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#211 VLC plugin crash Pd

0.94
closed-wont-fix
IOhannes m zmölnig
linux (16) vlc (2) crash (20)
5
2014-08-28
2013-06-06
jack
No

Hello,
Using VLC plugin crash Pd.
Removing the symlink solve this problem.
Can I help to enable this plugin in a patch ?
Configuration :
Ubuntu 13.04, Pd 0.44.3, Gem ver: 0.93.git 374f713.
++

Jack

Discussion

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2013-06-06

    could you provide a gdb backtrace?

    $ gdb --args pd -nrt ...
    [...]
    (gdb) run
    [...wait for crash...]
    (gdb) bt

    and please provide the exact version of libvlc you are using as well.

    and a description of how to reproduce the bug.

     

    Last edit: IOhannes m zmölnig 2013-06-06

    • jack

      jack - 2013-06-06

      Version of libvlc :
      $ dpkg --list | grep libvlc
      ii libvlc-dev 2.0.6-1 amd64 development files for libvlc
      ii libvlc5 2.0.6-1 amd64 multimedia player and streamer library
      ii libvlccore5 2.0.6-1 amd64 base library for VLC and its modules

      To reproduce the bug :
      $ pd
      -> crash

      ++

      Jack

       

      • IOhannes m zmölnig

        IOhannes m zmölnig - 2013-06-06

        thanks.
        Pd does not crash here (tested with the same libvlc (2.0.6-1) but on an i386 machine running debian).

         

    • jack

      jack - 2013-06-06 
      $ gdb --args pd -nrt ...
GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu
Copyright (C) 2013 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".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/local/bin/pd...(no debugging symbols found)...done.
(gdb)

      Then it stops.

      With valgrind, i get (if that can replace gdb) :

      $ valgrind pd -nrt
==17882== Memcheck, a memory error detector
==17882== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==17882== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==17882== Command: pd -nrt
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D19040: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC696: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d298 is 40 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D48AB0: _IO_default_xsputn (genops.c:476)
==17882==    by 0x5D18FFE: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC696: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d298 is 40 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D48AC2: _IO_default_xsputn (genops.c:475)
==17882==    by 0x5D18FFE: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC696: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d29a is 42 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D19040: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC6B9: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d298 is 40 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D19040: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC6D8: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d298 is 40 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
==17882== Invalid read of size 1
==17882==    at 0x5D19040: vfprintf (vfprintf.c:1655)
==17882==    by 0x5DDBA83: __vsprintf_chk (vsprintf_chk.c:84)
==17882==    by 0x5DDB9CC: __sprintf_chk (sprintf_chk.c:32)
==17882==    by 0x4DC6FD: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882==  Address 0x698d298 is 40 bytes inside a block of size 376 free'd
==17882==    at 0x4C2BA6C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==17882==    by 0x4DC677: alsa_getdevs (in /usr/local/bin/pd)
==17882==    by 0x48C8B3: sys_set_audio_settings (in /usr/local/bin/pd)
==17882==    by 0x485D44: sys_loadpreferences (in /usr/local/bin/pd)
==17882==    by 0x482438: sys_main (in /usr/local/bin/pd)
==17882==    by 0x5CEDEA4: (below main) (libc-start.c:260)
==17882== 
open: /etc/pd/gem.conf: No such file or directory
open: /home/jack/.config/pure-data/gem.conf: No such file or directory
open: ./gem.conf: No such file or directory
load plugins 'film' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_film*.so
dylib loading file '/home/jack/Gem/gem_filmGMERLIN.so'!
load plugins 'image' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_image*.so
dylib loading file '/home/jack/Gem/gem_imageJPEG.so'!
dylib loading file '/home/jack/Gem/gem_imageMAGICK.so'!
dylib loading file '/home/jack/Gem/gem_imageSGI.so'!
dylib loading file '/home/jack/Gem/gem_imageTIFF.so'!
not reloading 'image' plugins (already 4 loaded)
load plugins 'image' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_image*.so
dylib loading file '/home/jack/Gem/gem_imageJPEG.so'!
dylib loading file '/home/jack/Gem/gem_imageMAGICK.so'!
dylib loading file '/home/jack/Gem/gem_imageSGI.so'!
dylib loading file '/home/jack/Gem/gem_imageTIFF.so'!
load plugins 'model' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_model*.so
dylib loading file '/home/jack/Gem/gem_modelOBJ.so'!
load plugins 'record' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_record*.so
dylib loading file '/home/jack/Gem/gem_recordV4L.so'!
dylib loading file '/home/jack/Gem/gem_recordV4L2.so'!
load plugins 'video' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_video*.so
dylib loading file '/home/jack/Gem/gem_videoV4L.so'!
dylib loading file '/home/jack/Gem/gem_videoV4L2.so'!
dylib loading file '/home/jack/Gem/gem_videoVLC.so'!
==17882== 
==17882== HEAP SUMMARY:
==17882==     in use at exit: 4,287,292 bytes in 29,547 blocks
==17882==   total heap usage: 64,495 allocs, 34,948 frees, 32,741,190 bytes allocated
==17882== 
==17882== LEAK SUMMARY:
==17882==    definitely lost: 36,666 bytes in 59 blocks
==17882==    indirectly lost: 18,596 bytes in 527 blocks
==17882==      possibly lost: 47,402 bytes in 1,383 blocks
==17882==    still reachable: 4,184,628 bytes in 27,578 blocks
==17882==         suppressed: 0 bytes in 0 blocks
==17882== Rerun with --leak-check=full to see details of leaked memory
==17882== 
==17882== For counts of detected and suppressed errors, rerun with: -v
==17882== ERROR SUMMARY: 216 errors from 6 contexts (suppressed: 2 from 2)
Erreur de segmentation (core dumped)

