Re: [PATCH net] ppp: linearize bridged packets when required

[Qingfang Deng]

On 2026/10/21 10:39, netdev-bot+sinfo@xxxxxxxxxx wrote:
> Hi!
>
> This is an automated message. This series looks like a fix, but its
> commit messages seem to be missing some information:
>
>   - Whether the issue was actually triggered, or is only theoretical
>     (e.g. found by code inspection). If it was triggered please include
>     the symptoms, like the stack trace or error messages.

This is reproduced in a VM, with a TAP interface bridged to a PTY. When 
IFF_NAPI_FRAGS is set, a non-linear skb is passed to PPPoE and then to 
ppp_async_send() without linearization. The packet sent to the PTY then 
contains garbage data.

> Please do not repost the series just to address the above. Instead,
> reply to this email with the missing information, so that reviewers
> can take it into account. If the series needs another revision for
> other reasons, please include the information in the commit messages
> then.
>
> The evaluation is done by an LLM so it may be wrong, if you think
> that is the case please reply and explain.