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fix(evm): clear logs if tx failed in post processing hooks #1128

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Jun 21, 2022
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fix(evm): clear logs if tx failed in post processing hooks #1128

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6899a7b
Problem: clear logs if tx failed in post processing hooks
yihuang Jun 15, 2022
fa3c93a
Update x/evm/keeper/state_transition.go
yihuang Jun 20, 2022
951fe60
Merge branch 'main' into main
fedekunze Jun 21, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -41,6 +41,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
### State Machine Breaking

* (evm) [tharsis#1124](https://github.com/tharsis/ethermint/pull/1124) Reject non-replay-protected tx in ante handler to prevent replay attack
* (evm) [tharsis#1128](https://github.com/tharsis/ethermint/pull/1128) Clear tx logs if tx failed in post processing hooks

### Bug Fixes

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1 change: 1 addition & 0 deletions x/evm/handler_test.go
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Expand Up @@ -599,6 +599,7 @@ func (suite *EvmTestSuite) TestERC20TransferReverted() {

suite.Require().True(res.Failed())
suite.Require().Equal(tc.expErr, res.VmError)
suite.Require().Empty(res.Logs)

after := k.GetBalance(suite.ctx, suite.from)

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3 changes: 3 additions & 0 deletions x/evm/keeper/state_transition.go
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Expand Up @@ -268,6 +268,9 @@ func (k *Keeper) ApplyTransaction(ctx sdk.Context, tx *ethtypes.Transaction) (*t
// If hooks return error, revert the whole tx.
res.VmError = types.ErrPostTxProcessing.Error()
k.Logger(ctx).Error("tx post processing failed", "error", err)

// If the tx failed in post processing hooks, we should clear the logs
res.Logs = nil
} else if commit != nil {
// PostTxProcessing is successful, commit the tmpCtx
commit()
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