unix - Where is the stack memory allocated from for a Linux process?

Question

We know that when a process is created,one stack is allocated for this process.The size of the stack is typically 8 Mb in linux.My question is that,from where this stack is allocated??From user space or from system space?

Answer 1

I hope you know the concept that all user process will be kept in user space only. It uses system calls to get some work done by kernel.

The stack memory will be part of process context area in memory. i.e user space.

Suppose your process is running, get the PID by ps -ax. say 1234 is your PID.

cat /proc/1234/maps will give you the mapping of that particular process.

In thats maps file, you can check the stack for stack mapping.