Hi,

with make check -C build-asan TESTSUITEFLAGS="-k meter -d"
the ovs is build with asan enabled, is this feature already in current
building system?

I did not find it. Can anyone give some hint?
Thanks !


David Marchand <david.march...@redhat.com> 于2022年4月7日周四 02:55写道:

> On Sat, Mar 26, 2022 at 3:43 AM Peng He <xnhp0...@gmail.com> wrote:
> >
> > add a rcu_barrier before close_dpif_backer to ensure that
> > all meters has been freed before id_pool_destory meter's
> > id-pool.
> >
> > Signed-off-by: Peng He <hepeng.0...@bytedance.com>
>
> On the principle, the issue seems fixed.
> And I have been running successfully 'make check -C build-asan
> TESTSUITEFLAGS="-k meter -d"' in a loop for some time tonight.
>
> This usually fails after 1h on origin/master.
>
>
> I'll let a simplified version of the patch (see below) run for the
> whole night after sending this mail.
>
> Why a simplified patch? Because I don't think we need a new rcu api.
> This issue only occurs with ofproto dpif implementation.
> Adding a new api might encourage people to use it even if unneeded in
> more simpler places in OVS.
>
> I squashed your series into:
>
> diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
> index 6601f2346..402cdcdf5 100644
> --- a/ofproto/ofproto-dpif.c
> +++ b/ofproto/ofproto-dpif.c
> @@ -1805,6 +1805,7 @@ destruct(struct ofproto *ofproto_, bool del)
>      struct rule_dpif *rule;
>      struct oftable *table;
>      struct ovs_list ams;
> +    struct seq *seq;
>
>      ofproto->backer->need_revalidate = REV_RECONFIGURE;
>      xlate_txn_start();
> @@ -1848,6 +1849,14 @@ destruct(struct ofproto *ofproto_, bool del)
>
>      seq_destroy(ofproto->ams_seq);
>
> +    /* Wait for all the meter rules to be destroyed. */
> +    seq = seq_create();
> +    ovsrcu_synchronize();
> +    seq_wait(seq, seq_read(seq));
> +    ovsrcu_postpone__((void (*)(void *))seq_change, seq);
> +    poll_block();
> +    seq_destroy(seq);
> +
>      close_dpif_backer(ofproto->backer, del);
>  }
>
> Let's hope it passes the night tests :-).
>
>
> --
> David Marchand
>
>

-- 
hepeng
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