Description of problem:
Making /proc/kallsyms readable only for root by default makes it slightly harder for attackers to write generic kernel exploits by removing one source of knowledge where things are in the kernel.
This was originally committed in the kernel in upstream commit 59365d13 but was later reverted in 33e0d57f. It's unlikely that the upstream kernel would accept this patch again, so what we could do at our side is to "chmod -r /proc/kallsyms" in our bootup scripts. And make sure it doesn't break anything.
Do it in the kernel, or don't do it. Doing it in initscripts is a kludge.