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 [off-list ref]:

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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