Re: brk checks in PR_SET_MM code

[Cyrill Gorcunov]

On Wed, Dec 16, 2020 at 08:29:30PM -0500, Keno Fischer wrote:
> Hi all,
> 
> The code in prctl(PR_SET_MM, ...) performs a number of sanity checks,
> among them
> 
> ```
> /*
>  * @brk should be after @end_data in traditional maps.
>  */
> if (prctl_map->start_brk <= prctl_map->end_data ||
>     prctl_map->brk <= prctl_map->end_data)
> goto out;
> ```
> 

Thanks for pointing, Keno! I don't remember the details right now,
gimme some time and once I refresh my memory I'll reply with
details.