Patch "thermal: core: fix some possible name leaks in error paths" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    thermal: core: fix some possible name leaks in error paths

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     thermal-core-fix-some-possible-name-leaks-in-error-p.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b0c368ddd03febb3ebcbe6f60841e75fec67ad03
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date:   Tue Nov 15 17:19:45 2022 +0800

    thermal: core: fix some possible name leaks in error paths
    
    [ Upstream commit 4748f9687caaeefab8578285b97b2f30789fc4b4 ]
    
    In some error paths before device_register(), the names allocated
    by dev_set_name() are not freed. Move dev_set_name() front to
    device_register(), so the name can be freed while calling
    put_device().
    
    Fixes: 1dd7128b839f ("thermal/core: Fix null pointer dereference in thermal_release()")
    Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 867c8aa92b3a..38082fdc4fde 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -905,10 +905,6 @@ __thermal_cooling_device_register(struct device_node *np,
 	cdev->id = ret;
 	id = ret;
 
-	ret = dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
-	if (ret)
-		goto out_ida_remove;
-
 	cdev->type = kstrdup(type ? type : "", GFP_KERNEL);
 	if (!cdev->type) {
 		ret = -ENOMEM;
@@ -923,6 +919,11 @@ __thermal_cooling_device_register(struct device_node *np,
 	cdev->device.class = &thermal_class;
 	cdev->devdata = devdata;
 	thermal_cooling_device_setup_sysfs(cdev);
+	ret = dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
+	if (ret) {
+		thermal_cooling_device_destroy_sysfs(cdev);
+		goto out_kfree_type;
+	}
 	ret = device_register(&cdev->device);
 	if (ret)
 		goto out_kfree_type;
@@ -1235,10 +1236,6 @@ thermal_zone_device_register(const char *type, int trips, int mask,
 	tz->id = id;
 	strlcpy(tz->type, type, sizeof(tz->type));
 
-	result = dev_set_name(&tz->device, "thermal_zone%d", tz->id);
-	if (result)
-		goto remove_id;
-
 	if (!ops->critical)
 		ops->critical = thermal_zone_device_critical;
 
@@ -1260,6 +1257,11 @@ thermal_zone_device_register(const char *type, int trips, int mask,
 	/* A new thermal zone needs to be updated anyway. */
 	atomic_set(&tz->need_update, 1);
 
+	result = dev_set_name(&tz->device, "thermal_zone%d", tz->id);
+	if (result) {
+		thermal_zone_destroy_device_groups(tz);
+		goto remove_id;
+	}
 	result = device_register(&tz->device);
 	if (result)
 		goto release_device;