Application: kdenlive (17.12.2)

Qt Version: 5.10.1
Frameworks Version: 5.43.0
Operating System: Linux 4.15.3-2-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
When I enable  "Use GPU processing (Movit library)" in Preferences / Playback, Kdenlive always crashes immediately on starting playback.
- Kdenlive 17.12.2 from Arch Linux Repos
- Movit 1.6.1-1 from Arch Linux Repos
- AMD RX 580 card with amdgpu driver
- Mesa 17.3.5 from Arch Linux Repos
As far as I can remember, it has never worked wie GPU processing on my system (without no problem).

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f971b4a3d80 (LWP 18828))]

Thread 109 (Thread 0x7f95077fe700 (LWP 18966)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96c127636e in  () at /usr/lib/mlt/libmltsdl2.so
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 108 (Thread 0x7f9544ff1700 (LWP 18965)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 107 (Thread 0x7f95457f2700 (LWP 18964)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 106 (Thread 0x7f9545ff3700 (LWP 18963)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 105 (Thread 0x7f95467f4700 (LWP 18962)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 104 (Thread 0x7f9546ff5700 (LWP 18961)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 103 (Thread 0x7f95477f6700 (LWP 18960)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 102 (Thread 0x7f9547ff7700 (LWP 18959)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 101 (Thread 0x7f95487f8700 (LWP 18958)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 100 (Thread 0x7f9548ff9700 (LWP 18957)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 99 (Thread 0x7f95497fa700 (LWP 18956)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 98 (Thread 0x7f9549ffb700 (LWP 18955)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 97 (Thread 0x7f954a7fc700 (LWP 18954)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 96 (Thread 0x7f954affd700 (LWP 18953)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 95 (Thread 0x7f954b7fe700 (LWP 18952)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 94 (Thread 0x7f954bfff700 (LWP 18951)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 93 (Thread 0x7f9564ff9700 (LWP 18950)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 92 (Thread 0x7f9566ffd700 (LWP 18949)):
#0  0x00007f97138ec8c7 in getpid () at /usr/lib/libc.so.6
#1  0x00007f9703e5bc80 in pa_detect_fork () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f970aa1f97c in pa_stream_writable_size () at /usr/lib/libpulse.so.0
#3  0x00007f96c10097d5 in  () at /usr/lib/libSDL2-2.0.so.0
#4  0x00007f96c0f7f4d3 in  () at /usr/lib/libSDL2-2.0.so.0
#5  0x00007f96c0fca3cf in  () at /usr/lib/libSDL2-2.0.so.0
#6  0x00007f96c102323a in  () at /usr/lib/libSDL2-2.0.so.0
#7  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 91 (Thread 0x7f95a67fc700 (LWP 18948)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 90 (Thread 0x7f95a6ffd700 (LWP 18947)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 89 (Thread 0x7f95a77fe700 (LWP 18946)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 88 (Thread 0x7f95a7fff700 (LWP 18945)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 87 (Thread 0x7f95acff9700 (LWP 18944)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 86 (Thread 0x7f95ad7fa700 (LWP 18943)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 85 (Thread 0x7f95adffb700 (LWP 18942)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 84 (Thread 0x7f95ae7fc700 (LWP 18941)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 83 (Thread 0x7f95aeffd700 (LWP 18940)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 82 (Thread 0x7f95af7fe700 (LWP 18939)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 81 (Thread 0x7f95affff700 (LWP 18938)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 80 (Thread 0x7f95ecfe9700 (LWP 18937)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 79 (Thread 0x7f95ed7ea700 (LWP 18936)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 78 (Thread 0x7f95edfeb700 (LWP 18935)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 77 (Thread 0x7f95ee7ec700 (LWP 18934)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 76 (Thread 0x7f95eefed700 (LWP 18933)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f971a7999ec in  () at /usr/lib/libmlt.so.6
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 75 (Thread 0x7f95ef7ee700 (LWP 18932)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 74 (Thread 0x7f95effef700 (LWP 18931)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 73 (Thread 0x7f95f07f0700 (LWP 18930)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 72 (Thread 0x7f95f0ff1700 (LWP 18929)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 71 (Thread 0x7f95f17f2700 (LWP 18928)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 70 (Thread 0x7f95f1ff3700 (LWP 18927)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 69 (Thread 0x7f95f27f4700 (LWP 18926)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 68 (Thread 0x7f95f2ff5700 (LWP 18925)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 67 (Thread 0x7f95f37f6700 (LWP 18924)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 66 (Thread 0x7f95f3ff7700 (LWP 18923)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 65 (Thread 0x7f95f47f8700 (LWP 18922)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 64 (Thread 0x7f95f4ff9700 (LWP 18921)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 63 (Thread 0x7f95f57fa700 (LWP 18920)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 62 (Thread 0x7f95f5ffb700 (LWP 18919)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 61 (Thread 0x7f95f67fc700 (LWP 18918)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 60 (Thread 0x7f95f6ffd700 (LWP 