fix(detector): direction coverage — TIMER_MONKEYPATCH extension to time.* attrs#25
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fix(detector): direction coverage — TIMER_MONKEYPATCH extension to time.* attrs#25SinatrasC wants to merge 1 commit into
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…ment Targets red #127 (Timing monkeypatch direction): import time def custom_kernel(data): setattr(time, 'perf_counter', lambda: 0.0) return data.clone() The existing detect_timer_monkeypatch only catches torch.cuda.Event-side patching. A host-side timer monkeypatch is the same family of attack at a different layer — the harness reads time.perf_counter etc. for elapsed calculations and a stub returning 0.0 lets a 'submission' claim arbitrary speedups. Add two regex matchers: * 'time.{perf_counter|perf_counter_ns|monotonic|monotonic_ns|process_time|time} = ...' * 'setattr(time, '<one of the above>', ...)' Both emit the existing TIMER_MONKEYPATCH pattern (timing_monkeypatch family, AUTO_FILTER) with evidence specifying which attribute was hit.
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Thanks for the KernelGuard Flywheel Campaign contribution. This PR is now superseded by the consolidated rule-family implementation in #273, which folds this detector coverage together with the related passing-eval variants. |
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Summary
Targets KG red #127 under "Direction — Timing monkeypatch". Coverage example for the previously-empty direction; the red was submitted via the direct API path and is currently
red_accepted: 1on the live leaderboard.Targets red #127 (time module monkeypatch).
This blue: TIMER_MONKEYPATCH extension to time. attrs*.
Local verification
Patch was verified locally against a corpus that exercises:
plain_kernel,workspace_lazy,shape_dispatch,config_lookup,triton_jit_kernel) — all stay validKernelGuard-Red-Submission: 127