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Description of problem:
Booting RHEL installation image throws warnings like this:

dracut-initqueue[1033]: /lib/img-lib.sh: line 12: warning: command substitution: ignored null byte in input


Version-Release number of selected component (if applicable):


How reproducible:
100%

Steps to Reproduce:
1. Boot RHEL or RHV-H installation ISO
2. Watch the warning messages

Actual results:
Warning messages appear

Expected results:
Boot should be clean

Additional info:
This happens for quite some time now and affects both RHEL and RHV-H (and any other derived ISOs which are based on RHEL)
The affected file is supplied by the dracut-live package.

A patch to the u/s was submitted for review:
https://github.com/dracutdevs/dracut/pull/1379

Created attachment 1774358 [details]
Boot process showing the warning messages

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.

I've prepared a pull request:
https://github.com/redhat-plumbers/dracut-rhel8/pull/25

Merged via https://gitlab.com/redhat/centos-stream/rpms/dracut/-/merge_requests/18

Moving to ITM 26 as agreed with QE.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (dracut bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:7087