      ++

      Jack

       

      Last edit: IOhannes m zmölnig 2013-06-06

      • IOhannes m zmölnig

        IOhannes m zmölnig - 2013-06-06

        thanks.

        my initial thought that the version of Gem you are running does not match the version of Gem the videoVLC plugin was compiled with (though it should detect that), seems to be highly unlikely given that setup.

        anyhow, valgrind is not a replacement for gdb, they are complementing each other.
        so i'd still like to have a gdb backtrace.

        the trick (as outlined in the original post) is, that gdb is interactive. after starting it, you have to manually run the program (with the run command) and after it crashed, you have to manually ask it for a backtrace (with the bt command)
        once you are done, you can exit it with the quit command. e.g. check the debian help for more information.

        and i forgot: please add the flags -stderr -verbose -verbose when running Pd (in addition to -rt), it might reveal something that gets lost otherwise.

         

        • jack

          jack - 2013-06-06

          OK, here the output of gdb (I use -nrt and not -rt) :

          $ gdb --args pd -nrt -stderr -verbose -verbose ...
GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu
Copyright (C) 2013 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".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/local/bin/pd...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/local/bin/pd -nrt -stderr -verbose -verbose ...
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
input channels = 2, output channels = 2
Pd-0.44.3 ("") compiled 11:55:24 Apr 29 2013
port 5400
TCL_LIBRARY="/usr/local/lib/pd/lib/tcl/library" TK_LIBRARY="/usr/local/lib/pd/lib/tk/library"   wish "/usr/local/lib/pd/tcl//pd-gui.tcl" 5400
Waiting for connection request... 
... connected
opened 0 MIDI input device(s) and 0 MIDI output device(s).
input channels = 2, output channels = 2
audio buffer set to 25
opened input device name hw:0
configuring sound input...
Sample width set to 4 bytes
configuring sound output...
Sample width set to 4 bytes
tried ./Gem.l_ia64 and failed
tried /home/jack/Gem/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/moocow/pdstring/src/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/zexy/src/.libs/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/iem/iemnet/Gem.l_ia64 and failed
tried /home/jack/Documents/PureData/PDabstractions/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/mapping/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/pmpd/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/iem/iem_tab/Gem.l_ia64 and failed
tried /home/jack/pure-data/abstractions/footils/list-abs/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/boids/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/ggee/control/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/ggee/filters/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/vbap/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/loaders/pdlua/src/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/pix_opencv/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/mrpeach/osc/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/iem/comport/comport/Gem.l_ia64 and failed
tried /home/jack/pure-data/trunk/externals/extra/Gem.l_ia64 and failed
tried /home/jack/Gem/extra/pix_fiducialtrack/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/zexy/abs/Gem.l_ia64 and failed
tried /home/jack/pure-data/externals/share_mem/Gem.l_ia64 and failed
tried /home/jack/pd-externals/Gem.l_ia64 and failed
tried /usr/local/lib/pd-externals/Gem.l_ia64 and failed
tried /usr/local/lib/pd/extra/Gem.l_ia64 and failed
tried ./Gem.pd_linux and failed
tried /home/jack/Gem/Gem.pd_linux and succeeded
verbose(5): not registering [pix_filmQT] again...
GEM: Graphics Environment for Multimedia
verbose(2): GEM: ver: 0.93.git 374f713
verbose(2): GEM: compiled: Apr 30 2013
verbose(2): GEM: maintained by IOhannes m zmoelnig
verbose(2): GEM: Authors :  Mark Danks (original version)
verbose(2): GEM:        Chris Clepper
verbose(2): GEM:        Cyrille Henry
verbose(2): GEM:        IOhannes m zmoelnig
verbose(2): GEM: with help by Guenter Geiger, Daniel Heckenberg, James Tittle, Hans-Christoph Steiner, et al.
