https://bugs.freedesktop.org/show_bug.cgi?id=12877

--- Comment #10 from Chris Rankin rankincj@googlemail.com 2010-07-01 12:53:39 PDT --- I've just noticed this patch being added to 2.6.32.x:

[patch 079/149] drm/radeon: r100/r200 ums: block ability for userspace app to trash 0 page and beyond

http://lkml.indiana.edu/hypermail/linux/kernel/1007.0/00405.html

Is there *any* possibility that I was hitting the bug that this patch is fixing here? (I no longer play WoW with my rv280, so can't actually test this hypothesis.)