Re: [PATCH NETFILTER] netfilter: nfnetlink: suspicious RCU usage in ctnetlink_dump_helpinfo

From: Vasily Averin
Date: Wed Jun 30 2021 - 08:30:40 EST


On 6/30/21 3:09 PM, Pablo Neira Ayuso wrote:
>
> On Wed, Jun 30, 2021 at 11:49:49AM +0200, Florian Westphal wrote:
>> Vasily Averin <vvs@xxxxxxxxxxxxx> wrote:
>>> Two patches listed below removed ctnetlink_dump_helpinfo call from under
>>> rcu_read_lock. Now its rcu_dereference generates following warning:
>>> =============================
>>> WARNING: suspicious RCU usage
>>> 5.13.0+ #5 Not tainted
>>> -----------------------------
>>> net/netfilter/nf_conntrack_netlink.c:221 suspicious rcu_dereference_check() usage!
>>
>> Reviewed-by: Florian Westphal <fw@xxxxxxxxx>
>
> I don't see this patch in netfilter's patchwork nor in
> netfilter-devel@xxxxxxxxxxxxxxx
>
> Where did they go?

My original letter was graylisted.

"
A message that you sent could not be delivered to one or more of its
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"
I'm expect it will be re-send in few hours.
othrevise I'll resend it once again via another mail server.

Thank you,
Vasily Averin