Description:

I wanted to setup a clean full encryption for my system. Creating 2 partitions that each of'em separated for sake boot processes (/ & /boot).
Before anything, I have upgraded my USB, which holds all the required installation with pacman -Syu after that, I decide to encrypt my second partition (/) with this command:

cryptsetup -c serpent-xts-plain64 -s 512 -h sha512 --iter-time 5000 --use-random luksFormat /dev/sda2

Sadly, I got several errors after confirming the passphrase.

However, I didn't have any type of errors BEFORE I do the upgrading (pacman -Su) which is really strange.
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Additional info:
* package version(s): cryptsetup 1.6.0
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Steps to reproduce:

# pacman -Syu (got some updates for pacman and other packages and I have installed all of'em)
# cryptsetup -c serpent-xts-plain64 -s 512 -h sha512 --iter-time 5000 --use-random luksFormat /dev/sda2

Error:

[ 1455.751731] device-mapper: table: 254:1: crypt: unknown target type
device-mapper: reload ioctl on temporary-cryptsetup-3968 failed: Invalid agrument
Failed to setup dm-crypt key mapping for device /dev/sda2.
Check that kernel supports serpent-xts-plain64 cipher
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NOTE: I have tried aes one but with same results above.
NOTE: # modprobe dm_mod is not required (already running).