Re: [Ekiga-list] ekiga 3.2.6 crashes on incoming video call

[Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>]

Gerhard Stengel wrote:
> Hi,
> 
> if I get a video call from X-Lite (which uses h263 or h263-1998 video codec) ekiga always segfaults on my machine.
> Here's the output of ekiga -d 4 and the backtrace:
> 
> http://filebin.ca/kjxrcp/gdb-ekiga.txt
> 
> Looks to me like it's some problem in libavcodec.so.
> Therefore I tried to downgrade ffmpeg from svn20024 to 0.5, but that didn't help.

I confirm this crash with H263-1998 and ekiga 3.2.6.  100% reproducible
by just putting this codec the first one, and calling 500 ekiga net 

It seems to me that it is in libavcodec:
Thread 24 (Thread 0x7fffd4d34950 (LWP 12579)):
#0  0x00007fffe6062f79 in ?? () from /usr/lib64/libavcodec.so
#1  0x00007fffe5e7cfd1 in ff_epzs_motion_search () from
/usr/lib64/libavcodec.so
#2  0x00007fffe5e92ea5 in ff_estimate_p_frame_motion () from
/usr/lib64/libavcodec.so
#3  0x00007fffe5e1ad5e in ?? () from /usr/lib64/libavcodec.so

I looked at the source of ffmpeg, and ff_epzs_motion_search is a 50-line
function with many computes, so difficult to see where precisely the
crash happens.

-- 
Eugen