kcatss

@gaogaotiantian as I mentioned above, https://github.com/python/cpython/issues/120289 could not prevent this issue. it still trigger crash after patched the PR(https://github.com/python/cpython/issues/120289) `call_timer` could be called two place(`InitContext`, `Stop`, ) https://github.com/python/cpython/issues/120289 focuses on...

@sobolevn In my opinion, there are two parts to consider when mitigating dangerous arbitrary calls by user-defined callbacks: 1. Arbitrary calls by user-defined callbacks. 2. Reentrancy that causes side effects....