From: YueHaibing <yuehaibing@xxxxxxxxxx>
[ Upstream commit 45d5cb137c3638b3a310f41b31d8e79daf647f14 ]
If register_qdisc fails, we should unregister
netdevice notifier.
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: e0a7683d30e9 ("net/sched: cbs: fix port_rate miscalculation")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/sched/sch_cbs.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/net/sched/sch_cbs.c b/net/sched/sch_cbs.c
index 81f84cb5dd23b..b3c8d04929df2 100644
--- a/net/sched/sch_cbs.c
+++ b/net/sched/sch_cbs.c
@@ -552,12 +552,17 @@ static struct notifier_block cbs_device_notifier = {
static int __init cbs_module_init(void)
{
- int err = register_netdevice_notifier(&cbs_device_notifier);
+ int err;
+ err = register_netdevice_notifier(&cbs_device_notifier);
if (err)
return err;
- return register_qdisc(&cbs_qdisc_ops);
+ err = register_qdisc(&cbs_qdisc_ops);
+ if (err)
+ unregister_netdevice_notifier(&cbs_device_notifier);
+
+ return err;
}
static void __exit cbs_module_exit(void)
--
2.20.1
