{
  "finding_id": "DF-2689",
  "status": "untested",
  "reproduced": 0,
  "impact": "none",
  "confidence": "certain",
  "verdict": "Source-certain Info finding: an unconditional leftover kprintf at sys/vm/vm_pageout.c:1932 prints 'DEBUG: pageout HOLD->FREE <ptr>' on the PQ_HOLD scanner's normal, expected recovery path, disclosing a kernel heap pointer to the console/message buffer (CWE-532) and spamming the log under ordinary unprivileged memory pressure. The surrounding hold/unhold 'reprocess' logic was re-verified correct against vm_page_unhold's spinlocked re-test protocol (vm_page.c:1413-1432) and vm_page_free_toq's object disassociation (vm_page.c:3186); only the print is wrong. No guest run: static one-line defect, trigger race is rare and demonstrates nothing beyond the source.",
  "exploit_chain": "",
  "evidence": [
    "sys/vm/vm_pageout.c:1932 (the DEBUG print)",
    "sys/vm/vm_page.c:1403-1410 (documented free/unhold race this scanner cleans)",
    "sys/vm/vm_page.c:1420-1428 (unhold re-test under spinlocks — scanner dance verified safe)",
    "findings/poc/DF-2689/fix.diff (delete the line)"
  ],
  "kernel_refs": [
    "sys/vm/vm_pageout.c:1932",
    "sys/vm/vm_page.c:1407",
    "sys/vm/vm_page.c:1421"
  ],
  "poc_changes": "",
  "attempts": 0,
  "guest_uname": "",
  "runtime_sec": 0,
  "guest_dirty": 0,
  "build_cmd": "",
  "run_cmd": "",
  "code_hash": "",
  "notes": "Guest left up and clean; verification intentionally skipped per contract for Info-hardening findings (status reported as 'untested' per the strict poc_results enum).",
  "recommended_fix": "Delete the kprintf at vm_pageout.c:1932 (or gate it behind vm_pageout_debug)."
}