Thus wrote Karol Kozimor:
> > It appears that the asus_acpi driver has the same issue, as it was 
> > derived from mine.
> While I think it doesn't oops (at least I can't reproduce it), it doesn't
> work either when CONFIG_X86_4G=y. I'll have a fix later on.

The attached patches introduce copy_from_user() where appropriate. I only
tested this code with 2.6.5-rc1-mm2, where it worked both with and without
CONFIG_X86_4G. For 2.4, compile-test only.

Note: I'm not sure if the 2.4 version is needed, there's no CONFIG_X86_4G
there. Does a highmem-enabled kernel need such a conversion? I can't really
test those changes reliably having only 256 MB RAM, but at least those
changes don't seem to do any harm.

Please apply if you feel so.
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org