From 0d1873a52289f7214e7e70d2d0552b617582269a Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Fri, 10 Dec 2021 00:06:44 +0100
Subject: [PATCH] netfilter: nf_tables: remove rcu read-size lock
Chain stats are updated from the Netfilter hook path which already run
under rcu read-size lock section.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_tables_core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c
index adc3480560767..41c7509955e6a 100644
--- a/net/netfilter/nf_tables_core.c
+++ b/net/netfilter/nf_tables_core.c
@@ -110,7 +110,6 @@ static noinline void nft_update_chain_stats(const struct nft_chain *chain,
base_chain = nft_base_chain(chain);
- rcu_read_lock();
pstats = READ_ONCE(base_chain->stats);
if (pstats) {
local_bh_disable();
@@ -121,7 +120,6 @@ static noinline void nft_update_chain_stats(const struct nft_chain *chain,
u64_stats_update_end(&stats->syncp);
local_bh_enable();
}
- rcu_read_unlock();
}
struct nft_jumpstack {
--
2.30.2