Closed 3 days ago.

I would like to ask how to call a kernel module in C code. I have a question: if I call setup.sh for the project like this, will it execute according to the priority of IRQ numbers?

I need your help with running my code.
Here it is:

I need your help with running my code.
Here it is:

I’m self-studying csapp, and currently stuck at level-3 of Attack Lab. This lab requires you to
inject some code by a 40-byte input string. The basic idea is that you input a 48-byte string,
with the first 40-byte as your injection code and the last 8-byte
corresponding to the injection code starting address.
So after you input this string, original return address would be replaced by your code address.

The following code,

Research has revealed that machine status for 386+ processors is stored in the cr0 ( C, R, Zero ) register, and that the low bit being set will indicate protected mode is enabled. The dirt-simple method is to copy cr0 into eax, and then in turn copy eax into a local C variable of the same size (32 bits). We can then query the local C variable using the C language in any way we like.

I wanted to understand references better so I played with some C++ code to see diffrence between references and pointers, when they compiled to assembly (-O3) I realized they both give the same assembly code.

Well, I understand C++ pretty good, but I want to understand the output given by e.g. the infamous godbolt (it’s really good, even, if you don’t understand ASM. 🙂 )