Re: [PATCH v3] net/sched: cake: reject overhead values that underflow length

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@xxxxxxxxxx>:

On Thu,  2 Jul 2026 00:07:59 +0000 you wrote:
> CAKE accepts signed overhead values and stores them in an s16, but the
> adjusted packet length calculation uses unsigned arithmetic.  A negative
> effective length can therefore wrap to a large value.
> 
> Such configurations make rate accounting depend on integer wraparound
> rather than on the packet size userspace intended to model.  A static
> netlink lower bound is not enough because packets reaching CAKE can be
> smaller than any reasonable manual-overhead allowance.
> 
> [...]

Here is the summary with links:
  - [v3] net/sched: cake: reject overhead values that underflow length
    https://git.kernel.org/netdev/net/c/b7f97cae7ec1

You are awesome, thank you!
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