KVM: Fix off-by-one when writing to a nonpae guest pde

[powerpc.git] / net / bridge / br_netlink.c

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index a913968..7d68b24 100644 (file)
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -45,7 +45,7 @@ static int br_fill_ifinfo(struct sk_buff *skb, const struct net_bridge_port *por
 
        nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
        if (nlh == NULL)
-               return -ENOBUFS;
+               return -EMSGSIZE;
 
        hdr = nlmsg_data(nlh);
        hdr->ifi_family = AF_BRIDGE;
@@ -72,7 +72,8 @@ static int br_fill_ifinfo(struct sk_buff *skb, const struct net_bridge_port *por
        return nlmsg_end(skb, nlh);
 
 nla_put_failure:
-       return nlmsg_cancel(skb, nlh);
+       nlmsg_cancel(skb, nlh);
+       return -EMSGSIZE;
 }
 
 /*
@@ -89,9 +90,12 @@ void br_ifinfo_notify(int event, struct net_bridge_port *port)
                goto errout;
 
        err = br_fill_ifinfo(skb, port, 0, 0, event, 0);
-       /* failure implies BUG in br_nlmsg_size() */
-       BUG_ON(err < 0);
-
+       if (err < 0) {
+               /* -EMSGSIZE implies BUG in br_nlmsg_size() */
+               WARN_ON(err == -EMSGSIZE);
+               kfree_skb(skb);
+               goto errout;
+       }
        err = rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
 errout:
        if (err < 0)