appletalk: Set error code if register_snap_client failed
authorYueHaibing <yuehaibing@huawei.com>
Tue, 30 Apr 2019 11:34:08 +0000 (19:34 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 21 Dec 2019 09:41:45 +0000 (10:41 +0100)
commita2f50a543f3e26b28c31b597e1acb4cc9a613e9f
tree08f90329cfd7aeaeefc552f3973eeead161ecc28
parent540b341012ba9b8e2963be3241cea229d4e4804d
appletalk: Set error code if register_snap_client failed

commit c93ad1337ad06a718890a89cdd85188ff9a5a5cc upstream.

If register_snap_client fails in atalk_init,
error code should be set, otherwise it will
triggers NULL pointer dereference while unloading
module.

Fixes: 9804501fa122 ("appletalk: Fix potential NULL pointer dereference in unregister_snap_client")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/appletalk/ddp.c