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Date:   Fri, 28 Oct 2022 11:13:14 -0700
From:   Eric Dumazet <>
To:     Dan Carpenter <>
Cc:     Jamal Hadi Salim <>,
        Cong Wang <>,
        Toke Høiland-Jørgensen <>,
        Jiri Pirko <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,,,
        Harshit Mogalapalli <>
Subject: Re: [PATCH net] net: sched: Fix use after free in red_enqueue()

On Fri, Oct 28, 2022 at 8:05 AM Dan Carpenter <> wrote:
> We can't use "skb" again after passing it to qdisc_enqueue().  This is
> basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb
> len before calling child enqueue").
> Fixes: d7f4f332f082 ("sch_red: update backlog as well")

Reviewed-by: Eric Dumazet <>

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