wrong data in remapped buffer

[Alexej Sokolov]

2009/3/9 John Baldwin <jhb at freebsd.org>

> On Monday 09 March 2009 3:38:55 pm Alexej Sokolov wrote:
> > 2009/3/9 John Baldwin <jhb at freebsd.org>
> >
> > > On Friday 06 March 2009 11:13:38 am Alexej Sokolov wrote:
> > > > Hello,
> > > > I try to MALLOC a buffer in kern, then remap it with vm_map_find(),
> to
> > > space
> > > > of user process.
> > > > Some times the remapped buffer in user space contain incorrect data.
> > >
> > > What architecture are you using?  On some archs like amd64, small
> mallocs
> > > (<=
> > > PAGE_SIZE) don't use the kmem_map or kmem_object.
> > >
> > > --
> > > John Baldwin
> > >
> > anyway , the error happens only some times... I think there is other
> reason.
> > My hardware is amd64
> > % uname -ms
> > FreeBSD i386
>
> i386 always uses kmem for malloc(9).
>
> --
> John Baldwin

ok,
and what should be a reason of  inconsistent data after remapping ?