Hello:
This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Fri, 15 Jul 2022 19:55:59 +0800 you wrote:
> Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any
> skbs, that is, the flow->head is null.
> The root cause, as the [2] says, is because that bpf_prog_test_run_skb()
> run a bpf prog which redirects empty skbs.
> So we should determine whether the length of the packet modified by bpf
> prog or others like bpf_prog_test is valid before forwarding it directly.
>
> [...]
Here is the summary with links:
- [v4,bpf-next] bpf: Don't redirect packets with invalid pkt_len
https://git.kernel.org/bpf/bpf-next/c/fd1894224407
You are awesome, thank you!
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