go runtime_error ai_generated true

错误：context 已取消但 worker 仍在处理（循环中未检查 ctx）

error: context canceled while worker still processing (ctx not checked in loop)

ID: go/context-canceled-in-select-loop

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-09-03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

长时间运行的 goroutine 只 select 数据 channel，从不检查 ctx.Done()，因此取消无法停止它们；它们继续工作并可能阻塞关闭流程。

English

Long-running goroutines select only on data channels and never check ctx.Done(), so cancellation does not stop them; they keep working and may block shutdown.

generic

解决方案

  1. 95% 成功率 
    Add ctx to every select: 'select { case <-ctx.Done(): return ctx.Err(); case v := <-in: ... }'
  2. 90% 成功率 
    Pass ctx into blocking calls (http.NewRequestWithContext, db.QueryContext) so they abort on cancel

无效尝试

常见但无效的做法:

  1. 85% 失败

    Skips deferred cleanup, corrupts state, drops in-flight data

  2. 75% 失败

    Does not propagate intent; workers run to full timeout even when done