Re: xsrc/58133: X server crashes; radeon 5450; modesetting

[Rhialto <rhialto%falu.nl@localhost>]

I had some more crashes with irregular intervals. Two of them didn't
leave a core dump; /var/log/messages listed errno 27 (EFBIG).
The 4 core dumps I have are available for debugging.

I tried running with a locally modified version of libdrm_radeon.so.0.0
with logging added to bo_map() and some nearby functions in
xsrc/external/mit/libdrm/dist/radeon/radeon_bo_gem.c (printf to stderr)
but I don't see the expected output anywhere. I'm not sure if I'm not
looking in the right place, the output is getting lost, or X simply
never gets there (in which case I don't understand why).