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Bug 542643 - gif crashing gstreamer
gif crashing gstreamer
Status: RESOLVED NOTGNOME
Product: GStreamer
Classification: Platform
Component: dont know
git master
Other Linux
: Normal normal
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2008-07-12 11:03 UTC by Hanno Böck
Modified: 2008-07-13 14:27 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
lol-giftopnm.gif (7.08 KB, image/gif)
2008-07-12 11:07 UTC, Hanno Böck 		Details

Description Hanno Böck 2008-07-12 11:03:18 UTC 
A gif produced by sam hocevar with zzuf crashes gstreamer (lol-giftopnm.gif, I'll attach it to this bug).

hanno@laverne /data/zzuf $ gst-launch-0.10 filesrc location=lol-giftopnm.gif ! decodebin
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Caught SIGSEGV accessing address 0x28981816

+ Trace 202624

  • #0 __kernel_vsyscall
  • #1 poll
    from /lib/libc.so.6
  • #2 ??
    from /usr/lib/libglib-2.0.so.0
  • #3 ??
  • #4 ??
  • #5 ??
  • #6 ??
  • #7 ??
  • #8 pthread_mutex_lock
    from /lib/libpthread.so.0 






Comment 1


Hanno Böck





          2008-07-12 11:07:32 UTC
        



Created attachment 114432 [details]
lol-giftopnm.gif






Comment 2


Sebastian Dröge (slomo)





          2008-07-12 17:59:26 UTC
        



Hi, this only happens with the gif decoder from ffmpeg (ffdemux_gif) but not with the gdkpixbuf element (which just errors out because of a broken file). This is a bug in ffmpeg, please file it again at

http://roundup.mplayerhq.hu/roundup/ffmpeg/



Backtrace for reference:

(gdb) 




+
Trace
    202656






    

  • 
#0
GLZWDecode

    
                at libavformat/gifdec.c
                  line
                  254

    

    • 

  • 
#1
gif_read_packet

    
                at libavformat/gifdec.c
                  line
                  345

    

    • 

  • 
#2
av_read_frame_internal

    
                at libavformat/utils.c
                  line
                  503

    

    • 

  • 
#3
av_find_stream_info

    
                at libavformat/utils.c
                  line
                  1952

    

    • 

  • 
#4
gst_ffmpeg_av_find_stream_info

    
                at gstffmpeg.c
                  line
                  76

    

    • 

  • 
#5
gst_ffmpegdemux_loop

    
                at gstffmpegdemux.c
                  line
                  1060

    

    • 

  • 
#6
gst_task_func

    
                at gsttask.c
                  line
                  192

    

    • 

  • 
#7
g_thread_pool_thread_proxy

    
                at /tmp/buildd/glib2.0-2.17.3/glib/gthreadpool.c
                  line
                  265

    

    • 

  • 
#8
g_thread_create_proxy

    
                at /tmp/buildd/glib2.0-2.17.3/glib/gthread.c
                  line
                  635

    

    • 

  • 
#9
start_thread

    
                from
                /lib/i686/cmov/libpthread.so.0

    

    • 

  • 
#10
clone

    
                from
                /lib/i686/cmov/libc.so.6

    

    • 













Comment 3


Hanno Böck





          2008-07-12 18:10:37 UTC
        



Couldn't reproduce the issue within plain ffmpeg.






Comment 4


Sebastian Dröge (slomo)





          2008-07-13 09:57:21 UTC
        



ffmpeg/ffplay is using libavcodec/gif and not libavformat/gif (IIRC). The former can only show a single picture while the latter handles gif animations.






Comment 5


Hanno Böck





          2008-07-13 14:10:57 UTC
        



So
https://roundup.mplayerhq.hu/roundup/ffmpeg/issue530

We have ffmpeg claiming it's gstreamers fault and gstreamer claiming it's ffmpegs fault.






Comment 6


Sebastian Dröge (slomo)





          2008-07-13 14:27:39 UTC
        



See my answer in that bug *sigh*