From: Harald Welte <laforge@netfilter.org>
Date: Wed, 10 Aug 2005 03:20:54 +0000 (-0700)
Subject: [NETFILTER]: ip{6}_queue: prevent unregistration race with nfnetlink_queue
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=210a9ebef2d1bd32d9e9d81c84d538e237769cdb;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[NETFILTER]: ip{6}_queue: prevent unregistration race with nfnetlink_queue

Since nfnetlink_queue can override ip{6}_queue as queue handlers, we
can no longer blindly unregister whoever is registered for PF_INET[6],
but only unregister ourselves.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index cfc886f382a..629de649f13 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -692,7 +692,7 @@ init_or_cleanup(int init)
 	return status;
 
 cleanup:
-	nf_unregister_queue_handler(PF_INET);
+	nf_unregister_queue_handlers(&ipq_enqueue_packet);
 	synchronize_net();
 	ipq_flush(NF_DROP);
 	
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 5af4cee93d9..56ffec3568f 100644
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -687,7 +687,7 @@ init_or_cleanup(int init)
 	return status;
 
 cleanup:
-	nf_unregister_queue_handler(PF_INET6);
+	nf_unregister_queue_handlers(&ipq_enqueue_packet);
 	synchronize_net();
 	ipq_flush(NF_DROP);