Re: [uml-devel] skas3(-v3) for 2.4.27 with exec-shield

[BlaisorBlade <blaisorblade_spam@yahoo.it>]

On Thursday 16 September 2004 23:01, Goetz Bock wrote:
> Hi all,
>
> as I've no realy idea about the internal work of the skas patches, I'll
> have to bother you.
>
> I'd like to run a 2.4.27 kernel with exec-shield patch and skas3, if
> possible the -v3 version from BlaisorBlade, except that it does not
> apply :-(

> There are three conflicts in mm/mprotect.c but i suspect there are more
> not working sections.

> The patch seams to mainly change current->mm to mm, after defining
>
>     struct mm_struct * mm = vma->vm_mm;
>
> unfortunately i've no idea how current-> mm and vma->vm_mm (aka mm)
> relate. Are they the same?
Not at all; they must be different.
If you look below, you see that in the old code, sys_mprotect says: "I'm 
acting on current->mm"; the patch wants to be able to pass it any mm_struct 
(and this is done within mm/proc_mm.c), so I had to replace every reference 
to current->mm with a reference to the mm.

> Sorry, but obviosely I've no idea about the vm subsystem ... and not
> more about the rest of the kernel :-(
Don't worry.
-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729


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