Re: [PATCH 2/2] kunit: avoid memory leak on device register error

From: Markus Elfring
Date: Thu Apr 18 2024 - 11:25:08 EST


> If the device register fails, free the allocated memory before
> returning.

* I suggest to use the word “registration” (instead of “register”)
in the commit message.

* Would you like to add the tag “Fixes” accordingly?


> +++ b/lib/kunit/device.c
> @@ -131,6 +131,7 @@ static struct kunit_device *kunit_device_register_internal(struct kunit *test,
> err = device_register(&kunit_dev->dev);
> if (err) {
> put_device(&kunit_dev->dev);
> + kfree(kunit_dev);
> return ERR_PTR(err);
> }

Common error handling code can be used instead
if an additional label would be applied for a corresponding jump target.

How do you think about to increase the application of scope-based resource management here?

Regards,
Markus