netdev - [patch net-next] sfc: a couple off by one bugs

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Message-ID: <20170201085040.GA31514@mwanda>
Date:   Wed, 1 Feb 2017 11:50:40 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Solarflare linux maintainers <linux-net-drivers@...arflare.com>,
        Edward Cree <ecree@...arflare.com>
Cc:     Bert Kenward <bkenward@...arflare.com>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [patch net-next] sfc: a couple off by one bugs

These checks are off by one.  These are just sanity checks and we don't
ever pass invalid values for "encap_type" so it's harmless.

Fixes: 9b4108012517 ("sfc: insert catch-all filters for encapsulated traffic")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 8bec9383d754..dec0c8083ff3 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -5080,7 +5080,7 @@ static int efx_ef10_filter_insert_def(struct efx_nic *efx,
 
 		/* quick bounds check (BCAST result impossible) */
 		BUILD_BUG_ON(EFX_EF10_BCAST != 0);
-		if (encap_type > ARRAY_SIZE(map) || map[encap_type] == 0) {
+		if (encap_type >= ARRAY_SIZE(map) || map[encap_type] == 0) {
 			WARN_ON(1);
 			return -EINVAL;
 		}
@@ -5134,7 +5134,7 @@ static int efx_ef10_filter_insert_def(struct efx_nic *efx,
 
 		/* quick bounds check (BCAST result impossible) */
 		BUILD_BUG_ON(EFX_EF10_BCAST != 0);
-		if (encap_type > ARRAY_SIZE(map) || map[encap_type] == 0) {
+		if (encap_type >= ARRAY_SIZE(map) || map[encap_type] == 0) {
 			WARN_ON(1);
 			return -EINVAL;
 		}