go runtime_error ai_generated true

fatal error: sync: 解锁未加锁的 RWMutex

fatal error: sync: RUnlock of unlocked RWMutex

ID: go/fatal-error-sync-runlock-of-unlocked-rwmutex

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-08-11首次发现

版本兼容性

版本状态引入弃用备注
1.18 active — — —
1.22 active — — —

根因分析

在没有匹配 RLock() 的情况下调用 RUnlock()，或读锁已被释放，破坏了读者计数。

English

RUnlock() is called without a matching RLock(), or the read lock was already released, corrupting the reader count.

generic

解决方案

  1. 94% 成功率 
    Pair defer mu.RUnlock() with mu.RLock() on the next line, and defer mu.Unlock() with mu.Lock(), never mixing them.
  2. 90% 成功率 
    Use a helper: func withReadLock(mu *sync.RWMutex, fn func()) { mu.RLock(); defer mu.RUnlock(); fn() }.

无效尝试

常见但无效的做法:

  1. 70% 失败

    This sacrifices read concurrency and does not fix the missing RLock; if RUnlock is still called, it now mismatches Lock/Unlock.

  2. 90% 失败

    Adds an extra lock that is never released, causing a permanent deadlock on the next writer.