Subject: Re: [PATCH bpf-next 0/2] double-fix bpf_test_run + XDP_PASS recycling

From: [email-masked]
Date: Fri, 17 Mar 2023 05:30:17 +0000

Hello:

This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <[email-masked]>:

On Thu, 16 Mar 2023 18:50:49 +0100 you wrote:
> Enabling skb PP recycling revealed a couple issues in the bpf_test_run
> code. Recycling broke the assumption that the headroom won't ever be
> touched during the test_run execution: xdp_scrub_frame() invalidates the
> XDP frame at the headroom start, while neigh xmit code overwrites 2 bytes
> to the left of the Ethernet header. The first makes the kernel panic in
> certain cases, while the second breaks xdp_do_redirect selftest on BE.
> test_run is a limited-scope entity, so let's hope no more corner cases
> will happen here or at least they will be as easy and pleasant to fix
> as those two.
> 
> [...]

Here is the summary with links:
  - [bpf-next,1/2] bpf, test_run: fix crashes due to XDP frame overwriting/corruption
    https://git.kernel.org/bpf/bpf-next/c/e5995bc7e2ba
  - [bpf-next,2/2] selftests/bpf: fix "metadata marker" getting overwritten by the netstack
    https://git.kernel.org/bpf/bpf-next/c/5640b6d89434

You are awesome, thank you!
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