I have been using cryptsetup to encrypt disks on Ubuntu Touch for some years without a problem, after each update I simple need to run the following to install cryptsetup again:

sudo -i
mount -o rw,remount /
apt-get update
apt-get install cryptsetup
mount -o ro,remount /

I have upgraded a OnePlusOne to 16.04 OTA-5 and decrypted disks without issues, however on a mako, I can no longer decrypt disks:

cryptsetup luksOpen phablet.img phablet
Enter passphrase for phablet.img: 
device-mapper: reload ioctl on  failed: No such file or directory
Failed to setup dm-crypt key mapping for device phablet.img.
Check that kernel supports aes-xts-plain64 cipher (check syslog for more info).

Checking the kernel and ciphers (as suggested here) on the mako:

uname -a
 Linux ubuntu-phablet 3.4.0+ #4 SMP PREEMPT Wed Oct 10 19:51:07 UTC 2018 armv7l armv7l armv7l GNU/Linux
grep name.*aes /proc/crypto|cut -d : -f 2
 cbc(aes)
 aes

And on the OnePlusOne:

uname -a
 Linux ubuntu-phablet 3.4.0-Sultan-CAF #1 SMP PREEMPT Thu Oct 11 23:00:58 CEST 2018 armv7l armv7l armv7l GNU/Linux
grep name.*aes /proc/crypto|cut -d : -f 2
 __xts-aes-neonbs
 xts(aes)
 cbc(aes)
 rfc4309(ccm(aes))
 ccm(aes)
 authenc(hmac(sha1),cbc(aes))
 qcom-xts(aes)
 qcom-ctr(aes)
 qcom-cbc(aes)
 qcom-ecb(aes)
 aes
 xts(aes)
 ctr(aes)
 cbc(aes)
 __xts-aes-neonbs
 __ctr-aes-neonbs
 __cbc-aes-neonbs
 aes

So was a decision made to leave some crypto modules out of the mako kernel? Anyone know what happened here?