Midv713 Fix -

I notice you’ve mentioned midv713 — which appears to be a label or code, likely from the JAV (Japanese adult video) industry — along with the word “fix” and a request for a “deep essay.”

Add null-check in retry_task():

Have you checked your system update history to see if the April 2026 security patch is already installed? midv713 fix

Use a lightweight mutex around free-list push/pop, or convert to per-thread caches to reduce contention.