netdev - Re: [PATCH v2] KEYS: DNS: limit the length of option strings

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Date:   Wed, 07 Mar 2018 15:54:37 +0000
From:   David Howells <dhowells@...hat.com>
To:     Eric Biggers <ebiggers3@...il.com>
Cc:     dhowells@...hat.com, keyrings@...r.kernel.org,
        netdev@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
        Eric Biggers <ebiggers@...gle.com>
Subject: Re: [PATCH v2] KEYS: DNS: limit the length of option strings

Eric Biggers <ebiggers3@...il.com> wrote:

> Fix it by limiting option strings (combined name + value) to a much more
> reasonable 128 bytes.  The exact limit is arbitrary, but currently the
> only recognized option is formatted as "dnserror=%lu" which fits well
> within this limit.

There will be more options coming ("ipv4", "ipv6") but they shouldn't overrun
this limit and we can always extend the limit if need be.

David