From: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Date: Mon, 16 Nov 2009 22:17:24 +0000 (+0000)
Subject: Phonet: missing rcu_dereference()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b2a5decddbe295d09c29d4a8078cdc47a55346df;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Phonet: missing rcu_dereference()

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index ed65da251b6a..526d0273991a 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -44,7 +44,7 @@ static struct phonet_protocol *phonet_proto_get(int protocol)
 		return NULL;
 
 	rcu_read_lock();
-	pp = proto_tab[protocol];
+	pp = rcu_dereference(proto_tab[protocol]);
 	if (pp && !try_module_get(pp->prot->owner))
 		pp = NULL;
 	rcu_read_unlock();