{
  "id": "go/rwmutex-read-lock-recursive",
  "signature": "panic: sync: RUnlock of unlocked RWMutex",
  "signature_zh": "恐慌：同步：对未锁定的RWMutex执行RUnlock",
  "regex": "panic:\\ sync:\\ RUnlock\\ of\\ unlocked\\ RWMutex",
  "domain": "go",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "Calling RUnlock without a matching RLock, often due to recursive read locking.",
  "root_cause_type": "generic",
  "root_cause_zh": "在没有相应RLock的情况下调用RUnlock，通常是由于递归读锁定。",
  "versions": [
    {
      "version": "1.19",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "RLock is not reentrant; multiple RLock without unlock causes deadlock or panic.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Attempting to upgrade read lock to write lock causes deadlock.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.99,
      "how": "mu.RLock(); defer mu.RUnlock()",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.95,
      "how": "Restructure code to hold lock only once per goroutine.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-09-18",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}