linux-kernel - Re: [patch V2 02/29] x86/dumpstack: Fix off-by-one errors in stack identification

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Message-ID: <20190405154408.GA19359@linux.intel.com>
Date:   Fri, 5 Apr 2019 08:44:09 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Andy Lutomirski <luto@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [patch V2 02/29] x86/dumpstack: Fix off-by-one errors in stack
 identification

On Fri, Apr 05, 2019 at 05:07:00PM +0200, Thomas Gleixner wrote:
> From: Andy Lutomirski <luto@...nel.org>
> 
> The get_stack_info() function is off-by-one when checking whether an
> address is on a IRQ stack or a IST stack.  This prevents a overflowed IRQ
> or IST stack from being dumped properly.
> 
> [ tglx: Do the same for 32-bit ]
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Cc: Josh Poimboeuf <jpoimboe@...hat.com>
> 
> ---

Reviewed-by: Sean Christopherson <sean.j.christopherson@...el.com>