Comment # 2 on bug 1002025 from Takashi Iwai

It shows the error from copy_to_user() in some radeon ioctl.  It's hard to say
whether it's a kernel problem or a wrong call in user-space.  I guess the
latter.

In anyway, please report this to upstream, bugzilla.freeesktop.org, at best. 
Choose DRI/radeon component, for example.  Feel free to put me (tiwai@suse.de)
in Cc there.  Thanks.