[gentoo-user] Kernel doesn't accept any initramfs

I've somehow built a kernel that won't accept any initramfs. To
elaborate, it hangs in shell in dracut and panicks with a minimal
initramfs as if it rejects the initramfs entirely and tries to boot an
lvm volume, which of course, fails.

Kernel config:
http://sprunge.us/tqz3BM

The minimal initramfs is described by the file listing
http://sprunge.us/GQVbqc
and init script http://sprunge.us/YHWY9Z , though this script is of
limited use since even with `exec sh` in the first non-comment line,
the kernel doesn't follow through.

Thoughts?

-- AV