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fix(onboard): exclude the GPU proof from the sandbox create fingerprint - #12372
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Signed-off-by: Tinson Lai <tinsonl@nvidia.com>
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Included review availability: This review used your included allowance. Your plan provides up to 12 included reviews per hour; 11 remain after this review. 📝 WalkthroughWalkthroughSandbox create fingerprints now exclude ChangesSandbox resume fingerprint
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: Medium Suggested reviewers: Merge Risk: ⚪ Minimal · up to Resume after a transient sandbox failure should now accept older checkpoints that carry the GPU proof, while still rejecting changed GPU settings. No remaining merge-blocking risk was identified. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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Review comments at @src/lib/onboard/machine/handlers/sandbox.ts:
- Line 927: Update fingerprint comparison in the sandbox resume flow to preserve
compatibility with legacy proof-bearing sandbox_create receipts: when exact
matching fails, parse the legacy GPU JSON segment, remove only sandboxGpuProof,
and compare all remaining create inputs and durable-intent fields. Keep exact
matching for the new fingerprint format.
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src/lib/onboard/machine/handlers/sandbox-recreate-resume.test.tssrc/lib/onboard/machine/handlers/sandbox.ts
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Receipts written before the fingerprint excluded sandboxGpuProof still hold it in the GPU settings, so resume rejected an unchanged session. Both fingerprint checks now remove only that member from the recorded receipt before they compare it. Signed-off-by: Tinson Lai <tinsonl@nvidia.com>
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Reviewed at exact head e3336576ed01c7d96314366eeef311a3313e1ef4 against base 72a0b586db9ed6410dcacc75ac5e8711a13a22fb.
The change removes only the runtime-produced sandboxGpuProof from new create fingerprints and normalizes that one field in legacy receipts. Other GPU inputs and durable create intent remain exact-matched, malformed receipts stay fail-closed, and changed GPU mode is still rejected before sandbox mutation.
Evidence: 49 focused resume and crash-recovery tests passed locally on the exact head. All 65 GitHub checks passed, including CodeQL, CLI coverage, Docker and rootless Podman all-agent activation, and self-hosted security contracts. The nine-category security review found no blocking issue.
Outcome
nemoclaw onboard --resumecan now recreate or repair a sandbox with GPU passthrough after an earlier run completed the sandbox step. Before this change, that resumed run always exited with "A previous onboarding attempt recorded sandbox '' with different build or policy inputs than this run requests." A change to the sandbox GPU settings is still rejected.Reason
The onboarding sandbox step records a
sandbox_createfingerprint aftercreateSandbox()returns. The fingerprint serialized the whole sandbox GPU configuration object. When GPU passthrough is enabled, sandbox creation runs the GPU proof after the sandbox is Ready and writes the proof result tosandboxGpuProofon that same object. The recorded fingerprint therefore included the GPU proof, which is a result of creation, not an input.A resumed run rebuilds the GPU configuration without
sandboxGpuProof. The pre-create check inassertCheckpointCreateInputsStillMatchthen never matched, so every resume that recreated or repaired the sandbox exited. The output then recommendednemoclaw onboard --resumeagain, which repeated the same failure.Related issues
--recreate-sandboxskip the check, but the GPU proof stayed in the fingerprint.v0.0.127, which [Linux][Onboard] onboard --resume rejects its saved checkpoint after exec relay closure #12266 reports, does not contain fix(onboard): reserve the route before a resumed sandbox recreate #12055.Changes
src/lib/onboard/machine/handlers/sandbox.ts:currentSandboxCreateFingerprintserializes the sandbox GPU configuration withoutsandboxGpuProof. A configuration without that field serializes as before, so fingerprints recorded without a GPU proof stay valid. The Hermes GPU proof and the GPU compatibility fallback write the same field, so this change also covers them.sandboxGpuProof. Its value is not available on resume, so the check cannot rebuild the old fingerprint. Checkpoint crash recovery andassertCheckpointCreateInputsStillMatchnow pass the recorded fingerprint throughwithoutRecordedSandboxGpuProoffirst. It locates the recorded GPU settings after the current fields that precede them and removes onlysandboxGpuProof. A receipt without that member is unchanged and still needs an exact match.src/lib/onboard/machine/handlers/sandbox-recreate-resume.test.ts: two tests run onboarding twice on one saved session. The first run'screateSandboxwrites a GPU proof onto the configuration that it receives. The resumed run finds the sandbox not ready. Each test runs once with a recorded receipt that omits the GPU proof and once with a receipt that contains it.src/lib/onboard/machine/handlers/sandbox-checkpoint-crash-recovery.test.ts: two crash-recovery tests use a recorded receipt with a GPU proof whose text contains}|.Verification
npx vitest run --project cli src/lib/onboard/machine/handlers/sandbox-recreate-resume.test.ts src/lib/onboard/machine/handlers/sandbox-checkpoint-crash-recovery.test.ts— without thesandbox.tschange of the latest commit, the two new tests that accept a receipt with a GPU proof failed withexit 1fromrejectDriftedCheckpointFingerprint, and 47 tests passed. With the change, 49 tests passed, including after the documentation review corrections.NEMOCLAW_CORPORATE_CA_IMPORT=0 npx vitest run --project cli src/lib/onboard/machine src/lib/onboard/abandoned-route-reservation.test.ts— 76 files and 1075 tests passed.NEMOCLAW_CORPORATE_CA_IMPORT=0 npm run test:changed— growth guardrails passed (7 tests); 24 files and 285 tests passed.NODE_OPTIONS=--max-old-space-size=12288 npm run typecheck:cli— passed.npm run checks:repository— 18 of 18 checks passed.npm run test:titles:check— passed, including after the documentation review corrections.npx oxlintandnpx oxfmt --checkon the changed files, andgit diff --check— clean.git commitpre-commit and commit-msg hooks — passed, including the codebase growth guardrails and commitlint.bd5e395e23— PASS, no documentation update needed. Its two wording corrections are applied.npm test, andnpm run validate:pr.Review notes
sandboxGpuProofmember in the GPU settings is removed before the comparison, and every other field still needs an exact match. The tests that change the GPU mode are the negative evidence for both checks. No credential, policy, or network behavior changes.nemoclaw onboard --resume --recreate-sandboxornemoclaw onboard --fresh. The receipt compatibility applies when that field matches, for example for a sandbox built with--from <Dockerfile>, whose first field is the sandbox name.Signed-off-by: Tinson Lai tinsonl@nvidia.com
Summary by CodeRabbit
--recreate-sandbox. Other GPU configuration differences remain part of the compatibility check.