[PATCH] bonding: correctly handle out of range parameters for lp_interval

[Sasha Levin <sasha.levin@oracle.com>]

We didn't correctly check cases where the value for lp_interval is not
within the legal range due to a missing table terminator.

This would let userspace trigger a kernel panic by specifying a value out
of range:

	echo -1 > /sys/devices/virtual/net/bond0/bonding/lp_interval

Introduced by commit "bonding: add infrastructure for an option API".

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---
 drivers/net/bonding/bond_options.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 23f3655..4d35cdc 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -124,6 +124,7 @@ static struct bond_opt_value bond_resend_igmp_tbl[] = {
 static struct bond_opt_value bond_lp_interval_tbl[] = {
 	{ "minval",  1,       BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
 	{ "maxval",  INT_MAX, BOND_VALFLAG_MAX},
+	{ NULL,      -1,      0},	
 };
 
 static struct bond_option bond_opts[] = {
-- 
1.7.2.5