4da0b075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fdf50a7a53f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fdf42db0700 (LWP 11850)):
#0  0x00007fdf50a6fea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fdf4de31180 in  () at /usr/lib/libxcb.so.1
#2  0x00007fdf4de32e4b in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fdf45b5ef1a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fdf5118ab95 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fdf4da0b075 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fdf50a7a53f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fdf54d5de80 (LWP 11849)):
[KCrash Handler]
#6  0x00007fdf509b886b in raise () at /usr/lib/libc.so.6
#7  0x00007fdf509a340e in abort () at /usr/lib/libc.so.6
#8  0x00007fdf37d76d80 in pa_fdsem_post () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#9  0x00007fdf37d8f51c in pa_srbchannel_write () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#10 0x00007fdf37d8d6d6 in  () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#11 0x00007fdf37d8e850 in  () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#12 0x00007fdf37d8eb8a in  () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#13 0x00007fdf37d8f440 in  () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#14 0x00007fdf37fcedb0 in  () at /usr/lib/libpulse-mainloop-glib.so.0
#15 0x00007fdf4b43a368 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007fdf4b43a5b1 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007fdf4b43a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007fdf5138be49 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007fdf45bf3b32 in  () at /usr/lib/libQt5XcbQpa.so.5
#20 0x00007fdf5133785c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#21 0x00007fdf5133fb56 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#22 0x00005567cb603685 in  ()
#23 0x00007fdf509a506b in __libc_start_main () at /usr/lib/libc.so.6
#24 0x00005567cb604d4a in _start ()

Reported using DrKonqi