linux-kernel - Re: [PATCH net-next] cxgb4: Check for kvzalloc allocation failure

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Message-Id: <20180524.215225.1188038676378368123.davem@davemloft.net>
Date:   Thu, 24 May 2018 21:52:25 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     yuehaibing@...wei.com
Cc:     ganeshgr@...lsio.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next] cxgb4: Check for kvzalloc allocation failure

From: YueHaibing <yuehaibing@...wei.com>
Date: Fri, 25 May 2018 09:39:20 +0800

> On 2018/5/24 23:07, David Miller wrote:
>> From: YueHaibing <yuehaibing@...wei.com>
>> Date: Tue, 22 May 2018 15:07:18 +0800
>> 
>>> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
>>> index 130d1ee..019cffe 100644
>>> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
>>> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
>>> @@ -4135,6 +4135,10 @@ static int adap_init0(struct adapter *adap)
>>>  		 * card
>>>  		 */
>>>  		card_fw = kvzalloc(sizeof(*card_fw), GFP_KERNEL);
>>> +		if (!card_fw) {
>>> +			ret = -ENOMEM;
>>> +			goto bye;
>>> +		}
>>>  
>> 
>> On error, this leaks fw_info.
> 
> Hi David,
> 
> I checked fw_info is an element of fw_info_array，there all members of struct fw_info no need free.

Aha, I misread the code, sorry.

Applied, thanks.