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cpuidle: Fix three reference count leaks

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kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object.

Previous commit "b8eb718348b8" fixed a similar problem.

Signed-off-by: Qiushi Wu <wu000273@umn.edu>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Qiushi Wu 2020-05-28 13:20:46 -05:00 committed by Rafael J. Wysocki
parent a871be6b8e
commit c343bf1ba5
1 changed files with 3 additions and 3 deletions
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6
drivers/cpuidle/sysfs.c
View file

@ -484,7 +484,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device)
ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle,
&kdev->kobj, "state%d", i);
if (ret) {
kfree(kobj);
kobject_put(&kobj->kobj);
goto error_state;
}
cpuidle_add_s2idle_attr_group(kobj);
@ -615,7 +615,7 @@ static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev)
ret = kobject_init_and_add(&kdrv->kobj, &ktype_driver_cpuidle,
&kdev->kobj, "driver");
if (ret) {
kfree(kdrv);
kobject_put(&kdrv->kobj);
return ret;
}
@ -709,7 +709,7 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev)
error = kobject_init_and_add(&kdev->kobj, &ktype_cpuidle, &cpu_dev->kobj,
"cpuidle");
if (error) {
kfree(kdev);
kobject_put(&kdev->kobj);
return error;
}