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Date: Sat, 8 Feb 2003 18:22:04 +0100
From: Andi Kleen <ak@suse.de>
To: Pavel Machek <pavel@suse.cz>
Cc: Andi Kleen <ak@suse.de>, Kevin Lawton <kevinlawton2001@yahoo.com>,
       linux-kernel@vger.kernel.org
Subject: Re: Possible bug in arch/i386/kernel/process.c for reloading of debug registers (DRx)?
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> What if DRx contains sensitive data? ...Its probably pretty
> unlikely. Still it allows for example easy communication between tasks
> that should not be able to communicate.

The user never sees the stale value, it is eaten by the kernel's do_debug
handler.

-Andi