* Re: GKI: [kernel6.1] Kernel panic on __udpv4_gso_segment_list_csum in rx-udp-gro-forwarding
[not found] ` <7b3d9af8fafa18050cb5f5f7afc241baccbbb3cf.camel@redhat.com>
@ 2023-10-27 9:54 ` Lena Wang (王娜)
0 siblings, 0 replies; only message in thread
From: Lena Wang (王娜) @ 2023-10-27 9:54 UTC (permalink / raw)
To: pabeni; +Cc: cmllamas, netdev, eric.dumazet, maze, linux-kernel
On Fri, 2023-10-27 at 11:12 +0200, Paolo Abeni wrote:
>
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> On Fri, 2023-10-27 at 08:17 +0000, Lena Wang (王娜) wrote:
> > Sorry. I don't use netdev ML before. I do have a google partner
> account
> > lena.wang@mediatek.corp-partner.google.com, it is justed used to
> report
> > Google bug and don't know how to send a email. I try to use text
> formal
> > to reply mail.
>
> I'm sorry if the following can sound not very polite, but really you
> have to move this conversation on the netdev ML or to the google
> support.
>
> Cheers,
>
> Paolo
>
Hi Paolo,
Sorry, I add the netdev in cc and if it is on netdev ML.
==========================
I have merged your patch in the load and the kernel panic happens with
your patch. The crashed skb with cloned = 0 and users = 2. I am afraid
the patch doesn't work because the shared skb is not checked.
I am not sure if you could submit your previous patch with:
+ if (WARN_ON_ONCE(skb_shared(skb))) {
+ skb =
skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ goto err_linearize;
+ }
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index cea28d30abb5..1b2394ebaf33 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4270,6 +4270,17 @@ struct sk_buff *skb_segment_list(struct sk_buff
*skb,
skb_push(skb, -skb_network_offset(skb) + offset);
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