[tip:sched/urgent] sched/cpufreq: Fix kobject memleak

[tip-bot for Tobin C. Harding]

Commit-ID:  9a4f26cc98d81b67ecc23b890c28e2df324e29f3
Gitweb:     https://git.kernel.org/tip/9a4f26cc98d81b67ecc23b890c28e2df324e29f3
Author:     Tobin C. Harding <tobin@xxxxxxxxxx>
AuthorDate: Tue, 30 Apr 2019 10:11:44 +1000
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 30 Apr 2019 07:57:23 +0200

sched/cpufreq: Fix kobject memleak

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: Tobin C. Harding <tobin@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tobin C. Harding <tobin@xxxxxxxxxx>
Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20190430001144.24890-1-tobin@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 kernel/sched/cpufreq_schedutil.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 5c41ea367422..3638d2377e3c 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -771,6 +771,7 @@ out:
 	return 0;
 
 fail:
+	kobject_put(&tunables->attr_set.kobj);
 	policy->governor_data = NULL;
 	sugov_tunables_free(tunables);