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[GH-ISSUE #6068] [Bug] Managed source changes return Evidence integrity errors and incorrect recovery #3710
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opened 2026-10-31 00:43:16 +00:00 by bsakaguchi
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Originally created by @coygeek on GitHub (Oct 21, 2026).
Original GitHub issue: https://github.com/morluto/rea/issues/6068
Before submitting
Area
Native analysis or decompilation
Observed behavior
inspect_managed_artifact,inspect_managed_members, andinspect_managed_native_boundariesreturnevidence_integrity_mismatch,retryable: false, and instructions to recreate or re-import Evidence when the selected assembly changes during source acquisition. The failure concerns the assembly on disk, before this call creates its inspection Evidence.Executed through in-memory MCP transport using the production server, sessions, managed provider, parser and file reads. For each tool, both a source rewrite after target admission and a source rewrite during snapshot acquisition produced this diagnostic. Unchanged controls and reruns after the replacement became stable succeeded.
Reproduction
In a prepared source checkout with locked dependencies, save the following as
tests/boundary/mcp/managedSourceChange.repro.test.ts. SetREPRO_ROOTto an existing disposable writable directory and run:The wrappers call the real provider and bounded reader. They synchronize actual assembly writes at the two acquisition boundaries; they do not fabricate errors or replace parser results. The assertions characterize the current incorrect diagnostic, so the observation test passes on the affected revision. One run exercises six changed-source cases, three unchanged controls and six stable-source recovery calls.
Expected behavior
Preserve refusal of changed bytes, but return
artifact_changedand guidance to wait for a stable source and rerun the managed operation. This is source acquisition rather than validation of supplied Evidence.The artifact-change type explicitly represents a selected artifact changing during acquisition. Its recovery explains stabilization and reacquisition; its projection retains operation, path, reason and
stable-artifact-readboundary. It is retryable. In contrast, EvidenceIntegrityError is for Evidence identity, schema or bundle-manifest validation. The Electron fuse reader already maps the same regular-file change signal to the artifact-change type.Impact and scope
P2: changed-source rejection works, but callers get the wrong machine-readable code, retryability and recovery action. Recreating unchanged Evidence does not stabilize a concurrently rebuilt assembly. Rerunning the public tool after the new file became stable succeeded in all six recovery cases; this is an observed workaround.
Both source-change windows reproduced for all three managed inspection tools in each of two focused runs. No successful stale analysis, corrupted output or security boundary crossing was observed. Natural race frequency, downstream retry automation, real application assemblies, CLI transport and other platforms were not measured. The same digest guard exists in path-based managed member comparison, but that workflow was inspected only.
REA version
Package manifest
rea-agents6.7.0; source revision52415975942a4b9c53a817915b313ccc404f280e.Runtime and platform
macOS 27.0.1 arm64; Node.js v26.12.0; locked Vitest 5.0.3. Node is admitted by the package engine range; the repository's exact Node 24.18.0 pin was not separately exercised.
Target and artifact context
Repository-generated PE/CLI assembly from
buildManagedPeFixture(), replaced with a second valid fixture whose method name isOther. Real regular-file writes and reads; assembly code is never loaded or executed. No external engine or simulated analysis provider.Interface
MCP
Earliest failure stage
Native analysis or reconstruction
Relevant output or evidence
Each changed-source request returned
isError: true, nostructuredContent, and this public error shape:After-admission cases retain a
details.reasonbeginningManaged artifact digest changed after open: expected ... observed .... During-read cases retainManaged source changed while inspect_managed_artifact was reading ...(or the corresponding operation). The latter producer errors preserve a realRegularFileChangedErrorcause. Both digest values remain available in the after-admission reason; this report does not claim they disappear.The focused observation test passed. Its controls, stable-source reruns, final MCP ping and explicit session close also passed.
Typed outcome or recovery expected
artifact_changed/integrity_mismatch,retryable: true, with operation, selected path and change reason, directing the caller to stabilize and reacquire the source. The category remainsintegrity_mismatch; the code, retryability, source context and recovery distinguish the cases.Analysis or suspected cause
Two producing checks independently choose the Evidence error type: managed read normalization translates
RegularFileChangedErrortoEvidenceIntegrityError; the provider digest check uses the same type for bytes differing from admission. Changing only one leaves the other failure path.The MCP adapter calls isolated managed execution, which opens and executes a fresh managed-only session on every call. Therefore changing a DLL between two completed calls is not sufficient: this reproduction changes it inside one call's admission/acquisition window. CLI uses the same managed execution path, but was not executed here.
Source-only additional scope: path-based managed comparison has an equivalent digest check. The existing provider test already expects
EvidenceIntegrityErrorafter a source change; its expectation needs to reflect source-artifact semantics rather than preserve the current classification.Additional context
Related managed-Evidence classification reports have different producers and repairs: #5988 concerns contradictory identities within supplied managed Evidence; #5990 and its comment concern authentic Evidence chosen for a wrong workflow role; #5985 concerns managed entry cancellation losing its abort cause. #5978 covers Apktool snapshot-copy classification and #5969 covers Wakaru's final source fingerprint. None changes these managed source-acquisition guards. #4381 and merged PR #4446 concern hash-cancellation descriptor ownership, and #5939 concerns Ghidra NativeAOT private-snapshot parsing.
Fetched upstream main
8e3bf56e11bcb56d0e8754fdfa32a7a9f004ca13leaves the relevant managed guards and artifact-change/Evidence-integrity mappings unchanged. That later revision was inspected, not executed. No last-known-good version was established.@coygeek commented on GitHub (Oct 24, 2026):
Checked the reported fix on
mainatd87e73f2db.Both acquisition failure owners now use AnalysisArtifactChangedError: digest disagreement after admission and RegularFileChangedError during a stable snapshot. ManagedStaticProvider uses that shared identity check for the acquired snapshot before interpreting it. Existing tests assert artifact_changed/retryable true for a real rewrite during read and typed artifact-changed for stale digest.
Implementation: ManagedSnapshot.ts, ManagedSnapshot.ts.
The relevant regression checks in managedStaticProvider.test.ts passed in the focused test run on this revision. This closure is based on the current source and those checks; provider fixtures do not establish a real-engine run. Closing as completed on main.