eth_estimateGas returns gas is different from reth and returns a larger value

[moyishizhe]

System information

Geth version: geth version
CL client & version: e.g. lighthouse/nimbus/[email protected]
OS & Version: Windows/Linux/OSX
Commit hash : (if develop)

Actual behaviour

reth:

curl --location 'https://ethereum-rpc.publicnode.com/' \
--header 'Content-Type: application/json' \
--data '{"method":"eth_estimateGas","params":[{"from":"0x53c26a4e5b698940c3a0c520821544f7a48ade5b","to":"0xeb9bf100225c214efc3e7c651ebbadcf85177607","value":"0x186a0", "data":"0xe11013dd00000000000000000000000053c26a4e5b698940c3a0c520821544f7a48ade5b0000000000000000000000000000000000000000000000000000000000030d400000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000b7375706572627269646765000000000000000000000000000000000000000000"}],"id":1,"jsonrpc":"2.0"}'
{"jsonrpc":"2.0","id":1,"result":"0x234e2"}

geth:

curl --location 'https://api.zan.top/eth-mainnet' \
--header 'Content-Type: application/json' \
--data '{"method":"eth_estimateGas","params":[{"from":"0x53c26a4e5b698940c3a0c520821544f7a48ade5b","to":"0xeb9bf100225c214efc3e7c651ebbadcf85177607","value":"0x186a0", "data":"0xe11013dd00000000000000000000000053c26a4e5b698940c3a0c520821544f7a48ade5b0000000000000000000000000000000000000000000000000000000000030d400000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000b7375706572627269646765000000000000000000000000000000000000000000"}],"id":1,"jsonrpc":"2.0"}'
{"result":"0x9ba0e","id":1,"jsonrpc":"2.0"}

[ChanHongMing]

Tracing inside the call,
we found that it is due to a delegate call from 0x88e529a6ccd302c948689cd5156c83d4614fae92 to 0xe2f826324b2faf99e513d16d266c3f80ae87832b
This is due to opcode BASEFEE return a 0 in geth, while reth return something "0x6624359bf" at certain block
This is Geth

This is Reth

[MariusVanDerWijden]

Looks like we manually set it to 0 to avoid something breaking here:

go-ethereum/eth/gasestimator/gasestimator.go

Line 231 in cc814d6

evmContext.BaseFee = new(big.Int)

Maybe @s1na knows more, if I understand the code correctly, we could also take min(basefee, feecap) to solve the same issue

[s1na]

Right base fee is set to 0 because by default eth_call and eth_estimateGas have a gas price (fee cap) of 0 and it is a protocol violation to have baseFee > fee cap. (see context: #28470)

Setting a realistic gas price in eth_estimateGas should return the correct response.