Re: 2.5.31: modules don't work at all

[ryan.flanigan@intel.com (Flanigan, Ryan)]

>>>>> "Adam" == Adam J Richter <adam@yggdrasil.com> writes:

    Adam> 	Ryan, thanks for suggesting that, as it would have taken
    Adam> me a long time to narrow it down that far!

np. 

    Adam> 	It would help avoid duplication of effort if you could
    Adam> indicate how along you are with this problem.  If you or

just a "test" build w/ PREEMPT enabled is when i noticed it. it
was the only thing i changed in the .config. so ... 
i just wanted to isolate it a bit more before posting.

    Adam> someone else has nailed the problem and is preparing a
    Adam> patch, then there is no point in anyone else trying to
    Adam> duplicate that debugging effort.  On the other hand, if you

i have only put in a few hours on the problem thus far, and plan
to continue tonight by looking to the  "hold atomic kmaps across 
generic_file_read" and "Forward port of get_user_pages() change 
from 2.4" patch by Andrew Morton <akpm@zip.com.au>.  thats my best 
guess thus far.  others might think differently (and they're probably 
right).

    Adam> just noticed CONFIG_PREEMPT was the difference between your
    Adam> configuration and that of someone else who was running
    Adam> 2.5.31 successfully and are not actively debugging the
    Adam> problem, then I'll try to poke at it some more.

please do. im still _slow_ when dealing with these things.

    Adam> 	I already know that the error that trips insmod occurs at
    Adam> in modules.c, line 831, when qm_symbols gets an error from
    Adam> copy_to_user():

agreed and thanks for the info!