[ Adding Chris Wilson (author of the problematic patch) and Rafael Wysocki to the message ]
I submitted https://bugzilla.kernel.org/show_bug.cgi?id=33662 a month ago
against 2.6.38. Now 2.6.39 was just released without the regression being
addressed. This bug makes the system unusable... Some guys on IRC suggested I
email, so here it is.