如何检查内存地址在Linux内核中是否有效? [英] How to check a memory address is valid inside Linux kernel?

问题描述

我正在调试网络驱动程序中损坏的数据包内容.我想将数据包内容转储到网络驱动程序中进行调试.在此之前，我想检查其地址在内核地址空间内是否可访问且有效.除了NULL检查外，其他任何API都可以使用?

i am debugging a corrupt packet content inside Network driver. I want to dump a packet content inside network driver for debugging. Before that i want to check whether its address is accessible and valid inside kernel address space . Any API is available for the same other that NULL check??

推荐答案

我想，

I guess, virt_addr_valid() might come in handy. As far as I understand, this is merely a validity check with respect to the kernel address space.

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