Re: [PATCH] virtiofs: add FUSE protocol validation

[Miklos Szeredi]

On Mon, 16 Feb 2026 at 08:32, Yuto Ohnuki <ytohnuki@xxxxxxxxxx> wrote:
>
> Add virtio_fs_verify_response() to validate that the server properly
> follows the FUSE protocol by checking:
>
> - Response length is at least sizeof(struct fuse_out_header).
> - oh.len matches the actual response length.
> - oh.unique matches the request's unique identifier.
>
> On validation failure, set error to -EIO and normalize oh.len to prevent
> underflow in copy_args_from_argbuf().
>
> Addresses the TODO comment in virtio_fs_request_complete().
>
> Signed-off-by: Yuto Ohnuki <ytohnuki@xxxxxxxxxx>

Applied, thanks.

Miklos