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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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>