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-rw-r--r--net/ipv4/sysctl_net_ipv4.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 6fb25693c00b..ddac9e64b702 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -302,6 +302,8 @@ static void proc_configure_early_demux(int enabled, int protocol)
struct inet6_protocol *ip6prot;
#endif
+ rcu_read_lock();
+
ipprot = rcu_dereference(inet_protos[protocol]);
if (ipprot)
ipprot->early_demux = enabled ? ipprot->early_demux_handler :
@@ -313,6 +315,7 @@ static void proc_configure_early_demux(int enabled, int protocol)
ip6prot->early_demux = enabled ? ip6prot->early_demux_handler :
NULL;
#endif
+ rcu_read_unlock();
}
static int proc_tcp_early_demux(struct ctl_table *table, int write,