linux-kernel - Re: [PATCH v8 1/5] ipc: IPCMNI limit check for msgmni and shmmni

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Date:   Thu, 28 Jun 2018 05:16:06 +0200
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
        Al Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Takashi Iwai <tiwai@...e.de>, Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH v8 1/5] ipc: IPCMNI limit check for msgmni and shmmni

On Mon, Jun 18, 2018 at 06:28:14PM +0800, Waiman Long wrote:
> A user can write arbitrary integer values to msgmni and shmmni sysctl
> parameters without getting error, but the actual limit is really
> IPCMNI (32k). This can mislead users as they think they can get a
> value that is not real.
> 
> The right limits are now set for msgmni and shmmni so that the users
> will become aware if they set a value outside of the acceptable range.
> 
> Signed-off-by: Waiman Long <longman@...hat.com>

Acked-by: Luis R. Rodriguez <mcgrof@...nel.org>

  Luis