Title should be: "ofproto-dpif: Fix meter use-after-free."

On Wed, May 25, 2022 at 3:36 AM Peng He <xnhp0...@gmail.com> wrote:
>
> add a rcu_barrier before close_dpif_backer to ensure that

Add*

> all meters has been freed before id_pool_destory meter's

have*

> id-pool.
>
> Signed-off-by: Peng He <hepeng.0...@bytedance.com>
> Tested-by: David Marchand <david.march...@redhat.com>
> Acked-by: Eelco Chaudron <echau...@redhat.com>
> ---
>  ofproto/ofproto-dpif.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
> index 6601f2346..0d0d985f0 100644
> --- a/ofproto/ofproto-dpif.c
> +++ b/ofproto/ofproto-dpif.c
> @@ -1848,6 +1848,8 @@ destruct(struct ofproto *ofproto_, bool del)
>
>      seq_destroy(ofproto->ams_seq);
>
> +    /* Wait for all the meter destroy work to finish */

to finish.*


> +    ovsrcu_barrier();
>      close_dpif_backer(ofproto->backer, del);
>  }
>
> --
> 2.25.1
>

Reviewed-by: David Marchand <david.march...@redhat.com>


-- 
David Marchand

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