netdev - Re: [PATCH] net/smc: loop in smc

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Message-ID: <ac52dbfe-edd9-dd8f-c2f8-a96fea10884d@linux.ibm.com>
Date:   Mon, 22 Nov 2021 08:28:33 +0100
From:   Karsten Graul <kgraul@...ux.ibm.com>
To:     Daxing Guo <guodaxing@...wei.com>, netdev@...r.kernel.org
Cc:     chenzhe@...wei.com, linux-s390@...r.kernel.org, greg@...ah.com
Subject: Re: [PATCH] net/smc: loop in smc_listen

On 20/11/2021 08:54, Daxing Guo wrote:
> From: Guo DaXing <guodaxing@...wei.com>
> 
> The kernel_listen function in smc_listen will fail when all the available
> ports are occupied.  At this point smc->clcsock->sk->sk_data_ready has 
> been changed to smc_clcsock_data_ready.  When we call smc_listen again, 
> now both smc->clcsock->sk->sk_data_ready and smc->clcsk_data_ready point 
> to the smc_clcsock_data_ready function.
> 
> The smc_clcsock_data_ready() function calls lsmc->clcsk_data_ready which 
> now points to itself resulting in an infinite loop.
> 
> This patch restores smc->clcsock->sk->sk_data_ready with the old value.
> 
> Signed-off-by: Guo DaXing <guodaxing@...wei.com>
> ---

Thanks for your patch, I will pick it up and submit it to the net tree.