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SubjectRe: [PATCH] media: vsp1: fix memory leak of dl on error return path
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On 29/07/2019 13:12, Colin Ian King wrote:
> On 29/07/2019 13:11, Kieran Bingham wrote:
>> Hi Colin,
>>
>> On 28/07/2019 18:11, Colin King wrote:
>>> From: Colin Ian King <colin.king@canonical.com>
>>>
>>> Currently when the call vsp1_dl_body_get fails and returns null the
>>> error return path leaks the allocation of dl. Fix this by kfree'ing
>>> dl before returning.
>>
>> Eeep. This does indeed look to be the case.
>>
>>>
>>> Addresses-Coverity: ("Resource leak")
>>> Fixes: 5d7936b8e27d ("media: vsp1: Convert display lists to use new body pool")
>>> Signed-off-by: Colin Ian King <colin.king@canonical.com>
>>
>> Thank you!
>
> Thank static analysis :-)

Bah, that's just the hammer - you're the one finding the nails :-D
--
Kieran


>
>>
>> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
>>
>>
>>> ---
>>> drivers/media/platform/vsp1/vsp1_dl.c | 4 +++-
>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c
>>> index 104b6f514536..d7b43037e500 100644
>>> --- a/drivers/media/platform/vsp1/vsp1_dl.c
>>> +++ b/drivers/media/platform/vsp1/vsp1_dl.c
>>> @@ -557,8 +557,10 @@ static struct vsp1_dl_list *vsp1_dl_list_alloc(struct vsp1_dl_manager *dlm)
>>>
>>> /* Get a default body for our list. */
>>> dl->body0 = vsp1_dl_body_get(dlm->pool);
>>> - if (!dl->body0)
>>> + if (!dl->body0) {
>>> + kfree(dl);
>>> return NULL;
>>> + }
>>>
>>> header_offset = dl->body0->max_entries * sizeof(*dl->body0->entries);
>>>
>>>
>>
>

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