I was using kali linux in VirutalBox as normal with no problems until today.

Today when trying to run the vm I receive "Spectre V2: Spectre migitation: LFENCE not serializing, switching to generic retpoline" And thats as far as it boots.

I removed the vm, reinstalled it. Same thing.

I downloaded the already installed version for VirtualBox. Same thing.

What can I do?