pinephone pro: EMMC FDE "invalid passphrase" when another encrypted sd card is inserted

Describe your issue

When my root partition get mounted then dmcrypt got access to the key file to decrypt the sd card. Fstab then mount the mapped partition.

$ lsblk
NAME         MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
mmcblk0      179:0    0 115.2G  0 disk  
├─mmcblk0p1  179:1    0   243M  0 part  /boot
└─mmcblk0p2  179:2    0   115G  0 part  
mmcblk0boot0 179:256  0     4M  1 disk  
mmcblk0boot1 179:512  0     4M  1 disk  
mmcblk1      179:768  0 119.1G  0 disk  
└─crypt-sd   254:1    0 119.1G  0 crypt /mnt/sd

# /etc/fstab
# This file is *not* used to mount / or /boot.
# More information: https://postmarketos.org/fstab

/dev/mapper/crypt-sd  /mnt/sd   ext4 defaults,nofail           0 2

# /etc/conf.d/dmcrypt
…

target=crypt-sd
source='/dev/mmcblk1'
key='/etc/sd-keyfile'

$ doas blkid
doas (stacy@cyan-bottle) password: 
/dev/mapper/crypt-sd: UUID="0694c4fe-7896-4279-8833-3d412626ec01" BLOCK_SIZE="4096" TYPE="ext4"
/dev/mmcblk0p1: LABEL_FATBOOT="pmOS_boot" LABEL="pmOS_boot" UUID="E312-9FAA" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="primary" PARTUUID="e8dbbcf5-d041-4fa3-ad95-207e227e38e3"
/dev/mmcblk0p2: UUID="5b8136bf-0e94-4e53-89db-b845269a7780" TYPE="crypto_LUKS" PARTLABEL="primary" PARTUUID="77ec45db-e626-42c7-845f-8a89861a5ca9"
/dev/dm-0: LABEL="pmOS_root" UUID="89639c7a-60c2-423f-b0fd-1ef973fa44ff" BLOCK_SIZE="4096" TYPE="ext4"
/dev/mmcblk1: UUID="d86cab51-349f-497d-a7e4-88a44fce87da" TYPE="crypto_LUKS"

What's the expected behaviour?

The passphrase interface should decrypt the root partition.

What's the current behaviour?

The passphrase interface try to decrypt the sd card instead (which got no passphrase)

How to reproduce your issue?

I think that setting up a blanc but luksed sd card and putting it in a fde emmc ppp setup should reproduce the issue.

What device are you using?

The pinephone pro

On what postmarketOS version did you encounter the issue?

• edge (master branch)
• v21.12

On what environment did you encounter the issue?

Phone environments

• Phosh
• Plasma Mobile
• Sxmo (Wayland/Sway)

Other

• No environment
• GNOME
• KDE Plasma
• Kodi
• MATE
• Shelli
• Sway
• Weston
• Xfce4
• fbkeyboard
• i3wm
• Sxmo (Xorg/Dwm)

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device