linux-kernel - Re: [PATCH v4 5/6] ipc: Clamp semmni to the real IPCMNI limit

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Message-ID: <20180312205235.GB4449@wotan.suse.de>
Date:   Mon, 12 Mar 2018 20:52:35 +0000
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>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v4 5/6] ipc: Clamp semmni to the real IPCMNI limit

On Mon, Mar 12, 2018 at 04:15:43PM -0400, Waiman Long wrote:
> +	if (clamped)
> +		pr_warn_once("sysctl: \"sem[3]\" was set out of range [%d, %d], clamped to %d.\n",
> +			     0, IPCMNI, ns->sc_semmni);

Why warn if the kernel already does that? If we can avoid more code on
drivers the better.

  Luis