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Re: [PATCH] drm/gma500: dont expose bytes from kernel stack

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On Mon, 22 Aug 2016 09:29:17 +0200
Daniel Vetter <daniel@ffwll.ch> wrote:

> On Sun, Aug 21, 2016 at 08:39:38PM +0200, Heinrich Schuchardt wrote:
> > Components m1, m2, p2, dot, vco of variable clock should be
> > initialized to avoid bytes from the kernel stack to be
> > exposed.
> > 
> > Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>  
> 
> Might be a silly question, but where exactly would we expose these bytes?
> This isn't directly called by an ioctl, I have no idea how those bytes
> might get to userspace ...

mrst_print_pll displays clock.p2 - which is indeed never cleared 8)

Alan

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[PATCH] drm/gma500: dont expose bytes from kernel stack Heinrich Schuchardt <xypron.glpk@gmx.de> - 2016-08-21 20:50 +0200
  Re: [PATCH] drm/gma500: dont expose bytes from kernel stack Joe Perches <joe@perches.com> - 2016-08-21 20:50 +0200
    Re: [PATCH] drm/gma500: dont expose bytes from kernel stack Heinrich Schuchardt <xypron.glpk@gmx.de> - 2016-08-21 21:40 +0200
      Re: [PATCH] drm/gma500: dont expose bytes from kernel stack Joe Perches <joe@perches.com> - 2016-08-21 21:40 +0200
  Re: [PATCH] drm/gma500: dont expose bytes from kernel stack Daniel Vetter <daniel@ffwll.ch> - 2016-08-22 09:40 +0200
    Re: [PATCH] drm/gma500: dont expose bytes from kernel stack One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-08-22 11:20 +0200
  Re: [PATCH] drm/gma500: dont expose bytes from kernel stack Jani Nikula <jani.nikula@linux.intel.com> - 2016-08-22 10:40 +0200

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