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Prevent overflow during inactivity leak

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This commit is contained in:
Shane Bammel 2022-12-13 16:59:50 -06:00
parent e154590063
commit fd231a618a
1 changed files with 5 additions and 5 deletions
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10
beacon-chain/core/altair/epoch_precompute.go
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@ -345,11 +345,11 @@ func attestationDelta(
// Process finality delay penalty
// Apply an additional penalty to validators that did not vote on the correct target or slashed
if !val.IsPrevEpochTargetAttester || val.IsSlashed {
n, err := math.Mul64(effectiveBalance, val.InactivityScore)
if err != nil {
return &AttDelta{}, err
}
attDelta.InactivityPenalty = n / inactivityDenominator
// effectiveBalance * val.InactivityScore / inactivityDenominator
inactivityPenalty := new(big.Int).SetUint64(effectiveBalance)
inactivityPenalty.Mul(inactivityPenalty, new(big.Int).SetUint64(val.InactivityScore))
inactivityPenalty.Div(inactivityPenalty, new(big.Int).SetUint64(inactivityDenominator))
attDelta.InactivityPenalty = inactivityPenalty.Uint64()
}
return attDelta, nil