handoff: VSync/event-wedge fixes + iterate 2.A–2.BC research notes
Source changes (dormant parity infra, retained from iterate 2.AI/2.AO): - xenia-kernel/exports.rs: nt_create_event manual_reset polarity + related event wiring - xenia-gpu/mmio_region.rs: D1MODE_VBLANK_VLINE_STATUS hardcode parity Also lands the audit-runs/ analysis notes (.md/.txt/.json digests) for the iterate 2.x VSync/0x10e8/0x1004 wedge investigation. Raw trace dumps (.jsonl/.gz/.csv/.stdout) and agent worktrees (.claude/) are gitignored as regenerable local artifacts — see memory + HANDOFF for the running findings. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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MechaCat02
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audit-runs/phase-c17-keWait-native-object/diff-cold-vs-cold.md
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audit-runs/phase-c17-keWait-native-object/diff-cold-vs-cold.md
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# Phase A diff report
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**This report is the output of Phase A's diff harness. Divergences
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shown here are INPUT for Phase B (first-divergence localization),
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not findings of Phase A.** Phase A's job is to make the harness
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itself correct, not to analyze what it surfaces.
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## Summary
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| canary_tid | ours_tid | matched | canary_total | ours_total | first_divergence_at |
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|---|---|---|---|---|---|
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| 4 | 11 | 11 | 39205 | 11 | — |
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| 6 | 1 | 102553 | 330781 | 108490 | 102553 |
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| 7 | 2 | 32 | 32 | 33 | — |
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| 12 | 7 | 3 | 6014 | 5 | 3 |
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| 14 | 9 | 41 | 1049995 | 77 | 41 |
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| 15 | 10 | 2 | 713071 | 17 | 2 |
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## canary_tid=4 → ours_tid=11
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No divergence within the 11 compared events (canary has 39205, ours has 11).
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## canary_tid=6 → ours_tid=1
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First divergence at `tid_event_idx=102553`: kind: canary='handle.create' ours='kernel.return'
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**Pre-context (last 5 matching events):**
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```
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canary: [102548] import.call RtlLeaveCriticalSection
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ours: [102548] import.call RtlLeaveCriticalSection
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canary: [102549] kernel.call RtlLeaveCriticalSection
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ours: [102549] kernel.call RtlLeaveCriticalSection
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canary: [102550] kernel.return RtlLeaveCriticalSection
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ours: [102550] kernel.return RtlLeaveCriticalSection
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canary: [102551] import.call NtDuplicateObject
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ours: [102551] import.call NtDuplicateObject
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canary: [102552] kernel.call NtDuplicateObject
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ours: [102552] kernel.call NtDuplicateObject
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```
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**Divergent event:**
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```
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canary: [102553] handle.create sid=df686b147b291902
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ours: [102553] kernel.return NtDuplicateObject
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```
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**Next event after the divergence (if any):**
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```
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canary: [102554] kernel.return NtDuplicateObject
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ours: [102554] import.call RtlEnterCriticalSection
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```
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**Raw events (JSON):**
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```json
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{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 1393604400, "kind": "handle.create", "payload": {"handle_semantic_id": "df686b147b291902", "object_name": null, "object_type": 1, "raw_handle_id": "0xf8000044"}, "schema_version": 1, "tid": 6, "tid_event_idx": 102553}
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{"deterministic": true, "engine": "ours", "guest_cycle": 5398419, "host_ns": 473009661, "kind": "kernel.return", "payload": {"name": "NtDuplicateObject", "return_value": 0, "side_effects": [], "status": "0x00000000"}, "schema_version": 1, "tid": 1, "tid_event_idx": 102553}
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```
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## canary_tid=7 → ours_tid=2
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No divergence within the 32 compared events (canary has 32, ours has 33).
