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SubjectRe: [PATCH] crypto: ccp - release hmac_buf if ccp_run_sha_cmd fails
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On 9/16/19 8:22 AM, Lendacky, Thomas wrote:
> On 9/13/19 6:48 PM, Navid Emamdoost wrote:
>> In ccp_run_sha_cmd, if the type of sha is invalid, the allocated
>> hmac_buf should be released.
>>
>> Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
>> ---
>> drivers/crypto/ccp/ccp-ops.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c
>> index 9bc3c62157d7..cff16f0cc15b 100644
>> --- a/drivers/crypto/ccp/ccp-ops.c
>> +++ b/drivers/crypto/ccp/ccp-ops.c
>> @@ -1782,6 +1782,7 @@ static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
>> LSB_ITEM_SIZE);
>> break;
>> default:
>> + kfree(hmac_buf);
> Well, theoretically we can never reach this section since the routine
> would have never proceeded past the first switch statement at the
> beginning of the function. But, if the code is ever modified and some of
> the switch statements missed then it's possible...
>
>> ret = -EINVAL;
>> goto e_ctx;
> I know it's not part of your change, but this looks like it should be
> goto e_data instead of e_ctx, too.
I agree with this. Please resubmit with the suggested change, and use a
commit message along the the lines of

crypto: ccp - Release all allocated memory if sha type is invalid


Gary
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