From: Harald Welte <laforge@netfilter.org>
Date: Thu, 3 Nov 2005 19:03:24 +0000 (+0100)
Subject: [NETFILTER] nf_queue: Fix Ooops when no queue handler registered
X-Git-Tag: firefly_0821_release~40576^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1758ee0ea26561943813c5f5a7b27272f2cbc4cf;p=firefly-linux-kernel-4.4.55.git

[NETFILTER] nf_queue: Fix Ooops when no queue handler registered

With the new nf_queue generalization in 2.6.14, we've introduced a bug
that causes an oops as soon as a packet is queued but no queue handler
registered.  This patch fixes it.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
---

diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index d10d552d9c40..d3a4f30a7f22 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -117,7 +117,7 @@ int nf_queue(struct sk_buff **skb,
 
 	/* QUEUE == DROP if noone is waiting, to be safe. */
 	read_lock(&queue_handler_lock);
-	if (!queue_handler[pf]->outfn) {
+	if (!queue_handler[pf] || !queue_handler[pf]->outfn) {
 		read_unlock(&queue_handler_lock);
 		kfree_skb(*skb);
 		return 1;