Hello:
This patch was applied to netdev/net.git (master) by Paolo Abeni pabeni@redhat.com:
On Mon, 25 Apr 2022 13:37:03 +0300 you wrote:
We received a report[1] of kernel crashes when Cilium is used in XDP mode with virtio_net after updating to newer kernels. After investigating the reason it turned out that when using mergeable bufs with an XDP program which adjusts xdp.data or xdp.data_meta page_to_buf() calculates the build_skb address wrong because the offset can become less than the headroom so it gets the address of the previous page (-X bytes depending on how lower offset is): page_to_skb: page addr ffff9eb2923e2000 buf ffff9eb2923e1ffc offset 252 headroom 256
[...]
Here is the summary with links: - [net,v3] virtio_net: fix wrong buf address calculation when using xdp https://git.kernel.org/netdev/net/c/acb16b395c3f
You are awesome, thank you!