This looks like a build-time bug in both overlayroot and crypt-setup.
overlayroot/hooks/overlayroot does:
egrep -qswo "aes" /proc/cpuinfo && manual_add_modules aesni_intel || true
And cryptsetup's /usr/share/initramfs-tools/hooks/cryptroot does:
# Load hardware aes module
if cpu_has_aesni; then
echo aesni
fi
and
cpu_has_aesni() {
return $(grep -q "^flags\s*:\s*.*aes" /proc/cpuinfo)
}
Seems like both of these should not be dynamic based on host cpu support, but
constant built in on module availability in the kernel.
** Also affects: cryptsetup (Ubuntu)
Importance: Undecided
Status: New
** Changed in: cryptsetup (Ubuntu)
Status: New => Confirmed
** Changed in: cryptsetup (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1267225
Title:
initramfs in cloud-images does not contain crypt modules
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