HelloZeroNet/ZeroNet

ZeroNet freezes during startup because of bogus timeout values passed to kevent.

Open

#1,202 创建于 2017年12月9日

在 GitHub 查看
 (0 评论) (0 反应) (0 负责人)JavaScript (18,200 star) (2,245 fork)batch import
bughelp wanted

描述

  • ZeroNet version: 0.6.0
    • Operating system:FreeBSD 11.1
    • Web browser:Chrome
    • Tor status: always
    • Opened port: no
    • Special configuration: n/a

ZeroNet freezes during startup. The problem was traced to the kevent call made by libev from gevent. Bogus timeout value is passed to kevent. gevent maintainer claims that race condition in ZeroNet causes the problem.

See details here: https://github.com/gevent/gevent/issues/1051#issuecomment-350490266

贡献者指南

技术栈
python
领域
backend
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。
4
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。
1-2 days
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。
stale
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
understanding of gevent and libevdebugging race conditions
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。
15
研究方向
Investigate the race condition described in the linked gevent issue (https://github.com/gevent/gevent/issues/1051#issuecomment 350490266). The problem occurs during startup when bogus timeout values are passed to kevent by libev/gevent. Start by examining the initialization sequence in the ZeroNet codebase where gevent is used, focusing on any timeout handling or socket operations that could lead to invalid state. Consider reproducing the issue on FreeBSD 11.1 to confirm the behavior.