go resource_error ai_generated true

goroutine 泄漏：N 个 goroutine 阻塞在 chan receive（由 goleak 检测）

goroutine leak: N goroutines blocked on chan receive (detected by goleak)

ID: go/goroutine-leak-n-goroutines-blocked-on-chan-receive-detect

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
0证据数
2024-11-15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 — — —
1.23 active — — —

根因分析

goroutine 永远阻塞在 channel 接收上，因为发送方已退出或 channel 从未关闭。

English

Goroutines block forever on a channel receive because the sender exited or the channel is never closed.

generic

解决方案

  1. 92% 成功率 
    Pass a context.Context and select on ctx.Done(): select { case v := <-ch: handle(v); case <-ctx.Done(): return }.
  2. 90% 成功率 
    Ensure the sender closes the channel when finished: defer close(ch) in the producer, so receivers unblock with the zero value.

无效尝试

常见但无效的做法:

  1. 80% 失败

    Buffering delays the block but does not prevent it once the buffer fills; the leak returns under load.

  2. 95% 失败

    Blocked goroutines are reachable and not garbage collected; GC cannot reclaim them.