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crash at Rb_tree_rebalance_for_erase in libbootstrap #12

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noodle1983 opened this issue Dec 20, 2019 · 1 comment

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noodle1983 commented Dec 20, 2019

两三个项目碰到了这个问题，Unity版本含2017和2019
堆栈如下图（来自sin，thx）

有几个怀疑的点：

多线程锁的问题，日志中发现在signal处理函数中，std::mutex会失效，全改成了pthread，看起来没问题
std::map 和 static link的问题，把map换成了c版的，hash函数直接cache size取余。

新增了个分支，做了些改动: https://github.com/noodle1983/UnityAndroidIl2cppPatchDemo-libboostrap/tree/crash_in_map_test

来自sin的反馈，暂时没有崩溃；另外还有加载场景卡死的问题，无日志，原因不明，未深入。
求测。

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noodle1983 commented Jan 6, 2020 •

edited

崩溃和加载场景卡死的问题，已合并到库的master分支，部分机型比较容易出现问题，求测。
改动：

额外变量存文件系统，去掉mutex，怀疑用户空间的mutex在hook调用里面可能会和系统时钟中断有冲突。
zip alignment，这个改动可能是无效的，因为测试工作量太大，没回滚
不保存old_xxx函数，应该不相关
不主动dlopen libil2cpp。

分支：
https://github.com/noodle1983/UnityAndroidIl2cppPatchDemo-libboostrap/tree/master

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