netdev - Re: [PATCH net] net/smc: fix sk_refcnt underflow on linkdown and fallback

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Message-ID: <0b6d5916-fad0-ccc1-9c37-21a92ffa8293@linux.ibm.com>
Date:   Wed, 10 Nov 2021 14:14:56 +0100
From:   Karsten Graul <kgraul@...ux.ibm.com>
To:     Dust Li <dust.li@...ux.alibaba.com>,
        Ursula Braun <ubraun@...ux.vnet.ibm.com>
Cc:     Tony Lu <tonylu@...ux.alibaba.com>, guwen@...ux.alibaba.com,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        linux-s390@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net] net/smc: fix sk_refcnt underflow on linkdown and
 fallback

On 10/11/2021 08:02, Dust Li wrote:
> We got the following WARNING when running ab/nginx
> test with RDMA link flapping (up-down-up).
> The reason is when smc_sock fallback and at linkdown
> happens simultaneously, we may got the following situation:
> 
<snip>


Acked-by: Karsten Graul <kgraul@...ux.ibm.com>