From: Florian Westphal <fw@strlen.de>
To: <netfilter-devel@vger.kernel.org>
Cc: Florian Westphal <fw@strlen.de>
Subject: [PATCH nf] netfilter: nfnetlink: don't probe module if it exists
Date: Tue, 27 Oct 2015 13:20:25 +0100 [thread overview]
Message-ID: <1445948425-19080-1-git-send-email-fw@strlen.de> (raw)
nfnetlink_bind request_module()s all the time as nfnetlink_get_subsys()
shifts the argument by 8 to obtain the subsys id.
So using type instead of type << 8 always returns NULL.
Fixes: 03292745b02d11 ("netlink: add nlk->netlink_bind hook for module auto-loading")
Signed-off-by: Florian Westphal <fw@strlen.de>
---
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 70277b1..27b93da 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -492,7 +492,7 @@ static int nfnetlink_bind(struct net *net, int group)
type = nfnl_group2type[group];
rcu_read_lock();
- ss = nfnetlink_get_subsys(type);
+ ss = nfnetlink_get_subsys(type << 8);
rcu_read_unlock();
if (!ss)
request_module("nfnetlink-subsys-%d", type);
--
2.0.5
next reply other threads:[~2015-10-27 12:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-27 12:20 Florian Westphal [this message]
2015-10-28 2:45 ` [PATCH nf] netfilter: nfnetlink: don't probe module if it exists Pablo Neira Ayuso
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