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

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Date:   Wed, 10 Nov 2021 14:50:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Dust Li <dust.li@...ux.alibaba.com>
Cc:     kgraul@...ux.ibm.com, ubraun@...ux.vnet.ibm.com,
        tonylu@...ux.alibaba.com, guwen@...ux.alibaba.com,
        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

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Wed, 10 Nov 2021 15:02:34 +0800 you 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:
> 
> __smc_lgr_terminate()
>  --> smc_conn_kill()
>     --> smc_close_active_abort()
>            smc_sock->sk_state = SMC_CLOSED
>            sock_put(smc_sock)
> 
> [...]

Here is the summary with links:
  - [net] net/smc: fix sk_refcnt underflow on linkdown and fallback
    https://git.kernel.org/netdev/net/c/e5d5aadcf3cd

You are awesome, thank you!
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