verbose(2): GEM: found a bug? miss a feature? please report it:
verbose(2): GEM:    homepage http://gem.iem.at/
verbose(2): GEM:    bug-tracker http://sourceforge.net/projects/pd-gem/
verbose(2): GEM:    mailing-list http://lists.puredata.info/listinfo/gem-dev/
open: /etc/pd/gem.conf: No such file or directory
open: /home/jack/.config/pure-data/gem.conf: No such file or directory
open: ./gem.conf: No such file or directory
tried ./Gem-meta.pd and failed
tried /home/jack/Gem/Gem-meta.pd and succeeded
verbose(2): GEM: compiled for MMX/SSE2 architecture
verbose(2): GEM: using SSE2 optimization
verbose(2): GEM: detected 8 CPUs
load plugins 'film' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_film*.so
dylib loading file '/home/jack/Gem/gem_filmGMERLIN.so'!
verbose(5): backend 'DirectShow' unavailable
verbose(5): backend 'AVI' unavailable
verbose(5): trying to add 'gmerlin' as backend
verbose(5): added backend#0 'gmerlin'
verbose(5): backend 'QuickTime' unavailable
verbose(5): backend 'quicktime4linux' unavailable
verbose(5): backend 'MPEG3' unavailable
verbose(5): backend 'aviplay' unavailable
verbose(5): backend 'MPEG1' unavailable
verbose(5): trying to add 'gmerlin' as backend
load plugins 'image' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_image*.so
dylib loading file '/home/jack/Gem/gem_imageJPEG.so'!
dylib loading file '/home/jack/Gem/gem_imageMAGICK.so'!
dylib loading file '/home/jack/Gem/gem_imageSGI.so'!
dylib loading file '/home/jack/Gem/gem_imageTIFF.so'!
verbose(5): trying to add 'magick' as backend
verbose(5): added backend#0 'magick' @ 0x7ca090
verbose(5): trying to add 'SGI' as backend
verbose(5): added backend#1 'SGI' @ 0x7ca040
verbose(5): trying to add 'jpeg' as backend
verbose(5): added backend#2 'jpeg' @ 0xac9b10
verbose(5): trying to add 'magick' as backend
verbose(5): trying to add 'tiff' as backend
verbose(5): added backend#3 'tiff' @ 0xac9b70
GEM: image loading support: magick SGI jpeg tiff
not reloading 'image' plugins (already 4 loaded)
verbose(5): trying to add 'magick' as backend
verbose(5): added backend#0 'magick' @ 0xad4840
verbose(5): trying to add 'SGI' as backend
verbose(5): added backend#1 'SGI' @ 0x7a14a0
verbose(5): trying to add 'jpeg' as backend
verbose(5): added backend#2 'jpeg' @ 0xad4930
verbose(5): trying to add 'magick' as backend
verbose(5): trying to add 'tiff' as backend
verbose(5): added backend#3 'tiff' @ 0xad4bb0
load plugins 'image' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_image*.so
dylib loading file '/home/jack/Gem/gem_imageJPEG.so'!
dylib loading file '/home/jack/Gem/gem_imageMAGICK.so'!
dylib loading file '/home/jack/Gem/gem_imageSGI.so'!
dylib loading file '/home/jack/Gem/gem_imageTIFF.so'!
verbose(5): trying to add 'jpeg' as backend
verbose(5): added backend#0 'jpeg' @ 0x8b9e68
verbose(5): trying to add 'magick' as backend
verbose(5): added backend#1 'magick' @ 0x8b9b98
verbose(5): trying to add 'tiff' as backend
verbose(5): added backend#2 'tiff' @ 0x8b9ea8
GEM: image saving support: jpeg magick tiff
load plugins 'model' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_model*.so
dylib loading file '/home/jack/Gem/gem_modelOBJ.so'!
verbose(5): trying to add 'OBJ' as backend
verbose(5): added backend#0 'OBJ'
load plugins 'record' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_record*.so
dylib loading file '/home/jack/Gem/gem_recordV4L.so'!
dylib loading file '/home/jack/Gem/gem_recordV4L2.so'!
verbose(5): backend 'QT' unavailable
verbose(5): backend 'QT4L' unavailable
verbose(5): trying to add 'V4L' as backend
verbose(5): added backend#0 'V4L'
verbose(5): trying to add 'V4L2' as backend
verbose(5): added backend#1 'V4L2'
load plugins 'video' in '/home/jack/Gem/'
pattern : /home/jack/Gem/gem_video*.so
dylib loading file '/home/jack/Gem/gem_videoV4L.so'!
dylib loading file '/home/jack/Gem/gem_videoV4L2.so'!
dylib loading file '/home/jack/Gem/gem_videoVLC.so'!
verbose(5): Gem::video: trying to add 'v4l2' as backend
verbose(5): Gem::video: added backend#0 'v4l2'
verbose(5): Gem::video: trying to add 'v4l' as backend
verbose(5): Gem::video: added backend#1 'v4l'
verbose(5): Gem::video: backend 'dv4l' unavailable
verbose(5): Gem::video: trying to add 'v4l' as backend
verbose(5): Gem::video: trying to add 'v4l2' as backend
verbose(5): Gem::video: trying to add 'vlc' as backend

