go runtime_error ai_generated true

fatal error: sync: 解锁未加锁的互斥锁

fatal error: sync: unlock of unlocked mutex

ID: go/fatal-error-sync-unlock-of-unlocked-mutex

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80%修复率
89%置信度
0证据数
2024-07-02首次发现

版本兼容性

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

根因分析

在互斥锁未被持有的情况下调用 mu.Unlock()，通常因为提前返回后 defer unlock 仍执行，或重复解锁。

English

mu.Unlock() is called when the mutex is not held, usually because a defer unlock runs after an early return or a double unlock.

generic

解决方案

  1. 95% 成功率 
    Use defer mu.Unlock() immediately after mu.Lock() in the same function so they always pair.
  2. 90% 成功率 
    Audit all code paths: ensure no early return between Lock and Unlock without defer, and never unlock in a different function than the one that locked.

无效尝试

常见但无效的做法:

  1. 98% 失败

    This is a fatal runtime error, not a panic; recover cannot catch it and the process exits.

  2. 80% 失败

    The flag itself needs synchronization and is often set incorrectly, reintroducing the bug under concurrency.