On 28/08/16 20:17, Joe Perches wrote:
> On Sun, 2016-08-28 at 19:39 +0200, Nicolas Iooss wrote:
>> In sst_prepare_and_post_msg(), when a response is received in "block",
>> the following code gets executed:
>>
>> *data = kzalloc(block->size, GFP_KERNEL);
>> memcpy(data, (void *) block->data, block->size);
>>
>> The memcpy() call overwrites the content of the *data pointer instead of
>> filling the newly-allocated memory (which pointer is hold by *data).
>> Fix this by using *data in the memcpy() call.
>>
>> Fixes: 60dc8dbacb00 ("ASoC: Intel: sst: Add some helper functions")
>> Cc: [email protected] # 3.19.x
>> Signed-off-by: Nicolas Iooss <[email protected]>
>> ---
>> sound/soc/intel/atom/sst/sst_pvt.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/sound/soc/intel/atom/sst/sst_pvt.c
>> b/sound/soc/intel/atom/sst/sst_pvt.c
>> index adb32fefd693..7c398b7c9d4b 100644
>> --- a/sound/soc/intel/atom/sst/sst_pvt.c
>> +++ b/sound/soc/intel/atom/sst/sst_pvt.c
>> @@ -289,7 +289,7 @@ int sst_prepare_and_post_msg(struct intel_sst_drv *sst,
>> ret = -ENOMEM;
>> goto out;
>> } else
>> - memcpy(data, (void *) block->data, block->size);
>> + memcpy(*data, (void *) block->data,
>> block->size);
>> }
>> }
>> out:
>
> Perhaps this would be nicer using kmemdup too
Thanks for your quick reply! I agree using kmemdup looks nicer here and
your patch looks good. I will send a v2 once I compile-tested it.
Nicolas