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## canary_tid=12 → ours_tid=7
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First divergence at `tid_event_idx=3`: payload.timeout_ns: canary=-30000000 ours=429466729600
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**Pre-context (last 5 matching events):**
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```
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canary: [0] import.call KeWaitForSingleObject
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ours: [0] import.call KeWaitForSingleObject
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canary: [1] kernel.call KeWaitForSingleObject
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ours: [1] kernel.call KeWaitForSingleObject
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canary: [2] handle.create sid=750aad55e1061f0a
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ours: [2] handle.create sid=b6ff5e6c9ca50ba1
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```
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**Divergent event:**
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```
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canary: [3] wait.begin {'handles_semantic_ids': ['750aad55e1061f0a'], 'timeout_ns': -30000000, 'alertable': False, 'wait_type': 'any'}
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ours: [3] wait.begin {'handles_semantic_ids': ['b6ff5e6c9ca50ba1'], 'timeout_ns': 429466729600, 'alertable': False, 'wait_type': 'any'}
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```
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**Next event after the divergence (if any):**
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```
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canary: [4] kernel.return KeWaitForSingleObject
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ours: [4] kernel.return KeWaitForSingleObject
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```
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**Raw events (JSON):**
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```json
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{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 1543612200, "kind": "wait.begin", "payload": {"alertable": false, "handles_semantic_ids": ["750aad55e1061f0a"], "timeout_ns": -30000000, "wait_type": "any"}, "schema_version": 1, "tid": 12, "tid_event_idx": 3}
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{"deterministic": true, "engine": "ours", "guest_cycle": 0, "host_ns": 497636971, "kind": "wait.begin", "payload": {"alertable": false, "handles_semantic_ids": ["b6ff5e6c9ca50ba1"], "timeout_ns": 429466729600, "wait_type": "any"}, "schema_version": 1, "tid": 7, "tid_event_idx": 3}
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```
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## canary_tid=14 → ours_tid=9
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First divergence at `tid_event_idx=41`: payload.ord: canary=503 ours=293
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**Pre-context (last 5 matching events):**
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```
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canary: [36] kernel.call KeReleaseSpinLockFromRaisedIrql
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ours: [36] kernel.call KeReleaseSpinLockFromRaisedIrql
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canary: [37] kernel.return KeReleaseSpinLockFromRaisedIrql
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ours: [37] kernel.return KeReleaseSpinLockFromRaisedIrql
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canary: [38] import.call KfLowerIrql
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ours: [38] import.call KfLowerIrql
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canary: [39] kernel.call KfLowerIrql
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ours: [39] kernel.call KfLowerIrql
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canary: [40] kernel.return KfLowerIrql
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ours: [40] kernel.return KfLowerIrql
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```
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**Divergent event:**
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```
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canary: [41] import.call XAudioGetVoiceCategoryVolumeChangeMask
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ours: [41] import.call RtlEnterCriticalSection
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```
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**Next event after the divergence (if any):**
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```
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canary: [42] kernel.call XAudioGetVoiceCategoryVolumeChangeMask
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ours: [42] kernel.call RtlEnterCriticalSection
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```
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**Raw events (JSON):**
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```json
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{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 1766886300, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "XAudioGetVoiceCategoryVolumeChangeMask", "ord": 503}, "schema_version": 1, "tid": 14, "tid_event_idx": 41}
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{"deterministic": true, "engine": "ours", "guest_cycle": 417, "host_ns": 1698700479, "kind": "import.call", "payload": {"module": "xboxkrnl.exe", "name": "RtlEnterCriticalSection", "ord": 293}, "schema_version": 1, "tid": 9, "tid_event_idx": 41}
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```
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## canary_tid=15 → ours_tid=10
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First divergence at `tid_event_idx=2`: kind: canary='wait.begin' ours='handle.create'
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**Pre-context (last 5 matching events):**
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```
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canary: [0] import.call KeWaitForSingleObject
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ours: [0] import.call KeWaitForSingleObject
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canary: [1] kernel.call KeWaitForSingleObject
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ours: [1] kernel.call KeWaitForSingleObject
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```
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**Divergent event:**
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```
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canary: [2] wait.begin {'handles_semantic_ids': ['66ae1b598f928969'], 'timeout_ns': -1, 'alertable': False, 'wait_type': 'any'}
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ours: [2] handle.create sid=b9e6799594b746ee
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```
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**Next event after the divergence (if any):**
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```
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canary: [3] kernel.return KeWaitForSingleObject
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ours: [3] wait.begin {'handles_semantic_ids': ['b9e6799594b746ee'], 'timeout_ns': -1, 'alertable': False, 'wait_type': 'any'}
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```
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**Raw events (JSON):**
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```json
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{"deterministic": true, "engine": "canary", "guest_cycle": 0, "host_ns": 1665434200, "kind": "wait.begin", "payload": {"alertable": false, "handles_semantic_ids": ["66ae1b598f928969"], "timeout_ns": -1, "wait_type": "any"}, "schema_version": 1, "tid": 15, "tid_event_idx": 2}
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{"deterministic": true, "engine": "ours", "guest_cycle": 0, "host_ns": 1630381728, "kind": "handle.create", "payload": {"handle_semantic_id": "b9e6799594b746ee", "object_name": null, "object_type": 3, "raw_handle_id": "0x828a3230"}, "schema_version": 1, "tid": 10, "tid_event_idx": 2}
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```
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