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ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile.

Message ID 20200527211717.14956-1-wu000273@umn.edu (mailing list archive)
State Mainlined, archived
Headers show
Series ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile. | expand

Commit Message

wu000273@umn.edu May 27, 2020, 9:17 p.m. UTC
From: Qiushi Wu <wu000273@umn.edu>

kobject_init_and_add() takes reference even when it fails.
Thus, when kobject_init_and_add() returns an error,
kobject_put() must be called to properly clean up the kobject.

Fixes: 3f8055c35836 ("ACPI / hotplug: Introduce user space interface for hotplug profiles")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
---
 drivers/acpi/sysfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Rafael J. Wysocki May 28, 2020, 11:50 a.m. UTC | #1
On Wed, May 27, 2020 at 11:17 PM <wu000273@umn.edu> wrote:
>
> From: Qiushi Wu <wu000273@umn.edu>
>
> kobject_init_and_add() takes reference even when it fails.
> Thus, when kobject_init_and_add() returns an error,
> kobject_put() must be called to properly clean up the kobject.
>
> Fixes: 3f8055c35836 ("ACPI / hotplug: Introduce user space interface for hotplug profiles")
> Signed-off-by: Qiushi Wu <wu000273@umn.edu>
> ---
>  drivers/acpi/sysfs.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
> index c60d2c6d31d6..3a89909b50a6 100644
> --- a/drivers/acpi/sysfs.c
> +++ b/drivers/acpi/sysfs.c
> @@ -993,8 +993,10 @@ void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
>
>         error = kobject_init_and_add(&hotplug->kobj,
>                 &acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
> -       if (error)
> +       if (error) {
> +               kobject_put(&hotplug->kobj);
>                 goto err_out;
> +       }
>
>         kobject_uevent(&hotplug->kobj, KOBJ_ADD);
>         return;
> --

Applied as 5.8 material, thanks!
diff mbox series

Patch

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index c60d2c6d31d6..3a89909b50a6 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -993,8 +993,10 @@  void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
 
 	error = kobject_init_and_add(&hotplug->kobj,
 		&acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
-	if (error)
+	if (error) {
+		kobject_put(&hotplug->kobj);
 		goto err_out;
+	}
 
 	kobject_uevent(&hotplug->kobj, KOBJ_ADD);
 	return;