Re: [PATCH 041/190] Revert "ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()"

Rafael J. Wysocki
2021-04-21T17:54:33Z

On 4/21/2021 2:58 PM, Greg Kroah-Hartman wrote:
> This reverts commit 6e6c25283dff866308c87b49434c7dbad4774cc0.
>
> Commits from @umn.edu addresses have been found to be submitted in "bad
> faith" to try to test the kernel community's ability to review "known
> malicious" changes. The result of these submissions can be found in a
> paper published at the 42nd IEEE Symposium on Security and Privacy
> entitled, "Open Source Insecurity: Stealthily Introducing
> Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> of Minnesota) and Kangjie Lu (University of Minnesota).
>
> Because of this, all submissions from this group must be reverted from
> the kernel tree and will need to be re-reviewed again to determine if
> they actually are a valid fix. Until that work is complete, remove this
> change to ensure that no problems are being introduced into the
> codebase.
>
> Cc: Qiushi Wu <wu000273@umn.edu>
> Cc: 3.10+ <stable@vger.kernel.org> # 3.10+
> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> ---
> drivers/acpi/sysfs.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
> index 8baf7644a0d0..842bf63b91e9 100644
> --- a/drivers/acpi/sysfs.c
> +++ b/drivers/acpi/sysfs.c
> @@ -986,10 +986,8 @@ 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) {
> - kobject_put(&hotplug->kobj);
> + if (error)
> goto err_out;
> - }
>
> kobject_uevent(&hotplug->kobj, KOBJ_ADD);
> return;