in the guest, the ccp module seems not used, and it's better to add the sev-guest module

[JustPlay]

sev-guest/attestation/cryptsetup-initramfs/attestation-hook.sh

Line 21 in 62317d7

manual_add_modules ccp

i think, here it's better to add the sev-guest module

[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts# modprobe ccp
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts# lsmod | grep 'ccp'
ccp 102400 0
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts# modprobe -r ccp
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:~/sev/scripts# sev-guest-get-report -f /etc/ssh/ssh_host_rsa_key.pub -x guest_report.bin
Generating report using the following hash:
dd1d96e3e4c66ec3afb8dc90f1c57485e0ada6a65eb613d12198eacc972afb28
a569003d264ac0482ee452e045e5ffb1d1b69ca3ceab88a023791933698b036c

wrote vcek.cert
wrote ask.cert
wrote ark.cert
wrote guest_report.bin
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts# lsmod | grep 'ccp'
[guest vm|ubuntu-22.04] root@bytedance:/sev/scripts#
[guest vm|ubuntu-22.04] root@bytedance:~/sev/scripts#