Thread (18 messages) flat view 18 messages, 2 authors, 2012-09-24
STALE5068d

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[PATCH 03/16] netfilter: nf_nat: remove obsolete rcu_read_unlock call

From: pablo@netfilter.org
Date: 2012-09-24 19:20:57
Also in: netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds 

From: Ulrich Weber <redacted>

hlist walk in find_appropriate_src() is not protected anymore by rcu_read_lock(),
so rcu_read_unlock() is unnecessary if in_range() matches.

This bug was added in (c7232c9 netfilter: add protocol independent NAT core).

Signed-off-by: Ulrich Weber <redacted>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_nat_core.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index 65cf694..5f2f910 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -201,10 +201,8 @@ find_appropriate_src(struct net *net, u16 zone,
 				       &ct->tuplehash[IP_CT_DIR_REPLY].tuple);
 			result->dst = tuple->dst;
 
-			if (in_range(l3proto, l4proto, result, range)) {
-				rcu_read_unlock();
+			if (in_range(l3proto, l4proto, result, range))
 				return 1;
-			}
 		}
 	}
 	return 0;
-- 
1.7.10.4
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