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| author | Tonghao Zhang <xiangxia.m.yue@gmail.com> | 2017-07-20 02:41:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-24 13:44:31 -0700 |
| commit | 5edfbd3c0697e643f179dba819a7c09375b42543 (patch) | |
| tree | dc35ad585e0ad601bee1804b69529ce49090bab9 /drivers/net | |
| parent | 6c7fce6fa86a110d6455662d823c4e09f8f7be4a (diff) | |
| download | linux-5edfbd3c0697e643f179dba819a7c09375b42543.tar.bz2 | |
tun/tap: Add the missed return value check of register_netdevice_notifier
There is some codes of tun/tap module which did not check the return
value of register_netdevice_notifier. Add the check now.
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tun.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 3d4c24572ecd..32ad87345f57 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2598,8 +2598,16 @@ static int __init tun_init(void) goto err_misc; } - register_netdevice_notifier(&tun_notifier_block); + ret = register_netdevice_notifier(&tun_notifier_block); + if (ret) { + pr_err("Can't register netdevice notifier\n"); + goto err_notifier; + } + return 0; + +err_notifier: + misc_deregister(&tun_miscdev); err_misc: rtnl_link_unregister(&tun_link_ops); err_linkops: |