eth: ensure from<to when tracing chain (credits Chen Nan via bugbount…

…y) (ethereum#251) Co-authored-by: Martin Holst Swende <[email protected]>
s1na · May 25, 2023 · 2f10aac · 2f10aac
1 parent 62de42d
commit 2f10aac
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/eth/api_tracer.go b/eth/api_tracer.go
@@ -121,6 +121,9 @@ func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.Block
 	if to == nil {
 		return nil, fmt.Errorf("end block #%d not found", end)
 	}
+	if from.Number().Cmp(to.Number()) >= 0 {
+		return nil, fmt.Errorf("end block (#%d) needs to come after start block (#%d)", end, start)
+	}
 	return api.traceChain(ctx, from, to, config)
 }