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From:   Eric Dumazet <edumazet@google.com>
Date:   Tue, 1 Mar 2022 17:22:54 -0800
Message-ID: <CANn89iLZUWpFC-kAfEbNwh4GDKM+975e_VugmWWT2DNK5K2mAQ@mail.gmail.com>
Subject: Re: [PATCH net v2] net: fix up skbs delta_truesize in UDP GRO frag_list
To:     lena wang <lena.wang@mediatek.com>
Cc:     Paolo Abeni <pabeni@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Willem de Bruijn <willemb@google.com>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Dongseok Yi <dseok.yi@samsung.com>, wsd_upstream@mediatek.com,
        netdev <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-mediatek@lists.infradead.org
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On Tue, Mar 1, 2022 at 3:23 AM lena wang <lena.wang@mediatek.com> wrote:
>
> The truesize for a UDP GRO packet is added by main skb and skbs in main
> skb's frag_list:
> skb_gro_receive_list
>         p->truesize += skb->truesize;
>
>
>
> Fixes: 53475c5dd856 ("net: fix use-after-free when UDP GRO with shared fraglist")
> Signed-off-by: lena wang <lena.wang@mediatek.com>
> Acked-by: Paolo Abeni <pabeni@redhat.com>
> ---
> change since v1:
> 1) add the fix tag.
> 2) add net subtree to the subject
> ---
> ---
>  net/core/skbuff.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>

Reviewed-by: Eric Dumazet <edumazet@google.com>