fix: set header hash every block (backport #9552) (#9555)

* fix: set header hash every block (#9552)

## Description

- Sets the header hash on every block (ref #9390). Previously was only set during initialization for `deliverState`.
- Closes #9514

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(cherry picked from commit 81747b4)

# Conflicts:
#	CHANGELOG.md

* fix conflicts

Co-authored-by: Federico Kunze <[email protected]>
Co-authored-by: Federico Kunze <[email protected]>

CHANGELOG.md

@@ -67,6 +67,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
+* [\#9514](https://github.com/cosmos/cosmos-sdk/issues/9514) Fix panic when retrieving the `BlockGasMeter` on `(Re)CheckTx` mode.
 * [\#9235](https://github.com/cosmos/cosmos-sdk/pull/9235) CreateMembershipProof/CreateNonMembershipProof now returns an error
 if input key is empty, or input data contains empty key.
 * [\#9108](https://github.com/cosmos/cosmos-sdk/pull/9108) Fixed the bug with querying multisig account, which is not showing threshold and public_keys.

baseapp/abci.go

@@ -162,8 +162,7 @@ func (app *BaseApp) BeginBlock(req abci.RequestBeginBlock) (res abci.ResponseBeg
 		// by InitChain. Context is now updated with Header information.
 		app.deliverState.ctx = app.deliverState.ctx.
 			WithBlockHeader(req.Header).
-			WithBlockHeight(req.Header.Height).
-			WithHeaderHash(req.Hash)
+			WithBlockHeight(req.Header.Height)
 	}
 
 	// add block gas meter
@@ -174,7 +173,19 @@ func (app *BaseApp) BeginBlock(req abci.RequestBeginBlock) (res abci.ResponseBeg
 		gasMeter = sdk.NewInfiniteGasMeter()
 	}
 
-	app.deliverState.ctx = app.deliverState.ctx.WithBlockGasMeter(gasMeter)
+	// NOTE: header hash is not set in NewContext, so we manually set it here
+
+	app.deliverState.ctx = app.deliverState.ctx.
+		WithBlockGasMeter(gasMeter).
+		WithHeaderHash(req.Hash)
+
+	// we also set block gas meter to checkState in case the application needs to
+	// verify gas consumption during (Re)CheckTx
+	if app.checkState != nil {
+		app.checkState.ctx = app.checkState.ctx.
+			WithBlockGasMeter(gasMeter).
+			WithHeaderHash(req.Hash)
+	}
 
 	if app.beginBlocker != nil {
 		res = app.beginBlocker(app.deliverState.ctx, req)

baseapp/baseapp_test.go

@@ -950,7 +950,11 @@ func TestCheckTx(t *testing.T) {
 
 	// If a block is committed, CheckTx state should be reset.
 	header := tmproto.Header{Height: 1}
-	app.BeginBlock(abci.RequestBeginBlock{Header: header})
+	app.BeginBlock(abci.RequestBeginBlock{Header: header, Hash: []byte("hash")})
+
+	require.NotNil(t, app.checkState.ctx.BlockGasMeter(), "block gas meter should have been set to checkState")
+	require.NotEmpty(t, app.checkState.ctx.HeaderHash())
+
 	app.EndBlock(abci.RequestEndBlock{})
 	app.Commit()