bridge: Check return of dev_set_promiscuity
dev_set_promiscuity/allmulti might overflow.
Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes
dev_set_promiscuity/allmulti return error number if overflow happened.
Here, we check the positive increment for promiscuity to get error return.
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 497df08..a072ea5 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -373,6 +373,10 @@
if (IS_ERR(p))
return PTR_ERR(p);
+ err = dev_set_promiscuity(dev, 1);
+ if (err)
+ goto put_back;
+
err = kobject_init_and_add(&p->kobj, &brport_ktype, &(dev->dev.kobj),
SYSFS_BRIDGE_PORT_ATTR);
if (err)
@@ -388,7 +392,6 @@
rcu_assign_pointer(dev->br_port, p);
dev_disable_lro(dev);
- dev_set_promiscuity(dev, 1);
list_add_rcu(&p->list, &br->port_list);
@@ -412,12 +415,12 @@
br_fdb_delete_by_port(br, p, 1);
err1:
kobject_del(&p->kobj);
- goto put_back;
err0:
kobject_put(&p->kobj);
-
+ dev_set_promiscuity(dev, -1);
put_back:
dev_put(dev);
+ kfree(p);
return err;
}