linux-kernel - Re: [PATCH 1/5] skbuff: return -EMSGSIZE in skb_to

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Date:   Tue, 25 Apr 2017 10:47:31 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     Jason@...c4.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        David.Laight@...lab.com, kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH 1/5] skbuff: return -EMSGSIZE in skb_to_sgvec to
 prevent overflow

From: "Jason A. Donenfeld" <Jason@...c4.com>
Date: Tue, 25 Apr 2017 16:08:05 +0200

> This is a defense-in-depth measure in response to bugs like
> 4d6fa57b4dab0d77f4d8e9d9c73d1e63f6fe8fee.
> 
> Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>

Please refer to commits in the form:

$(SHA1_ID) ("Commit header line.")

That is, 12 bytes of SHA1_ID followed by the commit header line text
in both double quotes and parenthesis, like this:

4d6fa57b4dab ("macsec: avoid heap overflow in skb_to_sgvec")

Otherwise when changes get backported or applied to different trees,
they have different SHA1_ID values.  The commit header text removes
any and all ambiguity.

Thank you.