Investigate hang caused by missed WFP 'filter delete' confirmation callback invocation.

[dv-msft]

Describe the bug

The multi-threaded kernel kernel mode stress test suite can perform a continuous load+unload+reload operation on the NetEbpfExt extension driver (while it is in use) for inducing additional stress. This has exposed an OS level issue in the Windows WFP component, i.e.: A 'filter delete' request issued NetEbpfExt is not confirmed by WFP causing the NetEbpfExt driver to hang forever during the unload process.

(The failure is random and is primarily seen during CI/CD passes only. This issue is not reproducible in the local dev environment)

We need to engage with the WFP team to determine a fix for this this issue.

OS information

No response

Steps taken to reproduce bug

1. Uncomment the bindmonitor_tail_call_invoke_program_test test in ebpf_stress_tests_km.exe
2. Run the test application with extension restart enabled in the CI/CD pipeline.

Expected behavior

The CI/CD run should complete successfully.

Actual outcome

The CI/CD run hangs and the test is force terminated on account of excessive run time.

Additional details

No response