Hello:
This patch was applied to netdev/net.git (main)
by Paolo Abeni <[email protected]>:
On Thu, 4 Jun 2026 19:59:38 +0300 you wrote:
> netvsc_copy_to_send_buf() copies page buffer entries into the VMBus
> send buffer using phys_to_virt() on the entry PFN. Entries for the
> RNDIS header and the skb linear data come from kmalloc'd memory and
> are always in the kernel direct map, but entries for skb fragments
> reference page cache or user pages, which on 32-bit x86 with
> CONFIG_HIGHMEM=y can live above the LOWMEM boundary. For such a page
> phys_to_virt() returns an address outside the direct map and the
> subsequent memcpy() faults on the transmit softirq path, which is
> fatal.
>
> [...]
Here is the summary with links:
- [net,v3] hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf
https://git.kernel.org/netdev/net/c/004e9ecfe6c5
You are awesome, thank you!
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