[lvc-project] [PATCH 6.12] vsock/virtio: fix zerocopy completion for multi-skb sends

Sasha Levin sashal at kernel.org
Sun Jul 19 18:00:15 MSK 2026


> 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



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