From 6636568cf85ef5898a892e90fcc88b61cca9ca27 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Mon, 5 Dec 2005 13:36:50 -0800
Subject: [PATCH] [NETFILTER]: Wait for untracked references in nf_conntrack
module unload
Noticed by Pablo Neira <pablo@eurodev.net>.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/netfilter/nf_conntrack_core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 1da678303d78c..a7c7b490cf226 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1383,6 +1383,9 @@ void nf_conntrack_cleanup(void)
schedule();
goto i_see_dead_people;
}
+ /* wait until all references to nf_conntrack_untracked are dropped */
+ while (atomic_read(&nf_conntrack_untracked.ct_general.use) > 1)
+ schedule();
for (i = 0; i < NF_CT_F_NUM; i++) {
if (nf_ct_cache[i].use == 0)
--
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