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fix(feynman): fee ranges (#1223)

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* fix: feynman fee ranges

* remove an impossible underflow scenario

* chore: auto version bump [bot]

---------

Co-authored-by: Jonas Theis <4181434+jonastheis@users.noreply.github.com>
This commit is contained in:
colin 2025-07-18 09:23:38 +08:00 committed by GitHub
parent d1fcb787b1
commit ef17a6951b
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GPG key ID: B5690EEEBB952194
2 changed files with 19 additions and 6 deletions
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23
consensus/misc/eip1559.go
View file

@ -122,6 +122,11 @@ func calcBaseFeeFeynman(config *params.ChainConfig, parent *types.Header, overhe
baseFee := new(big.Int).Set(baseFeeEIP1559)
baseFee.Add(baseFee, overhead)
// Apply maximum base fee bound to the final result (including overhead)
if baseFee.Cmp(big.NewInt(MaximumL2BaseFee)) > 0 {
baseFee = big.NewInt(MaximumL2BaseFee)
}
return baseFee
}
@ -159,9 +164,6 @@ func calcBaseFeeEIP1559(config *params.ChainConfig, parent *types.Header) *big.I
return num.Add(parentBaseFeeEIP1559, common.Big1)
}
baseFee := num.Add(parentBaseFeeEIP1559, num)
if baseFee.Cmp(big.NewInt(MaximumL2BaseFee)) > 0 {
baseFee = big.NewInt(MaximumL2BaseFee)
}
return baseFee
} else {
// Otherwise if the parent block used less gas than its target, the baseFee should decrease.
@ -179,10 +181,21 @@ func calcBaseFeeEIP1559(config *params.ChainConfig, parent *types.Header) *big.I
}
}
func extractBaseFeeEIP1559(config *params.ChainConfig, baseFee *big.Int) *big.Int {
func extractBaseFeeEIP1559(_ *params.ChainConfig, baseFee *big.Int) *big.Int {
_, overhead := ReadL2BaseFeeCoefficients()
// In Feynman base fee calculation, we reuse the contract's baseFeeOverhead slot as the proving base fee.
return new(big.Int).Sub(baseFee, overhead)
result := new(big.Int).Sub(baseFee, overhead)
// Add underflow protection: return max(0, baseFee - overhead)
//
// Potential underflow scenarios:
// - Contract overhead updates: when overhead is updated via contract,
// it might become larger than current base fee
if result.Sign() < 0 {
return big.NewInt(0)
}
return result
}
// MinBaseFee calculates the minimum L2 base fee based on the current coefficients.

2
params/version.go
View file

@ -24,7 +24,7 @@ import (
const (
VersionMajor = 5 // Major version component of the current release
VersionMinor = 8 // Minor version component of the current release
VersionPatch = 71 // Patch version component of the current release
VersionPatch = 72 // Patch version component of the current release
VersionMeta = "mainnet" // Version metadata to append to the version string
)