18917)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 59 (Thread 0x7f95f77fe700 (LWP 18916)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 58 (Thread 0x7f95f7fff700 (LWP 18915)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 57 (Thread 0x7f95fcff9700 (LWP 18914)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 56 (Thread 0x7f95fd7fa700 (LWP 18913)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 55 (Thread 0x7f95fdffb700 (LWP 18912)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 54 (Thread 0x7f95fe7fc700 (LWP 18911)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 53 (Thread 0x7f95feffd700 (LWP 18910)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 52 (Thread 0x7f95ff7fe700 (LWP 18909)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 51 (Thread 0x7f95fffff700 (LWP 18908)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 50 (Thread 0x7f9638cfc700 (LWP 18907)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 49 (Thread 0x7f96394fd700 (LWP 18906)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 48 (Thread 0x7f9639cfe700 (LWP 18905)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 47 (Thread 0x7f963a4ff700 (LWP 18904)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 46 (Thread 0x7f963ad00700 (LWP 18903)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 45 (Thread 0x7f963b501700 (LWP 18902)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 44 (Thread 0x7f965c810700 (LWP 18901)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 43 (Thread 0x7f965ffff700 (LWP 18900)):
[KCrash Handler]
#5  0x00007f96aa0cb1af in  () at /usr/lib/libswscale.so.4
#6  0x00007f96aa079f2f in  () at /usr/lib/libswscale.so.4
#7  0x00007f96aa0ad82e in  () at /usr/lib/libswscale.so.4
#8  0x00007f96aa0aed16 in sws_scale () at /usr/lib/libswscale.so.4
#9  0x00007f96b30af912 in  () at /usr/lib/mlt/libmltavformat.so
#10 0x00007f96beb65964 in  () at /usr/lib/mlt/libmltopengl.so
#11 0x00007f96beb67860 in  () at /usr/lib/mlt/libmltopengl.so
#12 0x00007f971a77e1e3 in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#13 0x00007f96bfa1bc60 in  () at /usr/lib/mlt/libmltqt.so
#14 0x00007f971a77e182 in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#15 0x00007f971a7941ab in  () at /usr/lib/libmlt.so.6
#16 0x00007f971a77e182 in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#17 0x00007f971a7915ef in  () at /usr/lib/libmlt.so.6
#18 0x00005645964ca70e in  ()
#19 0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#20 0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#21 0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 42 (Thread 0x7f9675296700 (LWP 18899)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 41 (Thread 0x7f963bd02700 (LWP 18898)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96c1276256 in  () at /usr/lib/mlt/libmltsdl2.so
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 40 (Thread 0x7f96b2548700 (LWP 18897)):
#0  0x00007f971390f3d8 in read () at /usr/lib/libc.so.6
#1  0x00007f9703e6c7c2 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f970aa167af in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007f970aa17241 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f970aa17301 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f96c1009930 in  () at /usr/lib/libSDL2-2.0.so.0
#6  0x00007f96c0fca3cf in  () at /usr/lib/libSDL2-2.0.so.0
#7  0x00007f96c102323a in  () at /usr/lib/libSDL2-2.0.so.0
#8  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 39 (Thread 0x7f9640b0d700 (LWP 18887)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 38 (Thread 0x7f964130e700 (LWP 18886)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 37 (Thread 0x7f9641b0f700 (LWP 18885)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 36 (Thread 0x7f9642310700 (LWP 18884)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 35 (Thread 0x7f9642b11700 (LWP 18883)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 34 (Thread 0x7f9643312700 (LWP 18882)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 33 (Thread 0x7f9643b13700 (LWP 18881)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 32 (Thread 0x7f9644314700 (LWP 18880)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 31 (Thread 0x7f9644b15700 (LWP 18879)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 30 (Thread 0x7f9645316700 (LWP 18878)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 29 (Thread 0x7f9645b17700 (LWP 18877)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 28 (Thread 0x7f9646318700 (LWP 18876)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 27 (Thread 0x7f9646b19700 (LWP 18875)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 26 (Thread 0x7f964731a700 (LWP 18874)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 25 (Thread 0x7f9647b1b700 (LWP 18873)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 24 (Thread 0x7f969cecf700 (LWP 18872)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96aaf3b62f in  () at /usr/lib/libavcodec.so.57
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7f965effd700 (LWP 18857)):
#0  0x00007f971391397b in poll () at /usr/lib/libc.so.6
#1  0x00007f970aeabff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f97145ab314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f971435c7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7f965f7fe700 (LWP 18856)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7f9674a95700 (LWP 18854)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7f9675a97700 (LWP 18852)):
#0  0x00007f970aef2b94 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f970aeab509 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f970aeabf1e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f97145ab314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f971435c7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7f9676298700 (LWP 18851)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7f9676a99700 (LWP 18850)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f967729a700 (LWP 18849)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f969e8a9700 (LWP 18844)):
