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Diffstat (limited to 'net/core/neighbour.c')
-rw-r--r--net/core/neighbour.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 3de654256028..2237c1b3cdd2 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -957,6 +957,8 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
rc = 0;
if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
goto out_unlock_bh;
+ if (neigh->dead)
+ goto out_dead;
if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
if (NEIGH_VAR(neigh->parms, MCAST_PROBES) +
@@ -1013,6 +1015,13 @@ out_unlock_bh:
write_unlock(&neigh->lock);
local_bh_enable();
return rc;
+
+out_dead:
+ if (neigh->nud_state & NUD_STALE)
+ goto out_unlock_bh;
+ write_unlock_bh(&neigh->lock);
+ kfree_skb(skb);
+ return 1;
}
EXPORT_SYMBOL(__neigh_event_send);
@@ -1076,6 +1085,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
(old & (NUD_NOARP | NUD_PERMANENT)))
goto out;
+ if (neigh->dead)
+ goto out;
if (!(new & NUD_VALID)) {
neigh_del_timer(neigh);
@@ -1225,6 +1236,8 @@ EXPORT_SYMBOL(neigh_update);
*/
void __neigh_set_probe_once(struct neighbour *neigh)
{
+ if (neigh->dead)
+ return;
neigh->updated = jiffies;
if (!(neigh->nud_state & NUD_FAILED))
return;