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stateroot: reject validated root if it doesn't match local one

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Prevent

2021-03-27T00:05:23.382+0300    WARN    blockQueue: failed adding block into the blockchain     {"error": "error while trying to apply MPT changes: key not found", "blockHeight": 12757, "nextIndex": 12758}

after node restart (node reads "local" root hash that it doesn't have).
This commit is contained in:
Roman Khimov 2021-03-27 00:31:22 +03:00
parent d143696328
commit 216513e14f
1 changed files with 11 additions and 0 deletions
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11
pkg/core/stateroot/store.go
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@ -2,12 +2,20 @@ package stateroot
import (
"encoding/binary"
"errors"
"fmt"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/io"
)
var (
// ErrStateMismatch means that local state root doesn't match the one
// signed by state validators.
ErrStateMismatch = errors.New("stateroot mismatch")
)
const (
prefixGC = 0x01
prefixLocal = 0x02
@ -60,6 +68,9 @@ func (s *Module) AddStateRoot(sr *state.MPTRoot) error {
if err != nil {
return err
}
if !local.Root.Equals(sr.Root) {
return fmt.Errorf("%w at block %d: %v vs %v", ErrStateMismatch, sr.Index, local.Root, sr.Root)
}
if len(local.Witness) != 0 {
return nil
}