netdev - Re: [PATCH bpf v2] xsk: fix broken Tx ring validation

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Date:   Fri, 18 Jun 2021 15:10:03 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Magnus Karlsson <magnus.karlsson@...il.com>
Cc:     magnus.karlsson@...el.com, bjorn@...nel.org, ast@...nel.org,
        daniel@...earbox.net, netdev@...r.kernel.org,
        maciej.fijalkowski@...el.com, jonathan.lemon@...il.com,
        bpf@...r.kernel.org, xuanzhuo@...ux.alibaba.com
Subject: Re: [PATCH bpf v2] xsk: fix broken Tx ring validation

Hello:

This patch was applied to bpf/bpf.git (refs/heads/master):

On Fri, 18 Jun 2021 09:58:05 +0200 you wrote:
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Fix broken Tx ring validation for AF_XDP. The commit under the Fixes
> tag, fixed an off-by-one error in the validation but introduced
> another error. Descriptors are now let through even if they straddle a
> chunk boundary which they are not allowed to do in aligned mode. Worse
> is that they are let through even if they straddle the end of the umem
> itself, tricking the kernel to read data outside the allowed umem
> region which might or might not be mapped at all.
> 
> [...]

Here is the summary with links:
  - [bpf,v2] xsk: fix broken Tx ring validation
    https://git.kernel.org/bpf/bpf/c/f654fae47e83

You are awesome, thank you!
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