Bug 363408

Summary:	Segfault when clicking "Analyse" in Auto Mask effect
Product:	[Applications] kdenlive	Reporter:	james.wilford
Component:	Video Effects & Transitions	Assignee:	Vincent PINON <vpinon>
Status:	RESOLVED FIXED
Severity:	crash	CC:	james.wilford, wegwerf-1-2-3
Priority:	NOR
Version First Reported In:	16.04.0
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description james.wilford 2016-05-22 18:50:20 UTC

Using kdenlive 16.04.1 from ppa.launchpad.net on kubuntu 16.04.

Steps to reproduce:

1. Add a clip
2. Add "Auto Mask" to the clip
3. Click "Analyse" button

Result: Segfault.

Backtrace obtained with gdb:

$ gdb kdenlive
GNU gdb (Ubuntu 7.11-0ubuntu1) 7.11
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from kdenlive...Reading symbols from /usr/lib/debug/.build-id/6e/82e04389daf1b043946d780b15f36d63fde46a.debug...done.
done.
(gdb) run
Starting program: /usr/bin/kdenlive
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe33a4700 (LWP 8912)]
[New Thread 0x7fffc3bb4700 (LWP 8913)]
[New Thread 0x7fffbd06d700 (LWP 8914)]
[New Thread 0x7fffb7fff700 (LWP 8915)]
[New Thread 0x7fffb77fe700 (LWP 8916)]
Removing cache at "/home/james/.cache/kdenlive-thumbs.kcache"
[New Thread 0x7fffb5a9b700 (LWP 8917)]
[Thread 0x7fffb5a9b700 (LWP 8917) exited]
[New Thread 0x7fffb5a9b700 (LWP 8918)]
OpenGL vendor:  "Intel Open Source Technology Center"
OpenGL renderer:  "Mesa DRI Intel(R) Haswell Desktop "
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
[New Thread 0x7fffa7fff700 (LWP 8920)]
OpenGL vendor:  "Intel Open Source Technology Center"
OpenGL renderer:  "Mesa DRI Intel(R) Haswell Desktop "
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
[New Thread 0x7fffa77fe700 (LWP 8921)]
[New Thread 0x7fffa6ffd700 (LWP 8922)]
[New Thread 0x7fffa67fc700 (LWP 8923)]
[New Thread 0x7fffa5ffb700 (LWP 8924)]
QXcbConnection: XCB error: 8 (BadMatch), sequence: 30289, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 30315, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 30337, resource id: 60823908, major code: 130 (Unknown), minor code: 3
KSambaShare: Could not find smb.conf!
[New Thread 0x7fff8fffd700 (LWP 8926)]
[Thread 0x7fff8fffd700 (LWP 8926) exited]
[New Thread 0x7fff8fffd700 (LWP 8927)]
[Thread 0x7fff8fffd700 (LWP 8927) exited]
[New Thread 0x7fff8fffd700 (LWP 8928)]
[New Thread 0x7fff8e70f700 (LWP 8929)]
[New Thread 0x7fff8d696700 (LWP 8930)]
[New Thread 0x7fff8ce95700 (LWP 8931)]
[New Thread 0x7fff7bffe700 (LWP 8932)]
[New Thread 0x7fff7b7fd700 (LWP 8933)]
[New Thread 0x7fff7affc700 (LWP 8934)]
[New Thread 0x7fff7a7fb700 (LWP 8935)]
[Thread 0x7fff8fffd700 (LWP 8928) exited]
[Thread 0x7fff7bffe700 (LWP 8932) exited]
[Thread 0x7fff7b7fd700 (LWP 8933) exited]
[Thread 0x7fff7affc700 (LWP 8934) exited]
[Thread 0x7fff8ce95700 (LWP 8931) exited]
[Thread 0x7fff8d696700 (LWP 8930) exited]
[Thread 0x7fff8e70f700 (LWP 8929) exited]
Removing cache at "/home/james/.cache/kdenlive-thumbs.kcache"
 // / processing file open
 // / processing file open: validate
Opening a document with version  0.94  /  0.94
 // / processing file validate ok
[Thread 0x7fffa5ffb700 (LWP 8924) exited]
[Thread 0x7fffb5a9b700 (LWP 8918) exited]
[Thread 0x7fffa67fc700 (LWP 8923) exited]
[Thread 0x7fffa77fe700 (LWP 8921) exited]
[New Thread 0x7fffa77fe700 (LWP 8937)]
[Thread 0x7fffa77fe700 (LWP 8937) exited]
[New Thread 0x7fffa77fe700 (LWP 8938)]
[New Thread 0x7fffa67fc700 (LWP 8939)]
[New Thread 0x7fffb5a9b700 (LWP 8940)]
[New Thread 0x7fffa5ffb700 (LWP 8941)]
[New Thread 0x7fff95952700 (LWP 8942)]
[New Thread 0x7fff95151700 (LWP 8943)]
[New Thread 0x7fff94950700 (LWP 8944)]
[New Thread 0x7fff9014e700 (LWP 8945)]
[Thread 0x7fffa77fe700 (LWP 8938) exited]
[Thread 0x7fff9014e700 (LWP 8945) exited]
[Thread 0x7fffa67fc700 (LWP 8939) exited]
[New Thread 0x7fffa67fc700 (LWP 8946)]
[Thread 0x7fffa67fc700 (LWP 8946) exited]
[New Thread 0x7fffa67fc700 (LWP 8947)]
[New Thread 0x7fff9014e700 (LWP 8948)]
***********
FOUND GUIDES:  0
**********
"Creating audio thumbnails (1/1)"
[New Thread 0x7fffa77fe700 (LWP 8949)]
[Thread 0x7fffa67fc700 (LWP 8947) exited]
[Thread 0x7fffa77fe700 (LWP 8949) exited]
[Thread 0x7fff9014e700 (LWP 8948) exited]
[New Thread 0x7fff9014e700 (LWP 8950)]
[Thread 0x7fff9014e700 (LWP 8950) exited]
[New Thread 0x7fff9014e700 (LWP 8951)]
[New Thread 0x7fffa77fe700 (LWP 8952)]
[New Thread 0x7fffa67fc700 (LWP 8953)]
[New Thread 0x7fff9414f700 (LWP 8954)]
[New Thread 0x7fff9394e700 (LWP 8955)]
[New Thread 0x7fff9314d700 (LWP 8956)]
[New Thread 0x7fff9294c700 (LWP 8957)]
[New Thread 0x7fff9214b700 (LWP 8958)]
[New Thread 0x7fff9194a700 (LWP 8959)]
QXcbConnection: XCB error: 8 (BadMatch), sequence: 45401, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 45427, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 45452, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 54116, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 54142, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 54167, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 54195, resource id: 60823908, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 54244, resource id: 60823908, major code: 130 (Unknown), minor code: 3
[New Thread 0x7fff8d196700 (LWP 8960)]
[New Thread 0x7fff7b665700 (LWP 8961)]
[New Thread 0x7fff79ffa700 (LWP 8962)]
[New Thread 0x7fff797f9700 (LWP 8963)]
[New Thread 0x7fff78ff8700 (LWP 8964)]
[New Thread 0x7fff6bfff700 (LWP 8965)]
[New Thread 0x7fff6b7fe700 (LWP 8966)]
[New Thread 0x7fff6affd700 (LWP 8967)]

