From: sashiko-bot@kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: virtualization@lists.linux.dev, "Eugenio Perez" <eperezma@redhat.com>
Subject: Re: [PATCH RFC v7 2/5] um: vector: trim skbs before verifying the header
Date: Fri, 30 Oct 2026 18:54:09 +0000 [thread overview]
Message-ID: <sashiko-outbox-191418@kernel.org> (raw)
In-Reply-To: <d5a36cae5997d36ae6b4bb192a251194e61a8a2f.1793276116.git.mst@redhat.com>
> The vector receive path over-allocates the skb and only trims it
> to the received length after the transport header is verified.
>
> A follow up patch will complete the packet checksum in software within
> virtio_net_hdr_to_skb so we need the packet trimmed (otherwise the
> checksum would be computed incorrectly over the unreceived tail of the
> buffer).
>
> Trim first, so the import sees the packet as it was received.
>
> Reviewed-by: Willem de Bruijn <willemb@google.com>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/305bcadb19f4a539a318c6b87c829fbe43d0ffdb.1793276116.git.mst@redhat.com?part=2
next prev parent reply other threads:[~2026-10-30 18:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-04 11:59 [PATCH RFC v7 0/5] more virtio-net csum hardening Michael S. Tsirkin
2026-10-29 18:53 ` [PATCH RFC v7 1/5] net: account for ingress-resolved virtio net hdr state Michael S. Tsirkin
2026-10-30 18:54 ` sashiko-bot
2026-10-29 18:53 ` [PATCH RFC v7 2/5] um: vector: trim skbs before verifying the header Michael S. Tsirkin
2026-10-30 18:54 ` sashiko-bot [this message]
2026-10-29 18:53 ` [PATCH RFC v7 3/5] virtio_net: parse tunnel csum_start little-endian Michael S. Tsirkin
2026-10-30 18:54 ` sashiko-bot
2026-10-29 18:53 ` [PATCH RFC v7 4/5] net: resolve uncommon partial checksums at ingress Michael S. Tsirkin
2026-10-30 18:54 ` sashiko-bot
2026-10-30 19:21 ` Willem de Bruijn
2026-10-30 22:49 ` Michael S. Tsirkin
2026-10-30 21:28 ` Chris Arges
2026-10-29 18:53 ` [PATCH RFC v7 5/5] net: add a sysctl to opt out of virtio net hdr checksum validation Michael S. Tsirkin
2026-10-30 18:54 ` sashiko-bot
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