Hello:
This patch was applied to netdev/net.git (main)
by Paolo Abeni [off-list ref]:
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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