go runtime_error ai_generated true

fatal error: 所有 goroutine 都在休眠 - 死锁！（互斥锁加锁顺序）

fatal error: all goroutines are asleep - deadlock! (mutex lock ordering)

ID: go/deadlock-two-mutexes

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-11-12首次发现

版本兼容性

版本状态引入弃用备注
1.0+ active — — —

根因分析

两个 goroutine 以相反顺序获取互斥锁 A 和 B，各自等待对方持有的锁。

English

Two goroutines acquire mutexes A and B in opposite orders, each waiting for the other's lock.

generic

解决方案

  1. 92% 成功率 
    // always lock A then B
muA.Lock()
defer muA.Unlock()
muB.Lock()
defer muB.Unlock()
  2. 88% 成功率 
    var mu sync.Mutex
mu.Lock()
defer mu.Unlock()
// access both A and B

无效尝试

常见但无效的做法:

  1. 70% 失败

    Busy retry burns CPU and does not guarantee progress; can still livelock.

  2. 60% 失败

    Serializes everything, destroying concurrency, and may still deadlock with other lock paths.