linux-kernel - [PATCH 5.10 440/452] thermal/core: Fix memory leak in the error path

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Date:   Tue,  7 Jun 2022 19:04:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: [PATCH 5.10 440/452] thermal/core: Fix memory leak in the error path

From: Daniel Lezcano <daniel.lezcano@...aro.org>

commit d44616c6cc3e35eea03ecfe9040edfa2b486a059 upstream.

Fix the following error:

 smatch warnings:
 drivers/thermal/thermal_core.c:1020 __thermal_cooling_device_register() warn: possible memory leak of 'cdev'

by freeing the cdev when exiting the function in the error path.

Fixes: 584837618100 ("thermal/drivers/core: Use a char pointer for the cooling device name")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20210319202257.890848-1-daniel.lezcano@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/thermal/thermal_core.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1152,6 +1152,7 @@ out_kfree_type:
 out_ida_remove:
 	ida_simple_remove(&thermal_cdev_ida, id);
 out_kfree_cdev:
+	kfree(cdev);
 	return ERR_PTR(ret);
 }