[PATCH 4.19 038/267] ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()

[Greg Kroah-Hartman]

From: Qiushi Wu <wu000...@umn.edu>

commit 4d8be4bc94f74bb7d096e1c2e44457b530d5a170 upstream.

kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object. Previous
commit "b8eb718348b8" fixed a similar problem.

Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered 
performance")
Signed-off-by: Qiushi Wu <wu000...@umn.edu>
Cc: 4.10+ <sta...@vger.kernel.org> # 4.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/acpi/cppc_acpi.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -869,6 +869,7 @@ int acpi_cppc_processor_probe(struct acp
                        "acpi_cppc");
        if (ret) {
                per_cpu(cpc_desc_ptr, pr->id) = NULL;
+               kobject_put(&cpc_ptr->kobj);
                goto out_free;
        }