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ante, evm: fix panic when checking BlockGasMeter (#120)

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* ante, evm: fix panic when checking BlockGasMeter

* update block gas limit function
This commit is contained in:
Federico Kunze
2021-06-14 10:24:08 -04:00
committed by GitHub
parent 9d18414c93
commit bb91d8d93d
6 changed files with 42 additions and 16 deletions
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app/ante/eth.go
+11 -4
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@@ -7,6 +7,7 @@ import (
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
ethermint "github.com/cosmos/ethermint/types"
evmtypes "github.com/cosmos/ethermint/x/evm/types"
"github.com/ethereum/go-ethereum/common"
@@ -296,10 +297,16 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
ctx.GasMeter().ConsumeGas(intrinsicGas, "intrinsic gas")
}
// generate a copy of the gas pool (i.e block gas meter) to see if we've run out of gas for this block
// if current gas consumed is greater than the limit, this funcion panics and the error is recovered on the Baseapp
gasPool := sdk.NewGasMeter(ctx.BlockGasMeter().Limit())
gasPool.ConsumeGas(ctx.GasMeter().GasConsumedToLimit(), "gas pool check")
// TODO: deprecate after https://github.com/cosmos/cosmos-sdk/issues/9514 is fixed on SDK
blockGasLimit := ethermint.BlockGasLimit(ctx)
// NOTE: safety check
if blockGasLimit > 0 {
// generate a copy of the gas pool (i.e block gas meter) to see if we've run out of gas for this block
// if current gas consumed is greater than the limit, this funcion panics and the error is recovered on the Baseapp
gasPool := sdk.NewGasMeter(blockGasLimit)
gasPool.ConsumeGas(ctx.GasMeter().GasConsumedToLimit(), "gas pool check")
}
// we know that we have enough gas on the pool to cover the intrinsic gas
// set up the updated context to the evm Keeper