{"record":{"id":"f904b828887bf524","repo":"hashicorp/terraform","slug":"failed-to-read-state-w","errorCode":null,"errorMessage":"failed to read state: %w","messagePattern":"failed to read state: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/cloud/state.go","lineNumber":219,"sourceCode":"\tf := statefile.New(s.state, s.lineage, s.serial)\n\n\tvar buf bytes.Buffer\n\terr := statefile.Write(f, &buf)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tvar jsonState []byte\n\tif schemas != nil {\n\t\tjsonState, err = jsonstate.Marshal(f, schemas)\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t}\n\n\tstateFile, err := statefile.Read(bytes.NewReader(buf.Bytes()))\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to read state: %w\", err)\n\t}\n\n\tov, err := jsonstate.MarshalOutputs(stateFile.State.RootOutputValues)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to translate outputs: %w\", err)\n\t}\n\tjsonStateOutputs, err := json.Marshal(ov)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to marshal outputs to json: %w\", err)\n\t}\n\n\terr = s.uploadState(s.lineage, s.serial, s.forcePush, buf.Bytes(), jsonState, jsonStateOutputs)\n\tif err != nil {\n\t\ts.stateUploadErr = true\n\t\treturn fmt.Errorf(\"error uploading state: %w\", err)\n\t}\n\t// After we've successfully persisted, what we just wrote is our new\n\t// reference state until someone calls RefreshState again.","sourceCodeStart":201,"sourceCodeEnd":237,"githubUrl":"https://github.com/hashicorp/terraform/blob/d32a084675427f5ac3f7d2868578ef8b2c1dc525/internal/cloud/state.go#L201-L237","documentation":"Thrown during PersistState after the in-memory state is serialized to a byte buffer (statefile.Write) and immediately re-read via statefile.Read to validate the round-trip and extract RootOutputValues. A failure here means the buffer that was just successfully written cannot be parsed back, which signals an internal serialization bug or memory corruption rather than a user-facing configuration problem. The %w wraps the underlying statefile.Read error.","triggerScenarios":"statefile.Write produces bytes that statefile.Read rejects; memory corruption affecting the bytes.Buffer between write and read; a development/alpha build with an incompatible state format version; a third-party state mutation that left the buffer in an invalid state.","commonSituations":"Almost never seen in production releases. Can surface in CI when testing unreleased terraform builds with state format changes, or after hardware memory errors. Users running nightly/alpha builds may encounter it during format migrations.","solutions":["Re-run the terraform command (apply/plan) — if transient memory corruption the second attempt will succeed","Upgrade to the latest stable terraform release if running an alpha/nightly build that may have a state-format bug","File a terraform issue including both the statefile.Write success and statefile.Read error to help reproduce the format mismatch","If reproducible, run terraform state pull > state.json to inspect the serialized state manually and confirm it parses with your CLI version"],"exampleFix":null,"handlingStrategy":"retry","validationCode":"// Before PersistState, validate the state round-trips locally:\nbuf := new(bytes.Buffer)\nif err := statefile.Write(statefile.New(s.state, s.lineage, s.serial), buf); err != nil {\n    return err\n}\nif _, err := statefile.Read(bytes.NewReader(buf.Bytes())); err != nil {\n    // state would fail the PersistState round-trip; abort early\n    return fmt.Errorf(\"state round-trip validation failed before persist: %w\", err)\n}","typeGuard":null,"tryCatchPattern":"// Wrap PersistState in a retry for transient round-trip failures:\nvar lastErr error\nfor attempt := 0; attempt < 3; attempt++ {\n    err := stateMgr.PersistState(schemas)\n    if err == nil {\n        break\n    }\n    if strings.Contains(err.Error(), \"failed to read state\") {\n        lastErr = err\n        time.Sleep(time.Duration(attempt+1) * time.Second)\n        continue\n    }\n    return err // non-retryable\n}\nif lastErr != nil {\n    return fmt.Errorf(\"persist failed after retries: %w\", lastErr)\n}","preventionTips":["Keep terraform at the latest stable release to avoid state-format round-trip bugs","Validate state with 'terraform state list' after major version upgrades before running apply against cloud workspaces","In CI, run on a fixed terraform version and only upgrade after testing state compatibility"],"tags":["serialization","state-persist","internal","terraform","statefile"],"backgroundTag":null,"analyzedSha":"d32a084675427f5ac3f7d2868578ef8b2c1dc525","analyzedAt":"2026-08-11T18:43:52.779Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}