[PATCH] net: bridge: fix potential NULL pointer dereference

[Gustavo A. R. Silva]

Add NULL check before dereferencing pointer _p_ inside br_afspec().

Addresses-Coverity-ID: 1401872
Signed-off-by: Gustavo A. R. Silva <garsi...@embeddedor.com>
---
 net/bridge/br_netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 1e63ec4..ad85a9c 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -776,7 +776,7 @@ int br_setlink(struct net_device *dev, struct nlmsghdr 
*nlh, u16 flags)
                        goto out;
        }
 
-       if (afspec) {
+       if (p && afspec) {
                err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
                                afspec, RTM_SETLINK);
        }
-- 
2.5.0