runtime: TestNetpollWaiters failures

描述

#!watchflakes
default <- pkg == "runtime" && test == "TestNetpollWaiters"

=== RUN   TestNetpollWaiters
=== PAUSE TestNetpollWaiters
=== CONT  TestNetpollWaiters
    crash_test.go:1152: /opt/golang/swarm/.swarming/w/ir/x/t/go-build930232214/testprognet.exe NetpollWaiters: exit status 1
    crash_test.go:1155: output is not "OK\n"
        2025/12/03 03:21:22 current waiters 1
--- FAIL: TestNetpollWaiters (1.49s)

贡献者指南

技术栈

go

领域

testing

议题类型

bug

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

5

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

over 1 week

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

fresh

清晰度议题是否清楚说明期望改动、验收标准和下一步。

mostly clear

前置要求

Go runtime internalsnetpoll mechanismflaky test debugging

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

10

研究方向

Investigate the test `TestNetpollWaiters` in `crash test.go` (line 1152). The failure indicates that after the test, the number of waiters is 1 instead of 0. Look at the test logic and the netpoll implementation in the runtime package. Check if there is a race condition or a leftover goroutine. Consider reviewing recent changes to netpoll that might have introduced this flake. See also the example log for details.