http://bugs.winehq.org/show_bug.cgi?id=23184
--- Comment #3 from Dan Kegel dank@kegel.com 2012-02-29 19:26:53 CST --- Probably a dup of, or depends on, bug 29669 (which has more detail).
That message is kind of expected. Linux kernel is a bit confused about those extra two bytes, but the truncation doesn't seem to hurt the disc check in Dragon Age Origins, which works once bug 29669 is fixed.