Re: [PATCH] soc: qcom: aoss: Fix the out of bound usage of cooling_devs

From: Manivannan Sadhasivam
Date: Tue Jun 29 2021 - 00:26:07 EST


On Mon, Jun 28, 2021 at 04:03:14PM -0700, Matthias Kaehlcke wrote:

[...]

>
>
> A few more previous lines of code for context:
>
> int count = QMP_NUM_COOLING_RESOURCES;
>
> qmp->cooling_devs = devm_kcalloc(qmp->dev, count,
> sizeof(*qmp->cooling_devs),
> GFP_KERNEL);
>
> I would suggest to initialize 'count' to 0 from the start and pass
> QMP_NUM_COOLING_RESOURCES to devm_kcalloc() rather than 'count',
> instead of resetting 'count' afterwards.

Yeah, I thought about it but the actual bug in the code is not resetting
the count value to 0. So fixing this way seems a better option.

Thanks,
Mani