Re: fs/btrfs/dev-replace.c:486:17: sparse: incompatible types in comparison expression (different address spaces)

Hi Fengguang,

 
Hi Stefan!

Assuming that your script performs a periodic git fetch and git reset,
and then starts compile runs on different architectures, the only
explanation that I have is that something went wrong with the git
operation in your script. It looks like some C source files have been
updated, but the header files are old. Some kind of inconsistency that
either a git reset --hard should fix, or rm -rf . and git clone to start
from the beginning.

Could you check it please?

That's definitely good suggestion! I've added the check before each make
to make sure the tree is in a clean state:

git_check_reset()
{       
        [[ $(git --no-pager diff) ]] && {
                notice "unexpected modified work tree"
                dump_stack
                git --no-pager diff
                git reset --hard
        }
}       

And could you please point me to some documentation, how this (very
useful !) service from Intel is working?

Sure (and thanks!). Here is a nice article:

KS2012: Kernel build/boot testing
https://lwn.net/Articles/514278/

Thanks,
Fengguang