Program received signal SIGSEGV, Segmentation fault.
__strcmp_sse42 () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:164
164 ../sysdeps/x86_64/multiarch/strcmp-sse42.S: Aucun fichier ou dossier de ce type.
(gdb) bt
#0  __strcmp_sse42 () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:164
#1  0x00007fffe57b2f99 in g_str_equal () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffe57b26cf in g_hash_table_lookup () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fffe57d1e5f in g_quark_from_static_string () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fffe08c66ec in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007ffff7de9876 in call_init (l=l@entry=0xbc2830, argc=argc@entry=6, argv=argv@entry=0x7fffffffe198, 
    env=env@entry=0x7fffffffe1d0) at dl-init.c:84
#6  0x00007ffff7de9930 in call_init (env=<optimized out>, argv=<optimized out>, argc=<optimized out>, l=0xbc2830) at dl-init.c:55
#7  _dl_init (main_map=main_map@entry=0xbb9150, argc=6, argv=0x7fffffffe198, env=0x7fffffffe1d0) at dl-init.c:133
#8  0x00007ffff7dedfdf in dl_open_worker (a=a@entry=0x7fffffffc1b8) at dl-open.c:566
#9  0x00007ffff7de9706 in _dl_catch_error (objname=objname@entry=0x7fffffffc1a8, errstring=errstring@entry=0x7fffffffc1b0, 
    mallocedp=mallocedp@entry=0x7fffffffc1a0, operate=operate@entry=0x7ffff7dedc00 <dl_open_worker>, args=args@entry=0x7fffffffc1b8)
    at dl-error.c:177
#10 0x00007ffff7ded809 in _dl_open (file=0xbb4590 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", mode=-2147483647, 
    caller_dlopen=<optimized out>, nsid=-2, argc=6, argv=0x7fffffffe198, env=0x7fffffffe1d0) at dl-open.c:656
#11 0x00007ffff6f43026 in dlopen_doit (a=a@entry=0x7fffffffc3c0) at dlopen.c:66
#12 0x00007ffff7de9706 in _dl_catch_error (objname=0x740e30, errstring=0x740e38, mallocedp=0x740e28, 
    operate=0x7ffff6f42fc0 <dlopen_doit>, args=0x7fffffffc3c0) at dl-error.c:177
#13 0x00007ffff6f4363c in _dlerror_run (operate=operate@entry=0x7ffff6f42fc0 <dlopen_doit>, args=args@entry=0x7fffffffc3c0)
    at dlerror.c:163
#14 0x00007ffff6f430c1 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#15 0x00007fffe333313d in ?? () from /usr/lib/libvlccore.so.5
#16 0x00007fffe331a1c8 in ?? () from /usr/lib/libvlccore.so.5
---Type <return> to continue, or q <return> to quit---
#17 0x00007fffe331a49b in ?? () from /usr/lib/libvlccore.so.5
#18 0x00007fffe331a68d in ?? () from /usr/lib/libvlccore.so.5
#19 0x00007fffe331a7b0 in ?? () from /usr/lib/libvlccore.so.5
#20 0x00007fffe331ae3d in ?? () from /usr/lib/libvlccore.so.5
#21 0x00007fffe32aff0b in libvlc_InternalInit () from /usr/lib/libvlccore.so.5
#22 0x00007fffe35815b5 in libvlc_new () from /usr/lib/libvlc.so.5
#23 0x00007fffe3799aad in gem::plugins::videoVLC::videoVLC (this=0x7d33a0) at videoVLC.cpp:56
#24 0x00007fffe3799bb3 in gem::PluginFactoryRegistrar::allocator<gem::plugins::videoVLC, gem::plugins::video> ()
    at ../../src/plugins/PluginFactoryTimple.h:134
#25 0x00007ffff38f307a in doGetInstance (id=..., this=<optimized out>) at ../../src/plugins/PluginFactoryTimple.h:70
#26 getInstance (id=...) at ../../src/plugins/PluginFactoryTimple.h:96
#27 addPlugin (ID=..., available=<error reading variable: access outside bounds of object referenced via synthetic pointer>, 
    this=0x7cf4a0) at video.cpp:80
#28 gem::plugins::videoMeta::videoMeta (this=0x7cf4a0) at video.cpp:111
#29 0x00007ffff38ea9d3 in gem::plugins::video::getInstance () at video.cpp:313
#30 0x00007ffff38bdd9d in gem::plugins::init () at PluginFactory.cpp:175
#31 0x0000000000488bc3 in sys_do_load_lib ()
#32 0x0000000000488f48 in sys_load_lib ()
#33 0x0000000000480cb3 in glob_initfromgui ()
#34 0x000000000046f5d9 in pd_typedmess ()
#35 0x000000000047995b in binbuf_eval ()
#36 0x0000000000483e13 in socketreceiver_read ()
#37 0x00000000004828ac in sys_domicrosleep.constprop.3 ()
---Type <return> to continue, or q <return> to quit---
#38 0x000000000047d89d in m_mainloop ()
#39 0x00007ffff6b9bea5 in __libc_start_main (main=0x411cf0 <main>, argc=6, ubp_av=0x7fffffffe198, init=<optimized out>, 
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe188) at libc-start.c:260
#40 0x0000000000411d21 in _start ()

