userspace stack start and end

[Xin Tong]

so the stack  always starts at 0xc0000000 on x86 32bit and stack-start is
pointing to the smaller address of stack ie growing downwards
xin
On Sunday, July 27, 2014, anupam kapoor <anupam.kapoor at gmail.com> wrote:

> >>>>> [Sun, 27 Jul 2014 22:35:22 -0500]: "Xin Tong" (xin-tong):
>
> ,----[ xin-tong ]
> | where is user:stack-segment-size defined ?
> `----
> that is computable once again :) (assuming x86, and 1+3 split)
>   user:stack-segment-size = ((unsigned long)(0xc0000000 -
> user:start-stack)) >> PAGE_SHIFT
>
> kind regards
> anupam
>
>
> ,----[ anupam ]
> | ,----[ xin-tong ]
> | | I am trying to find the start and end address of the userspace
> | stack.
> | | I see in the task_struct there is start_stack. But I could not
> | find
> | | end_start anywhere in the kernel code ?
> | |
> | | Can someone please tell me how to find the end of the stack ?
> |
> | `----
> | but that should be computable right e.g.
> | user:stack-end = user:stack-start + user:stack-segment-size *
> | number-of-pages
> `----
>
>
>
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