Thread 49 "Thread (pooled)" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff79ffa700 (LWP 8962)]
generate_test_image (properties=properties@entry=0x7fff10001560, buffer=buffer@entry=0x7fff79ff9d38, format=format@entry=0x7fffb005549c,
    width=width@entry=0x7fff79ff9b58, height=height@entry=0x7fff79ff9b5c, writable=writable@entry=0) at mlt_frame.c:530
530     mlt_frame.c: No such file or directory.
(gdb)
(gdb) thread apply all bt

Thread 54 (Thread 0x7fff6affd700 (LWP 8967)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff6affd700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 53 (Thread 0x7fff6b7fe700 (LWP 8966)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff6b7fe700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 52 (Thread 0x7fff6bfff700 (LWP 8965)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff6bfff700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 51 (Thread 0x7fff78ff8700 (LWP 8964)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff78ff8700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 50 (Thread 0x7fff797f9700 (LWP 8963)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff797f9700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 49 (Thread 0x7fff79ffa700 (LWP 8962)):
#0  generate_test_image (properties=properties@entry=0x7fff10001560, buffer=buffer@entry=0x7fff79ff9d38, format=format@entry=0x7fffb005549c,
    width=width@entry=0x7fff79ff9b58, height=height@entry=0x7fff79ff9b5c, writable=writable@entry=0) at mlt_frame.c:530
#1  0x00007ffff6dc17f5 in mlt_frame_get_image (self=self@entry=0x7fff10001560, buffer=buffer@entry=0x7fff79ff9d38,
    format=format@entry=0x7fffb005549c, width=width@entry=0x7fff79ff9b58, height=height@entry=0x7fff79ff9b5c, writable=writable@entry=0)
    at mlt_frame.c:613
#2  0x00007fffd947a51a in filter_get_image (frame=frame@entry=0x7fff10001560, image=image@entry=0x7fff79ff9d38,
    format=format@entry=0x7fffb005549c, width=width@entry=0x7fff79ff9d24, height=height@entry=0x7fff79ff9d28, writable=writable@entry=0)
    at filter_resize.c:270
#3  0x00007ffff6dc1757 in mlt_frame_get_image (self=self@entry=0x7fff10001560, buffer=buffer@entry=0x7fff79ff9d38,
    format=format@entry=0x7fffb005549c, width=width@entry=0x7fff79ff9d24, height=height@entry=0x7fff79ff9d28, writable=writable@entry=0)
    at mlt_frame.c:585
#4  0x00007ffff6dd76d9 in producer_get_image (self=self@entry=0x7fff100008e0, buffer=buffer@entry=0x7fff79ff9d38,
    format=format@entry=0x7fffb005549c, width=width@entry=0x7fff79ff9d24, height=height@entry=0x7fff79ff9d28, writable=writable@entry=0)
    at mlt_tractor.c:370
#5  0x00007ffff6dc1757 in mlt_frame_get_image (self=self@entry=0x7fff100008e0, buffer=buffer@entry=0x7fff79ff9d38,
    format=format@entry=0x7fffb005549c, width=width@entry=0x7fff79ff9d24, height=height@entry=0x7fff79ff9d28, writable=writable@entry=0)
    at mlt_frame.c:585
#6  0x00007ffff6dd4e84 in consumer_read_ahead_thread (arg=0x7fffb0055400) at mlt_consumer.c:825
#7  0x00007fffefe2d6fa in start_thread (arg=0x7fff79ffa700) at pthread_create.c:333
#8  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 48 (Thread 0x7fff7b665700 (LWP 8961)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff6dd510b in mlt_consumer_rt_frame (self=self@entry=0x7fffb0055400) at mlt_consumer.c:1576
#2  0x00007fffd9482b2b in consumer_thread (arg=0x7fffb0055400) at consumer_null.c:146
---Type <return> to continue, or q <return> to quit---
#3  0x00007fffefe2d6fa in start_thread (arg=0x7fff7b665700) at pthread_create.c:333
#4  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 47 (Thread 0x7fff8d196700 (LWP 8960)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff1ef98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fffefe2d6fa in start_thread (arg=0x7fff8d196700) at pthread_create.c:333
#8  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 46 (Thread 0x7fff9194a700 (LWP 8959)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffc1e9095d in video_thread (arg=0x2fc08a0) at consumer_sdl_audio.c:423
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9194a700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 45 (Thread 0x7fff9214b700 (LWP 8958)):
#0  0x00007ffff14fff51 in __GI_ppoll (fds=0x7fff83a324d0, nfds=3, timeout=<optimised out>, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007fffec5d0aad in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fffec5d10ae in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fffcf06afeb in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4  0x00007fffcf03d920 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5  0x00007fffcf0470b8 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#6  0x00007fffcf086f59 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#7  0x00007fffefe2d6fa in start_thread (arg=0x7fff9214b700) at pthread_create.c:333
#8  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 44 (Thread 0x7fff9294c700 (LWP 8957)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9294c700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 43 (Thread 0x7fff9314d700 (LWP 8956)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9314d700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 42 (Thread 0x7fff9394e700 (LWP 8955)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9394e700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 41 (Thread 0x7fff9414f700 (LWP 8954)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9414f700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 40 (Thread 0x7fffa67fc700 (LWP 8953)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fffa67fc700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7fffa77fe700 (LWP 8952)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff6dd4993 in consumer_read_ahead_thread (arg=0x2fc08a0) at mlt_consumer.c:842
