Application: kdenlive (16.07.70)

Qt Version: 5.5.1
Frameworks Version: 5.23.0
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed: had made a few edits on a single clip with audio and video in one track; used razor tool again to cut at a marker point and application crashed.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7eff4c7668c0 (LWP 4387))]

Thread 37 (Thread 0x7efef1ff6700 (LWP 5040)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff18637cdd in ?? () from /usr/lib/mlt/libmltsdl.so
#2  0x00007eff450a270a in start_thread (arg=0x7efef1ff6700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7efeefb8a700 (LWP 5039)):
#0  0x00007eff46795c21 in __GI_ppoll (fds=0x7efedba88050, nfds=3, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007eff4179eaad in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007eff4179f0ae in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007eff183cafeb in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4  0x00007eff1839d920 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5  0x00007eff183a70b8 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#6  0x00007eff183e6f59 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#7  0x00007eff450a270a in start_thread (arg=0x7efeefb8a700) at pthread_create.c:333
#8  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7efeed4c1700 (LWP 5038)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff4c0f97f3 in ?? () from /usr/lib/libmlt.so.6
#2  0x00000000007fb645 in RenderThread::run() ()
#3  0x00007eff471a87be in QThreadPrivate::start (arg=0x7efea68342d0) at thread/qthread_unix.cpp:331
#4  0x00007eff450a270a in start_thread (arg=0x7efeed4c1700) at pthread_create.c:333
#5  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7efef27f7700 (LWP 5037)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff1863868f in ?? () from /usr/lib/mlt/libmltsdl.so
#2  0x00007eff450a270a in start_thread (arg=0x7efef27f7700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7efef0c21700 (LWP 5007)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007eff471a9996 in QWaitConditionPrivate::wait_relative (time=30000, this=0x3f1fec0) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x3f1fec0) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x37ee660, mutex=mutex@entry=0x37c93b0, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007eff471a5463 in QThreadPoolThread::run (this=0x37ee650) at thread/qthreadpool.cpp:127
#5  0x00007eff471a87be in QThreadPrivate::start (arg=0x37ee650) at thread/qthread_unix.cpp:331
#6  0x00007eff450a270a in start_thread (arg=0x7efef0c21700) at pthread_create.c:333
#7  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7efe7a7f7700 (LWP 4865)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe7a7f7700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7efe7aff8700 (LWP 4864)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe7aff8700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7efe7b7f9700 (LWP 4863)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe7b7f9700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7efe7bffa700 (LWP 4862)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe7bffa700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7efe94e90700 (LWP 4861)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe94e90700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7efe95e92700 (LWP 4805)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efe95e92700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7efee119e700 (LWP 4804)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee119e700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7efee21a0700 (LWP 4803)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee21a0700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7efee4ff9700 (LWP 4802)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee4ff9700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7efee57fa700 (LWP 4801)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee57fa700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7efee77fe700 (LWP 4800)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee77fe700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7efee5ffb700 (LWP 4799)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee5ffb700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7efee67fc700 (LWP 4798)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee67fc700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7efee6ffd700 (LWP 4797)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee6ffd700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7efef1422700 (LWP 4796)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efef1422700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7efef2ff8700 (LWP 4534)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efef2ff8700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7efef37f9700 (LWP 4533)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efef37f9700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7efef3ffa700 (LWP 4532)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efef3ffa700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7efee7fff700 (LWP 4531)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee7fff700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7efeedcc2700 (LWP 4530)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efeedcc2700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7efee29a1700 (LWP 4443)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee29a1700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7efee31a2700 (LWP 4442)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee31a2700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7efee3ffa700 (LWP 4441)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee3ffa700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7efee199f700 (LWP 4440)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7efee199f700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7eff0d6c7700 (LWP 4439)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff252c6f5e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007eff450a270a in start_thread (arg=0x7eff0d6c7700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7efeb37fe700 (LWP 4413)):
#0  0x00007eff436a9ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007eff43664330 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff43665255 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff436654ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff473df7eb in QEventDispatcherGlib::processEvents (this=0x7efea00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007eff47386b4a in QEventLoop::exec (this=this@entry=0x7efeb37fdd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007eff471a3834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007eff471a87be in QThreadPrivate::start (arg=0x577ed10) at thread/qthread_unix.cpp:331
#8  0x00007eff450a270a in start_thread (arg=0x7efeb37fe700) at pthread_create.c:333
#9  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7efeb3fff700 (LWP 4412)):
