[PATCH 5.1 090/405] cpufreq: Fix kobject memleak

[Greg Kroah-Hartman]

[ Upstream commit 4ebe36c94aed95de71a8ce6a6762226d31c938ee ]

Currently the error return path from kobject_init_and_add() is not
followed by a call to kobject_put() - which means we are leaking the
kobject.

Fix it by adding a call to kobject_put() in the error path of
kobject_init_and_add().

Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
Reviewed-by: Tobin C. Harding <to...@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/cpufreq/cpufreq.c          | 1 +
 drivers/cpufreq/cpufreq_governor.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index e10922709d139..bbf79544d0ad8 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1098,6 +1098,7 @@ static struct cpufreq_policy 
*cpufreq_policy_alloc(unsigned int cpu)
                                   cpufreq_global_kobject, "policy%u", cpu);
        if (ret) {
                pr_err("%s: failed to init policy->kobj: %d\n", __func__, ret);
+               kobject_put(&policy->kobj);
                goto err_free_real_cpus;
        }
 
diff --git a/drivers/cpufreq/cpufreq_governor.c 
b/drivers/cpufreq/cpufreq_governor.c
index ffa9adeaba31b..9d1d9bf02710b 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -459,6 +459,8 @@ int cpufreq_dbs_governor_init(struct cpufreq_policy *policy)
        /* Failure, so roll back. */
        pr_err("initialization failed (dbs_data kobject init error %d)\n", ret);
 
+       kobject_put(&dbs_data->attr_set.kobj);
+
        policy->governor_data = NULL;
 
        if (!have_governor_per_policy())
-- 
2.20.1