scsi: qla2xxx: Fix off by one in qla_edif_app_getstats()

[ Upstream commit 4406e4176f47177f5e51b4cc7e6a7a2ff3dbfbbd ]

The app_reply->elem[] array is allocated earlier in this function and it
has app_req.num_ports elements.  Thus this > comparison needs to be >= to
prevent memory corruption.

Fixes: 7878f22a2e03 ("scsi: qla2xxx: edif: Add getfcinfo and statistic bsgs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/5c125b2f-92dd-412b-9b6f-fc3a3207bd60@moroto.mountain
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index 40a03f9c2d21f7cbb55499828e631fbf96aecb89..ac702f74dd9840fa286b295692c84ad2367aedc6 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -1012,7 +1012,7 @@ qla_edif_app_getstats(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
 
                list_for_each_entry_safe(fcport, tf, &vha->vp_fcports, list) {
                        if (fcport->edif.enable) {
-                               if (pcnt > app_req.num_ports)
+                               if (pcnt >= app_req.num_ports)
                                        break;
 
                                app_reply->elem[pcnt].rekey_count =