diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-11-15 10:19:45 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-11-25 19:51:41 +0100 |
| commit | 4748f9687caaeefab8578285b97b2f30789fc4b4 (patch) | |
| tree | 7bd30f76f03967efa2c2abc4e6176e7f31555a37 /drivers/thermal | |
| parent | thermal/core: Protect thermal device operations against thermal device removal (diff) | |
| download | linux-4748f9687caaeefab8578285b97b2f30789fc4b4.tar.xz linux-4748f9687caaeefab8578285b97b2f30789fc4b4.zip | |
thermal: core: fix some possible name leaks in error paths
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@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index cc7dbcb2c739..f17ab2316dbd 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -894,10 +894,6 @@ __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; @@ -917,6 +913,11 @@ __thermal_cooling_device_register(struct device_node *np, goto out_kfree_type; 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; @@ -1250,10 +1251,6 @@ thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *t tz->id = id; strscpy(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; @@ -1276,6 +1273,11 @@ thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *t /* 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; |