On Wed, 28 Feb 2018 15:24:16 +0530
Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> wrote:
> Free memory, if afiucv_iucv_init is not successful and
> removing a IUCV driver.
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
> ---
> net/iucv/af_iucv.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
> index 1e8cc7b..eb0995a 100644
> --- a/net/iucv/af_iucv.c
> +++ b/net/iucv/af_iucv.c
> @@ -2433,9 +2433,11 @@ static int afiucv_iucv_init(void)
> af_iucv_dev->driver = &af_iucv_driver;
> err = device_register(af_iucv_dev);
> if (err)
> - goto out_driver;
> + goto out_iucv_dev;
> return 0;
>
> +out_iucv_dev:
> + kfree(af_iucv_dev);
> out_driver:
> driver_unregister(&af_iucv_driver);
> out_iucv:
> @@ -2496,6 +2498,7 @@ static void __exit afiucv_exit(void)
> {
> if (pr_iucv) {
> device_unregister(af_iucv_dev);
> + kfree(af_iucv_dev);
> driver_unregister(&af_iucv_driver);
> pr_iucv->iucv_unregister(&af_iucv_handler, 0);
> symbol_put(iucv_if);
No, you must not use kfree() after you called device_register() (even
if it was not successful!) -- see the comment for device_register().
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