2 files changed, 5 insertions, 0 deletions

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 74b2edaaf1f6..ed8e2e6c8df2 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -995,11 +995,15 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
         case VHOST_SCSI_SET_ENDPOINT:
                 if (copy_from_user(&backend, argp, sizeof backend))
                         return -EFAULT;
+                if (backend.reserved != 0)
+                        return -EOPNOTSUPP;
 
                 return vhost_scsi_set_endpoint(vs, &backend);
         case VHOST_SCSI_CLEAR_ENDPOINT:
                 if (copy_from_user(&backend, argp, sizeof backend))
                         return -EFAULT;
+                if (backend.reserved != 0)
+                        return -EOPNOTSUPP;
 
                 return vhost_scsi_clear_endpoint(vs, &backend);
         case VHOST_SCSI_GET_ABI_VERSION:
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
index e9d5c020fb39..d9e93557d669 100644
--- a/drivers/vhost/tcm_vhost.h
+++ b/drivers/vhost/tcm_vhost.h
@@ -93,6 +93,7 @@ struct vhost_scsi_target {
         int abi_version;
         char vhost_wwpn[TRANSPORT_IQN_LEN];
         unsigned short vhost_tpgt;
+        unsigned short reserved;
 };
 
 /* VHOST_SCSI specific defines */