#0  0x00007eff436a9ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007eff43664b51 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff43665317 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff436654ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff473df7eb in QEventDispatcherGlib::processEvents (this=0x7efea80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007eff47386b4a in QEventLoop::exec (this=this@entry=0x7efeb3ffed00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007eff471a3834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007eff471a87be in QThreadPrivate::start (arg=0x577f7d0) at thread/qthread_unix.cpp:331
#8  0x00007eff450a270a in start_thread (arg=0x7efeb3fff700) at pthread_create.c:333
#9  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7eff0cec6700 (LWP 4394)):
#0  0x00007eff4679169d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff436a8740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff43664e84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff43665340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff436654ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007eff473df7eb in QEventDispatcherGlib::processEvents (this=0x7efef80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007eff47386b4a in QEventLoop::exec (this=this@entry=0x7eff0cec5ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007eff471a3834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007eff47f5c3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007eff471a87be in QThreadPrivate::start (arg=0x3ff1950) at thread/qthread_unix.cpp:331
#10 0x00007eff450a270a in start_thread (arg=0x7eff0cec6700) at pthread_create.c:333
#11 0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7eff0e6c8700 (LWP 4392)):
#0  0x00007eff46795b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff4366539c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff436654ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff473df7eb in QEventDispatcherGlib::processEvents (this=0x7eff000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007eff47386b4a in QEventLoop::exec (this=this@entry=0x7eff0e6c7ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007eff471a3834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007eff47f5c3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007eff471a87be in QThreadPrivate::start (arg=0x3016f80) at thread/qthread_unix.cpp:331
#8  0x00007eff450a270a in start_thread (arg=0x7eff0e6c8700) at pthread_create.c:333
#9  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7eff0eec9700 (LWP 4391)):
#0  0x00007eff4676675d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff467981a4 in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:32
#2  0x00007eff2db8bf20 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#3  0x00007eff2d2dcf22 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#4  0x00007eff2d2dcf75 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#5  0x00007eff450a270a in start_thread (arg=0x7eff0eec9700) at pthread_create.c:333
#6  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7eff1a80a700 (LWP 4390)):
#0  0x00007eff46795b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff2207264c in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007eff450a270a in start_thread (arg=0x7eff1a80a700) at pthread_create.c:333
#3  0x00007eff467a182d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7eff4c7668c0 (LWP 4387)):
[KCrash Handler]
#6  QGraphicsItem::setFlag (this=0x0, flag=QGraphicsItem::ItemIsMovable, enabled=false) at graphicsview/qgraphicsitem.cpp:1783
#7  0x00000000006340c2 in GuideManager::mouseRelease(GenTime) ()
#8  0x00000000005bd200 in CustomTrackView::mouseReleaseEvent(QMouseEvent*) ()
#9  0x00007eff48998f88 in QWidget::event (this=this@entry=0x5ace8d0, event=event@entry=0x7ffdf7c6e810) at kernel/qwidget.cpp:9044
#10 0x00007eff48a97b4e in QFrame::event (this=0x5ace8d0, e=0x7ffdf7c6e810) at widgets/qframe.cpp:540
#11 0x00007eff48ca7e93 in QGraphicsView::viewportEvent (this=0x5ace8d0, event=0x7ffdf7c6e810) at graphicsview/qgraphicsview.cpp:2962
#12 0x00007eff47389172 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x245e970, receiver=receiver@entry=0x5ae6680, event=event@entry=0x7ffdf7c6e810) at kernel/qcoreapplication.cpp:1072
#13 0x00007eff4895603c in QApplicationPrivate::notify_helper (this=this@entry=0x245e970, receiver=receiver@entry=0x5ae6680, e=e@entry=0x7ffdf7c6e810) at kernel/qapplication.cpp:3712
#14 0x00007eff4895bc19 in QApplication::notify (this=<optimized out>, receiver=0x5ae6680, e=0x7ffdf7c6e810) at kernel/qapplication.cpp:3276
#15 0x00007eff4738938b in QCoreApplication::notifyInternal (this=0x7ffdf7c6f0b0, receiver=receiver@entry=0x5ae6680, event=event@entry=0x7ffdf7c6e810) at kernel/qcoreapplication.cpp:965
#16 0x00007eff4895ab32 in QCoreApplication::sendSpontaneousEvent (event=0x7ffdf7c6e810, receiver=0x5ae6680) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#17 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5ae6680, event=event@entry=0x7ffdf7c6e810, alienWidget=alienWidget@entry=0x5ae6680, nativeWidget=0x5ace8d0, buttonDown=buttonDown@entry=0x7eff48e86b20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#18 0x00007eff489b357b in QWidgetWindow::handleMouseEvent (this=this@entry=0x5ae1c00, event=event@entry=0x7ffdf7c6ec20) at kernel/qwidgetwindow.cpp:555
#19 0x00007eff489b5b3b in QWidgetWindow::event (this=0x5ae1c00, event=0x7ffdf7c6ec20) at kernel/qwidgetwindow.cpp:210
#20 0x00007eff4895605c in QApplicationPrivate::notify_helper (this=this@entry=0x245e970, receiver=receiver@entry=0x5ae1c00, e=e@entry=0x7ffdf7c6ec20) at kernel/qapplication.cpp:3716
#21 0x00007eff4895b516 in QApplication::notify (this=0x7ffdf7c6f0b0, receiver=0x5ae1c00, e=0x7ffdf7c6ec20) at kernel/qapplication.cpp:3499
#22 0x00007eff4738938b in QCoreApplication::notifyInternal (this=0x7ffdf7c6f0b0, receiver=receiver@entry=0x5ae1c00, event=event@entry=0x7ffdf7c6ec20) at kernel/qcoreapplication.cpp:965
#23 0x00007eff476cd4e1 in QCoreApplication::sendSpontaneousEvent (event=0x7ffdf7c6ec20, receiver=0x5ae1c00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#24 QGuiApplicationPrivate::processMouseEvent (e=0x9bb6900) at kernel/qguiapplication.cpp:1804
#25 0x00007eff476cf1a5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x9bb6900) at kernel/qguiapplication.cpp:1596
#26 0x00007eff476b2f08 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#27 0x00007eff3ac9e060 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#28 0x00007eff436651a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007eff43665400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007eff436654ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007eff473df7cf in QEventDispatcherGlib::processEvents (this=0x2494700, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#32 0x00007eff47386b4a in QEventLoop::exec (this=this@entry=0x7ffdf7c6efa0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#33 0x00007eff4738ebec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#34 0x000000000091522a in main ()

Reported using DrKonqi