linux-kernel - Re: Adding plain accesses and detecting data races in the LKMM

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]

Message-ID: <Pine.LNX.4.44L0.1904150949170.1575-100000@iolanthe.rowland.org>
Date:   Mon, 15 Apr 2019 09:50:03 -0400 (EDT)
From:   Alan Stern <stern@...land.harvard.edu>
To:     "Paul E. McKenney" <paulmck@...ux.ibm.com>
cc:     Andrea Parri <andrea.parri@...rulasolutions.com>,
        LKMM Maintainers -- Akira Yokosawa <akiyks@...il.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Daniel Lustig <dlustig@...dia.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        Nicholas Piggin <npiggin@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will.deacon@....com>,
        Daniel Kroening <kroening@...ox.ac.uk>,
        Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Adding plain accesses and detecting data races in the LKMM

On Mon, 15 Apr 2019, Paul E. McKenney wrote:

> Another question is "should the kernel permit smp_mb__{before,after}*()
> anywhere other than immediately before or after the primitive being
> strengthened?"
> 
> Thoughts?

How would the kernel forbid other constructions?

Alan