ixgbe: Off by one in ixgbe_ipsec_tx()

[ Upstream commit c411104115e6821f26fc8f6de8b235ddf98de688 ]

The ipsec->tx_tbl[] has IXGBE_IPSEC_MAX_SA_COUNT elements so the > needs
to be changed to >= so we don't read one element beyond the end of the
array.

Fixes: 592594704761 ("ixgbe: process the Tx ipsec offload")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index cead23e3db0cb8ba5028a72cc2e89e2ccd6647c6..eea4b6f0efe59ae7ce212de69b56a007240ff832 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -759,7 +759,7 @@ int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring,
        }
 
        itd->sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_TX_INDEX;
-       if (unlikely(itd->sa_idx > IXGBE_IPSEC_MAX_SA_COUNT)) {
+       if (unlikely(itd->sa_idx >= IXGBE_IPSEC_MAX_SA_COUNT)) {
                netdev_err(tx_ring->netdev, "%s: bad sa_idx=%d handle=%lu\n",
                           __func__, itd->sa_idx, xs->xso.offload_handle);
                return 0;