Re: WARNING: CPU: 1 PID: 83 at arch/x86/kernel/cpu/sgx/main.c:446 ksgxd+0x1b7/0x1d0

[Paul Menzel]

Dear Dave,


Thank you for your reply.

Am 23.08.22 um 18:32 schrieb Dave Hansen:
> On 8/23/22 06:48, Paul Menzel wrote:
> > > > I'm suspecting either a BIOS problem.  Reinette (cc'd) also thought this
> > > > might be a case of the SGX initialization getting a bit too far along
> > > > when it should have been disabled.
> > > >
> > > > We had some bugs where we didn't stop fast enough after spitting out the
> > > > "SGX Launch Control is locked..." errors.
> >
> > Let’s hope it’s something known to you.
>
> Thanks for the extra debug info.  Unfortunately, nothing is really
> sticking out as an obvious problem.
>
> The EREMOVE return codes would be interesting to know, as well as an
> idea what the physical addresses are that fail and the _counts_ of how
> many pages get sanitized versus fail.

Is there a knob to print out this information? Or way to get this 
information using ftrace? I’d like to avoid rebuilding the Linux kernel.

> But, I don't really have a theory about what could be going on yet.

Kind regards,

Paul