          ++

          Jack

           

          Last edit: IOhannes m zmölnig 2013-06-06

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2013-06-06

    btw, doing a quick google for libvlc_new segfault (libvlc_new is the function that triggers the segfault) gives me a number of results, all related to C++-code. it might be a problem with libvlc (or a common compiler/linker issue that Gem triggers as well). maybe you can dig more info out of those search results.

     

    • jack

      jack - 2013-06-07

      Hello,

      I do the following to stop the crash :
      $ sudo mv /usr/lib/vlc/plugins/gui/libqt4_plugin.so /usr/lib/vlc/plugins/gui/libqt4_plugin.so_back
      $ sudo mv /usr/lib/vlc/plugins/notify/libnotify_plugin.so /usr/lib/vlc/plugins/notify/libnotify_plugin.so_back

      I don't know if there will be consequences with the VLC plugin, but now i get :
      [pix_video]: backend #0='v4l2' : v4l2 analog
      [pix_video]: backend #1='v4l' : v4l analog
      [pix_video]: backend #2='dc1394' : dc1394 iidc
      [pix_video]: backend #3='vlc' : vlc

      And when i send the message [device screen://( to [pix_video], is is working fine :)
      ++

      Jack

       

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2013-06-08

    i don't know either, but it might hint at a bug within VLC (or some linker problem due to a special config within VLC). it would be great if you forwarded that bug to the VLC devs.

     

    • jack

      jack - 2013-08-03

      The last version of libvlc (2.0.8) solved all problems :

      $ dpkg --list | grep libvlc
      ii libvlc-dev 2.0.8-0ubuntu0.13.04.1 amd64 development files for libvlc
      ii libvlc5 2.0.8-0ubuntu0.13.04.1 amd64 multimedia player and streamer library
      ii libvlccore5 2.0.8-0ubuntu0.13.04.1 amd64 base library for VLC and its modules
      ++

      Jack

       

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2013-08-05

    closing, as the problem is not wih Gem but with vlc (and fixable by upgrading)

     

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2013-08-05
    • status: open --> closed-wont-fix
    • assigned_to: IOhannes m zmölnig
     

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2014-07-08
    • labels: --> linux, vlc, crash
    • Group: linux --> 0.93-git
     

  • IOhannes m zmölnig

    IOhannes m zmölnig - 2014-08-28
    • Release: 0.93-git --> 0.94
     

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