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Date:   Mon, 29 Aug 2022 12:10:17 +0000
To:     Jakub Kicinski <>
Subject: Re: [PATCH net-next] genetlink: start to validate reserved header bytes


This patch was applied to netdev/net-next.git (master)
by David S. Miller <>:

On Wed, 24 Aug 2022 17:18:30 -0700 you wrote:
> We had historically not checked that genlmsghdr.reserved
> is 0 on input which prevents us from using those precious
> bytes in the future.
> One use case would be to extend the cmd field, which is
> currently just 8 bits wide and 256 is not a lot of commands
> for some core families.
> [...]

Here is the summary with links:
  - [net-next] genetlink: start to validate reserved header bytes

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