Index: VirtualBox-5.1.28/src/VBox/HostDrivers/VBoxPci/linux/VBoxPci-linux.c
===================================================================
--- VirtualBox-5.1.28.orig/src/VBox/HostDrivers/VBoxPci/linux/VBoxPci-linux.c
+++ VirtualBox-5.1.28/src/VBox/HostDrivers/VBoxPci/linux/VBoxPci-linux.c
@@ -357,7 +357,11 @@ static int vboxPciFileWrite(struct file*
 
     fs_save = get_fs();
     set_fs(get_ds());
+# if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
+    ret = kernel_write(file, data, size, &offset);
+#else
     ret = vfs_write(file, data, size, &offset);
+#endif
     set_fs(fs_save);
     if (ret < 0)
         printk(KERN_DEBUG "vboxPciFileWrite: error %d\n", ret);