linux-kernel - Re: tip -ENOBOOT - bisected to locking/refcounts, x86/asm: Implement fast refcount overflow protection

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Message-ID: <1504024459.6024.8.camel@gmx.de>
Date:   Tue, 29 Aug 2017 18:34:19 +0200
From:   Mike Galbraith <efault@....de>
To:     Kees Cook <keescook@...omium.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Elena Reshetova <elena.reshetova@...el.com>,
        Arnd Bergmann <arnd@...db.de>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: tip -ENOBOOT - bisected to locking/refcounts, x86/asm:
 Implement fast refcount overflow protection

On Tue, 2017-08-29 at 08:39 -0700, Kees Cook wrote:
> 
> Was this the x86 refcount implementation, or a atomic -> refcount conversion?

mmm.... <oija board> yes.

# CONFIG_REFCOUNT_FULL is not set

	-Mike