# BRIEFING — 2026-06-27T02:32:36+09:00

## Mission
Fix a critical timeout hang vulnerability in `reversecore_mcp/tools/analysis/lief_tools.py` and update the test coverage in `tests/unit/tools/analysis/test_lief_tools.py`.

## 🔒 My Identity
- Archetype: worker
- Roles: implementer, qa, specialist
- Working directory: /Users/sjkim1127/Reversecore_MCP/.agents/worker_m3_2/
- Original parent: 847f8649-af26-43dd-9288-56200cb7d016
- Milestone: Fix timeout hang vulnerability in lief_tools

## 🔒 Key Constraints
- Avoid using the `with` statement for `concurrent.futures.ProcessPoolExecutor` in `parse_binary_with_lief`. Instead, manage the executor manually.
- When `concurrent.futures.TimeoutError` is caught:
  - Iterate through `list(executor._processes.values())` and call `.terminate()` and `.join(timeout=1.0)` on each process.
  - Call `executor.shutdown(wait=False, cancel_futures=True)`.
- On success, call `executor.shutdown(wait=True)`.
- On other exceptions (like `BrokenProcessPool`), call `executor.shutdown(wait=False)`.
- Verify coverage >= 75% (aim for 99%).
- Write changes and handoff report to `handoff.md` in the working directory.

## Current Parent
- Conversation ID: 847f8649-af26-43dd-9288-56200cb7d016
- Updated: not yet

## Task Summary
- **What to build**: Fix ProcessPoolExecutor timeout handling in `reversecore_mcp/tools/analysis/lief_tools.py` to prevent hanging processes, and add appropriate tests.
- **Success criteria**: Handled timeout correctly, all tests pass, test coverage >= 75%, and verification confirms terminated mock processes.
- **Interface contracts**: reversecore_mcp/tools/analysis/lief_tools.py
- **Code layout**: reversecore_mcp/

## Key Decisions Made
- Replaced the `with` statement for `ProcessPoolExecutor` with manual creation and disposal in `parse_binary_with_lief`.
- Handled TimeoutError by terminating and joining all subprocesses.
- Implemented specific shutdown behaviors: `wait=True` for success, `wait=False, cancel_futures=True` for timeout, `wait=False` for BrokenProcessPool and general exceptions.

## Artifact Index
- None

## Change Tracker
- **Files modified**:
  - `reversecore_mcp/tools/analysis/lief_tools.py` — manual executor lifecycle management, process termination on timeout
  - `tests/unit/tools/analysis/test_lief_tools.py` — unit tests verifying manual process termination and shutdown options
- **Build status**: Pass
- **Pending issues**: None

## Quality Status
- **Build/test result**: Pass (1569 unit tests passed, 0 failures)
- **Lint status**: Clean (Ruff check passed, Black check passed)
- **Tests added/modified**: 4 new tests: `test_timeout_terminates_processes`, `test_shutdown_on_success`, `test_shutdown_on_broken_pool`, `test_shutdown_on_other_exceptions`

## Loaded Skills
- None
