Index: uspace/srv/fs/tmpfs/tmpfs_ops.c
===================================================================
--- uspace/srv/fs/tmpfs/tmpfs_ops.c	(revision 41a0d27303c8ba364f016cb27a8fb82af5194dac)
+++ uspace/srv/fs/tmpfs/tmpfs_ops.c	(revision 752ccee70526f37f204304e646f75b26bdfe2b07)
@@ -369,5 +369,5 @@
 	}
 	/* Clear any newly allocated memory in order to emulate gaps.  */
-	memset(dentry->data + dentry->size, 0, delta);
+	memset(newdata + dentry->size, 0, delta);
 	dentry->size += delta;
 	dentry->data = newdata;