linux-kernel - Re: [PATCH v2] crypto: ccp - Release all allocated memory if sha type is invalid

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Message-ID: <e32d4067-f115-5613-f8c8-51449a2bd9b9@amd.com>
Date:   Thu, 19 Sep 2019 17:00:39 +0000
From:   Gary R Hook <ghook@....com>
To:     Navid Emamdoost <navid.emamdoost@...il.com>
CC:     "emamd001@....edu" <emamd001@....edu>,
        "smccaman@....edu" <smccaman@....edu>,
        "kjlu@....edu" <kjlu@....edu>,
        "Lendacky, Thomas" <Thomas.Lendacky@....com>,
        "Hook, Gary" <Gary.Hook@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] crypto: ccp - Release all allocated memory if sha type
 is invalid



On 9/19/19 11:04 AM, Navid Emamdoost wrote:
> Release all allocated memory if sha type is invalid:
> In ccp_run_sha_cmd, if the type of sha is invalid, the allocated
> hmac_buf should be released.
>
> v2: fix the goto.
>
> Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>

Acked-by: Gary R Hook <gary.hook@....com>

> ---
>   drivers/crypto/ccp/ccp-ops.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c
> index 9bc3c62157d7..440df9208f8f 100644
> --- a/drivers/crypto/ccp/ccp-ops.c
> +++ b/drivers/crypto/ccp/ccp-ops.c
> @@ -1782,8 +1782,9 @@ static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
>   			       LSB_ITEM_SIZE);
>   			break;
>   		default:
> +			kfree(hmac_buf);
>   			ret = -EINVAL;
> -			goto e_ctx;
> +			goto e_data;
>   		}
>   
>   		memset(&hmac_cmd, 0, sizeof(hmac_cmd));