diff --git a/drivers/scsi/qedf/qedf_debugfs.c b/drivers/scsi/qedf/qedf_debugfs.c
index 41fa846f0bdb..2a3a2d456b47 100644
--- a/drivers/scsi/qedf/qedf_debugfs.c
+++ b/drivers/scsi/qedf/qedf_debugfs.c
@@ -190,7 +190,7 @@ qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer,
 	if (!count || *ppos)
 		return 0;
 
-	kern_buf = memdup_user(buffer, count);
+	kern_buf = memdup_user_nul(buffer, count);
 	if (IS_ERR(kern_buf))
 		return PTR_ERR(kern_buf);