Re: [PATCH net v3 0/8] more virtio-net csum hardening

[Michael S. Tsirkin]

On Mon, Oct 19, 2026 at 12:09:19PM +0000, 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.
> 
> 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.

To answer the question, the virtio header is checked at input by
Eric's patch. I'm not aware of a way to bypass that, but given
the amount of pain and work this is causing, it seems prudent
to validate at several levels.

Patch 4 is a bugfix - i reproduced it easily but it is not normally
encountered in the field - the combination is non practical.

-- 
MST