linux-kernel - Re: [PATCH v2] net: missing check virtio

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Date: Tue, 18 Jun 2024 17:45:00 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Denis Arefev <arefev@...mel.ru>
Cc: jiri@...nulli.us, edumazet@...gle.com, eperezma@...hat.com,
 jasowang@...hat.com, linux-kernel@...r.kernel.org,
 lvc-project@...uxtesting.org, mst@...hat.com, netdev@...r.kernel.org,
 virtualization@...ts.linux.dev, xuanzhuo@...ux.alibaba.com
Subject: Re: [PATCH v2] net: missing check virtio

On Fri, 14 Jun 2024 13:18:26 +0300 Denis Arefev wrote:
> Yeah, I was thinking of adding Fixes: 
> 
> But this code is new, it complements what is done.
> 1. check (!(ret && (hdr->gso_size > needed) &&
>                ((remainder > needed) || (remainder == 0)))) 
>  complements comit 0f6925b3e8da0
> 
> 2. The setting of the SKBFL_SHARED_FRAG flag can be associated with this comit cef401de7be8c.
> In the skb_checksum_help function, a check for skb_has_shared_frag has been added.
> If the flag is not set, the skb buffer will remain non-linear, which is not good. 

The Fixes tag indicates how far back the bug would trigger.