Cannot upgrade to v1.9.0 or v1.9.1: undefined field buspath

[twelho]

Bug Report

Description

Talos v1.8.4 machines in my cluster fail to upgrade to v1.9.0 (and v1.9.1):

[talos] task upgrade (1/1): starting
[talos] task upgrade (1/1): performing upgrade via "factory.talos.dev/installer-secureboot/1b4c6b033d3cd38f9aa63b7ded1c501466c969eb9230adaed857797b2de81356:v1.9.0"
2025/01/02 19:11:33 running Talos installer v1.9.0
Error: machine configuration is invalid: 1 error occurred:
 * install disk selector is invalid: ERROR: <input>:-1:0: undefined field 'buspath'

<full help text for `installer install`>

machine configuration is invalid: 1 error occurred:
 * install disk selector is invalid: ERROR: <input>:-1:0: undefined field 'buspath'

The machine configuration looks as follows:

machine:
  install:
      disk: /dev/sda
      diskSelector:
          busPath: /pci0000:00/0000:00:17.0/*

The disk entry is present by default, the diskSelector is added using a patch. Upgrades across the v1.8.X series worked without issues. I did check that using a busPath diskSelector should still be supported, correct?

Environment

• Talos version: v1.8.4
• Kubernetes version: v1.31.4

[twelho]

I tried manually removing disk: /dev/sda, same error.

[dhess]

Probably related: #10060