On Sun 04 Aug 09:22 PDT 2019, Nishka Dasgupta wrote:
> Each iteration of for_each_available_child_of_node puts the previous
> node, but in the case of a return from the middle of the loop, there is
> no put, thus causing a memory leak. Hence add an of_node_put before the
> return in two places.
> Issue found with Coccinelle.
>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> Signed-off-by: Nishka Dasgupta <nishkadg.linux@xxxxxxxxx>
> ---
> drivers/slimbus/qcom-ngd-ctrl.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
> index f3585777324c..29fbab55c3b3 100644
> --- a/drivers/slimbus/qcom-ngd-ctrl.c
> +++ b/drivers/slimbus/qcom-ngd-ctrl.c
> @@ -1338,12 +1338,15 @@ static int of_qcom_slim_ngd_register(struct device *parent,
> continue;
>
> ngd = kzalloc(sizeof(*ngd), GFP_KERNEL);
> - if (!ngd)
> + if (!ngd) {
> + of_node_put(node);
> return -ENOMEM;
> + }
>
> ngd->pdev = platform_device_alloc(QCOM_SLIM_NGD_DRV_NAME, id);
> if (!ngd->pdev) {
> kfree(ngd);
> + of_node_put(node);
> return -ENOMEM;
> }
> ngd->id = id;
> --
> 2.19.1
>
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