Arch Linux

Description:
I have the following VFS setup:

lvm2
luks
md
block

Up to kernel 5.7, my initramfs would build the md devices, decrypt the root and build the volumes.
Sine kernel 5.8 that doesn't work anymore.
I tried with mkinitcpio and with dracut. Both don't work anymore. I use the following mkinitcpio hooks: HOOKS=(base udev autodetect modconf block sleep mdadm_udev encrypt lvm2 filesystems keyboard fsck)

Going back to kernel 5.7 makes the initramfs boot again.

When I'm dropped into an emergency shell in mkinitcpio, I can boot by manually executing:

# cryptsetup luksOpen /dev/md1 crypt
# lvm vgchange -ay
# mount /dev/vg/arch /new_root
# exit

So there may be a problem with availability of devices early on.

dracut doesn't offer me an emergency shell with rd.shell=1 :( but it returns the following errors:
[ 19.310528] encrypted_key: failed to alloc_cipher (-2)
[ 19.373443] encrypted_key: failed to alloc_cipher (-2)
[ 19.453501] encrypted_key: failed to alloc_cipher (-2)
[ 19.516595] device-mapper: table: 254:0: crypt: unknown target type
[ 19.521050] encrypted_key: failed to alloc_cipher (-2)
[ 19.573377] encrypted_key: failed to alloc_cipher (-2)
[FAILED] Failed to start Cryptography Setup for luks-[...]

which indicates to me a missing cipher (maybe a missing module?)

When researching the issue, I encountered this link

https://github.com/clearlinux-pkgs/linux-current/commit/72fa1696da50c0ba5ca1437e6582612fd5bf7985

which seems to fix a similar issue according to the commit message.