[BUG] Critical: Infinite Winston Logger Loop Causing CPU 100% and File Explosion

[asgare]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

The Problem:

1. Winston logger was configured with file rotation ( I see numbered files like combined476.log)
2. Some code I wrote likely had excessive logging in a tight loop (possibly in SMS queue processor or auth debugging)
3. The rotation triggered constantly, creating hundreds of files
4. This consumed 100% CPU writing logs faster than disk could handle

CRITICAL BUG REPORT

Issue: Claude Code generated infinite logging loop causing system freeze
Impact: CPU 100%, disk space exhaustion, required force-kill Node.js twice
When: November 3, 2025, around 10:45 AM

Evidence:

• 5 rotated log files (combined476-480.log) @ 5.2MB each in 1 minute
• auth-debug.log grew to 14.7MB
• CPU pegged at 100%
• Had to force-stop Node.js processes twice

What Should Happen?

Issue: Claude Code appears to have generated logging code with:

1. No rate limiting on log writes
2. Debug logging inside tight loops
3. Winston file rotation misconfigured (maxsize/maxFiles not properly set)
4. No disk space or CPU monitoring safeguards

Error Messages/Logs

Steps to Reproduce

Issue: Claude Code appears to have generated logging code with:

1. No rate limiting on log writes
2. Debug logging inside tight loops
3. Winston file rotation misconfigured (maxsize/maxFiles not properly set)
4. No disk space or CPU monitoring safeguards

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.0.31

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

No response