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SubjectRe: [PATCH] mailbox: zynqmp-ipi-mailbox: Add of_node_put() before goto
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On 31/07/19 7:51 PM, Michal Simek wrote:
> On 31. 07. 19 15:06, Nishka Dasgupta wrote:
>> On 31/07/19 2:01 PM, Michal Simek wrote:
>>> On 09. 07. 19 19:28, Nishka Dasgupta wrote:
>>>> Each iteration of for_each_available_child_of_node puts the previous
>>>> node, but in the case of a goto from the middle of the loop, there is
>>>> no put, thus causing a memory leak. Hence add an of_node_put before the
>>>> goto.
>>>> Issue found with Coccinelle.
>>>>
>>>> Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
>>>> ---
>>>>   drivers/mailbox/zynqmp-ipi-mailbox.c | 1 +
>>>>   1 file changed, 1 insertion(+)
>>>>
>>>> diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c
>>>> b/drivers/mailbox/zynqmp-ipi-mailbox.c
>>>> index 86887c9a349a..bd80d4c10ec2 100644
>>>> --- a/drivers/mailbox/zynqmp-ipi-mailbox.c
>>>> +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
>>>> @@ -661,6 +661,7 @@ static int zynqmp_ipi_probe(struct
>>>> platform_device *pdev)
>>>>           if (ret) {
>>>>               dev_err(dev, "failed to probe subdev.\n");
>>>>               ret = -EINVAL;
>>>> +            of_node_put(nc);
>>>>               goto free_mbox_dev;
>>>>           }
>>>>           mbox++;
>>>>
>>>
>>> Patch is good but when you are saying that this was found by Coccinelle
>>> then it should be added as script to kernel to detect it.
>>
>> This particular patch was suggested by a script I did not write myself;
>> someone else wrote it and sent it to me. How should I proceed in this case?
>
> You can ask him to submit it to kernel.
> Or you can take it, keep his authorship and send it to:

I have asked her to submit this script, thank you. Will I need to
resubmit this patch, however?

Regards,
Nishka

> ./scripts/get_maintainer.pl -f scripts/coccinelle/
> Julia Lawall <Julia.Lawall@lip6.fr> (supporter:COCCINELLE/Semantic
> Patches (SmPL))
> Gilles Muller <Gilles.Muller@lip6.fr> (supporter:COCCINELLE/Semantic
> Patches (SmPL))
> Nicolas Palix <nicolas.palix@imag.fr> (supporter:COCCINELLE/Semantic
> Patches (SmPL))
> Michal Marek <michal.lkml@markovi.net> (supporter:COCCINELLE/Semantic
> Patches (SmPL))
> cocci@systeme.lip6.fr (moderated list:COCCINELLE/Semantic Patches (SmPL))
> linux-kernel@vger.kernel.org (open list)
>
> Thanks,
> Michal
>

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