Re: [patch V3 05/13] x86/entry: Consolidate check_user_regs()

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To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Subject: Re: [patch V3 05/13] x86/entry: Consolidate check_user_regs()
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Thu, 16 Jul 2020 13:56:57 -0700
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, Will Deacon <will@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Keno Fischer <keno@xxxxxxxxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx
In-reply-to: <20200716185424.442693273@linutronix.de>
References: <20200716182208.180916541@linutronix.de> <20200716185424.442693273@linutronix.de>

On Thu, Jul 16, 2020 at 08:22:13PM +0200, Thomas Gleixner wrote:
> The user register sanity check is sprinkled all over the place. Move it
> into enter_from_user_mode().
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook

References:
- [patch V3 00/13] entry, x86, kvm: Generic entry/exit functionality for host and guest
  - From: Thomas Gleixner
- [patch V3 05/13] x86/entry: Consolidate check_user_regs()
  - From: Thomas Gleixner

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