[bug] Log file resource leak

[docker-agent]

🟡 medium - bug

File: cmd/root/eval.go (line 80)

Code

defer logFile.Close()

Problem

The logFile.Close() is deferred immediately after opening the log file. However, if an error occurs before logFile is successfully assigned (e.g., if os.Create(logPath) fails and logFile remains nil), the deferred call would lead to a nil pointer dereference panic when it attempts to close a non-existent file.

Suggested Fix

The defer logFile.Close() statement should be placed after the check for err != nil from os.Create(logPath). This ensures that logFile.Close() is only called if logFile has been successfully opened.

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Found by nightly codebase scan

[quencs]

:::writing{variant=“chat_message” id=“64852”}
Thanks for the report.

In this case logFile is only used after checking the error returned by os.Create, so the deferred logFile.Close() should only run when the file has been successfully created.

That said, placing the defer after the error check would make the intent clearer and avoid any possible confusion for readers. Happy to adjust if needed.
:::