diff --git a/sys/kern/vfs_mountroot.c b/sys/kern/vfs_mountroot.c
--- a/sys/kern/vfs_mountroot.c
+++ b/sys/kern/vfs_mountroot.c
@@ -1005,6 +1005,7 @@
 		    hz);
 		TSUNWAIT("root mount");
 	}
+	g_waitidle();
 
 	TSEXIT();
 }