blkid always hangs, launched by dpkg --configure -a

[Darxus]

I noticed last night that package install fails. Then I noticed processes running from an automatic upgrade that ran on September first. Whenever I run "dpkg --configure -a", it gets stuck on blkid hanging. When I run the same command manually through strace, it seems to get hung on opening the floppy drive, which does not exist:

# strace -o blkid.log blkid -l -t UUID=55e42e8c-9316-46bf-b6a3-888f7368c779

...
lstat("/dev/fd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2, 0), ...}) = 0
access("/dev/fd0", F_OK) = 0
stat("/dev/fd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2, 0), ...}) = 0
openat(AT_FDCWD, "/sys/dev/block/2:0", O_RDONLY|O_CLOEXEC) = 4
openat(4, "dm/uuid", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
close(4) = 0
openat(AT_FDCWD, "/dev/fd0", O_RDONLY|O_CLOEXEC

This bug was submitted by running ubuntu-bug on one of the hung instances of blkid.

https://ubuntuforums.org/showthread.php?t=2450510

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: util-linux 2.34-0.1ubuntu9
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Tue Sep 15 10:18:23 2020
ExecutablePath: /sbin/blkid
InstallationDate: Installed on 2016-05-28 (1571 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: util-linux
UpgradeStatus: Upgraded to focal on 2020-08-20 (25 days ago)