[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #12 from Aurelia  ---
Hello Wegwerf!
maybe I find the command line to print backtrace from GDB : here
http://web.mit.edu/gnu/doc/html/gdb_8.html
I will test this evening.

However, you said that for you the transition do not crash ...I'm asking my
self with whitch version of Ubuntu are you ? How do you install kdenlive and do
the update and upgrade in the aim of do the same as you 
For my part  I run Ubuntu studio 16.04 is it the problem ?

Am I the only one in this case?

Tell me more .

Thank and have a good day !

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #14 from Aurelia  ---
Hi, 

I tried to use testing packages, so I did the following:
Change "http://ppa.launchpad.net/kdenlive/kdenlive-stable/ubuntu xenial main"
to "http://ppa.launchpad.net/kdenlive/kdenlive-testing/ubuntu xenial main" in
/etc/apt/sources.list.d/kdenlive-ubuntu-kdenlive-stable-xenial.list

run aptitude update && aptitude safe-upgrade

The following packages were updated:
libvidstab1.1
libmlt6 (6.3.0+git201608140258~ubuntu16.04.1 to
6.3.0+git201609270616~ubuntu16.04.1)
libmlt-data (6.3.0+git201608140258~ubuntu16.04.1 to
6.3.0+git201609270616~ubuntu16.04.1)
libmlt++3 (6.3.0+git201608140258~ubuntu16.04.1 to
6.3.0+git201609270616~ubuntu16.04.1)
python-mlt (6.3.0+git201608140258~ubuntu16.04.1 to
6.3.0+git201609270616~ubuntu16.04.1)

After this upgrade, Kdenlive does not crash anymore.
I am going to do some additional tests and keep you updated.

Regards,
Aurélia

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

Aurelia  changed:

   What|Removed |Added

 CC||aurelia.gourb...@gmail.com

--- Comment #3 from Aurelia  ---
Hi all! 

I was on my way to create on new bug report, but I think I am faceting the same
issue as Pascal.

First:
I am running a Ubuntu Studio 16.04 up to date.

I updated kdenlive from your PPA:
Kdenlive: 
Version: 16.08.1
Using:
KDE Frameworks 5.18.0
Qt 5.5.1 (built against 5.5.1)
The xcb windowing system

I can reproduce the following issue:
I add 2 clips on a brand new project, then add a transition, when I click on
preview => kdenlive crashes.
As Pascal , the rendering stops when the transition came without crash . When I
remove the transition the rendering is good until the end.

I also reproduced this issue on 2 differents computer (one using a virtualbox).

Always reproductible except some transitions: 

diaporama: ok
affine : ok
transition par balayage : ok
dissoudre: ok 

I ran kdenlive with gdb and got the following stack traces:

addition :
Thread 65 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8a5c6700 (LWP 1859)]
0x7fffae46830d in addition::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/addition.so

alphaatop:
Thread 15 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8a5c6700 (LWP 1884)]
0x7fff88e4428f in alphaatop::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/alphaatop.so

alphain:
Thread 15 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8a5c6700 (LWP 1911)]
0x7fff88fc227f in alphain::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/alphain.so

burn:
Thread 15 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8a5c6700 (LWP 1942)]
0x7fff88fc2276 in burn::update(double, unsigned int*, unsigned int const*,
unsigned int const*) () from /usr/lib/frei0r-1/burn.so

cairo affine blend
Thread 14 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8ede1700 (LWP 1970)]
0x7fff8ede385f in frei0r_cairo_premultiply_rgba ()
   from /usr/lib/frei0r-1/cairoaffineblend.so

difference
Thread 14 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8eddf700 (LWP 2001)]
0x7fff8ede4292 in difference::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/difference.so

softlight:
Thread 26 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff89fcc700 (LWP 2038)]
0x7fff8812d286 in softlight::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/softlight.so

saturation:
Thread 14 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8edde700 (LWP 2062)]
0x7fff8ede3ad7 in saturation::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/saturation.so

Hope my comment will help to resolve this issue!
Fell free to ask me to do some additionnals tests.

Aurélia

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #6 from Aurelia  ---
Hi Wegwerf!
Thank you very much for your answer!
Where did you download the frei0r packages?
In my case i dwonloaded here: https://files.dyne.org/frei0r/  
frei0r-plugins-1.5.0.tar.gz
I will retry from the same link.
and I'll tell you.
Thanks!