#0  0x00007f971391397b in poll () at /usr/lib/libc.so.6
#1  0x00007f970aeabff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f97145ab314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f971435c7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9715817379 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f969f0aa700 (LWP 18843)):
#0  0x00007f97119386fd in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9714362ee1 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f971435edb1 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#4  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#5  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f96adaf8700 (LWP 18842)):
#0  0x00007f971391397b in poll () at /usr/lib/libc.so.6
#1  0x00007f970aeabff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f97145ab314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f971435c7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9715817379 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f96a2f8c700 (LWP 18840)):
#0  0x00007f971391397b in poll () at /usr/lib/libc.so.6
#1  0x00007f96a8a76d31 in  () at /usr/lib/libusb-1.0.so.0
#2  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#3  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f96e8ff9700 (LWP 18839)):
#0  0x00007f970aeab51f in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f970aeabf1e in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f97145ab314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f971435c7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9717173416 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f96e97fa700 (LWP 18838)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f96e9ffb700 (LWP 18837)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f96ea7fc700 (LWP 18836)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f96eaffd700 (LWP 18835)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f96eb7fe700 (LWP 18834)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f96e3fff700 (LWP 18833)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f96ebfff700 (LWP 18832)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f96f0f54700 (LWP 18831)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f96f59f0fbc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f96f59f0ec8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f96fd90e700 (LWP 18830)):
#0  0x00007f971391397b in poll () at /usr/lib/libc.so.6
#1  0x00007f970a5d08e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f970a5d2679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f97002a382a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f9714361b4d in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f9701482700 (LWP 18829)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9713fde5bd in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  0x00007f9713fde5bd in std::condition_variable::wait(std::unique_lock<std::mutex>&) (this=<optimized out>, __lock=...) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f97109b2d09 in  () at /usr/lib/libQt5WebKit.so.5
#4  0x00007f97109b2e59 in  () at /usr/lib/libQt5WebKit.so.5
#5  0x00007f9713fe4b9f in std::execute_native_thread_routine(void*) (__p=0x564598208b90) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/thread.cc:83
#6  0x00007f971193208c in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f971391de7f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f971b4a3d80 (LWP 18828)):
#0  0x00007f97119383bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f970a5d0b57 in  () at /usr/lib/libxcb.so.1
#2  0x00007f970a5d239f in  () at /usr/lib/libxcb.so.1
#3  0x00007f970a5d24b2 in xcb_wait_for_reply () at /usr/lib/libxcb.so.1
#4  0x00007f97002a26ec in QXcbConnection::sync() () at /usr/lib/libQt5XcbQpa.so.5
#5  0x00007f97002c4ab4 in  () at /usr/lib/libQt5XcbQpa.so.5
#6  0x00007f97002c4bac in  () at /usr/lib/libQt5XcbQpa.so.5
#7  0x00007f9714c6a07c in QBackingStore::beginPaint(QRegion const&) () at /usr/lib/libQt5Gui.so.5
#8  0x00007f97163156ab in  () at /usr/lib/libQt5Widgets.so.5
#9  0x00007f9716315b55 in  () at /usr/lib/libQt5Widgets.so.5
#10 0x00007f971632d842 in QWidgetPrivate::syncBackingStore() () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f9716346309 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f971645ee91 in QMainWindow::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f971931a45b in KMainWindow::event(QEvent*) () at /usr/lib/libKF5XmlGui.so.5
#14 0x00007f971936b9d6 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/libKF5XmlGui.so.5
#15 0x00007f9716305fec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#16 0x00007f971630d9c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f971454eda0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#18 0x00007f9714551a06 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#19 0x00007f97145abd04 in  () at /usr/lib/libQt5Core.so.5
#20 0x00007f970aeabe38 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#21 0x00007f970aeac081 in  () at /usr/lib/libglib-2.0.so.0
#22 0x00007f970aeac10e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#23 0x00007f97145ab2f1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#24 0x00007f970032b482 in  () at /usr/lib/libQt5XcbQpa.so.5
#25 0x00007f971454d3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#26 0x00007f97145567d8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#27 0x00005645961eb8a0 in  ()
#28 0x00007f9713848f4a in __libc_start_main () at /usr/lib/libc.so.6
#29 0x00005645961ec0ba in _start ()

Reported using DrKonqi