/usr/lib/klibc/include/asm is in libklibc-dev 2.0.4-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/klibc/include/../../../include/x86_64-linux-gnu/asm
/usr/lib/klibc/include/../../../include/x86_64-linux-gnu/asm