scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST...

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 554ec72..a886de3 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4827,6 +4827,9 @@ megasas_host_device_list_query(struct megasas_instance *instance,
                 */
                count = le32_to_cpu(ci->count);
 
+               if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
+                       break;
+
                if (megasas_dbg_lvl & LD_PD_DEBUG)
                        dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
                                 __func__, count);