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From: Greg KH <gregkh@linuxfoundation.org>
To: speck@linutronix.de
Subject: [MODERATED] Re: [PATCH] Raffle 0
Date: Tue, 14 Jul 2020 07:58:27 +0200	[thread overview]
Message-ID: <20200714055827.GA656406@kroah.com> (raw)
In-Reply-To: <5f0cf7c5.1c69fb81.99805.3f5fSMTPIN_ADDED_BROKEN@mx.google.com>

On Mon, Jul 13, 2020 at 05:03:44PM -0700, speck for Pawan Gupta wrote:
> From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
> Subject: [PATCH] powercap: restrict energy meter to root access
> 
> From: Len Brown <len.brown@intel.com>
> 
> Remove non-privileged user access to power data contained in
> /sys/class/powercap/intel_rapl/*/energy_uj
> 
> Non-privileged users currently have read access to power data and can
> use this data to form a security attack.  Some privileged
> drivers/applications need read access to this data but don't expose it
> to non-privileged users.
> 
> For example, thermald uses this data to ensure that power management
> works correctly.  Thus removing non-privileged access is preferred over
> completely disabling this power reporting capability with
> CONFIG_INTEL_RAPL=n.
> 
> Fixes: 95677a9a3847 ("PowerCap: Fix mode for energy counter")
> Signed-off-by: Len Brown <len.brown@intel.com>
> ---
>  drivers/powercap/powercap_sys.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Also, any reason you didn't run this through checkpatch.pl first?

  parent reply	other threads:[~2020-07-14  5:58 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <5f0cf7c5.1c69fb81.99805.3f5fSMTPIN_ADDED_BROKEN@mx.google.com>
2020-07-14  5:57 ` Greg KH
2020-07-14  8:03   ` Andrew Cooper
2020-07-14  8:14     ` Greg KH
2020-07-14  8:20       ` Greg KH
2020-07-14  8:36         ` Andrew Cooper
2020-07-14  8:44           ` Greg KH
2020-07-14 11:00     ` [MODERATED] Do we need this list anymore? (was Re: [PATCH] Raffle 0) Greg KH
2020-07-14 15:34       ` Thomas Gleixner
2020-07-14 22:47         ` [MODERATED] " Gomez Iglesias, Antonio
2020-07-15 13:16           ` Thomas Gleixner
2020-07-14  5:58 ` Greg KH [this message]
2020-07-14  6:01 ` [MODERATED] Re: [PATCH] Raffle 0 Greg KH
2020-07-14 22:39   ` Pawan Gupta

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