linux-kernel - Re: [PATCH] scsi: fcoe: add missed kfree() in an error path

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Date:   Thu, 9 Jul 2020 10:11:38 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     Markus Elfring <Markus.Elfring@....de>,
        <linux-scsi@...r.kernel.org>
CC:     <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Hannes Reinecke" <hare@...e.de>,
        "James E. J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Neerav Parikh <Neerav.Parikh@...el.com>,
        Robert Love <robert.w.love@...el.com>
Subject: Re: [PATCH] scsi: fcoe: add missed kfree() in an error path



On 2020/7/7 19:38, Markus Elfring wrote:
>> fcoe_fdmi_info() misses to call kfree() in an error path.
>> Add the missed function call to fix it.
>
> I suggest to use an additional jump target for the completion
> of the desired exception handling.
>
>
> …
>> +++ b/drivers/scsi/fcoe/fcoe.c
>> @@ -830,6 +830,7 @@ static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev)
>>   		if (rc) {
>>   			printk(KERN_INFO "fcoe: Failed to retrieve FDMI "
>>   					"information from netdev.\n");
>> +			kfree(fdmi);
>>   			return;
>>   		}
>
> -			return;
> +			goto free_fdmi;
>
>
> How do you think about to apply any further coding style adjustments?

The local variable "fdmi" is invisible to the function.
See fcoe_fdmi_info().

	Thanks
>
> Regards,
> Markus
> .
>