fix: GetBlock rpc api reports wrong gasUsed (#878)

* GetBlock rpc api report wrong gasUsed

Closes: #877

Solution:
- workaround at rpc side, ignore the gasUsed in such cases.

* Update rpc/ethereum/backend/backend.go

* changelog

CHANGELOG.md

@@ -68,6 +68,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (rpc) [tharsis#860](https://github.com/tharsis/ethermint/pull/860) Fix `eth_getLogs` when specify blockHash without address/topics, and limit the response size.
 * (rpc) [tharsis#865](https://github.com/tharsis/ethermint/pull/865) Fix RPC Filter parameters being ignored
 * (evm) [tharsis#871](https://github.com/tharsis/ethermint/pull/871) Set correct nonce in `EthCall` and `EstimateGas` grpc query.
+* (rpc) [tharsis#878](https://github.com/tharsis/ethermint/pull/878) Workaround to make GetBlock RPC api report correct block gas used.
 
 ## [v0.9.0] - 2021-12-01
 

rpc/ethereum/backend/backend.go

@@ -443,6 +443,11 @@ func (e *EVMBackend) EthBlockFromTendermint(
 	gasUsed := uint64(0)
 
 	for _, txsResult := range txResults {
+		// workaround for cosmos-sdk bug. https://github.com/cosmos/cosmos-sdk/issues/10832
+		if txsResult.GetCode() == 11 && txsResult.GetLog() == "no block gas left to run tx: out of gas" {
+			// block gas limit has exceeded, other txs must have failed with same reason.
+			break
+		}
 		gasUsed += uint64(txsResult.GetGasUsed())
 	}