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From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Keno Fischer <keno@juliacomputing.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	mkoutny@suse.com, ktkhai@virtuozzo.com
Subject: Re: brk checks in PR_SET_MM code
Date: Thu, 17 Dec 2020 10:42:02 +0300	[thread overview]
Message-ID: <20201217074202.GD14556@grain> (raw)
In-Reply-To: <CABV8kRwoHAAdez8k60O+AJ9E3g5_PM0F6tpbpB9dC115_FD3Eg@mail.gmail.com>

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.

  reply	other threads:[~2020-12-17  7:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-17  1:29 brk checks in PR_SET_MM code Keno Fischer
2020-12-17  7:42 ` Cyrill Gorcunov [this message]
2020-12-17 21:28   ` Cyrill Gorcunov

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