Re: [PATCH net] net: drop pulled SKB_GSO_FRAGLIST skb

[Lena Wang (王娜)]

On Mon, 2024-04-29 at 09:25 -0400, Willem de Bruijn wrote:
>  	 
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>  shiming.cheng@ wrote:
> > From: Shiming Cheng <shiming.cheng@xxxxxxxxxxxx>
> > 
> > A SKB_GSO_FRAGLIST skb without GSO_BY_FRAGS is
> > expected to have all segments except the last
> > to be gso_size long. If this does not hold, the
> > skb has been modified and the fraglist gso integrity
> > is lost. Drop the packet, as it cannot be segmented
> > correctly by skb_segment_list.
> > 
> > The skb could be salvaged. By linearizing, dropping
> > the SKB_GSO_FRAGLIST bit and entering the normal
> > skb_segment path rather than the skb_segment_list path.
> > 
> > That choice is currently made in the protocol caller,
> > __udp_gso_segment. It's not trivial to add such a
> > backup path here. So let's add this backstop against
> > kernel crashes.
> > 
> > Fixes: 3a1296a38d0c ("net: Support GRO/GSO fraglist chaining.")
> > Signed-off-by: Shiming Cheng <shiming.cheng@xxxxxxxxxxxx>
> > Signed-off-by: Lena Wang <lena.wang@xxxxxxxxxxxx>
> 
> Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>

Dear experts,
Could you please help to update the upstream progress?

Thanks
Lena