svn commit: r220430 - head/sys/amd64/amd64

[b. f.]

> > Author: jhb
> > Date: Thu Apr  7 21:32:25 2011
...
> > URL: http://svn.freebsd.org/changeset/base/220430
...
>
> I think that this commit (plus r220431) has broken something in my environment.
> After updating to the most recent head I started to get semi-random problems in
> various areas:
> - named would consistently fail to start, but with different errors (assertions)
> - ^Z and fg result in a process getting SIGSEGV
> - X sometimes fails to start complaining about failed VT switch
>
> Reverting just these two commits restores sanity.
>
> Just in case, my processor is AMD (arch is obviously amd64).

I experienced similar problems (UP amd64, AMD Mobile Athlon64
processor) and reported it  to kib@ and jhb at .

b.