Please discard this patch.
The assumption that 16KB pages always use a 32KB stack is incorrect for
configurations without
KASAN (where it remains 16KB).
I will send a V2 patch shortly that dynamically detects the stack size
using the __start_init
_stack and __end_init_stack symbols if they are available, falling back to
page-size-based
guesses otherwise.
Sorry for the noise.