bridge: make buffer larger in br_setlink()

We pass IFLA_BRPORT_MAX to nla_parse_nested() so we need
IFLA_BRPORT_MAX + 1 elements.  Also Smatch complains that we read past
the end of the array when in br_set_port_flag() when it's called with
IFLA_BRPORT_FAST_LEAVE.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 850b7d1..dead9df 100644 (file)
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -239,7 +239,7 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
        struct ifinfomsg *ifm;
        struct nlattr *protinfo;
        struct net_bridge_port *p;
-       struct nlattr *tb[IFLA_BRPORT_MAX];
+       struct nlattr *tb[IFLA_BRPORT_MAX + 1];
        int err;
 
        ifm = nlmsg_data(nlh);