diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 863bb64..f9026d0 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1268,6 +1268,7 @@
 			}
 		} else {
 			memcpy(cmd->cmnd, req->cmd, sizeof(cmd->cmnd));
+			cmd->cmd_len = req->cmd_len;
 			if (rq_data_dir(req) == WRITE)
 				cmd->sc_data_direction = DMA_TO_DEVICE;
 			else if (req->data_len)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index de564b3..9a1dc0c 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -235,6 +235,7 @@
 			return 0;
 
 		memcpy(SCpnt->cmnd, rq->cmd, sizeof(SCpnt->cmnd));
+		SCpnt->cmd_len = rq->cmd_len;
 		if (rq_data_dir(rq) == WRITE)
 			SCpnt->sc_data_direction = DMA_TO_DEVICE;
 		else if (rq->data_len)
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index ce63fc8..561901b 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -326,6 +326,7 @@
 			return 0;
 
 		memcpy(SCpnt->cmnd, rq->cmd, sizeof(SCpnt->cmnd));
+		SCpnt->cmd_len = rq->cmd_len;
 		if (!rq->data_len)
 			SCpnt->sc_data_direction = DMA_NONE;
 		else if (rq_data_dir(rq) == WRITE)
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index a93308a..d001c04 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -4206,6 +4206,7 @@
 		return 0;
 
 	memcpy(SCpnt->cmnd, rq->cmd, sizeof(SCpnt->cmnd));
+	SCpnt->cmd_len = rq->cmd_len;
 
 	if (rq_data_dir(rq) == WRITE)
 		SCpnt->sc_data_direction = DMA_TO_DEVICE;