On Sun, Dec 22, 2019 at 2:25 PM <glider@xxxxxxxxxx> wrote:
>
> KMSAN instruments the code heavily, increasing register pressure and
> preventing functions from being inlined. As a result, the kernel
> requires more stack space to run.
>
> Rename KASAN_STACK_ORDER to EXTRA_STACK_ORDER and set EXTRA_STACK_ORDER
> to 2 for KMSAN builds, effectively making the stacks 4 times larger.
>
> Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
What about CONFIG_FRAME_WARN? Do you need to change that as well to get
a warning-free build? If so, what is the minimum value that you need?
Arnd
