FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit d5422bd64ebb5b03bcf148f5b58c29a9ad7e990f ("x86: also use debug_pagealloc_enabled() for free_init_pages")


[    9.917676] kasan: WARNING: KASAN doesn't support memory hot-add
[    9.918444] kasan: Memory hot-add will be disabled


Thanks,
Ying Huang