videotestsrc get SIGSEGV on 1.6.0 when ORC enabled, ARM platform

[Wang M.K.]

Hi, everyone

We recently upgrade gstreamer from 1.4.5 to gstreamer 1.6.0 and we encountered a strange problem.
Videotestsrc get SIGSEGV sometime by loop following command:
          gst-launch-1.0 videotestsrc num-buffers=100 ! video/x-raw,format=I420 ! fakesink

the backtrack is :
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Caught SIGSEGV
#0  0x76c762c0 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x76d4f854 in g_main_context_iterate (priority=<optimized out>, n_fds=2, fds=0x3a7f78, timeout=-1, context=0x3a7db0)
#2  0x76d4f854 in g_main_context_iterate (context=0x3a7db0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>)
#3  0x76d4fc0c in g_main_loop_run (loop=0x3a7c10)
#4  0x76ebea34 in gst_bus_poll (bus=bus at entry=0x2a0d48 [GstBus], events=events at entry=GST_MESSAGE_ANY, timeout=<optimized out>)
#5  0x00013d48 in event_loop (pipeline=0x3a6098 [GstPipeline], blocking=blocking at entry=1, do_progress=2124655120,
#6  0x00012e94 in main (argc=1993417836, argv=0x46f)
Spinning.  Please run 'gdb gst-launch-1.0 25103' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.

the looping time is not fix, sometime only need loop several times, sometimes need loop several minutes.

But when I disable the ORC, it works fine.

The same problem happens to videoconvert who also use ORC code. When disable ORC, it works.

My platform is ARM A9. Same command loop on PC has no problem.

Is there any bug in 1.6.0 ORC code?

Another question: how much performance loss for elements such as videoconvert/audioconvert if I disable ORC ?


Thanks
Mingke
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