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #7 from Aurelia  ---
I tried to reinstall  (aptitude reinstall frei0r-plugins) -> same issue.

I tried to build frei0r-plugins-1.5.0.tar.gz (after removing frei0r-plugins
from ubuntu package, aptitude purge frei0r-plugins), I get the following error
(running kdenlive with gdb):

Thread 17 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff95100700 (LWP 26436)]
burn::update (in3=, in2=, in1=,
out=, time=, this=)
at
/home/toto/Téléchargements/frei0r-plugins-1.5.0/src/mixer2/burn/burn.cpp:65
65dst[b] = (uint8_t) CLAMP0255(255 - tmp);

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #8 from Aurelia  ---
thank for your help...

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[kdenlive] [Bug 369582] Overlay/Alpha/...-transition lead to crash while previewing or cancel of rendering

[Aurelia via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=369582

--- Comment #10 from Aurelia  ---
Hi Wegwerf, thank again for your answer.

I will try to answer you as well as I can because I feel a little "lost" ;-) !

First: " First, to be sure, did you use the burn effect": I tried to use the
"Burn" transition--->crash (with the error that I past) but the crash happen
also with the other transition the same as my first post... Only a few of them
function : dissolve, affine, diaporama...

Second : "can you check if when the segmentation fault happens in line 65, is
dst 0"
 How can I check this ?

Third: "has b some sane value, within widt*height*4 I assume?" 
I can't find this item in the shell, where can I find this?
Tell me more please !
I'm really want to find what's wrong
Thank you very much again!


This evening with my computer I try again , I past here the bug when I ran
Kdenlive with gdb, this time with "overlay" transition:


aurelia@aurelia-desktop:~$ gdb /usr/bin/kdenlive
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
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:
.
Find the GDB manual and other documentation resources online at:
.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/kdenlive...(no debugging symbols found)...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 0x7fffe234d700 (LWP 3734)]
[New Thread 0x7fffd42f5700 (LWP 3735)]
[New Thread 0x7fffd3af4700 (LWP 3736)]
[New Thread 0x7fffbd0d4700 (LWP 3737)]
no more csLADSPA plugins
[New Thread 0x7fffafab1700 (LWP 3741)]
[New Thread 0x7fffaeab0700 (LWP 3742)]
[New Thread 0x7fffae2af700 (LWP 3743)]
[New Thread 0x7fffad2ae700 (LWP 3744)]
Removing cache at "/home/aurelia/.cache/kdenlive-thumbs.kcache"
[New Thread 0x7fff9f61d700 (LWP 3746)]
OpenGL vendor:  "NVIDIA Corporation"
OpenGL renderer:  "GeForce 7025 / nForce 630a/integrated/SSE2"
OpenGL Threaded:  true
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
[New Thread 0x7fff9ec1c700 (LWP 3747)]
[New Thread 0x7fff9e3d0700 (LWP 3748)]
[Thread 0x7fffbd0d4700 (LWP 3737) exited]
[Thread 0x7fff9e3d0700 (LWP 3748) exited]
Removing cache at "/home/aurelia/.cache/kdenlive-thumbs.kcache"
 // / processing file open
 // / processing file open: validate
Opening a document with version  0.95  /  0.95
 // / processing file validate ok
***
FOUND GUIDES:  0 
**
[Thread 0x7fffaeab0700 (LWP 3742) exited]
[New Thread 0x7fffaeab0700 (LWP 3751)]
[Thread 0x7fffaeab0700 (LWP 3751) exited]
[New Thread 0x7fffaeab0700 (LWP 3752)]
[New Thread 0x7fff9e3d0700 (LWP 3753)]
[New Thread 0x7fff8aba1700 (LWP 3754)]
[New Thread 0x7fff8a3a0700 (LWP 3755)]
[New Thread 0x7fff89b9f700 (LWP 3756)]
[New Thread 0x7fff72ffb700 (LWP 3757)]
[New Thread 0x7fff725fa700 (LWP 3758)]
[New Thread 0x7fff71df9700 (LWP 3759)]
[New Thread 0x7fff715f8700 (LWP 3760)]
[New Thread 0x7fff6affd700 (LWP 3761)]

Thread 15 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff9e3d0700 (LWP 3753)]
0x7fff8aba6256 in overlay::update(double, unsigned int*, unsigned int
const*, unsigned int const*) () from /usr/lib/frei0r-1/overlay.so
(gdb)

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