Re: [PATCH 6.12] vsock/virtio: fix zerocopy completion for multi-skb sends
Sasha Levin <[email protected]> Sun, 19 Jul 2026 11:00:15 -0400
| Newsgroups | dev.linux.lists.virtualization,org.kernel.vger.kvm,org.kernel.vger.linux-kernel,org.kernel.vger.netdev,org.kernel.vger.stable |
|---|---|
| Message-ID | <[email protected]> |
> When a large message is fragmented into multiple skbs, the zerocopy > uarg is only allocated and attached to the last skb in the loop. > Non-final skbs carry pinned user pages with no completion tracking, > so the kernel has no way to notify userspace when those pages are safe > to reuse. Queued for 6.12, thanks. -- Thanks, Sasha