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When running anaconda with liveimg and a local image (this may also happen with network liveimg images but I did no test it) the code in _prepare_configuration ends up calling the LiveImagePayload.kernel_version_list before the source image has been downloaded and mounted.

You can't access that attribute until after payload.pre_install() has been run, otherwise it will raise an error like:

pyanaconda.payload.errors.PayloadInstallError: kernel_version_list: missing tar payload

The cause for this seems to be commit bfa16e9961a171e2f9ca89d4e06cd8bbb81027ad where things were switched to dbus tasks. It used to evaluate kernel_version_list when the write_boot_loader function was called later, not when it was added to the queue.

Sorry, meant to add the link to the test run results (at the end):

https://github.com/cockpit-project/bots/pull/961

also, FWIW, reproduced using:
anaconda-core-33.16.3.5-1.el8.x86_64
anaconda-tui-33.16.3.5-1.el8.x86_64

I've also confirmed that it is a problem with a network liveimg as well.

Thanks a lot Brian for finding the issue. It was exactly what you said.

PR: https://github.com/rhinstaller/anaconda/pull/2657

updates image: http://10.43.136.2/trees/jk/public/bugs/1846156/updates.img


Adding updates image if you want to test the patch.

Reproduced on RHEL-8.3.0-20200609.1 with anaconda-33.16.3.5-1.el8.
Verified on RHEL-8.3.0-20200825.0 with anaconda-33.16.3.21-1.el8.

Moving to VERIFIED.

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 (anaconda 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-2020:4729