On Thu, Mar 30, 2017 at 12:38:15PM -0700, Kees Cook wrote: > Great work! I think this will need some further changes, though, since > it doesn't look to me like this would pass LKDTM's tests if it was > built as a module. (This is missing from my ARM attempt too... I > haven't figured out how to set the domain on the kernel modules...)
You're not going to be able to do it very easily. The only way I can think of achieving it would be to split the module area into one chunk for text, one chunk for write-rare and one chunk for data. I still think that using domains is a mistake for this - it's a good solution for things that are contiguous and big (like userspace), but not for small amounts of data (like module sections.) -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
