Re: TPM/Verifiers testing bug?

[Daniel Kiper]

On Wed, Jan 09, 2019 at 02:16:16PM +0000, Max Tottenham wrote:
> Hi Folks
>
> I was curious about the upstream work on the verifiers framework (and
> the TPM patches). I have both a TPM 2.0 based system and a QEMU + swtpm
> setup with which to test. I compiled the head of the master branch, if I
> boot into the grub shell and run the following commands:
>
> grub> insmod verifiers
> grub> insmod tpm
> grub> normal
>
> I get a machine crash:
>
> qemu-system-x86_64: Trying to execute code outside RAM or ROM at
> 0x00000000000b0000
> This usually means one of the following happened:
>
> (1) You told QEMU to execute a kernel for the wrong machine type, and it
> crashed on startup (eg trying to run a raspberry pi kernel on a
> versatilepb QEMU machine)
> (2) You didn't give QEMU a kernel or BIOS filename at all, and QEMU
> executed a ROM full of no-op instructions until it fell off the end
> (3) Your guest kernel has a bug and crashed by jumping off into nowhere
>
> This is almost always one of the first two, so check your command line
> and that you are using the right type of kernel for this machine.
> If you think option (3) is likely then you can try debugging your guest
> with the -d debug options; in particular -d guest_errors will cause the
> log to include a dump of the guest register state at this point.
>
> Execution cannot continue; stopping here.
>
>
> Software versions:
> Qemu version:  v2.11.0           (0a0dc59)
> OVMF git tag:  edk2-stable201811 (8558838)
> swtpm git tag: tpm2-preview.v2   (f98592c)
>
>
> Running the same on real hardware also produces a crash, any thoughts?

Adding Matthew who is the author of the patch series.

Daniel