ipv4: disable BH in set_ping_group_range()

[ Upstream commit a681574c99be23e4d20b769bf0e543239c364af5 ]

In commit 4ee3bd4a8c746 ("ipv4: disable BH when changing ip local port
range") Cong added BH protection in set_local_port_range() but missed
that same fix was needed in set_ping_group_range()

Fixes: b8f1a55639e6 ("udp: Add function to make source port for UDP tunnels")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Eric Salo <salo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index a0bd7a55193e351c9ec75a469315c44e76195fd1..9d82611c46005a895c17ead08d00c7e05a19ec5c 100644 (file)
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -110,10 +110,10 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig
        kgid_t *data = table->data;
        struct net *net =
                container_of(table->data, struct net, ipv4.ping_group_range.range);
-       write_seqlock(&net->ipv4.ip_local_ports.lock);
+       write_seqlock_bh(&net->ipv4.ip_local_ports.lock);
        data[0] = low;
        data[1] = high;
-       write_sequnlock(&net->ipv4.ip_local_ports.lock);
+       write_sequnlock_bh(&net->ipv4.ip_local_ports.lock);
 }
 
 /* Validate changes from /proc interface. */