Vaibhav Jain <vaibhav@xxxxxxxxxxxxx> writes:
> String 'bus_desc.provider_name' allocated inside
> of_pmem_region_probe() will leak in case call to nvdimm_bus_register()
> fails or when of_pmem_region_remove() is called.
>
> This minor patch ensures that 'bus_desc.provider_name' is freed in
> error path for of_pmem_region_probe() as well as in
> of_pmem_region_remove().
>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes:49bddc73d15c2("libnvdimm/of_pmem: Provide a unique name for bus provider")
> Signed-off-by: Vaibhav Jain <vaibhav@xxxxxxxxxxxxx>
> ---
> drivers/nvdimm/of_pmem.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c
> index 8224d1431ea9..9cb76f9837ad 100644
> --- a/drivers/nvdimm/of_pmem.c
> +++ b/drivers/nvdimm/of_pmem.c
> @@ -36,6 +36,7 @@ static int of_pmem_region_probe(struct platform_device *pdev)
>
> priv->bus = bus = nvdimm_bus_register(&pdev->dev, &priv->bus_desc);
> if (!bus) {
> + kfree(priv->bus_desc.provider_name);
> kfree(priv);
> return -ENODEV;
> }
> @@ -81,6 +82,7 @@ static int of_pmem_region_remove(struct platform_device *pdev)
> struct of_pmem_private *priv = platform_get_drvdata(pdev);
>
> nvdimm_bus_unregister(priv->bus);
> + kfree(priv->bus_desc.provider_name);
> kfree(priv);
>
> return 0;
> --
> 2.24.1
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