[Bug 1981622] Re: mtd device must be supplied (device name is empty)

[Metalliko]

Same “issue” here, system boots as expected and seem to work just fine, but might taque a second or two more time to boot since y notice the error, but not sure.
I have ‘vanilla’ 22.04 with 5.15.0-41-generic kernel.
Worth mention that besides the M2 nvme ssd from wich I boot and / is, I also have 2 wd hdd's in linux raid 0 so there is a /dev/md device.

$ ls /dev/md*
/dev/md0  /dev/md0p1
/dev/md:
0  0p1

Relevan mount output lines:

$ mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=14299692k,nr_inodes=3574923,mode=755,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=2866956k,mode=755,inode64)
/dev/nvme0n1p2 on / type ext4 (rw,relatime,errors=remount-ro,stripe=32)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=17979)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
none on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=2866952k,nr_inodes=716738,mode=700,uid=1000,gid=1000,inode64)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
portal on /run/user/1000/doc type fuse.portal (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
tmpfs on /run/snapd/ns type tmpfs (rw,nosuid,nodev,noexec,relatime,size=2866956k,mode=755,inode64)
/dev/nvme0n1p1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/md0p1 on /mnt/cipher type ext4 (rw,nosuid,nodev,relatime,stripe=256)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=2866952k,nr_inodes=716738,mode=700,uid=1000,gid=1000,inode64)

The error mesage:

$ sudo dmesg | grep mtd
[    3.248501] systemd[1]: Starting Load Kernel Module mtdpstore...
[    3.258680] mtd device must be supplied (device name is empty)

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https://bugs.launchpad.net/bugs/1981622

Title:
  mtd device must be supplied (device name is empty)

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  After updating my 22.04 system (possibly caused by Systemd update).
  And now booting, dmesg has two errors:

  'mtd device must be supplied (device name is empty)'.

  See line 8 and 134 in the included logfile.

  The system are booting as it should though, and the system are working
  like it should no errors at all.

  Is this maybe caused by 'efi-pstore-not-cleared-on-boot.patch' in
  systemd?

  I have an EFI mounted at boot but it isn't used because I have
  installed my system in legacy BIOS mode.

  Is this maybe the culprit?

  I could ignore the message but it isn't nice though.

  Regards

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