Bug#622997: Debian bug 622997

[John David Anglin <dave@hiauly1.hia.nrc.ca>]

On Sun, 17 Apr 2011, James Bottomley wrote:

> On Sun, 2011-04-17 at 10:23 -0500, James Bottomley wrote:
> > It's most likely a driver module that's getting loaded which is turned
> > off in the booting configuration ... finding it isn't going to be easy,
> > though ...
> 
> Finally got a build (had to swap out -Os for -O2).

Didn't need this with the gcc 4.5.3 snapshot that I mentioned previously.

> I traced the module loads and successful inits and found it; it's
> pata_cmd64x  ... it loads but never returns from init.  I bet it's
> trying to poke into ISA space which causes the HPMC.
> 
> Removing this one module from the system allows it to boot again.

Confirm that removing this module restores boot.

This is excellent detective work.  If I might ask, how did you trace
the module loads and successful inits?

Thanks,
Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)