所有崩溃都有cpu执行指令引起。主要包含两种:1)指令非法;2)访问非法。
访问非法又包含两种:(1)访问不存在;2)访问越界;3()访问受限。
指令非法:cpu不支持的指令。
An illegal opcode, also called an undocumented instruction, is an instruction to a that is not mentioned in any official documentation released by the CPU's designer or manufacturer, which nevertheless has an effect.
https://en.wikipedia.org/wiki/Illegal_opcode
指令属于线程;线程有自己的合法资源;线程运行在一个沙盒中,撞破了沙盒的界限,就会被系统kill掉。