[PATCH 5.10 274/406] PM / devfreq: Fix leak in devfreq_dev_release()

Greg Kroah-Hartman
2023-09-17T19:35:57Z

From: Boris Brezillon <boris.brezillon@collabora.com>

commit 5693d077595de721f9ddbf9d37f40e5409707dfe upstream.

srcu_init_notifier_head() allocates resources that need to be released
with a srcu_cleanup_notifier_head() call.

Reported by kmemleak.

Fixes: 0fe3a66410a3 ("PM / devfreq: Add new DEVFREQ_TRANSITION_NOTIFIER notifier")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/devfreq/devfreq.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -732,6 +732,7 @@ static void devfreq_dev_release(struct d
devfreq->profile->exit(devfreq->dev.parent);

mutex_destroy(&devfreq->lock);
+ srcu_cleanup_notifier_head(&devfreq->transition_notifier_list);
kfree(devfreq);
}