#2  0x00000000006ec9dd in RenderThread::run (this=0x7fff8900e8b0)
    at /build/kdenlive-jH_wig/kdenlive-16.04.0+git201605061539~ubuntu16.04.1/src/monitor/glwidget.cpp:1229
#3  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fffefe2d6fa in start_thread (arg=0x7fffa77fe700) at pthread_create.c:333
#5  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 38 (Thread 0x7fff9014e700 (LWP 8951)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffc1e9130f in consumer_thread (arg=0x2fc08a0) at consumer_sdl_audio.c:595
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff9014e700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fff94950700 (LWP 8944)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff94950700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fff95151700 (LWP 8943)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff95151700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fff95952700 (LWP 8942)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fff95952700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fffa5ffb700 (LWP 8941)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fffa5ffb700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fffb5a9b700 (LWP 8940)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffd5c1a63e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fffb5a9b700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fff7a7fb700 (LWP 8935)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fffee469cca in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee3f9929 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffee3f9f4b in g_async_queue_timeout_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fffee44c59a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#5  0x00007fffee44bb45 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fffefe2d6fa in start_thread (arg=0x7fff7a7fb700) at pthread_create.c:333
#7  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fffa6ffd700 (LWP 8922)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff1ef98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fffefe2d6fa in start_thread (arg=0x7fffa6ffd700) at pthread_create.c:333
#8  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fffa7fff700 (LWP 8920)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff1ef98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fffefe2d6fa in start_thread (arg=0x7fffa7fff700) at pthread_create.c:333
#8  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fffb77fe700 (LWP 8916)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff1ef98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff2caa3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffefe2d6fa in start_thread (arg=0x7fffb77fe700) at pthread_create.c:333
#9  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fffb7fff700 (LWP 8915)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff6badf2a in Mlt::Properties::wait_for (this=this@entry=0x7fffb00553d0, event=event@entry=0x7fffb004eba0,
    destroy=destroy@entry=true) at MltProperties.cpp:279
#2  0x00007ffff6ba85ba in Mlt::Consumer::run (this=0x7fffb00553d0) at MltConsumer.cpp:133
#3  0x00000000004f0f3b in MeltJob::startJob (this=0x7573ec0)
    at /build/kdenlive-jH_wig/kdenlive-16.04.0+git201605061539~ubuntu16.04.1/src/project/jobs/meltjob.cpp:218
#4  0x00000000004f7a7f in JobManager::slotProcessJobs (this=0x3575340)
    at /build/kdenlive-jH_wig/kdenlive-16.04.0+git201605061539~ubuntu16.04.1/src/project/jobs/jobmanager.cpp:191
#5  0x00000000004ccaed in QtConcurrent::RunFunctionTask<void>::run (this=0x6586580)
    at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:130
#6  0x00007ffff1efb343 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffefe2d6fa in start_thread (arg=0x7fffb7fff700) at pthread_create.c:333
#9  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 4 (Thread 0x7fffbd06d700 (LWP 8914)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff1ef98a4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff2caa3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffefe2d6fa in start_thread (arg=0x7fffbd06d700) at pthread_create.c:333
#9  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fffc3bb4700 (LWP 8913)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffc8c0a64c in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007fffefe2d6fa in start_thread (arg=0x7fffc3bb4700) at pthread_create.c:333
#3  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fffe33a4700 (LWP 8912)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffec18fc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fffec1918d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffe56f6629 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ffff1efe84e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fffefe2d6fa in start_thread (arg=0x7fffe33a4700) at pthread_create.c:333
#6  0x00007ffff150bb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fffe5aa08c0 (LWP 8908)):
#0  0x00007ffff14ffe8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fffee42531c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffee42542c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff2135a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff20dcdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff20e4e8c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00000000004859d2 in main (argc=1, argv=<optimised out>)
    at /build/kdenlive-jH_wig/kdenlive-16.04.0+git201605061539~ubuntu16.04.1/src/main.cpp:130
(gdb)

