Re: [PATCH v3 13/25] x86/sgx: Add helpers to expose ECREATE and EINIT to KVM

Borislav Petkov
2021-04-06T09:09:14Z

On Tue, Apr 06, 2021 at 08:59:58PM +1200, Kai Huang wrote:
> OK. My thinking was that, returning negative error value basically means guest
> will be killed.

You need to define how you're going to handle invalid input from the
guest. If that guest is considered malicious, then sure, killing it
makes sense.

> For the case access_ok() fails for @secs or other user pointers, it
> seems killing guest is a little it overkill,

So don't kill it then - just don't allow it to create an enclave because
it is doing stupid crap.

--
Regards/Gruss,
Boris.