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Egor_P 7b6b061e32 [Backport] version bumps and prdocs reordering 1.9.0 (#3758)
This PR backports:
- node version bump
- `spec_vesion` bump
- reordering of the `prdocs` to the appropriate folder
from the `1.9.0` release branch
2024-03-21 09:00:10 +00:00

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title: Prevents staking controllers from becoming stashes of different ledgers; Ensures that no ledger in bad state is mutated.
doc:
- audience: Runtime User
description: |
This PR introduces a fix to the staking logic which prevents an existing controller from bonding as a stash of another ledger, which
lead to staking ledger inconsistencies down the line. In addition, it adds a few (temporary) gates to prevent ledgers that are already
in a bad state from mutating its state.
In summary:
* Checks if stash is already a controller when calling `Call::bond` and fails if that's the case;
* Ensures that all fetching ledgers from storage are done through the `StakingLedger` API;
* Ensures that a `Error::BadState` is returned if the ledger bonding is in a bad state. This prevents bad ledgers from mutating (e.g.
`bond_extra`, `set_controller`, etc) its state and avoid further data inconsistencies.
* Prevents stashes which are controllers or another ledger from calling `set_controller`, since that may lead to a bad state.
* Adds further try-state runtime checks that check if there are ledgers in a bad state based on their bonded metadata.
crates:
- name: pallet-staking