[Motmot] Segmentation faults

[Alice Robie]

I also got a segmentation fault tonight from the firewire camera running
fview and flytrax for <40 minutes. This is the first time this has ever
happened to me in the middle of running experiments.
the last error in the log is:
ERROR trying to close camera: src/cam_iface_dc1394.c (909): libdc1394 err
-12: RAW1394 failure
but the time it was last modified is right when I was starting the program.
Alice

On Thu, Mar 26, 2009 at 4:23 PM, Andrew Straw <astraw at caltech.edu> wrote:

> John Schneider wrote:
> > I get the same output from the backtrace for all three computers:
> > ...
> > (no debugging symbols found)
> > [New Thread 0xaf6b8b90 (LWP 9591)]
> > [New Thread 0xaeeb7b90 (LWP 9592)]
> > (no debugging symbols found)
> > [New Thread 0xae656b90 (LWP 9593)]
> > (no debugging symbols found)
> > [New Thread 0xade55b90 (LWP 9594)]
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > [Switching to Thread 0xae656b90 (LWP 9593)]
> > 0x00000000 in ?? ()
> > (gdb) bt
> > #0  0x00000000 in ?? ()
> > #1  0xaf78860c in raw1394_loop_iterate () from /usr/lib/libraw1394.so.8
> > #2  0xaf789348 in raw1394_write () from /usr/lib/libraw1394.so.8
> > #3  0xaf7a7ff7 in platform_camera_write () from /usr/lib/libdc1394.so.22
> > #4  0xaf79bdb9 in dc1394_set_control_registers () from
> /usr/lib/libdc1394.so.22
> > #5  0xaf79727e in dc1394_video_set_transmission ()
> >    from /usr/lib/libdc1394.so.22
> > #6  0xaf930856 in CCdc1394_close () from /usr/lib/libcam_iface_dc1394.so
> > #7  0xaf931522 in delete_CCdc1394 () from /usr/lib/libcam_iface_dc1394.so
> > #8  0xb7bbe0b1 in delete_CamContext () from
> /usr/lib/libcam_iface_unity.so
>
> Hmm, is this occurring with the same characteristics as the bug you
> wrote about earlier today? If this was happening right at camera
> initialization, I'd say to reduce the number of buffers and see if that
> helps. (Also re-plug the cameras and perhaps even reboot.) In fact, I'd
> still give that a try.
>
> But if this isn't right at the beginning of acquisition, I'm at a loss.
> It looks like the software is in the middle of attempting to close the
> camera on purpose. Any idea why that would be?
>
> -Andrew
>
> --
> Andrew D. Straw, Ph.D.
> California Institute of Technology
> http://www.its.caltech.edu/~astraw/<http://www.its.caltech.edu/%7Eastraw/>
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> Motmot at code.astraw.com
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>
>


-- 
Alice Anne Robie
California Institute of Technology
MC 138-78
1200 E. California Blvd.
Pasadena CA, 91125
(626) 395 4387
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