[NETFILTER]: ip_queue/nfnetlink_queue: drop bridge port references when dev disappears

When a device that is acting as a bridge port is unregistered, the
ip_queue/nfnetlink_queue notifier doesn't check if its one of
physindev/physoutdev and doesn't release the references if it is.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 2 deletions

diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index b93f0494362f..213d116e5bb9 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -457,11 +457,19 @@ dev_cmp(struct ipq_queue_entry *entry, unsigned long ifindex)
         if (entry->info->indev)
                 if (entry->info->indev->ifindex == ifindex)
                         return 1;
-                        
         if (entry->info->outdev)
                 if (entry->info->outdev->ifindex == ifindex)
                         return 1;
-
+#ifdef CONFIG_BRIDGE_NETFILTER
+        if (entry->skb->nf_bridge) {
+                if (entry->skb->nf_bridge->physindev &&
+                    entry->skb->nf_bridge->physindev->ifindex == ifindex)
+                        return 1;
+                if (entry->skb->nf_bridge->physoutdev &&
+                    entry->skb->nf_bridge->physoutdev->ifindex == ifindex)
+                        return 1;
+        }
+#endif
         return 0;
 }