Re: Something broke cdu31a driver between 2.0.33 and .33

Yann Dirson (ydirson@a2points.com)
Thu, 4 Jun 1998 23:35:42 +0200 (CEST)


You'll have noted that the subject was meant to be "between 2.0.30 and
.33" :(

Erik Andersen writes:
> On Wed, 3 Jun 1998, Yann Dirson wrote:
>
> [---------------snip-------------------]
> >
> > Note that I also found out it was possible to rmmod the cdu31a module
> > before cdplay has exited (ie, when it is looping), and that causes a
> > kernel OOPS, as well as cdplay segfaulting.
> >
> > --
> > Yann Dirson <ydirson@a2points.com>
>
> Are you sure you saw this in 2.0.x?

Yes. It does occur with 2.0.33. I just tried Alan's 2.0.34pre16, and
the problem's still here.

> I wasn't aware that the 2.0.x version of cdu31a (which doesn't use the
> uniform cdrom driver) also had this problem (but then I havn't run 2.0.x
> for about a year and I don't have one of these drives...). Could you
> confirm the kernel version number for this part of your report?

I also tried 2.1.99, with seems to have the same problem. In
addition, whereas in 2.0.x manually ejecting the CD does interrupt
cdplay (which ignores Ctrl-C), in 2.1.99 it causes a "Ugh at
c01119f8", which is in do_page_fault according to System.map:

c0111990 T do_page_fault
c0111da0 t remap_area_pages

Just ask for any other info [note that I still don't know what
readable info to get out of the Oops' data].

Regards,

-- 
Yann Dirson  <ydirson@a2points.com>      | Stop making M$-Bill richer & richer,
alt-email:     <dirson@univ-mlv.fr>      |     support Debian GNU/Linux:
debian-email:   <dirson@debian.org>      |         more powerful, more stable !
http://www.a2points.com/homepage/3475232 | Check <http://www.debian.org/>

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