Listing of mlt packages:

# dpkg -l *mlt*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                           Version              Architecture         Description
+++-==============================-====================-====================-=================================================================
un  libmlt++0.2                    <none>               <none>               (no description available)
un  libmlt++2                      <none>               <none>               (no description available)
ii  libmlt++3                      6.0.0+git20160329175 amd64                MLT multimedia framework C++ wrapper (runtime)
ii  libmlt-data                    6.0.0+git20160329175 all                  multimedia framework (data)
ii  libmlt-dbg                     6.0.0+git20160329175 amd64                multimedia framework (debugging symbols)
un  libmlt0.2                      <none>               <none>               (no description available)
un  libmlt0.2.5                    <none>               <none>               (no description available)
un  libmlt1                        <none>               <none>               (no description available)
un  libmlt2                        <none>               <none>               (no description available)
un  libmlt3                        <none>               <none>               (no description available)
un  libmlt4                        <none>               <none>               (no description available)
un  libmlt5                        <none>               <none>               (no description available)
ii  libmlt6                        6.0.0+git20160329175 amd64                multimedia framework (runtime)
un  libxmltooling6                 <none>               <none>               (no description available)
un  sgmltools-2                    <none>               <none>               (no description available)

Please let me know if any more information is required.

Comment 1 Wegwerf 2016-08-12 16:17:16 UTC

Cannot reproduce with recent beta 16.07.90. Can you please try the beta or 16.04.2 and MLT 6.2.0+ to see if you still see a crash?