linux-kernel - Re: [patch] crypto: ccp - Free ccp if initialization fails

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Date:   Mon, 24 Jun 2019 14:58:17 +0000
From:   Gary R Hook <ghook@....com>
To:     "Lendacky, Thomas" <Thomas.Lendacky@....com>,
        David Rientjes <rientjes@...gle.com>,
        "Hook, Gary" <Gary.Hook@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>
CC:     "Singh, Brijesh" <brijesh.singh@....com>,
        Cfir Cohen <cfir@...gle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>
Subject: Re: [patch] crypto: ccp - Free ccp if initialization fails

On 6/24/19 8:04 AM, Lendacky, Thomas wrote:
> On 6/23/19 2:18 PM, David Rientjes wrote:
>> If ccp_dev_init() fails, kfree() the allocated ccp since it will otherwise
>> be leaked.
> 
> Not needed. It's allocated with devm_kzalloc(), so it won't be leaked.
> 
> Thanks,
> Tom

Nacked-By: Gary R Hook <gary.hook@....com>

> 
>>
>> Fixes: 720419f01832 ("crypto: ccp - Introduce the AMD Secure Processor
>> device")
>>
>> Reported-by: Cfir Cohen <cfir@...gle.com>
>> Signed-off-by: David Rientjes <rientjes@...gle.com>
>> ---
>>   drivers/crypto/ccp/ccp-dev.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
>> --- a/drivers/crypto/ccp/ccp-dev.c
>> +++ b/drivers/crypto/ccp/ccp-dev.c
>> @@ -609,6 +609,7 @@ int ccp_dev_init(struct sp_device *sp)
>>   
>>   e_err:
>>   	sp->ccp_data = NULL;
>> +	kfree(ccp);
>>   
>>   	dev_notice(dev, "ccp initialization failed\n");
>>   
>>