linux-kernel - [tip:sched/urgent] sched/cpufreq: Fix kobject memleak

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Date:   Mon, 29 Apr 2019 22:52:16 -0700
From:   "tip-bot for Tobin C. Harding" <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, rafael.j.wysocki@...el.com,
        mingo@...nel.org, tglx@...utronix.de, hpa@...or.com,
        gregkh@...uxfoundation.org, viresh.kumar@...aro.org,
        tobin@...nel.org, peterz@...radead.org, vincent.guittot@...aro.org,
        torvalds@...ux-foundation.org
Subject: [tip:sched/urgent] sched/cpufreq: Fix kobject memleak

Commit-ID:  8bf7ab9c79f3d1a5f02ebac369f656de9ec0aca8
Gitweb:     https://git.kernel.org/tip/8bf7ab9c79f3d1a5f02ebac369f656de9ec0aca8
Author:     Tobin C. Harding <tobin@...nel.org>
AuthorDate: Tue, 30 Apr 2019 10:11:44 +1000
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 30 Apr 2019 06:24:09 +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@...nel.org>
Add call to kobject_put() in error path of kobject_init_and_add().
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tobin C. Harding <tobin@...nel.org>
Cc: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
Link: http://lkml.kernel.org/r/20190430001144.24890-1-tobin@kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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);