On 30/11/17 12:50, Dan Carpenter wrote:
> On Thu, Nov 30, 2017 at 07:14:45AM -0500, Frank Rowand wrote:
>> On 11/29/17 14:17, Colin King wrote:
>>> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>>>
>>> Currently if the call to of_resolve_phandles fails then then ovcs
>>> is not kfree'd on the error exit path. Rather than try and make
>>> the clean up exit path more convoluted, fix this by just kfree'ing
>>> ovcs at the point of error detection and exit via the same exit
>>> path.
>>>
>>> Detected by CoverityScan, CID#1462296 ("Resource Leak")
>>>
>>> Fixes: f948d6d8b792 ("of: overlay: avoid race condition between applying multiple overlays")
>
> The Fixes tag is wrong. It should be:
>
> Fixes: bd80e2555c5c ("of: overlay: Fix cleanup order in of_overlay_apply()")
Good catch. I'll send a V2.
Colin
>
>>> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>>> ---
>>> drivers/of/overlay.c | 4 +++-
>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
>>> index 53bc9e3f0b98..6c8efe7d8cbb 100644
>>> --- a/drivers/of/overlay.c
>>> +++ b/drivers/of/overlay.c
>>> @@ -708,8 +708,10 @@ int of_overlay_apply(struct device_node *tree, int *ovcs_id)
>>> of_overlay_mutex_lock();
>>>
>>> ret = of_resolve_phandles(tree);
>>> - if (ret)
>>> + if (ret) {
>>> + kfree(ovcs);
>>> goto err_overlay_unlock;
>>> + }
>>>
>>> mutex_lock(&of_mutex);
>>>
>>>
>>
>> False coverity warning. ovcs is freed in free_overlay_changeset().
>
> You're looking at an older version of the code and Colin is looking at
> linux-next.
>
> regards,
> dan carpenter
>
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