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Subject: Re: [PATCH v4 2/6] proc/sysctl: Check for invalid flags bits
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     "Luis R. Rodriguez" <mcgrof@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        Al Viro <viro@zeniv.linux.org.uk>,
        Matthew Wilcox <willy@infradead.org>
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 <20180312135204.d56f7f1e64c96cf20786eb28@linux-foundation.org>
From:   Waiman Long <longman@redhat.com>
Organization: Red Hat
Message-ID: <42c1606b-304e-8cd5-d532-68a403a99dce@redhat.com>
Date:   Mon, 12 Mar 2018 18:12:47 -0400
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On 03/12/2018 04:52 PM, Andrew Morton wrote:
> On Mon, 12 Mar 2018 16:15:40 -0400 Waiman Long <longman@redhat.com> wrote:
>
>> Checking code is added to check for invalid flags in the ctl_table
>> and return error if an unknown flag is used.
> Why?  What's wrong with the old code, what value does this change add,
> etc.

This is an additional checking code requested by Luis.

Cheers,
Longman