linux-kernel - Re: [PATCH v4 2/6] proc/sysctl: Check for invalid flags bits

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Message-ID: <42c1606b-304e-8cd5-d532-68a403a99dce@redhat.com>
Date:   Mon, 12 Mar 2018 18:12:47 -0400
From:   Waiman Long <longman@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Al Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v4 2/6] proc/sysctl: Check for invalid flags bits

On 03/12/2018 04:52 PM, Andrew Morton wrote:
> On Mon, 12 Mar 2018 16:15:40 -0400 Waiman Long <longman@...hat.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