Messages in this thread | | | Subject | Re: [PATCH] net: iucv: Free memory obtained by kzalloc | From | Arvind Yadav <> | Date | Wed, 28 Feb 2018 17:14:55 +0530 |
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On Wednesday 28 February 2018 04:00 PM, Cornelia Huck wrote: > On Wed, 28 Feb 2018 15:24:16 +0530 > Arvind Yadav <arvind.yadav.cs@gmail.com> wrote: > >> Free memory, if afiucv_iucv_init is not successful and >> removing a IUCV driver. >> >> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> >> --- >> 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(). Yes, Your are right. First we need to call put_device() then kfree(). I will send updated patch. ~arvind
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