id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
26490	migrate command's database checks may result in RecursionError	Tim Graham	nobody	"Following the steps in #26488 results in the `InvalidBasesError` error described in that ticket until 0d3c616fbb2f49fa7ff6809e5a6777275352b35b where something like this happens:
{{{
  File ""/home/tim/code/django/django/core/management/commands/migrate.py"", line 62, in _run_checks
    issues.extend(super(Command, self).check(**kwargs))
  File ""/home/tim/code/django/django/core/management/base.py"", line 385, in check
    include_deployment_checks=include_deployment_checks,
  File ""/home/tim/code/django/django/core/management/commands/migrate.py"", line 61, in _run_checks
    issues = run_checks(tags=[Tags.database])
  File ""/home/tim/code/django/django/core/checks/registry.py"", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File ""/home/tim/code/django/django/core/checks/database.py"", line 9, in check_database_backends
    for conn in connections.all():
  File ""/home/tim/code/django/django/db/utils.py"", line 226, in all
    return [self[alias] for alias in self]
RecursionError: maximum recursion depth exceeded
}}}
The loss of a helpful message isn't desirable."	Bug	closed	Database layer (models, ORM)	dev	Release blocker	duplicate		Claude Paroz _@…	Accepted	0	0	0	0	0	0