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Date: Mon, 9 Mar 2009 20:38:55 +0100
Message-ID: <671bb5fc0903091238q2c4e4bd7m661333a509395b61@mail.gmail.com>
From: Alexej Sokolov <bsd.quest@googlemail.com>
To: John Baldwin <jhb@freebsd.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: wrong data in remapped buffer
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2009/3/9 John Baldwin <jhb@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