diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 7465f22..2644afb 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -381,8 +381,9 @@
 			goto retry;
 		}
 		if (printk_ratelimit())
-			printk(KERN_WARNING "vmap allocation failed: "
-				 "use vmalloc=<size> to increase size.\n");
+			printk(KERN_WARNING
+				"vmap allocation for size %lu failed: "
+				"use vmalloc=<size> to increase size.\n", size);
 		return ERR_PTR(-EBUSY);
 	}