Re: [PATCH] Add user taint flag

From: Valdis . Kletnieks
Date: Mon May 22 2006 - 10:29:48 EST

On Mon, 22 May 2006 15:35:48 BST, Alan Cox said:
> On Llu, 2006-05-22 at 16:14 +0200, Arjan van de Ven wrote:
> > we should then patch the /dev/mem driver or something to set this :)
> > (well and possibly give it an exception for now for PCI space until the
> > X people fix their stuff to use the proper sysfs stuff)
> /dev/mem is used for all sorts of sane things including DMIdecode.
> Tainting on it isn't terribly useful. Mind you this whole user taint
> patch seems bogus as it can only be set by root owned processes so
> doesn't appear to do the job it is intended for - perhaps Ted can
> explain ?

Taint on write to /dev/mem, perhaps? I don't think DMIdecode needs to
scribble on /dev/mem, does it? (Figure if a userspace program runs OK
on a recent Fedora or RedHat kernel, it doesn't need to scribble on /dev/mem
too much, because the vast majority of it is lopped out via a patch....)

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